Title :
On the compensation of dead time and zero-current crossing for a PWM-inverter-controlled AC servo drive
Author_Institution :
Univ. of Qatar, Doha, Qatar
Abstract :
Conventional dead-time compensation methods, for pulsewidth-modulated (PWM) inverters, improve the current output waveforms; however, the zero-current crossing effect is still apparent. This letter proposes a new method, based on angle domain repetitive control, to reduce the distortions in the PWM inverters output waveforms caused by the dead time and the zero-crossing problem.
Keywords :
AC motor drives; PWM invertors; machine control; servomotors; AC servo drive control; PWM-inverter; angle domain repetitive control; current output waveforms; dead time compensation; distortion reduction; zero-current crossing; Circuits; Delay effects; Insulated gate bipolar transistors; MOSFETs; Pulse inverters; Pulse width modulation; Pulse width modulation inverters; Servomechanisms; Switching frequency; Voltage; AC servo drive; PWM; angle domain; dead-time compensation; inverter; pulsewidth-modulated; repetitive control; zero-current crossing;
Journal_Title :
Industrial Electronics, IEEE Transactions on
DOI :
10.1109/TIE.2004.834940
