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i-manager's Journal on Electrical Engineering (JEE)

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Volume 5 Issue 2 October - December 2011

Research Paper

Modelling And Impact Of Compact Fluorescent Lamps On Distribution System

A N Malleswara Rao* , K. Ramesh Reddy, Sanker Ram*

* Research Scholar, J N T University Hyderabad, India.

Dean & HOD, Department of EEE, G. Narayanamma Institute of Technology and Science, Hyderabad.

* Professor, Department of EEE, J N T University, Hyderabad, India

A. N. Malleswara Rao, K. Ramesh Reddy and B. V. Sanker Ram (2011). Simulation Comparison of Class D/ Class E Inverter Fed Induction Heating. i-manager’s Journal on Electrical Engineering, 5(2), 1-7. https://doi.org/10.26634/jee.5.2.1573

Abstract

Compact fluorescent lamps (CFLs) are increasingly being used in households and commercial buildings because of the desire to reduce electricity usage. CFLs are nonlinear, which raises concerns over the widespread use of CFLs due to possible adverse effects on harmonic voltage levels in the distribution system. A MAT LAB model of a simple CFL ballast circuit is shown to match actual CFL current waveforms and is used to assess the interactions between multiple CFLs connected to an electrical network. This work shows the error of using fixed harmonic current injection to model CFLs in a distribution system. Finally, the concept of CFL tensor analysis with phase dependency is introduced.

References

[1]. R.R. Verderber, O.C. Morse, & W.R. Alling, (1993). "Harmonics from compact fluorescent lamps,” IEEE Transaction on Industry Application, Vol. 29, No 3, May- June pp. 670-674.

[2]. R. Arseneau, M. Ouellette, (1993). "The effects of supply harmonics on the performance of compact fluorescent lamps,” IEEE Transactions on Power Delivery, Vol. 8,No. 2, April. pp. 670-674.

[3]. F.V. Topalis, (1993). "Efficiency of Energy Saving Lamps and Harmonic Distortion in Distribution System,” IEEE Transactions on Power Delivery, Vol. 8, No. 4, Oct. pp. 2038-2042.

[4]. N. R. Watson, D. Chuah, M. B. Dewe and S. Hirsch, (1995). “Harmonic Performance of Standard And Compact Fluorescent Lamps”, Proc. IPENZ Conference, pp. 119-122, Palmerston North, New Zealand.

[5]. N.R. Watson and S. Hirsch, (1994). “The Impact of Compact Fluorescent Lamps on Power Quality ”, Proceedings of Conference of the Electric Power Supply Industry (CEPSI), Christchurch, Sept., pp. 416-428.

[6]. M. Ponce, A.J. Marinez, J. Correa, M. Cotorogea, J. Arau, (2006). "High–Efficient Integrated Electronic Ballast for Compact Fluorescent Lamps,” IEEE Transactions on Power Delivery, Vol. 21, No. 2, March.

[7]. H.L. Cheng, C.S. Moo, H.C. Yen, T.F. Lin, S.H. Huang, (2001). “Single switch high-power-factor electronic ballast for compact fluorescent lamps,” Power Electronics and Drive Systems, 2001. Proceedings, 2001 4th IEEE International Conference on Vol. 2, 22-25 Oct. pp. 764- 769.

[8] Y Kato, Y. Okamura, T. Kuratani, S. Takahashi, L. Yokozeki, (2004). "Development of the back-boost inverter suitable for compact lamp," Power Electronics System and Applications, Proceedings. 2004 First International Conference.

[9]. E. Embriz-Santander, A. Domijan and C. W. Williams, (1995). "A comprehensive harmonic study of electronic ballasts and their effect on a utility's 12 kV, 10 MVA feeder,” IEEE Transactions on Powe r Delivery, Vol 10, No.3, July pp. 1591-1599.

[10]. D.J. Pileggo, E.M. Gulachenski, C.E. Root, T.J. Gentile and A.E. Emanual, "The effect of Modern Compact Fluorescent Lights on Voltage Distortion,” IEEE Transactions on Power Delivery, Vol. 8, No. 3, July 1993. pp. 1451-1459.

[11]. N. R. Watson, T. Scott, and S. Hirsch, (2006). “Compact Fluorescent Lamps (CFL) - Implications for Distribution Networks,” Proceedings of EEA Conference, Auckland, New Zealand, June,

[12]. N.Z. Govt., (1981). Electricity Regulations 1997 (based on Ministry of Commerce, Limitation Levels Notice.

[13]. AS/NZS 61000.3.2:2003, (2003). Electromagnetic compatibility (EMC) Part 3.2: Limits -Limits for harmonic current emissions (equipment input current less than or equal to 16 A per phase), Australian/New Zealand Standard,

[14]. M. Fauri, (1997). “Harmonic Modeling of non-linear load by means of crossed frequency admittance matrix,” IEEE Transaction on Power Systems, Vol.12, No. 4, November.

[15]. Y. Sun, G. Zhang, W. Xu, and J. Mayordomo, (2007). "A harmonically coupled admittance matrix model for ac/dc converters,” IEEE Transaction on Power Systems, Vol. 22, No. 4, November .

[16]. B. Smith, N. Watson, A. Wood, and J. Arrillaga, (1998). "Harmonic tensor linearization of HVDC converter,” IEEE Transaction on Power Delivery, Vol.13, No. 4, pp. 1244-1250, Oct.

[17]. G. Kron, (1939). Tensor Analysis of Networks. John Wiley and Sons Inc.

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Research Paper

Study Of The Behavior Of A Power Transmission Network Stability Equipped With The UPFC-FACT Systems

Dib Djalel* , A. Rezaiguia, Z. Abada*, A. Haddouche****

- Research Professor, Department of Electrical Engineering, Tebessa University-Algeria.

Teacher, Department of Electrical Engineering, Tebessa University.

