A two-phase SVPWM strategy for dead-time compensation

Author

Cheng Xiaomeng ; Wenlong, Qu ; Haifeng, Lu ; Yang, Fan ; Lixun, Wu ; Shijun, Jiang

Author_Institution

Dept. of Electr. Eng., Tsinghua Univ., Beijing

fYear

2008

fDate

17-20 Oct. 2008

Firstpage

1005

Lastpage

1010

Abstract

A two-phase space vector PWM (SVPWM) strategy is proposed. By properly selecting the no-switching phase in each PWM cycle, the zero current clamping phenomenon can be eliminated, and the dead-time effect can be well compensated even at zero-current periods. Two modes of the strategy are presented. RTHD mode has better harmonic distortion characteristics. In RCMV mode, the common-mode voltage (CMV), which leads to the premature deterioration of motor bearings, is reduced to 1/3 of the traditional three-phase PWM method, and the switching loss is also lower. Just a little software is needed for implementing the proposed strategy and the strategy can be widely applied. Experimental results are presented to fully support the above-mentioned claims.

Keywords

PWM invertors; compensation; harmonic distortion; machine bearings; motor drives; switching convertors; Voltage source inverters; common-mode voltage; dead-time compensation; harmonic distortion characteristics; motor bearing premature deterioration; motor drive systems; switching loss; two-phase SVPWM strategy; two-phase space vector PWM; zero current clamping phenomenon; Clamps; Control systems; Delay; Error correction; Harmonic distortion; Pulse width modulation inverters; Space vector pulse width modulation; Switching loss; Torque control; Zero voltage switching; common-mode voltage; dead-time effect; harmonic distortion; switching loss; two-phase modulation; zero-current clamping;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems, 2008. ICEMS 2008. International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-3826-6

Electronic_ISBN

978-7-5062-9221-4

Type

conf

Filename

4770864