Title :
Three-phase PWM synchronous rectifiers without line-voltage sensors
Author :
Kwon, B.-H. ; Youm, J.-H. ; Lim, J.-W. ; Seok, K.-W. ; Jeong, G.-Y.
Author_Institution :
Dept. of Electron. & Electr. Eng., Pohang Inst. of Sci. & Technol., South Korea
fDate :
11/1/1999 12:00:00 AM
Abstract :
A line-voltage-sensorless control for three-phase pulse-width-modulated (PWM) synchronous rectifiers is presented. A line synchronisation and unity power factor control are described. Indirect synchronisation without sensing the line voltage allows a standard vector-controlled inverter to be used as a synchronous rectifier without requiring any additional hardware. Furthermore, the line synchronisation can be operated properly under line-voltage distortion or notching and line-frequency variation. It is shown via experimental results that the proposed controller gives good performance for the synchronous rectifier
Keywords :
PWM invertors; power control; power factor correction; rectifying circuits; synchronisation; voltage control; indirect synchronisation; line synchronisation; line-frequency variation; line-voltage distortion; line-voltage-sensorless control; notching; three-phase PWM synchronous rectifiers; unity power factor control; vector-controlled inverter;
Journal_Title :
Electric Power Applications, IEE Proceedings -
DOI :
10.1049/ip-epa:19990465
