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Power transfer devices, methods, and systems with crowbar switch shunting energy-transfer reactance

  • US 8,441,819 B2
  • Filed: 07/05/2012
  • Issued: 05/14/2013
  • Est. Priority Date: 06/29/2009
  • Status: Active Grant
First Claim
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1. A Buck-Boost Converter, comprising:

  • first and second switch arrays, each comprising at least two bidirectional switching devices;

    a substantially parallel inductor-capacitor combination connected to each said switch array; and

    a link switch, connected across said inductor-capacitor combination in a crowbar configuration which includes a resistance element which is connected to dissipate energy stored in said substantially parallel inductor-capacitor combination when said link switch is on;

    wherein a first one of said switch arrays is operatively connected to a power input, and is operated to drive power into said inductor-capacitor combination with a non-sinusoidal waveform;

    and wherein a second one of said switch arrays is operated to extract power from said inductor-capacitor combination to an output;

    and wherein, when said link switch is on, said switch arrays are connected to totally disconnect said substantially parallel inductor-capacitor combination from said power input and said output.

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