i-manager Publications

i-manager's Journal on Electronics Engineering (JELE)

Current Issue Vol. 15 Issue 1

Most Cited

Volume 3 Issue 1 September - November 2012

Research Paper

Experimental verification on reduction of EMI in ZVS push-pull DC to DC converter system

S. Devi Kala* , P. Nirmalkumar**

* Research Scholar, Sathyabama University, Chennai, India.

** Assistant Professor,/ Anna University, Chennai, India.

S. Devi Kala and P. Nirmal Kumar (2012). Experimental verification on reduction of EMI in ZVS Push-Pull DC to DC Converter System. i-manager’s Journal on Electronics Engineering, 3(1), 1-6. https://doi.org/10.26634/jele.3.1.2033

Abstract

This paper presents the experimental verification of ZVS push-pull converter. The emphasis of this topology is to reduce the electromagnetic interference, conduction losses, and complexity of the circuit. EMI caused by power converters can disturb the normal operation of the converter and other adjacent systems. The main aim of the research work is reduction of EMI in switching power converters. Lessening techniques have been explored to reduce EMI noise effectively. The push-pull converter is used as DC-DC converter suitable for low and medium power application. High efficiency, less switching loss and high power density are the incentives of this application. The switching frequency is increased to achieve high power density which will minimize the complexity of the circuit as size of the components reduced. Thus switching loss has to be minimized to achieve high frequency operation; this can be achieved by ZVS resonant techniques. This reduces switching losses as well as EMI.The push pull DC to DC converter with EMI filter is constructed and tested. The experimental results are compared with simulation results.

References

[1]. D. Zhang, D.Y., Chen and D. Sable, (1998). “A new method to characterize EMI filters,” Applied Power Electronics Conference and Exposition, Vol. 2, Feb. pp. 929 – 933.

[2]. H. Chung, S.Y R., Hui, and K.K. Tse, (1998). “Reduction of power converter EMI emission using soft-switching techniques,” IEEE Transactions. Electromagn. Compat., Vol.40, No.3, pp.282-287, Aug.

[3]. A. Santolaria, J. Balcells and S. Gonzalez, (2002). “Theoretical and experimental results of power converter frequency modulation,” IECON'02, Vol. 1, Nov. pp. 193 – 197.

[4]. M. Rahkala, T. Suntio and K. Kalliomaki, (2002). “Effects of switching frequency modulation on EMI performance of a converter using spread spectrum approach,” Applied Power Electronics Conference and Exposition, Vol. 1, March , pp.93 – 99.

[5]. A. Santolaria, J. Balcells, D. Gonzalez, and J. Gago, (2003). “Evaluation of switching frequency modulation in EMI emissions reduction applied to power converters,” IECON '03, Vol. 3, Nov. , pp. 2306 –2311.

[6]. Heny Shu-hung Chung, Adrian Ioinovic's & Wai – Leung Cheng. (2003). ”Generalized structure of Bidirectional switched-Capacitor DC-DC Converters.” Transactions on Power Electronics.

[7]. E.L., Luo & H. Ye. (2003). “Investigation of EMI, EMS & EMC in power DC/DC Converters” in proc PEDS 03, Vol, 1 pp572-577.

[8]. Ashoka. K.S. Bhat & Fei Luo. (2003). ”A New Gating scheme Controlled Soft Switching DC to DC Bridge Converter,” IEEE Transactions on Power Electronics.

[9]. Y.C. Son and S.K. Sul, (2003). “A new active commonmode EMI filter for PWM inverter,” IEEE Transactions. Power Electronics, Vol.18 No.6, pp.1309-131, Nov.

[10]. Qian Liu, Fred Wang and Dushan Boroyevich. (2004). “Model Conducted EMI Emission of Switching Modules for Converter System EMI Characterization and Prediction,”IEEE Transactions on Power Electronics, July.

[11]. K. Burak Dalci, Kayhan Gulez, Galip Cansever. (2004). ”The Design of a push-pull switch mode power supply for AC drives,” IEEE Industrial Electronics society, Nov.

[12]. Xiang Cheng Wang, Feng Tian, Yinxing Li & Issa Batarseh (2006). ”High Efficiency High power Density DC/DC Converter with Wide Input range,” IEEE Transaction on power Electronics.

[13]. Z. Wang, K.T. Chau, and C. Liu, (2007). “Improvement of electromagnetic compatibility of motor drives using chaotic PWM,” IEEE Transactions.Magnetics, Vol.43, No.6, pp 2612-2614, Jun.

