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Bidirectional power converter

  • US 10,128,691 B2
  • Filed: 01/23/2018
  • Issued: 11/13/2018
  • Est. Priority Date: 04/10/2015
  • Status: Active Grant
First Claim
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1. A bidirectional power converter operable to provide alternating current (AC) power at an AC terminal of the bidirectional power converter in a transmit mode of the bidirectional power converter and provide direct current (DC) power at a DC output terminal of the bidirectional power converter in a receive mode, the bidirectional power converter comprising:

  • an oscillator configured to provide a drive signal at a base frequency;

    an amplifier configured to receive power from a power source via a DC input terminal of the bidirectional power converter and provide an AC output signal in response to receiving the drive signal when the bidirectional power converter is operating in the transmit mode;

    a modulator configured to selectively provide the drive signal from the oscillator to the amplifier as a function of a hysteretic control signal when the bidirectional power converter is operating in the transmit mode;

    a hysteretic receiver circuit configured to receive a transmitted control signal and provide the hysteretic control signal to the modulator;

    a transmit relay configured to electrically connect the amplifier to the AC terminal of the bidirectional power converter when the bidirectional power converter is operating in the transmit mode and electrically disconnect the amplifier from the AC terminal of the bidirectional power converter when the bidirectional power converter is operating in the receive mode;

    a rectifier configured to receive an alternating current power signal from the AC terminal of the bidirectional power converter and provide a DC output to the DC output terminal of the bidirectional power converter when the bidirectional power converter is operating in the receive mode; and

    a hysteretic control circuit configured to monitor the DC output and transmit a control signal as a function of the DC output when the bidirectional power converter is operating in the receive mode.

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