Harmonics optimization of the voltage balancing control for multilevel converter/inverter systems

This work presents a novel control method to lower the harmonic components of the voltage balancing control for the multilevel converters. The harmonic components in the voltage balancing control theory are analyzed in detail. A revised control method based on the line-line voltage redundancy of the three-phase inverter is proposed to lower the harmonic components of both the converter and inverter side. It can significantly reduce the harmonic components while keeping the switching frequency nearly the same. Simulation and experimental results are provided to show the validity of the theory.

[1]  T. Ishida,et al.  A control strategy for a five-level double converter with adjustable DC link voltage , 2002, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).

[2]  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.

[3]  Leon M. Tolbert,et al.  Multilevel converters for large electric drives , 1999 .

[4]  Keith A. Corzine,et al.  Reduced parts-count multi-level rectifiers , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[5]  V. Stefanovic,et al.  Voltage balancing control of diode-clamped multilevel rectifier/inverter systems , 2003, 38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003..

[6]  Tokuo Ohnishi,et al.  PWM control method for a four-level inverter , 1995 .

[7]  Thomas A. Lipo,et al.  A four level rectifier-inverter system for drive applications , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.

[8]  Fang Zheng Peng,et al.  A multilevel voltage-source converter system with balanced DC voltages , 1995, Proceedings of PESC '95 - Power Electronics Specialist Conference.

[9]  J. M. Leuthen,et al.  Voltage balancing control of diode-clamped multilevel rectifier/inverter systems , 2005, IEEE Transactions on Industry Applications.

[10]  M. Fracchia,et al.  Optimized modulation techniques for the generalized N-level converter , 1992, PESC '92 Record. 23rd Annual IEEE Power Electronics Specialists Conference.

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

[12]  Leon M. Tolbert,et al.  Multilevel converters for large electric drives , 1998, APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition.

[13]  Mark Sumner,et al.  The investigation and development of a multi-level voltage source inverter , 1996 .

[14]  Leon M. Tolbert,et al.  Multilevel PWM methods at low modulation indices , 1999, APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285).

[15]  Mario Marchesoni,et al.  Diode-clamped multilevel converters: a practicable way to balance DC-link voltages , 2002, IEEE Trans. Ind. Electron..

[16]  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.