**** Electrical Engineer, Electric Power private company, Tebessa, Algeria .

D. Dib, A. Rezaiguia, Z. Abada and A. Haddouche (2011). Study Of The Behavior Of A Power Transmission Network Stability Equipped With The UPFC-FACT Systems. i-manager’s Journal on Electrical Engineering, 5(2), 8-13. https://doi.org/10.26634/jee.5.2.1576

Abstract

This paper describes the theory and simulation by Matlab/Simulink of flexible Alternative Current Transmission Systems (FACTS) devices used in the disturbed power systems. One of these devices, Unified Power Flow Controller (UPFC) will be chosen for a specific application, detailed in this paper. Simulation investigate the effect of UPFC on the voltage of the related bus, it's also considers the effect on the amount active and reactive power flowing through the transmission system. The UPFC is designed to control and improve the power flow stability in the transmission lines. The aim of this paper is modeling, the identification of the references (decoupled Watt-Var, instantaneous power) and control of UPFC and studying its influence on the electrical Network. Finally simulation results have been presented to indicate the improvement in the performance of the UPFC to control voltage in power systems.

References

[1]. M. Noroozian, L. Angquist, M. Ghandhari, and G. Anderson, “Use of UPFC for optimal power flow control,” IEEE Trans. on Power Delivery, For a book citation.

[2]. Zhang. Rehtanz. Pal (2006). ''Flexible AC Transmission Systems: Modelling and Control'' Springer

[3]. Zhang. Rehtanz. Pal (2006). ''Flexible AC Transmission Systems: Modelling and Control', Springer-Verlag Berlin Heidelberg.

[4]. L-Gyugyi, (1992). ''Unified power-flow concept for flexible ac transmission systems'', IEEE Proceedings-C, Vol. 139, No.4, July, pp. 323-33 10.

[5]. Le DU A., (1992). “Pour un réseau électrique plus performant: l e projet FACTS” RGE n°6/92, June, pp.105- 117.

[6]. Sadeghazadeh, S.M., Ehsan, M., Hajsaid, N., “Application of FACTS devices for the maximum laudability improvement in transmission line”, EPE'97, Trondheim, 8-10 sept, Vol.3, pp.950-955.

[7]. Belcheheb K., & Saadate S. (1998) “utilization of the UPFC for optimal exploitation of costly centrals in the electrical systems”, PEMC'98, Prague Czech Republic, September.

[8]. L. Gyugyi, (2003). “Unified power flow control concept for flexible AC transmission systems generation,” In Proc. Transmission distribution conf., Vol 139, July, pp.323-331.

[9]. Douglas J., Heydt G.T., (1998). “ Power flow control and power flow studies for systems with FACTS devices, in IEEE Transactions on power systems, Vol.13, No.1, February, pp. 60-65.

[10]. J.F. Keri, (1990). “Unified Power Flow Controller (UPFC): Modeling and analysis.” IEEE . Trans. Power Delivery, Vol. 14. pp.648-654, Apr.

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Research Paper

The Effect Of Switching Time Of Different Control Strategies For A Load Frequency Problem

B. Venkata Prasanth* , S.V. Jayaram Kumar, B. Subramanyam*

* Narayana Engineering College, Gudur, A.P., Inda.

Professor, J.N.T.U. College of Engineering, Hyderabad, A.P., India.

* K.L. University, Vaddeswaram, Guntur, A.P., India.

Venkata Prasanth B, Jayaram Kumar S.V and Subramanyam B (2011). The Effect Of Switching Time Of Different Control Strategies For A Load Frequency Problem. i-manager’s Journal on Electrical Engineering, 5(2), 14-19. https://doi.org/10.26634/jee.5.2.1579

Abstract

In this paper a new robust load frequency controller for two area interconnected power system is presented to quench the deviations in frequency and tie line power due to different load disturbances. The dynamic model of the interconnected power system is developed with new state variables without the integral and area control error. The frequency deviations and their derivatives are zero under steady state operation before and after the disturbance. The two area inter connected power system is subjected to a wide range of load disturbances and switching times. To validate the effectiveness of the proposed Fuzzy controller over the Proportional pulse Integral pulse Differential (PID) controller, Optimal controller and Genetic algorithm controller is compared. The results prove that the transient performance with the fuzzy controller placed in both the areas is better than those obtained by the other controllers. The problem is also solved by switching the controllers with certain time delay.

References

[1]. Chang, C.S., & Fu W.(1997). Area load frequency control using fuzzy gain scheduling of PI controllers, Electrical power system Res .Vol.2, pp. 145 – 152.

[2]. Elgerd, O.I. (1933). Electrical energy system theory – An introduction, Mc Graw – Hill, New Delhi.

[3]. Erlugrul, C., & Ilhan, K. (2005). Fuzzy logic controller in interconnected electrical power systems for frequency control, Electrical power system (2005), Vol. 37, pp. 542 – 549.

[4]. Fosha, C.E., & Elgerd O.I. (1970). The megawatt – frequency control theory, IEEE Trans. Power Appl. Syst., Vol.89, pp. 563 – 571.

[5]. Ho Jae Lee et.al. (2006). Robust load frequency control for uncertain non linear power systems: A fuzzy logic approach, Information Sciences ,Vol. 176, pp. 3520 - 3537.

[6]. Lee C.C. (1990). Fuzzy logic in controller part – II, IEEE Trans. Syst., Man Cybern, Vol. 20 (2), pp. 419 – 435.

[7]. Mendal J.M., (1995). Fuzzy logic system for engineering, Proceedings of the IEEE Vol.83, No.3, pp. 345 – 377.

[8]. Prasanth, B.V. et.al (2008). Control of Load Frequency Of a single area power system for Different Control Strategies-Comparison with Fuzzy Control, ICFAI, University Journal of EEE, Vol.1, No. 3, pp. 256 – 260.

[9]. Prasanth, B.V. et.al, (2009). Robust Fuzzy Load Frequency Controller For A Two Area Interconnected Power System, Journal of Theoretical and Applied Information Technology, Vol.15, No 2, pp. 242-252.

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Research Paper

Space Vector Modulated Hybrid Active Power Filter For Power Conditioning

Somlal Jarupula* , M.Venu Gopala Rao**

* Assistant Professor, Department of EEE, K.L University, Vijayawada, A.P, India.

