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Three-phase PWM synchronous rectifiers without line-voltage sensors

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5 Author(s)
Kwon, B.-H. ; Dept. of Electron. & Electr. Eng., Pohang Inst. of Sci. & Technol., South Korea ; Youm, J.-H. ; Lim, J.-W. ; Seok, K.-W.
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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

Published in:

Electric Power Applications, IEE Proceedings -  (Volume:146 ,  Issue: 6 )