High frequency power supply device

Details High frequency power supply device High frequency power supply device

1983-10-13

1985-11-12

Wong, Peter S.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 24, 363 82, 363 90, H02P 1324

Patent

active

045531994

ABSTRACT:
A high frequency power supply device has an inverter circuit and an output circuit connected thereto. The inverter circuit includes a diode and a capacitor being connected in parallel to an output side of a switching transistor. A drive input voltage of the switching transistor has a dead time during which a collector voltage thereof is inverted by resonance between the capacitor and a circuit inductance of the device. The switching transistor is turned on when the diode is turned on, thereby reducing the switching loss of the switching transistor. The output circuit includes a ferroresonant circuit or a magnetic amplifier circuit which has a saturable inductor.

REFERENCES:
patent: 3739255 (1973-06-01), Leppert
patent: 3750003 (1973-07-01), Peterson et al.
patent: 4356438 (1982-10-01), Iwasaki
patent: 4451876 (1984-05-01), Ogata
patent: 4468723 (1984-08-01), Hughes
"Ferroresonant Converters with High-Frequency Drive" by Koosuke Harada and Katsuaki Murata, 14th Annual IEEE Power Electronics Specialists Conference Jun. 6-9, 1983, pp. 355-359.

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