[14]. Fred C., Lee, Shuo Wang, Pengju Kong, Chuanyun Wang & Dianbo Fu (2008). ”Power Architecture Design with Improved systems Efficiency, EMI & power Density,” IEEE Transaction on power Electronics.

[15]. H. Li, W.K.S., Tang, Z. Li, and W.A. Halang, (2008). “A chaotic peak current mode boost converter for EMI reduction and ripple suppression,” IEEE Transactions. Circuits and Systems II; Express Briefs, Vol.55, No.8, pp763- 767, Aug.

[16]. Mohammad Rouhollah Yazdani†, Hosein Farzanehfard_and Jawad Faiz. (2011). ”Classification and Comparison of EMI Mitigation Techniques in Switching Power Converters,”– A Review Journal of Power Electronics. Vol .11, No5 September.

[17]. F.W., Erickson & D. Maksimovic, (2001). Fundamentals of power electronics 2nd edition, USA. Khuwar Academic Publishers, pp 93-94.

[18]. Ned Mohan, Underland & Robbins (2001). “Power Electronics Converters, Applications & Design”., John Wiley & Sons Singapore.

[19].http://alpha400.ee.unsw.edu.au/elec4240/Lecture %2017.pdf Push–pull converter.

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Research Paper

Analytical Approach to Analyze Mode Fields in Arbitrary Index Fibre with Non Circular Geometry

S. K. Raghuwanshi* **

* Fiber Optics Laboratory, Department of Electronics Engineering, Indian School of Mines, Dhanbad, India.

** Department of Electronics and Communication Engineering, Indian School of Mines Dhanbad

S. K. Raghuwanshi and Mandeep Singh (2012). Analytical Approach To Analyze Mode Fields In Arbitrary Index Fibre With Non Circular Geometry. i-manager’s Journal on Electronics Engineering, 3(1), 7-16. https://doi.org/10.26634/jele.3.1.2034

Abstract

In this paper elliptic cylinder coordinate system is used for the representation of modes in the core of non circular fibre. The scalar wave equation is converted to the elliptical coordinate system and the WKB method is applied for the calculation of fields. The author’s try to develop analytical approach to analyze non circular geometry having an arbitrary refractive index. The result obtained in this paper have been already discussed by the several researcher’s but these research paper lack with the detailed mathematical derivation to achieve some specific equations. The attempts in this paper is to show all the intermediate steps of existing results, which will useful for the beginner, who wants to gain the working knowledge in this area[1]. The result obtained in this paper can be easily extended to obtain the graphical or simulation results for non trivial cases.

References

[1]. L. Eyges, (1979). “Modes of dielectric waveguides of arbitrary cross sectional shape”, J. Opt. Soc. Am. 69, p- 1226-1235.

[2]. A. Ankiewicz, (1979). Opt. Quant. Elect. 11 p-197- 203.

[3]. J.D., Love and C. Winkler, (1977). J. Opt. Soc. Amer. 67, 1627-33.

[4]. C. Yeh, (1962). J. Appl. Phys. 33, 3235-43.

[5]. Adrian Ankiewicz, (1979). ”Core fields in graded fibres with non circular index contours”, Optical and Quantum Electronics 11p- 525-539.

[6]. J . Wilson, and J.F.B., Hawkes , (2000) . “Optoelectronics- An Introduction” (Prentice Hall of India, New Delhi), p -425.

[7]. Vivek Singh, A.K., Shahi, S.P., Ojha, (2007). ”Propagation characteristics of an Elliptically-cored highly birefringent fiber using an analytical method”, Springer.

[8]. Z. Wang, J. Ju, W. Jin, (2005). ”Properties of ellipticalcore two- mode fiber” Optical express, Vol.13, No.11.

[9]. M. Skinner, (1986). “Simple approximation formulae for elliptical dielectric waveguides” Optical and Quantum Electronics, 18 p- 345-354.

[10]. R.B. Dyott, (1995). “Elliptical fiber waveguides”, Norwood, MA: Artech house.

[11]. N.W. Mclachan, “ Theory and application of Mathieu fucntions” p-170.

[12]. Markj, Ablowitz, Athanassios, S. “Complex Variables: Introduction and Application” p-501.

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Research Paper

QAM and OFDM - An Analysis of their Noise and Multipath Immunity through Simulation

Eiman Mutwali Abdelmageed Hussain*

Faculty of Engineering, Electrical and Electronics Engineering Department, University of Khartoum, Sudan.