**Professor, Department of EEE, K.L University, Vijayawada, A.P, India.

Jarupula Somlal and M. Venu Gopala Rao (2011). Space Vector Modulated Hybrid Active Power Filter For Power Conditioning. i-manager’s Journal on Electrical Engineering, 5(2), 20-26. https://doi.org/10.26634/jee.5.2.1580

Abstract

This paper presents a control method for hybrid active power filter using Space Vector Pulse Width Modulation (SVPWM). In the proposed control method, the Active Power Filter (APF) reference voltage vector is generated instead of the reference current, and the desired APF output voltage is generated by SVPWM. A MATLAB code is developed to generate the SVPWM switching pulses fed to the two-level inverter topology. The entire power system block set model of the proposed scheme has been developed in MATLAB environment. The developed control algorithm is simple. The APF based on the proposed method can eliminate harmonics, compensate reactive power and balance load asymmetry. Simulation results show the feasibility of the APF with the proposed control method.

References

[1]. EI-Habrouk, M., Darwish. M.K., & Mehta, P. (2000). "Active Power Filters-A Review," Proc. IEE-Elec. Power Applicat., Vol. 147, No. 5, Sept., pp. 403-413.

[2]. Akagi, H. (1996). "New Trends in Active Filters for Power Conditioning," IEEE Trans. on Industry applications, Vol. 32, No. 6, Nov-Dec, pp. 1312-1322.

[3]. Singh, B., Al-Haddad, K., & Chandra, A. (1999). "Review of Active Filters for Power Quality Improvement," IEEE Trans. Ind. Electron., Vol. 46, No. 5, Oct, pp. 960-971.

[4]. Ozdemir, E., Murat Kale, Sule Ozdemir, (2003). "Active Power Filters for Power Compensation Under Non-Ideal Mains Voltages," IEEE Trans. on Industry applications, Vol.12, 20-24 Aug, pp.112-118.

[5]. Dan, S.G., Benjamin, D.D., Magureanu, R., Asimionoaei, L., Teodorescu, R., & Blaabjerg, F. (2005). "Control Strategies of Active Filters in the Context of Power Conditioning," IEEE Trans. on Ind. applications, Vol.25,11- 14 Sept-, pp.10-20

[6]. Wang Jianze, Peng Fenghua, Wu Quitao, Ji Yanchao, (2004). "A Novel Control Method for Shunt Active Power Filters Using SVPWM," IEEE Trans. on Industry applications, Vol.1, 3-7 Oct, pp.134-139.

[7]. Atif Iqbal, Lamine.A, Imtiaz.Ashraf, Mohibullah, (2006). "MATLAB Model of Space Vector PWM for Three- Phase Voltage Source Inverter," universities power engineering conference, 2006, UPEC'06, proceedings of the 41st international Vol 3, 6-8 Sept., pp.1096-1100.

[8]. Rathnakumar, D., Lakshmana Perumal, Srinivasan, T. (2005). "A New Software Implementation of Space Vector PWM," IEEE Trans. Power Electron., Vol.14,8-10 April, pp.131-136.

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Research Paper

Performance Of Sepic Converter And Z-Converter For D.C. Motor

S. A. Elankurisil* , S. S. Dash**

* Research Scholar, Sathyabama University, Chennai. India.

** Professor & Head, SRM University, Chennai, India.

S. A. Elankurisil and S. S. Dash (2011). Performance Of Sepic Converter And Z-Converter For D.C. Motor. i-manager’s Journal on Electrical Engineering, 5(2), 27-33. https://doi.org/10.26634/jee.5.2.1582

Abstract

This paper presents the sepic converter and z converter performance are analyzed, sepic converter produces very high voltage for giving small Input voltage, reduce the total harmonic distortion to improve the efficiency form 89% to 95%. The matlab version 7.3 using for simulation results at constant frequency is used in UPS, high density discharge lamp fuel cell system and photovoltaic systems. Hardware is closely agree with the simulation result sepic converter is more advantages than z-converter they are high step up capability, design flexibility and distributed voltage stress can be achieved. To maintain continuous Input current and clamped voltage stress on switch.

References

[1]. Ki-Bum park and Gun- woo moon (2010). Isolated High step-up Boost converter integrated with sepic converter” IEEE transactions on power Electrics Vol 25 No.9 September.

[2]. Huang- Jen chiu and Li-new lon (2006). “A Bidirectional DC- Dc converter for fuel cell Electric vehicle driving system“ IEEE transactions on power Electrics Vol. 21, No.4 July.

[3]. Morten Nymand and Michael A.E Andersan (2010). “ High- efficiency Isolated Boost DC- DC converter for high power low- voltage fuel cell applications. IEEE transactions on Industrial Electronics Vol. 57 No. 2 Feb.

[4]. Simon Angerd Alejandro Olira (2005). “Power switching converters” CRC press taylor and fransis group.

[5]. Lizhi Zhu and Kunrong wang (2003). “New start up schemes for Isolated full- bridge boost converters” IEEE transactions on power Electronics Vol 18 No 4 July.

[6]. Huafeng Xiao and Shiojun Xie (2008). “A zvs Bidirectirnal DC-DC converter with phase shift plus pvm control scheme “ IEEE transactions on power Electronics Vol. 23 No. 2 March.

[7]. Priterm Das and S. Ahmad Mousavi (2010). “Analysis and design of a Non- Isolated Bidirectional zvs- pwm DC – DC converter with coupled Inductors. IEEE transactions on power Electronics Vol. 25, No..10 October.

[8]. Vesa varisanen and Tomi Rilpinen ( )2010)“Asymmetry on an Isolated full bridge Boost Converter“ IEEE transactions on power Electronics, Vol. 25 No. 8 August

[9]. Jun- Ichi Iton and Fumihiro Hayashi (2010). “Ripple current Reduction of a fuel cell for Effects of switching a single phase Isolated converter using a DC Active filter with a center tap” IEEE transactions on power electronics, Vol. 25, No.3, March.

[10]. Xon kong and Ashwin M. KHAMBAD (2005). “Anallysis and Implementation of a high efficiency Interleaved current fed full bridge converter for fuel fell system. IEEE PEPS pp.474- 479.

