Power modulator

Details Power modulator Power modulator

1997-02-24

1999-05-18

Wong, Peter S.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363 16, 363 71, H02M7/5387

Patent

active

059056460

ABSTRACT:
The invention relates to a power modulator of pulse transformer type. The pulse transformer includes at least one secondary winding and a number of primary windings. The primary windings share a common ground terminal, but each "hot" terminal is independently connected to a respective dedicated pulse generating module, which includes a pulse switch, such as an IGBT-switch, connected to an energy storage capacitor. The pulse switch is electronically controllable at turn on and turn off, and eliminates the need for Pulse Forming Networks. The electronic pulse switch control is preferably used in combination with pulse voltage droop-compensating circuits that connect the switches to the primary windings. Furthermore, the transformer design is such that each primary winding only surrounds a portion of the total magnetic core cross section, giving an effect of a fractional turn primary.

REFERENCES:
patent: 3163782 (1964-12-01), Ross
patent: 4682114 (1987-07-01), Aucouturier et al.
patent: 5365421 (1994-11-01), Eastham
patent: 5444610 (1995-08-01), Gaudreau et al.

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