Inverter output voltage synthesis using novel dead time compensation

In this paper, a novel dead time compensation method is presented which produces inverter output voltages equal to reference voltages. The experimental result is also presented to demonstrate the validity of the proposed method. It shows that the compensation of the distorted voltage is possible up to sub-microsecond range. The reference voltage can be used as a feedback value, which is essential for sensorless vector control and flux estimation. The method is based on space vector PWM strategy and it can be carried out automatically by an inverter controller for initial set-up without any extra hardware.<<ETX>>

[1]  Yoshihiro Murai,et al.  Waveform Distortion and Correction Circuit for PWM Inverters with Switching Lag-Times , 1987, IEEE Transactions on Industry Applications.

[2]  F. Blaabjerg,et al.  Improved modulation techniques for PWM-VSI drives , 1993, Proceedings of IECON '93 - 19th Annual Conference of IEEE Industrial Electronics.

[3]  Seung K.Sul,et al.  Current Waveform Improvement of PWM Inverter , 1989 .

[4]  Jeffrey H. Lang,et al.  Inverter nonlinearities and discrete-time vector current control , 1994 .

[5]  Bimal K. Bose,et al.  Base/gate drive suppression of inactive power devices of a voltage-fed inverter and precision synthesis of AC voltage and DC link current waves , 1990, [Proceedings] IECON '90: 16th Annual Conference of IEEE Industrial Electronics Society.

[6]  K. Kamiyama,et al.  Fully digital, vector-controlled PWM VSI-fed AC drives with an inverter dead-time compensation strategy , 1988, Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting.

[7]  Seung-Gi Jeong,et al.  The analysis and compensation of dead-time effects in PWM inverters , 1991 .

[8]  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.