Title :
New multilevel rectifier based on series connection of H-bridge cell
Author :
Lin, B.-R. ; Lu, H.-H.
Author_Institution :
Dept. of Electr. Eng., Nat. Yunlin Univ. of Sci. & Technol., Taiwan
fDate :
7/1/2000 12:00:00 AM
Abstract :
A three-level pulse-width modulation (PWM) rectifier is proposed. The control scheme is based on general logic gates to generate a three-level voltage waveform. In comparison with the two-level PWM scheme, the three-level PWM scheme can reduce the electromagnetic interference, decrease voltage stress of power semiconductors, and increase the switching frequency. A capacitor voltage compensator is used to balance two DC bus voltages. Based on the proposed control algorithm, the current harmonics of the line meet the International Electrotechnical Commission 1000-3-2 limits. The power factor of the proposed rectifier is nearly unity. The control strategy of the proposed three-level rectifier illustrates its validity and effectiveness experimentally
Keywords :
AC-DC power convertors; PWM power convertors; bridge circuits; harmonic distortion; power conversion harmonics; power semiconductor switches; rectifying circuits; switching circuits; H-bridge cell series connection; IEC 1000-3-2 limits; capacitor voltage compensator; control algorithm; control scheme; control strategy; current harmonics; electromagnetic interference; general logic gates; multilevel rectifier; power semiconductors; switching frequency; three-level PWM rectifier; three-level voltage waveform; voltage stress;
Journal_Title :
Electric Power Applications, IEE Proceedings -
DOI :
10.1049/ip-epa:20000421
