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CHARGERS WITH VOLTAGE AMPLITUDE MODULATION

  • US 20200052580A1
  • Filed: 08/27/2019
  • Published: 02/13/2020
  • Est. Priority Date: 10/18/2016
  • Status: Active Grant
First Claim
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1. A charger for charging an energy storage device from an AC (alternating current) power source, the charger comprising:

  • a first rectifier configured to rectify AC power from the AC power source into rectified DC (direct current),a PFC (power factor correction) unit configured to receive the rectified DC from the first rectifier and to deliver amplitude-modulated DC,a DC-to-AC converter comprising a LLC circuit, wherein the DC-to-AC converter is configured to operate at a LLC resonance frequency fs of the LLC circuit and convert the amplitude-modulated DC into amplitude modulated AC, anda second rectifier configured to rectify the amplitude-modulated AC into charger output DC which is used to charge the energy storage device,wherein the charger is further configured to receive feedback from the energy storage device that is being charged—

    and to carry out the amplitude modulation at an output of the PFC unit with respect to the delivered feedback.

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