[11]. Ismail AK soy and Haci Bodur (2010). “A new zvt- zctpwm DC- DC converter“. IEEE transactions on power Electronics, Vol. 25, No. 8, August.

[12]. Joery Dannehl and Fried Rich Wilhelum fuchs “PI State psce current control of grid connected PWM converters with LCL filters

[13]. Honnyong cha and Fang z- peng z (2005). – source resonant Dc- Dc converter for tride Input voltage and load variation” IEEE International conference X, pp. 995- 1000.

[14]. S.K. Han, H.K. Youn, G.W. Moon, M.J. Youn, and Y.H. Kim, (2005). “A new active clamping zero-voltage switching PWM current-fed half-bridge converter,” IEEE Trans. Ind. Electron., Vol. 20, No. 6, pp. 1271–1279, Nov.

[15]. Moon, M.J. Youn, and Y.H. Kim, (2005). “A new active clamping zero-voltage switching PWM current-fed halfbridge converter,” IEEE Trans. Ind. Electron., Vol. 20, No. 6, pp. 1271–1279, Nov.

[16]. M. Nymand and M.A.E. Anderson (2008). “A new approach to high efficiency in Isolated boost converters for high power lon voltage fuel cell application “In proc EPE- PEMC, Poznan Poland, PP 127 -137

[17]. M.M. Jovanovic and Y. Jang, (2005). “State-of-theart, single-phase, active power factor- correction techniques for high-power applications – An overview” IEEE Trans. Ind. Electron., Vol. 52, No. 3, pp. 701–708, Jun.

[18]. S. Jalbrzykowrki and T. Citko (2008). current fed resonant full bridge boost dc/dc converter “IEEE Trans, and Electron, Vol 55, No 3, pp 1198 – 1205 Mar 2008.

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Research Paper

A Comparative Analysis Of Pulse Width Modulation Techniques For Voltage Source Inverter Fed Induction Motor Drive

R. Rajendran* , N. Devarajan**

* Assistant Professor, Department of IT, Karpagam College of Engineering, Coimbatore.

** Professor, Department of EEE, Government College of Technology, Coimbatore.

R. Rajendran and N. Devarajan (2011). A Comparative Analysis Of Pulse Width Modulation Techniques for Voltage Source Inverter Fed Induction Motor Drive. i-manager’s Journal on Electrical Engineering, 5(2), 34-41. https://doi.org/10.26634/jee.5.2.1584

Abstract

Adjustable speed drive system requires variable voltage and frequency supply which is invariably obtained form a threephase voltage source inverter. A number of pulse width modulation schemes are used to obtain variable voltage and frequency supply form an inverter. The most widely used PWM schemes for a three phase VSI are carrier based sinusoidal PWM (SPWM) and space vector PWM (SVPWM). There is an increasing trend of using space vector PWM because of their easier digital realization and better dc bus utilization. The MATLAB/SIMULINK simulation results show the superiority of the SVPWM compared to SPWM for an adjustable induction motor drive.

References

[1]. B.K .Bose, (2002) ”Modern Power Electronics and AC drives”,Prentice-Hall.

[2]. Vedam Subrahmanyam, (2005). ”Electric Drives- Concepts and Applications”, Tata McGraw-Hill.

[3]. Guy Seguir, Francis Labric, (2007). ”Coverters of Power Electronics”, Vol 4.

[4]. W. Leonhard, (1990). ”Control of Electrical Drives” Springer- Verlag, New York, Tokyo.

[5]. K. Ogata, (1990). ”Modern Control Engineering”, Prentice- Hall, New Jersey.

[6]. Mohan, Undeland, Robbins, (1989). ”Power Electronics”, Wiley, second edition.

[7]. N. Mohan, (2011)”Advanced Electric Drives”, Minneapolis,

[8]. B.D. Bedford, R.G. Hoft, R.G. et al., (1984). ”Principles of Inverter Circuits”, New York: John Wiley & Sons, Inc.

[9]. Derek.A. Paice, (1999). ”Power Electronics Converters Harmonics”, Wiley-IEEE Press.

[10]. Tsung-Po Chen, Yen-Shin Lai, Chang-Huan Liu, (1999). ”A new space vector modulation technique for inverter control”, Power Electronics Specialists Conference, th 1999.PESC 99.30 Annual IEEE, Vol.2, No. 27, pp.777-782, June-July.

[11]. Daewoo Chung, Joohn-Sheok Kim,Seung-Ki Sul, (1998). ”Unified voltage modulation technique for realtime three-phase power conversion”, IEEE Transactions on Industry Applications, Vol.34, No. 22, pp.374-380.

[12]. S. Fukuda, K. Suzuki, (1997). ”Using Harmonic distortion determining factor for harmonic evaluation of carrier-based PWM methods”, Industry Applications Conference, Thirty-Second IAS Annual Meeting, IAS'97, Conference Record of the 1997 IEEE, Vol. 2, 5-9,pp.1534- 1541, Oct.

[13]. A.M. Hava, R.J. Kerkman, T.A. Lipo, (1997). ”A high performance generalized discontinuous PWM algorithm”, Applied Power Electronics Conference and Exposition, APEC'97 conference Proceedings, Vol. 2,23- 27, ,pp.886-894.

[14]. A.M. Hava, R.J. Kerkman, T.A. Lipo, (1997). ”Simple analytical and graphical tools for carrier based PWM methods”, Power Electronics Specialists Conference, PESC'97 Record, 28th Annual IEEE, Vol. 222-27, pp.1462- 1471.

[15]. D.G. Holmes, (1996). ”The significance of zero space vector placemen for carrier-based PWM schemes”, IEEE Transactions on Industry Applications, Vol. 32, pp.1122- 1129.

[16]. J. Holtz, (1994). ”Pulse width modulation for electronic power conversion”, Proceedings of the IEEE, Vol.82, No. 8 , pp.1194-1214.

[17]. A.M. Trzynadlowski, S.Legowski, (1994). ”Minimumloss vector PWM strategy for three-phaseinverters”, IEEE Transactions on Power Electronics, Vol. 9, No. 1, pp.26- 34.

