Output Current Ripple Analysis of Five-Phase PWM Inverters

An output current ripple analysis of five phase PWM inverters under sinusoidal and nonsinusoidal operations is presented in this paper. A general expression of output current ripple of five-phase PWM inverters under nonsinusoidal operation is first derived. Under sinusoidal operation it is found that the optimum reference signal that results in minimum output current ripple is a sinusoidal reference signal. Under nonsinusoidal operation, however, it is found that fifth harmonic injection can be used to reduce the output current ripple. Moreover, fifth harmonic injection is useful to increase the maximum modulation index of five-phase PWM inverter. Simulation and experimental results are included to show the validity of the derived expressions.

[1]  H.A. Toliyat,et al.  Field oriented control of five-phase synchronous reluctance motor drive with flexible 3/sup rd/ harmonic current injection for high specific torque , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[2]  Seung-Ki Sul,et al.  Analysis of multiphase space vector pulse width modulation based on multiple d-q spaces concept , 2005, The 4th International Power Electronics and Motion Control Conference, 2004. IPEMC 2004..

[3]  R. Parimelalagan,et al.  Studies on inverter-fed five-phase induction motor drive , 1988 .

[4]  J. Kolar,et al.  Influence of the modulation method on the conduction and switching losses of a PWM converter system , 1990, Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting.

[5]  E. G. Strangas,et al.  Multiphase Space Vector Pulse Width Modulation , 2002, IEEE Power Engineering Review.

[6]  E. Klingshirn,et al.  High Phase Order Induction Motors - Part I-Description and Theoretical Considerations , 1983, IEEE Transactions on Power Apparatus and Systems.

[7]  Hamid A. Toliyat,et al.  Five-phase induction motor drives with DSP-based control system , 2002 .

[8]  Thomas A. Lipo,et al.  Analysis and simulation of five-phase synchronous reluctance machines including third harmonic of airgap MMF , 1998 .

[9]  Yukihiko Sato,et al.  Analysis and Minimization of Harmonics in the AC and DC Sides of PWM Inverters , 1995 .

[10]  V. Blasko,et al.  Analysis of a hybrid PWM based on modified space vector and triangle comparison methods , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.

[11]  Longya Xu,et al.  Evaluation of 3/sup rd/ harmonic component effects in 5-phase synchronous reluctance motor drive using time stepping finite element method , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).

[12]  Pekik Argo Dahono.  Analysis and Minimization of Output Current Ripple of Multiphase PWM Inverters , 2006 .

[13]  Hamid A. Toliyat,et al.  Vector control of five-phase synchronous reluctance motor with space vector pulse width modulation (SVPWM) for minimum switching losses , 2002, APEC. Seventeenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.02CH37335).

[14]  E. Klingshirn,et al.  High Phase Order Induction Motors - Part II-Experimental Results , 1983, IEEE Transactions on Power Apparatus and Systems.

[15]  O. Ojo,et al.  Generalized discontinuous carrier-based PWM modulation scheme for multi-phase converter-machine systems , 2005, Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, 2005..

[16]  Slobodan N. Vukosavic,et al.  Generalised Sinusoidal PWM with Harmonic Injection for Multi-Phase VSIs , 2006 .

[17]  Hamid A. Toliyat,et al.  Rotor field oriented control of five-phase induction motor with the combined fundamental and third harmonic currents , 2001, APEC 2001. Sixteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.01CH37181).

[18]  S. R. Bowes,et al.  Suboptimal switching strategies for microprocessor-controlled PWM inverter drives , 1985 .