Lossless snubber circuit and operation method thereof

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United States of America Patent

PATENT NO 9762118
SERIAL NO

13957835

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Abstract

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The present invention discloses a lossless snubber circuit and an operation method thereof. The lossless snubber circuit includes a first snubber circuit. The first snubber circuit includes a first diode (D7) and a capacitor (C3). The capacitance of the capacitor (C3) is big enough so that a voltage spike generated at the moment when a switch transistor (Q1) is turned off is depressed by charging the capacitor (C3). When the switch transistor (Q1) is on, the electric charges released by the capacitor (C3) are directed to a first capacitor (C1) in a three-phase Vienna structure, so as to avoid the problem of voltage stress difference caused by the large quantity of electric charges released by the capacitor (C3) flowing back to the switch transistor (Q1).

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Patent Owner(s)

  • VERTIV ENERGY SYSTEMS, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Wang, Meng Xi'an, CN 450 2515

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