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Patent
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H02M 3/155 (2006.01) H02M 3/10 (2006.01) H02M 3/335 (2006.01)
Patent
CA 1290809
NONLINEAR RESONANT SWITCH AND CONVERTER Abstract of the Disclosure 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.
600493
Erickson Robert W.
General Motors Corporation
Gowling Lafleur Henderson Llp
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