Multilevel selective harmonic elimination PWM technique in series-connected voltage inverters

The selective harmonic elimination PWM (SHEPWM) method is systematically applied for the first time to multilevel series-connected voltage source PWM inverters. The method is implemented based on optimization techniques. The optimization starting point is obtained using a phase-shift harmonic suppression approach. Another less computationally demanding harmonic suppression technique, called a mirror surplus harmonic method, is proposed for five-level (double-cell) inverters. Theoretical results of both methods are verified by experiments and simulations for a double-cell inverter. Simulation results for a five-cell (11-level) inverter are also presented for the multilevel SHEPWM method.

[1]  S. Tenconi,et al.  Multilevel voltage source converters for medium voltage adjustable speed drives , 1995, 1995 Proceedings of the IEEE International Symposium on Industrial Electronics.

[2]  P.N. Enjeti,et al.  Programmed PWM techniques to eliminate harmonics - A critical evaluation , 1988, Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting.

[3]  S.B. Dewan,et al.  A two stage inverter large scale static var compensator with minimum filetring requirements , 1990, International Conference on Magnetics.

[4]  P. Enjeti,et al.  Solving nonlinear equations of harmonic elimination PWM in power control , 1987 .

[5]  G. Sciutto,et al.  A new multilevel PWM method: a theoretical analysis , 1990, 21st Annual IEEE Conference on Power Electronics Specialists.

[6]  Haoran Zhang,et al.  A dual-bridge inverter approach to eliminating common mode voltages and bearing and leakage currents , 1997 .

[7]  S. R. Bowes,et al.  Novel PWM controlled series-connected current-source inverter drive , 1989 .

[8]  Longya Xu,et al.  Analysis of a Novel Stator Winding Structure Minimizing Harmonic Current and Torque Ripple for Dual Six-Step Converter-Fed High Power AC Machines , 1995, IEEE Transactions on Industry Applications.

[9]  Hirofumi Akagi,et al.  A New Neutral-Point-Clamped PWM Inverter , 1981, IEEE Transactions on Industry Applications.

[10]  Hirofumi Akagi,et al.  A novel control scheme of a parallel current-controlled PWM inverter , 1992 .

[11]  Xiaogang Huang,et al.  Direct-coupled multilevel cascaded series VAr compensators , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.

[12]  Ss Grewal,et al.  Simplified harmonic elimination PWM control strategy , 1998 .

[13]  J. Sun,et al.  Optimal PWM based on real-time solution of harmonic elimination equations , 1996 .

[14]  Yanchao Ji,et al.  Novel four-bridge PWM static VAr compensator , 1997 .

[15]  S. R. Bowes,et al.  Regular-sampled harmonic-elimination PWM control of inverter drives , 1995 .

[16]  Dariusz Czarkowski,et al.  Optimal surplus harmonic energy distribution , 1998 .

[17]  Boon-Teck Ooi,et al.  Microprocessor implemented SPWM for multiconverters with phase-shifted triangle carriers , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.

[18]  Li Li,et al.  Optimal surplus harmonic energy distribution [in PWM invertors] , 1998, IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200).

[19]  Tokuo Ohnishi,et al.  An improved voltage vector control method for Neutral-Point-Clamped inverters , 1994 .

[20]  Frede Blaabjerg,et al.  New medium voltage PWM inverter topologies for adjustable speed AC motor drive systems , 1998, APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition.

[21]  Ss Grewal,et al.  A novel harmonic elimination PWM strategy , 1998 .

[22]  Richard G. Hoft,et al.  Generalized Techniques of Harmonic Elimination and Voltage Control in Thyristor Inverters: Part I--Harmonic Elimination , 1973 .

[23]  Dong-Seok Hyun,et al.  A new n-level high voltage inversion system , 1997, IEEE Trans. Ind. Electron..

[24]  M. Marchesoni,et al.  Multilevel converters for high power AC drives: a review , 1993, ISIE '93 - Budapest: IEEE International Symposium on Industrial Electronics Conference Proceedings.

[25]  Thomas A. Lipo,et al.  Comparison of multilevel inverters for static VAr compensation , 1994, Proceedings of 1994 IEEE Industry Applications Society Annual Meeting.

[26]  Keiju Matsui,et al.  Parallel-connections of pulsewidth modulated inverters using current sharing reactors , 1995 .

[27]  P. Enjeti,et al.  Optimal power control strategies for neutral point clamped (NPC) inverter topology , 1989, Conference Record of the IEEE Industry Applications Society Annual Meeting,.

[28]  P. Bhagwat,et al.  Generalized Structure of a Multilevel PWM Inverter , 1983, IEEE Transactions on Industry Applications.

[29]  Hirofumi Akagi.  The state-of-the-art of power electronics in Japan , 1998 .

[30]  R. Sotudeh,et al.  A dual GTO current source converter topology with sinusoidal inputs for high power applications , 1997, Proceedings of APEC 97 - Applied Power Electronics Conference.

[31]  Peter K. Steimer,et al.  Five level GTO inverters for large induction motor drives , 1993, Conference Record of the 1993 IEEE Industry Applications Conference Twenty-Eighth IAS Annual Meeting.

[32]  Fang Zheng Peng,et al.  Multilevel converters-a new breed of power converters , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[33]  Thomas A. Lipo,et al.  Fault protection in a multilevel inverter implementation of a static condenser , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[34]  Boon-Teck Ooi,et al.  UPFC using multiconverter operated by phase-shifted triangle carrier SPWM strategy , 1998 .