Title :
A line-voltage-sensorless synchronous rectifier
Author :
Kwon, Bong-Hwan ; Youm, Jang-Hyoun ; Lim, Jee-Woo
Author_Institution :
Dept. of Electron. & Electr. Eng., Pohang Inst. of Sci. & Technol., South Korea
fDate :
9/1/1999 12:00:00 AM
Abstract :
A line-voltage-sensorless control for three-phase pulsewidth-modulated (PWM) synchronous rectifiers is presented. A line synchronization and unity power factor control are described. Indirect synchronization 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 synchronization can be properly operated under line voltage distortion or notching and line frequency variation. All control functions are implemented with a single-chip microcontroller. It is shown via experimental results that the proposed controller gives good performance for the synchronous rectifier
Keywords :
AC-DC power convertors; PWM power convertors; control system analysis; control system synthesis; electric current control; microcontrollers; rectifying circuits; synchronisation; voltage control; control design; control performance; control simulation; indirect synchronization; line frequency variation; line synchronization control; line voltage distortion; line voltage notching; line-voltage-sensorless synchronous rectifier; single-chip microcontroller; three-phase PWM synchronous rectifiers; unity power factor control; vector-controlled inverter; Frequency synchronization; Hardware; Power harmonic filters; Pulse width modulation; Pulse width modulation inverters; Reactive power; Rectifiers; Sensorless control; Thyristors; Voltage control;
Journal_Title :
Power Electronics, IEEE Transactions on
