Electricity: power supply or regulation systems – In shunt with source or load – Using choke and switch across source
Patent
1992-12-02
1994-08-30
Stephan, Steven L.
Electricity: power supply or regulation systems
In shunt with source or load
Using choke and switch across source
323235, 323351, 363 16, 363 20, G05F 1618, H02M 3335
Patent
active
053431405
ABSTRACT:
A compact, high frequency, zero voltage switching quasi-resonant converter with a multi-resonant, bi-polar switch includes a resonant switch (S), a first diode (D.sub.p) in parallel with the switch (S), a second diode (D.sub.s)in series with the switch (S), first (C.sub.r1) and second (C.sub.r2) resonant capacitors and a resonant inductor (L.sub.r). The first resonant capacitor (C.sub.r1) is operatively connected to the resonant switch (S) such that any voltage change across the first resonant capacitor (C.sub.r1) necessitates a corresponding voltage change across the resonant switch (S). The second resonant capacitor (C.sub.r2)is operatively connected to the second diode (D.sub.s) such that any voltage change across the second resonant capacitor (C.sub.r2) necessitates a corresponding voltage change across the second diode (D.sub.p). The resonant inductor (L.sub.r) is operatively connected in series with the resonant switch (S) such that any current change through the resonant inductor (L.sub.r) necessitates corresponding changes in the sum of currents flowing through the first resonant capacitor (C.sub.r1), first diode (D.sub.p), and the resonant switch (S), and the sum of currents flowing through the second resonant capacitor (C.sub.r2) and the second diode (D.sub.s).
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State-Plane Analysis of Zero-Current-Switching Resonant DC/DC Power Converters, Marian K. Kazimierczuk and William D. Morse, IEEE Transactions On Power Electronics, vol. 4, No. 2, Apr. 1989.
Zero-Voltage Switching Technique on DC/DC Converters, Kwang-Hwa Liu and Fred C. Y. Lee, IEEE Transactions On Power Electronics, vol. 5, No. 3, Jul. 1990.
Berhane Adolf
England, Jr. John M.
Motorola Inc.
Stephan Steven L.
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