[18]. A.C. Oliveira, C.B. Jacobina, et, al. (2007) ”Improved ead-time compensation for Sinusoidal PWM inverters operating at high switching frequencies”, IEEE Transactions on Industrial Electronics, Vol.54, No 4, Aug.

[19]. P. Bowler. (1995). ”Pulse Width Modulation for Induction Motor Drive”, Proceedings of the first IEEE International Caracas Conference on Devices, Circuits and Systems, 12-14 Dec.

[20]. Peter Vas. (1992). ”Electrical machines and drives: A space-vector theory approach”, Oxford University Press.

[21]. Van der Broeck, H. Skudelny, et.al. (1986). ”Analysis and Realization of a pulse width modulator based on voltage space vectors”, Proceedings of the IEEE-IAS conference, pp.244.251.

[22]. Y. Tzou, H. Hsu. (1997). ”FPGA Realization of space vector pwm control IC for 3 phase PWM inverters”, IEEE Transactions on Power Electronics, Vol.12, No.06, November.

[23]. Berrezzek Farid, Omeriri Amar, ( 2009)”A study of new techniques of controlled PWM inverters”, European journal of scientific research, Vol. 32, No.1, pp.78-88.

[24]. S. Ogasawara, H.Akagi, and A.Nabae. (1989). ”A novel PWM scheme of voltage source inverter based on space vector theory”, European Power Electronics Conference Record, Germany, pp.1197-1202.

[25]. Satean Tunyasrirut,Sompong Srilad. (2008). ”Comparison power quality of the voltage source inverter type SVPWM and SPWM technique for induction motor drive”, Proceedings of the SICE Annual Conference, pp.241-246.

[26]. G. Almer, (1991). ”A PWM current-source inverter for high quality drive: European Power Electronics Journal, Vol.1,No.1, ,pp 21-32, July.

[27]. S.R. Bowes, S.Grewal, and D. Holliday. (2001). High frequency PWM technique for two and three level single phase inverter: IEEE Proceedings-ElectricPower Applications, Vol.147, No.2, Mar.

[28].www.mathworks.com

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Research Paper

Time-Frequency Domain Techniques For Identification Of Power System Transients

Ashwani Kumar Chandel* , P. Srikanth**

*-** Department of Electrical Engineering, National Institute of Technology, Hamirpur, Himachal Pradesh, India.

Ashwani Kumar Chandel and P. Srikanth (2011). Time-Frequency Domain Techniques for Identification of Power System Transients. i-manager’s Journal on Electrical Engineering, 5(2), 42-48. https://doi.org/10.26634/jee.5.2.1586

Abstract

In the present work power system transient disturbances using Stockwell and Hartley Stockwell transforms have been identified. Stockwell transform (ST) is utilized previously for the real time prediction of the disturbance as it is able to accurately determine the sudden burst in the signal. However, in some cases the frequency resolution of ST is low. Consequently, Hartley Stockwell transform (HST) has been proposed which has a good frequency resolution. A comparison of proposed HST technique with ST considering various test cases has been carried out, which shows its efficacy.

References

[1]. A. Greenwood. (1923). Electrical Transients in Power nd Systems, 2 ed, USA: John Wiley & Sons, ch.1.

[2]. T. Lobos, J. Rezmer, and H. J. Koglin. (2001). “Analysis of power system transients using wavelets and Prony th method,” Proc. of IEEE Porto Power Tech Conf, 10-13 , Sep.

[3]. F. Janicek, M. Mucha, and M. Ostrozlik. (2007). “A new protection relay based on fault transient analysis using wavelet transform,” Journal of Electrical Engineering, Vol. 58, No. 5, pp. 271–278.

[4]. M. Andrade and A. R. Messina. (2005). “Application of Hilbert techniques to the study of subsynchronous oscillations,” Proc. of IPST International Conference on Power Systems Transient, pp. 172-178, June.

[5]. M.S. Mamis, T. Abbasov, S. Herdem, and M. Koksal. (1999). “Transient analysis of electrical machines by differential Taylor transform,” Proc. of IPST International Conference on Power System Transient, pp. 325-328, June.

[6]. F. Mo and W. Kinsner. (1997). “Wavelet modeling of transients in power systems,” Proc. of IEEE conf. Communications, Power and Computing, pp. 132-137, May.

[7]. C. J. Dafis, C. O. Nwankpa, and A. Petropuh. (2000). “Analysis of Power System Transient Disturbances Using an ESPRIT-based Method,” IEEE conf., pp. 437-442.

[8]. A.A. Girgis and R.B. McManis. (1989). “Frequency domain techniques for modeling distribution or transmission networks using capacitor switching induced transients,” IEEE Power Engineering Review, pp. 74, July.

[9]. C. Robert Pinnegar and Lalu Mansinha. (2004). “Time–frequency localization with the Hartley S-transform,” Journal of Signal Processing, Elsevier, Vol. 84, pp. 2437–2442.

[10]. Z.S.L. Ruirui, W. Q. Jeffers, T. Heptol, and Yang Guimin. (2009). “The research of power quality analysis based on improved S-transform,” Proc. of ICEMI, the Ninth International Conference on Electronic Measurement & Instruments, pp. 477-481.

[11]. R.G. Stockwell. (1999). S-Transform Analysis of Gravity Wave Activity from a Small Scale Network, Ph.D. Dissertation, Dept. of Physics, Western Ontario Univ., London, Ontario, Sep.

[12]. Mathworks.(2011). MATLAB/SIMULINK 7.6 version.

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Research Paper

Real-Time Designing And Modeling Of Online Monitoring Of Energy Consumption Using GPRS System

P. Sujatha* , P. Ram Kishore Kumar Reddy, Vijaya Kumar*

* Associate Professor, Department of EEE , JNTUA CEA.

Associate Professor, Department of EEE, MGIT, Hyderabad.

* Professor, Department of EEE, JNTUA CEA.