Eiman Mutwali Abdelmageed Hussain (2012). QAM and OFDM - An Analysis Of Their Noise And Multipath Immunity Through Simulation. i-manager’s Journal on Electronics Engineering, 3(1), 17-35. https://doi.org/10.26634/jele.3.1.2035

Abstract

In wireless communication systems, the transmitted signal is subject to different channel impairments, such as noise and multipath propagation. The demand for more reliable and higher speed wireless services has led to the development of digital communication techniques. This new development direction resulted in an increasing interest in new modulation formats that overcome the limitations associated with the wireless communication channel which degrades the performance of the communication system. The new sought modulation formats are expected to have high spectral efficiency and better immunity to transmission impairments. Of these modulation formats are the Quadrature Amplitude Modulation (QAM) and the Orthogonal Frequency Division Multiplexing (OFDM). This paper analyses through computer simulation the performance of: QAM, OFDM and QAM combined with OFDM under different channel impairments and compares which technique gives better performance under these conditions. The analysis was carried out using MATLAB and the results showed that QAM is used to effectively increase the channel capacity while OFDM is attractive because of its effective way in reducing the effect of inter-symbol interference (ISI). Furthermore a combination of these techniques has been proven to enhance the performance of a communication system.

References

[1]. T.S. Rappaport, (1996). Wireless communication. Upper Saddle River, N.J: Prentice Hall.

[2]. David Tse and Pramod Viswanath, (2005). Fundamentals of Wireless Communication. New York, USA: Cambridge University Press.

[3]. John Mills, (1917). Radio communication, theory and methods, with an appendix on transmission over wires. New York: McGraw-Hill Book Company.

[ 4 ] . Robert Frieden,B.A ., J.D ( 2 0 0 0 ) . "Telecommunications". Pennsylvania State University, International Relations , Motorola Satellite Communications, Inc.

[5]. Dipanwita Biswas, (2008). "Performance of Different M-ary modulation and Coherent Phase modulation over Wireless Fading channel," University of KIIT, India, M.A. Thesis.

[6]. Xiaodong Wang, (2004). Wireless Communication Systems. Upper Saddle River, N.J: Pearson Education Inc.,

[7]. Ian A., Glover and Peter M. Grant, (2004). Digital Communications, 2nd Edition. Cornwall, England: Pearson Prentice Hall.

[8]. Leon W. Couch, (2001). Digital and Analog Communication Systems, 6th Edition. Upper Saddle River, N.J: Prentice Hall.

[9]. Schulze Henrik and Christian Luders. (2005). Theory and Applications of OFDM and CDMA. John Wiley & Sons, Ltd.

[ 1 0 ] . M .Schwartz . ( 2 0 0 5 ) . Mobile Wireless Communications, 2nd edition. New York: Cambridge university press.

[11]. Ahmed R.S., Bahai and Burton R. Saltzberg (1999). Multi-Carrier Digital Communications: Theory and Applications of OFDM. [On-line] available at: http://ebooks.kluweronline.com [accessed 1 April 2011].

[12]. Ramjee Prasad, (2004). OFDM for Wireless Communications Systems. Norwood MA: USA, Artech House Inc.

[13]. Mohammad Safiqul Islam,Gouri Rani Barai, Atiq Mahmood, (2011). "Performance analysis of different modulation schemes using OFDM techniques in Rayleigh Fading channel". International Journal of Fundamental Physical Sciences, IJFPS, Vol.1, No.1, pp. 22-27, June.

[14]. Steven J. Vaughan-Nichols. (2002, November). Wi-Fi planet. [Online] availableat:http: // www.wi-fiplanet.com/tutorials/article.php/1500641 [accessed 15 August 2011].

[15]. Herve Benoit, (2006). Digital Television, Satellite, Cable, Terrestrial, IPTV, Mobile TV in the DVB Frame work, 3rd Edition, Paris: Focal Press.

[16]. Adnan Zafar and S. Zaineb Farooq, (2008). "Implementation and Analysis of QPSK &16-QAM Modulator & Demodulator,". ICAST 2nd International Conference on Advances in Space Technologies. Islamabad: Pakistan, 29th – 30th November.

[17]. B.P. Lathi, (2005). Linear systems and signals, 2nd ed. New York , USA: Oxford University Press.

[18]. Xiaolong Li, (2008). "Simulink-based Simulation of Quadrature Amplitude Modulation (QAM) System," in Proceedings of the IAJC - IJME International Conference, paper 205, ENG 105.

[19]. Parastoo Sadeghi. (2006). Lecture notes, topic: "Multicarrier Modulation and OFDM". Department of Information Engineering, Research School of Information Sciences and Engineering, the Australian National University, October.

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Research Paper

Comparison of Phase Shifted PWM Techniques for Cascaded Multilevel Inverter

K. K. C. Deekshit* **

* Department of Electrical and Electronics Engineering, K.L University, Guntur.

