Power conversion apparatus and its controlling method

Details Power conversion apparatus and its controlling method Power conversion apparatus and its controlling method

1995-08-15

1998-07-07

Wong, Peter S.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363 17, 363 98, 327434, H02M 3335, H02M 324, H02M 700, H03K 17687

Patent

active

057778655

ABSTRACT:
A power conversion apparatus has a four terminal semiconductor device including a drain terminal and a source terminal for supplying main current, a gate terminal for controlling the main current, and a base terminal for controlling the on-state voltage, and energy storage means which is connected in the main current circuit consisting of a load and a main power source, wherein electric power is supplied to the base terminal of the semiconductor device by energy stored in the storage means.
Because electric power supplied to the base terminal is provided by energy from the main current circuit, the occurrence of power loss in the control circuit to achieve high frequency operation is avoided.

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patent: 4926302 (1990-05-01), Harada et al.
patent: 4934822 (1990-06-01), Higaki
patent: 5012400 (1991-04-01), Yasuda
patent: 5313143 (1994-05-01), Vila-Masot et al.
patent: 5519306 (1996-05-01), Itoh et al.

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