P. Sujatha, P. Ram Kishore Kumar Reddy and M. Vijaya Kumar (2011). Real-Time Designing And Modeling Of Online Monitoring Of Energy Consumption Using GPRS System. i-manager’s Journal on Electrical Engineering, 5(2), 49-54. https://doi.org/10.26634/jee.5.2.1587

Abstract

With the development of technology, electrical automation is coming up as an optimal solution for monitoring and auditing of power consumptions. In conventional approach of power monitoring, manual readings and monitoring for the forecasting of load dispatching and consumption were made. In such an approach the error of processing is quite large. In this paper, automation of monitoring and load consumption using wireless GPRS based communication system is proposed. The designing and modeling of measuring and monitoring unit is also proposed. The developed system is tested for its feasibility over a real time distribution system and the results were evaluated.

References

[1]. "Evaluating The Leading-Edge Italian Telegestore Project", presentation by Fabio Borghese, ENEL, Business Development Executive, Infrastructure and Networks Division

[2]. Domestic Metering Innovation, Consultation Document, Ofgem (UK), February 1, 2006.

[3]. Maandelijks uitlezen van elektriciteitsmeters, Eindverslag van regeringsopdracht 27-05-2002, Statens Energimyndighet (Sweden)

[4]. Gerwen, R.J.F., Jaarsma, S. and Koenis, F., Cost Benefit Analysis for Automated Metering, Metering International, issue 4, 2005

[5]. Information on automated metering project on Continuon website: http://www.continuon.nl, visited June 8, 2006.

[6]. Information on website Oxxio: http://www.oxxio.nl visited June 8, 2006 and brochure C 06-05-02.

[7]. Sungmo Jung, Jae-gu Song, Seoksoo (2008) Kim, “Design on SCADA Test-bed and Security Device,” International Journal of Multimedia and Ubiquitous Engineering, Vol. 3, No. 4, October.

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Research Paper

Minimization of Torque Ripple By SVM In Direct Torque Control Of PMSM Drives

Sudhakar Ambarapu* , Vijaya Kumar**

* Lecturer, Department of Electrical and Electronics Engineering, S K University College of Engineering and Technology, Anantapur, India.

**Associate Professor, Department of Electrical and Electronics Engineering, JNT University, Hydrabad, India.

A. Sudhakar and M. Vijaya Kumar (2011). Minimization of Torque Ripple by SVM in Direct Torque Control of PMSM Drives . i-manager’s Journal on Electrical Engineering, 5(2), 55-59. https://doi.org/10.26634/jee.5.2.1588

Abstract

An improved DTC scheme based on space vector modulation (SVM) for Permanent Magnet SynchronousMachine(PMSM) drives. The new scheme provides a alternative option for the improvement of DTC controlled PMSM in reducing the torque ripple. Closed-loop control of both torque and flux is developed with proportional Integral controllers. The stator voltage vector is generated through Space Vector Modulation unit. The torque and flux ripples are greatly reduced with space vector modulation technique comparing with classical switching-table based DTC scheme. The analysis of the control principle provides a guide to design the controller parameters. Modeling results present the features effectiveness of the proposed scheme.

References

[1]. LANG Bao-hua, LIU Wei-guo ZHOU, Xi-wei LI Rong., (2006). “Research on Direct Torque Control of PMSM Based on Optimized State Selector” IEEE ISIE, July 9-12,pp 2105-2109

[2]. D. Fodorean, A. Djerdir,A.Miraouiand I.A. Viorel (2007). “ FOC and DTC Techniques for Controlling a Double Excited Synchronous Machine” IEEE Transactions pp 1258-1263.

[3]. Yanping Xu, Yanru Zhong and Hui Yang (2006). “A Modified DTC for IPMSM Drive without a Speed Sensor” IPEMC IEEE Transactions.

[4]. Dan SUN, Zongyuan HE, Yikang HE and Yufan GUAN (2007). “Four-Switch Inverter Fed PMSM DTC with SVM approach for Fault Tolerant operation” IEEE Transactions pp 295-299.

[5]. I. Takahashi and Noguchi, T (1986). “A New Quick- Response and High-Efficiency Control Strategy of an Induction Motor,” Industry Applications, IEEE Transactions on, Vol IA-22, pp 820-827.

[6]. K.E.B. Quindere, E. Ruppert F Milton E. de Oliveira F. “A Three-Level Inverter Direct Torque Control of a PMSM” 2006 IEEE Transactions pp 2361-2366.

[7]. Carlos Ortega Antoni Arias Cedric Caruana Cyril Staines Josep Balcells Joseph Cilia (2006). “Sensorleless DTC of a Surface Mounted PMSM using High Frequency Injection” IEEE ISIE, July 9-12 pp 2332-2337

[8]. Xiao and M.F. Rahman, (2006). ”DTC of an PMSM fed by a Direct AC-AC Converter” IPEMC, IEEE Transactions.

[9]. Xiao and M.F.Rahman., (2006). “DTC for IPMSM Using Matrix Converters” IPEMC IEEE Transactions.

[10]. Jun Zhang, M. Faz Rahman, and Colin Grantham (2006). ”A New Scheme to DTC of IPMSM Drives for Constant Inverter Switching Frequency and Low Torque Ripple” IPEMC 2006 IEEE Transactions.

[11]. Modern Power Electronics and AC Drives by Bimal K. Bose Prentice Hall PTR. www.phptr.com pp 522-526.

[12]. Ali Ahmed Adam, and Kayhan Gulez, “Torque Control of PMSM and Associated Harmonic Ripples”, pp. 155-198

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Research Paper

Implementation Of Genetic Algorithm For Optimal Multistage Electrical Distribution System Planning

Ravi Babu Pallikonda* , K. Anish Kumar, G. Charan Teja*

* Professor, EEE Department, CVR College of Engineering, Hyderabad, India.

Student, EEE Department, ACE Engineering College, Hyderabad, India.

* Student, EEE Department, ACE Engineering College, Hyderabad, India.

P. Ravi Babu, K. Anish Kumar and G. Charan Teja (2011). Implementation Of Genetic Algorithm For Optimal Multistage Electrical Distribution System Planning. i-manager’s Journal on Electrical Engineering, 5(2), 60-67. https://doi.org/10.26634/jee.5.2.1589

Abstract

This paper describes a genetic algorithm approach to the optimal multistage planning of distribution networks. The authors describe a mathematical model and algorithm that they have developed and experimented with success. This paper also reveals the results of the proposed methodology on 50 bus test system.

