Electric power conversion systems – Current conversion – Including automatic or integral protection means
Patent
1997-07-30
1999-03-02
Wong, Peter S.
Electric power conversion systems
Current conversion
Including automatic or integral protection means
363 56, 363124, 363131, 363132, H02H 7125, H02H 7122, H02M 75387
Patent
active
058779477
ABSTRACT:
For use in a power converter having a rectifier coupled to an output thereof, a snubber circuit including an energy storage device coupled to the rectifier that moderates a voltage across the rectifier and a method of moderating the voltage. In one embodiment, the snubber circuit includes: (1) a first switch that regulates a voltage across the energy storage device, (2) an inductor, coupled to the first switch, that provides a discharge path for energy stored in the energy storage device when the first switch is conducting and (3) a second switch that recovers energy stored in the inductor to the output when the first switch is not conducting. The snubber circuit thereby reduces voltage stress across the rectifier during a current limit mode of operation.
REFERENCES:
patent: 4977493 (1990-12-01), Smith
patent: 5130917 (1992-07-01), Shekhawat
patent: 5258902 (1993-11-01), Lindbery et al.
patent: 5351179 (1994-09-01), Tsai et al.
patent: 5471376 (1995-11-01), Tsai et al.
patent: 5642273 (1997-06-01), Lai et al.
patent: 5684688 (1997-11-01), Rouaud et al.
patent: 5731966 (1998-03-01), Liu
"Design Considerations for High-Power Full-Bridge Zero-Voltage-Switched PWM Converter" by J.A. Sabate, V. Vlatkovic, R.B. Ridley, F.C. Lee, and B.H. Cho; IEEE Applied Power Electronics Conf. 1990; pp. 275-284.
"Optimization and Design Issues of Low Output Voltage, Off-Line, Zero-Voltage-Switched PWM Converters" by Q. Chen, A. Lotfi, F.C. Lee; Proc. IEEE Applied Power Electronics Conf. Mar. 1992, pp. 449-455.
"A 1kW, 500 kHz Front-End Converter for a Distributed Power Supply System" by L.H. Mweene, C.A. Wright and M.F. Schlecht; Proc. IEEE Applied Power Electronics Conf., Mar. 1989; pp. 423-432.
"A Novel Soft-Switching Full-Bridge DC/DC Converter: Analysis, Design Considerations and Experimental Results at 1.5kW, 100kHz" by R. Redl, N.O. Sokal and L. Balogh; IEEE Power Electronics Specialists Conf. Rec., 1990. pp. 162-172.
"An Improved Zero-Voltage-Switched PWM Converter Using a Saturable Inductor" by G. Hua, F.C. Lee and M.M. Jovanovic; IEEE Power Electronics Specialists Conf. Rec., 1991; pp. 189-194.
"Switched Snubber for High Frequency Switching" by K. Harada and H. Sakamoto; IEEE Power Electronics Specialists Conf. Rec., 1990, pp. 181-188.
"High-Voltage, High Power, ZVS, Full-Bridge PWM Converter Employing an Active Snubber" by V. Vlatkovic, J.A. Sabate, R.B. Ridley and F.C. Lee; Proc. IEEE Applied Power Electronics Conf., Mar. 1991, pp. 158-163.
Chen Qing
Lee Victor Ke-Ji
Lucent Technologies - Inc.
Patel Rajnikant B.
Wong Peter S.
LandOfFree
Snubber circuit for a rectifier and method of operation thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Snubber circuit for a rectifier and method of operation thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Snubber circuit for a rectifier and method of operation thereof will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-428464