Nonlinear resonant switch and converter

Details Nonlinear resonant switch and converter Nonlinear resonant switch and converter

1988-09-02

1989-05-09

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323222, 323282, G05F 146

Patent

active

048292320

ABSTRACT:
A nonlinear resonant switch for power conversion devices and a converter using the switch are described. The switch optimizes converter efficiency by switching only when current is zero and by limiting the peak current to a value near that provided by conventional PWM converters. A nonlinear reactor having a winding in series with the switch and a tank circuit is biased to saturation at low currents but is driven into an unsaturated condition by high currents so that a resultant high series inductance mitigates further current increase. Several converter topologies incorporating this improvement are shown.

REFERENCES:
patent: 3663949 (1972-05-01), Froeschle
patent: 4187458 (1980-02-01), Milberger et al.
patent: 4415959 (1983-11-01), Vinciarelli
patent: 4415962 (1983-11-01), Kassakian
patent: 4575672 (1986-03-01), Deprez et al.
patent: 4591966 (1986-05-01), Smith
Liu et al., "Resonant Switches-Topologies and Characteristics", IEEE Power Electronics Specialist's Conference, Jun. '85, pp. 106-116.
Ngo, "Generalization of Resonant Switches and Quasi-Resonant DC-DC Converters", IEEE Power Electronics Specialist's Conf., Jun. '87, pp. 395-403.

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