** PG Student, Department of Electrical & Electronics Engineering, K.L University, Guntur.

K.K.C. Deekshit and M. Vijaya Krishna (2012). Comparison of Phase Shifted Pwm Techniques For Cascaded Multilevel Inverter. i-manager’s Journal on Electronics Engineering, 3(1), 36-41. https://doi.org/10.26634/jele.3.1.2036

Abstract

This paper deals with comparison of various Phase shifted Pulse width modulation techniques like Phase Shifted carrier, Hybrid Phase shifted carrier and newly proposed Hybrid Phase shifted carrier Pulse width modulation techniques. Comparison is done in terms of their design and their operation.

References

[1]. C. Govindaraju, K. Baskaran, (2011). "Efficient sequential switching Hybrid-modulation of cascaded multilevel inverter," IEEE Trans. Power Electron., Vol.26, No.6, pp.1639-1648, June.

[2]. J. Rodriguez, S. Bernet, B. Wu, J.O. Pontt, and S. Kouro, (2007). "Multilevel voltage-source-converter topologies for industrial medium-Voltage drives," IEEE Trans. Ind. Electron., Vol. 54, No.6, pp. 2930-2945, Dec.

[3]. M. Malinowski, k. Gopakumar, J. Rodriguez, and M. A. Perez, (2010). "A survey on cascaded multilevel inverter," IEEE Trans. Ind. Electron., Vol.57, Vo. 7, pp. 2197-2206, Jul.

[4]. R. Gupta, A. Ghosh, and A. Joshi, (2008). "Switching characterization of cascaded multilevel inverter controlled system," IEEE Trans. Ind. Electron., Vol. 55, No. 3, pp. 1047-1058, Mar.

[5]. R. Teodorescu, F. Beaabjerg, J.K. Pedersen, E. Cengelci, S.U. Sulistijo, B.O. Woo, and P. Enjeti, (1999). "Multilevel converters- A survey," in Proc. EPE Conf., pp. 2 11.

[6] J. Rodriguez, J. S. Lai, and F. Z. Peng, (2002). "Multilevel inverters: A survey of topologies, control, and applications," IEEE Trans. Ind. Electron., Vol. 49, No. 4, pp. 724-738, Aug.

[7]. B. P. McGrath and D. G. Holmes, (2002). "Multicarrier PWM strategies for multilevel inverters," IEEE Trans. Ind. Electron., Vol. 49, No. 4, pp. 858-867, Aug.

[8]. C. Govindaraju, K. Baskaran, (2009). "Optimized hybrid phase disposition PWM control method for multilevel inverter," J. Rec. Trends in Engg., Vol.1, No.3, pp.129-134, May.

[9]. R. Naderi and A. Rahmati, (2008). "Phase shifted carrier PWM technique for general cascaded inverters," IEEE Trans. Power Electron., Vol. 23, No. 3, pp. 1257-1269, May.

[10]. M. Ajaybabu, (2011). "Hybrid modulation technique for multilevel inverters", Proc. RAPCE Conf, pp. 43-51, Nov.

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Research Paper

Levinson Durbin Algorithm-An Approach for feature extraction of Red Palm Weevil

Betty Martin* , A. Vimala Juliet**

* Research Scholar, Sathyabama University, Chennai.

** Professor and Head, SRM University, Chennai.

Betty Martin and Vimala Juliet (2012). Levinson Durbin Algorithm-An Approach for Feature Extraction of Red Palm Weevil. i-manager’s Journal on Electronics Engineering, 3(1), 42-46. https://doi.org/10.26634/jele.3.1.2037

Abstract

Digital audio information has become an important application of computer in the field of audio processing and pattern recognition. In pattern recognition, features are extracted from raw audio data. In this paper, an effective algorithm is proposed to extract features of the acoustic activity of red palm weevil recorded in coconut grooves using Linear predictive coding. The linear predictive coefficients characterize the audio content. Red palm weevil is an economic pest, the infestation of which, at an early stage can prevent total damage of the palm. The detection and infestation of this insect is possible only by capturing the sound produced by the insect, using a reliable digital voice recorder. The sound acquired is further processed to confirm whether it belongs to the insect or not. This can be accomplished by a technique called Linear Predictive Coding. The coefficients extracted can further be matched by training data. The classification depends on the ability to accurately categorize each feature vector set corresponding to its own kind. This application is often used for sound identification or sound verification. In this article, a summary of work done to extract feature of the weevil which was later used to determine its presence on palms, has been done.

References

[1]. P. Dhanalakshmi et al, (2008). “ Classification of audio signals using SVM and RBFNN“ International Journal of Expert Systems with Applications, Elsevier.