References

[1]. Y. Baklund, J.A., Bubenko, (1979). “computer aided distribution planning”, Electrical Power & Energy Systems, Vol.1, No.1, April, pp 35-45.

[2]. M.A el-kady. (1984). “Computer aided planning of distribution substation and primary feeders”, IEEE Transactions on PAS, Vol. 103, June, pp. 1183-1189.

[3]. T. Burkhardt, et al., (1985). “Decision making including forecast uncertaintities and optimal routing in distribution networks”, Proceedings of CIRED'85, s.6, Brighton, U.K., Apr, pp. 1927-1933.

[4]. T. Gonen, I.J. Ramirez-Rosado, (1986). “Review of distribution planning models: a model for optimal multistage planning”, IEEE Proceedings, Vol. 133, Pt. C, No. 7, Nov, pp. 397-408.

[5]. K. Aokietal., ( “New approximate optimization method for distribution system planning”' IEEE Transactions on PWRS, Vol. 5, No.1, Feb, pp. 126-132.

[6]. N. Kagan, R.N. Adams, (1990). “Application of Benders decomposition technique to the distribution th planning problem”, Proceedings of the 10 . PSCC, Graz, Austria, Aug, ed. Butterworths, London, pp. 259-271.

[7]. K. Nara et al. (1991). “Multi-year expansion planning for distribution systems”, IEEE Transactions on PWRS, Vol.6, No.3, Aug.

[8]. D.E. Goldberg, K. Deb, (1991). “A comparative Analysis of Selection Schemes Used in Genetic Algorithms”. Genetic Algorithms in Search Optimization and Machine Learning Summer School, Stanford, pp. 69- 93.

[9]. H. Ding et al, (1992). “Optimal clustering of power rd networks using genetic algorithms”, Proc. 3 Biennial Symp. Indust. Elect. Applications, Ruston, LA, USA, LA Tech. Univ., , pp. 209 – 214.

[10]. V. Ajjarapu et al., (1991). “Application of genetic based algorithms to optimal capacitor placement”, Proc. First International Forum on Applications of Neural Networks to Power Systems, New York, NY, USA, IEEE, pp. 196-202.

[11]. T. Haida et al., (1991). “Genetic algorithms approach to voltage optimization”, Proc. First International Forum on Applications of Neural Networks to Power Systems, New York, NY, USA, IEEE, pp. 1927-1933.

[12]. Muscas, C.; Pilo, F.; Pisano, G.; Sulis, S., (2006). “Optimal Placement of Measurement Devices in Electric Distribution Systems”, Instrumentation and Measurement Technology Conference, 2006. IMTC. Proceedings of the IEEE, 24-27 April, pp. 1873 – 1878.

[13]. Muscas, C.; Pilo, F.; Pisano, G.; Sulis, S. (2007). “Considering the uncertainty on the network parameters in the optimal planning of measurement systems for Distribution State Estimation”. Instrumentation and Measurement Technology Conference Proceedings of IEEE, IMTC, 1-3 May, pp. 01-06.

[14]. Celli, G., Loddo, M.; Pilo, F., Abur, A. ( “On-line network reconfiguration for loss reduction in distribution networks with Distributed Generation” Electricity Distribution,. CIRED, 6-9 June, pp. 01-04.

[15]. Khushalani., S. Solanki, J.M. Schulz., N.N. (2007). “Optimized Restoration of Unbalanced Distribution Systems” Power Systems, IEEE Transactions. May, pp. 624- 630.

[16]. Chowdhury, A.A., Agarwal, S.K., Koval, D.O. (2007). “Reliability modeling of distributed generation in 2005). conventional distribution systems planning and analysis” Industry Applications, IEEE Transactions, Sept.-Oct. 2003, pp. 1493 – 1498.

[17]. V. Miranda; F.M. Barbosa, (1983). “Three phase load flow for radial networks”, Proc. of MELECON'83 rp. D4/07, Athens, Greece.

[18]. Vladimiro Miranda; J.V. Ranito; L.M. Proenca., (1994). Genetic Algorithm in Optimal Multi stage Distribution network planning, IEEE Transactions on Power Systems, Vol. 9, No. 4, Nov, pp. 1927-1933.

i-manager's Journal on Electrical Engineering (JEE)

Current Issue Vol. 17 Issue 2

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Volume 5 Issue 2 October - December 2011

A N Malleswara Rao* , K. Ramesh Reddy**, Sanker Ram***

* Research Scholar, J N T University Hyderabad, India. ** Dean & HOD, Department of EEE, G. Narayanamma Institute of Technology and Science, Hyderabad. *** Professor, Department of EEE, J N T University, Hyderabad, India

A. N. Malleswara Rao, K. Ramesh Reddy and B. V. Sanker Ram (2011). Simulation Comparison of Class D/ Class E Inverter Fed Induction Heating. i-manager’s Journal on Electrical Engineering, 5(2), 1-7. https://doi.org/10.26634/jee.5.2.1573

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Dib Djalel* , A. Rezaiguia**, Z. Abada***, A. Haddouche****

*-** Research Professor, Department of Electrical Engineering, Tebessa University-Algeria. *** Teacher, Department of Electrical Engineering, Tebessa University. **** Electrical Engineer, Electric Power private company, Tebessa, Algeria .

D. Dib, A. Rezaiguia, Z. Abada and A. Haddouche (2011). Study Of The Behavior Of A Power Transmission Network Stability Equipped With The UPFC-FACT Systems. i-manager’s Journal on Electrical Engineering, 5(2), 8-13. https://doi.org/10.26634/jee.5.2.1576

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B. Venkata Prasanth* , S.V. Jayaram Kumar**, B. Subramanyam***

* Narayana Engineering College, Gudur, A.P., Inda. ** Professor, J.N.T.U. College of Engineering, Hyderabad, A.P., India. *** K.L. University, Vaddeswaram, Guntur, A.P., India.

