Power conversion system

Details Power conversion system Power conversion system

1997-10-03

1998-11-24

Nguyen, Matthew V.

Electric power conversion systems

Current conversion

Including automatic or integral protection means

363132, H02M 7122, H02M 75387

Patent

active

058416471

ABSTRACT:
A power conversion system including, a series circuit of an upper arm and a lower arm connected between a positive terminal and a negative terminal of a DC power source. Each of the upper and lower arms is composed of a power device having a large dv/dt withstand value and a first snubber circuit connected in parallel with the power device. Each of the first snubber circuits is composed of at least a first capacitor having a fixed capacitance. The power conversion system further includes two second snubber circuits, each composed of a series circuit of a second diode and a second capacitor, connected in parallel with one of the upper and lower arms, and a second resistor connected between a connecting point of the second diode and the second capacitor and one of the negative and positive terminals of the DC power source, respectively.

REFERENCES:
patent: 4697230 (1987-09-01), Neft
patent: 4926306 (1990-05-01), Ueda et al.
patent: 4937725 (1990-06-01), Dhyanchand et al.
patent: 5077651 (1991-12-01), Kobayashi et al.
patent: 5424937 (1995-06-01), Iyotani et al.
patent: 5579215 (1996-11-01), Turuta

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