[2]. Douglas L. Jones et al. “Speech Processing: Theory of LPC Analysis and Synthesis“ Connexions module: m104821.

[3]. Amol R Madane et al, (2009). “Speech compression using linear predictive coding“. Proceedings of the international workshop on machine intelligence research. pp 119-122.

[4]. L. R. Rabiner, R. W. Schafer, (1978). “Digital Processing of Speech Signals“, Prentice Hall Engle wood cliffs, NJ, pp. 427.

[5]. Jeremy Bradbur (2000). “Linear Predictive Coding“ December 5.

[6]. Betty Martin, Vimala Juliet (2012). “Predictive Coding based on Levinson Durbin Algorithm for feature extraction of RPW.” National Journal on Electronic Sciences and System, April, pp:53.

[7]. G. Chenchamma et al, (2009). “Speech Coding with Linear Predictive Coding” Mechanical and Electronics Engineering – Proceedings of the International Conference on ICMEE.

i-manager's Journal on Electronics Engineering (JELE)

Current Issue Vol. 15 Issue 1

Most Read

Most Cited

Volume 3 Issue 1 September - November 2012

Experimental verification on reduction of EMI in ZVS push-pull DC to DC converter system

S. Devi Kala* , P. Nirmalkumar**

* Research Scholar, Sathyabama University, Chennai, India. ** Assistant Professor,/ Anna University, Chennai, India.

S. Devi Kala and P. Nirmal Kumar (2012). Experimental verification on reduction of EMI in ZVS Push-Pull DC to DC Converter System. i-manager’s Journal on Electronics Engineering, 3(1), 1-6. https://doi.org/10.26634/jele.3.1.2033

Abstract

References

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Analytical Approach to Analyze Mode Fields in Arbitrary Index Fibre with Non Circular Geometry

S. K. Raghuwanshi* **

* Fiber Optics Laboratory, Department of Electronics Engineering, Indian School of Mines, Dhanbad, India. ** Department of Electronics and Communication Engineering, Indian School of Mines Dhanbad

S. K. Raghuwanshi and Mandeep Singh (2012). Analytical Approach To Analyze Mode Fields In Arbitrary Index Fibre With Non Circular Geometry. i-manager’s Journal on Electronics Engineering, 3(1), 7-16. https://doi.org/10.26634/jele.3.1.2034

Abstract

References

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QAM and OFDM - An Analysis of their Noise and Multipath Immunity through Simulation

Eiman Mutwali Abdelmageed Hussain*

Faculty of Engineering, Electrical and Electronics Engineering Department, University of Khartoum, Sudan.

Eiman Mutwali Abdelmageed Hussain (2012). QAM and OFDM - An Analysis Of Their Noise And Multipath Immunity Through Simulation. i-manager’s Journal on Electronics Engineering, 3(1), 17-35. https://doi.org/10.26634/jele.3.1.2035

Abstract

References

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Comparison of Phase Shifted PWM Techniques for Cascaded Multilevel Inverter

K. K. C. Deekshit* **

* Department of Electrical and Electronics Engineering, K.L University, Guntur. ** PG Student, Department of Electrical & Electronics Engineering, K.L University, Guntur.

K.K.C. Deekshit and M. Vijaya Krishna (2012). Comparison of Phase Shifted Pwm Techniques For Cascaded Multilevel Inverter. i-manager’s Journal on Electronics Engineering, 3(1), 36-41. https://doi.org/10.26634/jele.3.1.2036

Abstract

References

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Pdf

Levinson Durbin Algorithm-An Approach for feature extraction of Red Palm Weevil

Betty Martin* , A. Vimala Juliet**

* Research Scholar, Sathyabama University, Chennai. ** Professor and Head, SRM University, Chennai.

Betty Martin and Vimala Juliet (2012). Levinson Durbin Algorithm-An Approach for Feature Extraction of Red Palm Weevil. i-manager’s Journal on Electronics Engineering, 3(1), 42-46. https://doi.org/10.26634/jele.3.1.2037

Abstract

References

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* Research Scholar, Sathyabama University, Chennai, India.

** Assistant Professor,/ Anna University, Chennai, India.

* Fiber Optics Laboratory, Department of Electronics Engineering, Indian School of Mines, Dhanbad, India.

** Department of Electronics and Communication Engineering, Indian School of Mines Dhanbad

* Department of Electrical and Electronics Engineering, K.L University, Guntur.

** PG Student, Department of Electrical & Electronics Engineering, K.L University, Guntur.

* Research Scholar, Sathyabama University, Chennai.

** Professor and Head, SRM University, Chennai.