i-manager Publications

Stability Analysis of a Five-Phase Series Connected Two-Motor Drive System

Sk. Moin Ahmed*, Atif Iqbal**

*Doctral Scholar ,Aligarh Muslim University,Aligarh,India.

**Department of Electrical Engineering, Aligarh Muslim University,Aligarh,India.

Periodicity:October - December'2008
DOI : https://doi.org/10.26634/jee.2.2.309

Abstract

Multi-phase machines in adjustable speed drives is nowadays extensively considered for various applications such as electric ship propulsion, ‘more-electric aircraft’ and traction applications, including EVs and EHVs. In addition to well-known advantages, use of multi-phase machines enables independent vector control of a certain number of machines whose stator windings are connected in series in an appropriate manner, with the supply coming from a single voltage source inverter (VSI). The concept was initially proposed for a five-phase series-connected two-motor drive, but is applicable to any system phase number greater than or equal to five. The stability analysis is an important aspect of a drive system since the motor operates in wide range of frequencies with these types of control strategies. This paper is aimed at the evaluation of the stability of a five-phase series-connected two-motor drive system. The model of a five-phase series-connected machine is at first linearised using small signal modelling approach and is then represented in state space form. The state-space model thus obtained is then used to determine the transfer functions using the developed Matlab code. The classical stability tools are used to evaluate the control characteristics. Analytical, simulation and experimental results are provided to support the findings.

Keywords

Multi-motor drives, multi-phase machines, five-phase, stability.

How to Cite this Article?

Sk. Moin Ahmed and Atif Iqbal (2008). Stability Analysis of a Five-Phase Series Connected Two-Motor Drive System. i-manager’s Journal on Electrical Engineering, 2(2), Oct-Dec 2008, Print ISSN 0973-8835, E-ISSN 2230-7176, pp. 38-46. https://doi.org/10.26634/jee.2.2.309

References

[1] . S.Williamson, and S.Smith, "Pulsating torques and losses in multiphase induction machines," IEEE Trans, on Industry Applications, Vol. 39, No. 4,2003, pp. 986-993.

[2] . S.Green, D.J.Atkinson, A.G.Jack, B.C.Mecrow, and A.King, "Sensorless operation of a fault tolerant PM drive," IEE Proc. Electr. Power Appl., Vol. 150, No. 2, 2003, pp. 117-125.

[3] . J.B.Wang, K.Atallah, and D.Howe, "Optimal torque control of fault-tolerant permanent magnet brushless machines," IEEE Trans, on Magnetics, Vol. 39, No. 5,2003, pp. 2962-2964

[4] . S.Gataric, "A polyphase Cartesian vector approach to control of polyphase AC machines," Proc. IEEE Ind. Appl. Soc. Annual Meeting IAS, Rome, Italy, 2000, Paper No. 38-02

[5] . E.Levi, M.Jones, and S.N.Vukosavic, "Even-phase multi-motor vector controlled drive with single inverter supply and series connection of stator windings," IEE Proc. - Electric Power Applications, Vol. 150, No. 5, 2003, pp. 580-590.

[6] . E.Levi, M.Jones, S.N.Vukosavic, and H.A.Toliyat, "A novel concept of a multi-phase, multi-motor vector controlled drive system supplied from a single voltage source inverter," IEEE Trans, on Power Electronics, Vol. 19, 2004, pp. 320-335.

[7] . E.Levi, M.Jones, S.N.Vukosavic, and H.A.Toliyat, "Operating principles of a novel multi-phase multi-motor vector controlled drive," IEEE Trans, on Energy Conversion, Vol. 19, No. 3,2004, pp. 508-517.

[8] . E. Levi, M. Jones, S.N Vukosavic, S.N., A.Iqbal, H.A Toliyat, "Modelling Control and Experimental investigation of a five-phase series-connected two-motor drive with single inverter supply", IEEE Trans, on Industrial Electronics, Vol. 54, No. 3, June 2007, pp. 1504-1516

[9] . E. Levi, M. Jones, A. Iqbal, H.A.Toliyat, "An induction machine/syn-rel two-motor five-phase series-connected drive", IEEE Trans, on Energy Conversion, Vol. 22, No. 2, June 2007,281-289.

[10] . RC. Krause, T.A. Lipo, "Analysis and simplified representations of a rectifier-inverter induction motor drive", IEEE Tarns. Power Apparatus and Systems, Vol PAS- 88, No. 5, pp. 588-596, May 1969.

[11] . R.H. Nelson, T.A. Lipo, R C. Krause, "Stability analysis of a symmetrical induction machine", IEEE Trans. Power Apparatus and Systems, Vol PAS-88, No. 11, pp. 1710- 171 7, Nov. 1969.

[12] . A. R Russell, I.E.D. Pickup, "Parameter oscillatory motion in electromechanical devices", Proc. IEE, Vol. 125, No. 4, pp. 269-277, Apr. 1978.

[13] . G.C. Verghese, J.H. Lang, "Analysis of Instability in Electrical Machines", IEEE Trans, on Industry Applications, vol. IA-22, NO. 5„ pp. 853-863. Sept/Oct 1986.

[14] . G.K. Singh, V. Pant, Y.R Singh, "Stability analysis of a multi-phase (six-phase) induction machine". Journal of Computer and Electrical Engineering, Vol. 29, pp. 727- 756,2003.

[15] . B.K. Bose, " Modern Power Electronics and AC drives", PHI, New Delhi, 2006.

[16] . Werner Leonhard, "Control of Electrical Drives", Springer, New York, 2003.

Stability Analysis of a Five-Phase Series Connected Two-Motor Drive System

Abstract

Keywords

How to Cite this Article?

References

If you have access to this article please login to view the article or kindly login to purchase the article

Purchase Instant Access

Options for accessing this content:

	North Americas,UK, Middle East,Europe		India	Rest of world
	USD	EUR	INR	USD-ROW
Pdf	35	35	200	20
Online	35	35	200	15
Pdf & Online	35	35	400	25