A review and a proposal for optimal harmonic mitigation in single-phase pulse width modulation

This paper describes a novel space vector modulation method for single-phase inverters suitable for an uninterruptible power supply (UPS) and other applications. This modulation method combines the flexibility of the wellknown unipolar PWM for single-phase inverters with the maximum harmonic mitigation. Six switching methods are presented, evaluated and classified for different single-phase applications, including deadband effects. Simulations using Matlab/Simulink confirm the validity of the proposed PWM. Mathematical analysis and comparison of SPWM with the proposed space vector modulation for single-phase inverter are presented.

[1]  Dan Y. Chen,et al.  Reduction of power supply EMI emission by switching frequency modulation , 1993 .

[2]  L. Ben-Brahim,et al.  The analysis and compensation of dead-time effects in three phase PWM inverters , 1998, IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200).

[3]  M. Egan,et al.  Theoretical spectra of space-vector-modulated waveforms , 1998 .

[4]  Dushan Boroyevich,et al.  A comprehensive study of neutral-point voltage balancing problem in three-level neutral-point-clamped voltage source PWM inverters , 2000 .

[5]  Tore Undeland,et al.  Power Electronics: Converters, Applications and Design , 1989 .

[6]  H. van der Broeck,et al.  Analysis and Realization of a Pulse Width Modulator Based on Voltage Space Vectors , 1986, 1986 Annual Meeting Industry Applications Society.

[7]  Michel Malengret,et al.  A solar photovoltaic in-line UPS system using space vector modulation technique , 2001, 2001 Power Engineering Society Summer Meeting. Conference Proceedings (Cat. No.01CH37262).

[8]  H. Van der Broeck,et al.  Harmonics in DC to AC converters of single phase uninterruptible power supplies , 1995, Proceedings of INTELEC 95. 17th International Telecommunications Energy Conference.

[9]  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.

[10]  Chern-Lin Chen,et al.  A new on-line dead time assignment technique for single-phase PWM inverters , 1996, Proceedings of the 1996 IEEE IECON. 22nd International Conference on Industrial Electronics, Control, and Instrumentation.