Power conversion device

Details Power conversion device Power conversion device

1998-05-20

2000-05-02

Wong, Peter S.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363135, 307116, H02M 7538, H01H 4700

Patent

active

060580372

ABSTRACT:
Reflux diode 5u.about.5w and 5x.about.5z are in anti-parallel connected to MOSFET 4u.about.4w and 4x.about.4z. When MOSFET 4u.about.4w and 4x.about.4z are turned OFF, an electric current flows in a forward direction to reflux diode 5u.about.5w and 5x.about.5z. In the case of this construction, when for example reflux diode 5u disconnects, a small inverse voltage is applied from inverse voltage applied circuit 7 to reflux diode 5u. For this reason, as the inverse recovery of reflux diode 5u is produced by low voltage direct current power source 8 of inverse voltage applied circuit 7, loss occurring at reflux diode 5u is reduced.

REFERENCES:
patent: 4107551 (1978-08-01), Akamatsu
patent: 4231083 (1980-10-01), Matsuda et al.
patent: 4922365 (1990-05-01), Mori
patent: 5450306 (1995-09-01), Garces et al.
patent: 5517402 (1996-05-01), Ikeda et al.
patent: 5952738 (1999-09-01), Miller

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