Venkata Prasanth B, Jayaram Kumar S.V and Subramanyam B (2011). The Effect Of Switching Time Of Different Control Strategies For A Load Frequency Problem. i-manager’s Journal on Electrical Engineering, 5(2), 14-19. https://doi.org/10.26634/jee.5.2.1579

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Somlal Jarupula* , M.Venu Gopala Rao**

* Assistant Professor, Department of EEE, K.L University, Vijayawada, A.P, India. **Professor, Department of EEE, K.L University, Vijayawada, A.P, India.

Jarupula Somlal and M. Venu Gopala Rao (2011). Space Vector Modulated Hybrid Active Power Filter For Power Conditioning. i-manager’s Journal on Electrical Engineering, 5(2), 20-26. https://doi.org/10.26634/jee.5.2.1580

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S. A. Elankurisil* , S. S. Dash**

* Research Scholar, Sathyabama University, Chennai. India. ** Professor & Head, SRM University, Chennai, India.

S. A. Elankurisil and S. S. Dash (2011). Performance Of Sepic Converter And Z-Converter For D.C. Motor. i-manager’s Journal on Electrical Engineering, 5(2), 27-33. https://doi.org/10.26634/jee.5.2.1582

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R. Rajendran* , N. Devarajan**

* Assistant Professor, Department of IT, Karpagam College of Engineering, Coimbatore. ** Professor, Department of EEE, Government College of Technology, Coimbatore.

R. Rajendran and N. Devarajan (2011). A Comparative Analysis Of Pulse Width Modulation Techniques for Voltage Source Inverter Fed Induction Motor Drive. i-manager’s Journal on Electrical Engineering, 5(2), 34-41. https://doi.org/10.26634/jee.5.2.1584

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Ashwani Kumar Chandel* , P. Srikanth**

*-** Department of Electrical Engineering, National Institute of Technology, Hamirpur, Himachal Pradesh, India.

Ashwani Kumar Chandel and P. Srikanth (2011). Time-Frequency Domain Techniques for Identification of Power System Transients. i-manager’s Journal on Electrical Engineering, 5(2), 42-48. https://doi.org/10.26634/jee.5.2.1586

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P. Sujatha* , P. Ram Kishore Kumar Reddy**, Vijaya Kumar***

* Associate Professor, Department of EEE , JNTUA CEA. ** Associate Professor, Department of EEE, MGIT, Hyderabad. *** Professor, Department of EEE, JNTUA CEA.

P. Sujatha, P. Ram Kishore Kumar Reddy and M. Vijaya Kumar (2011). Real-Time Designing And Modeling Of Online Monitoring Of Energy Consumption Using GPRS System. i-manager’s Journal on Electrical Engineering, 5(2), 49-54. https://doi.org/10.26634/jee.5.2.1587

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Sudhakar Ambarapu* , Vijaya Kumar**

* Lecturer, Department of Electrical and Electronics Engineering, S K University College of Engineering and Technology, Anantapur, India. **Associate Professor, Department of Electrical and Electronics Engineering, JNT University, Hydrabad, India.

A. Sudhakar and M. Vijaya Kumar (2011). Minimization of Torque Ripple by SVM in Direct Torque Control of PMSM Drives . i-manager’s Journal on Electrical Engineering, 5(2), 55-59. https://doi.org/10.26634/jee.5.2.1588

Abstract

References

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Ravi Babu Pallikonda* , K. Anish Kumar**, G. Charan Teja***

* Professor, EEE Department, CVR College of Engineering, Hyderabad, India. ** Student, EEE Department, ACE Engineering College, Hyderabad, India. *** Student, EEE Department, ACE Engineering College, Hyderabad, India.

P. Ravi Babu, K. Anish Kumar and G. Charan Teja (2011). Implementation Of Genetic Algorithm For Optimal Multistage Electrical Distribution System Planning. i-manager’s Journal on Electrical Engineering, 5(2), 60-67. https://doi.org/10.26634/jee.5.2.1589

Abstract

References

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A N Malleswara Rao* , K. Ramesh Reddy, Sanker Ram*

* Research Scholar, J N T University Hyderabad, India.

Dean & HOD, Department of EEE, G. Narayanamma Institute of Technology and Science, Hyderabad.

* Professor, Department of EEE, J N T University, Hyderabad, India

Dib Djalel* , A. Rezaiguia, Z. Abada*, A. Haddouche****

- Research Professor, Department of Electrical Engineering, Tebessa University-Algeria.

Teacher, Department of Electrical Engineering, Tebessa University.

**** Electrical Engineer, Electric Power private company, Tebessa, Algeria .

B. Venkata Prasanth* , S.V. Jayaram Kumar, B. Subramanyam*

* Narayana Engineering College, Gudur, A.P., Inda.

Professor, J.N.T.U. College of Engineering, Hyderabad, A.P., India.

* K.L. University, Vaddeswaram, Guntur, A.P., India.

* Assistant Professor, Department of EEE, K.L University, Vijayawada, A.P, India.

**Professor, Department of EEE, K.L University, Vijayawada, A.P, India.

* Research Scholar, Sathyabama University, Chennai. India.

** Professor & Head, SRM University, Chennai, India.

* Assistant Professor, Department of IT, Karpagam College of Engineering, Coimbatore.

** Professor, Department of EEE, Government College of Technology, Coimbatore.

P. Sujatha* , P. Ram Kishore Kumar Reddy, Vijaya Kumar*

* Associate Professor, Department of EEE , JNTUA CEA.

Associate Professor, Department of EEE, MGIT, Hyderabad.

* Professor, Department of EEE, JNTUA CEA.

* Lecturer, Department of Electrical and Electronics Engineering, S K University College of Engineering and Technology, Anantapur, India.

**Associate Professor, Department of Electrical and Electronics Engineering, JNT University, Hydrabad, India.

Ravi Babu Pallikonda* , K. Anish Kumar, G. Charan Teja*

* Professor, EEE Department, CVR College of Engineering, Hyderabad, India.

Student, EEE Department, ACE Engineering College, Hyderabad, India.

* Student, EEE Department, ACE Engineering College, Hyderabad, India.