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Power transmission system

  • US 10,065,510 B2
  • Filed: 12/01/2015
  • Issued: 09/04/2018
  • Est. Priority Date: 07/11/2013
  • Status: Active Grant
First Claim
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1. A power transmission system comprising:

  • a power transmitting device configured to convert supplied alternating current (AC) or direct current (DC) power into AC power and transmit the converted AC power via a transmission path; and

    a power receiving device configured to receive the AC power via the transmission path,wherein the power receiving device comprises;

    a rectifier configured to rectify the AC power received via the transmission path to DC power;

    a DC converter configured to perform DC conversion on the DC power output from the rectifier; and

    a power-receiving side controller configured to calculate, based on an input voltage of the DC converter, a current command value making input impedance of the DC converter equal to a preset value and to control the DC converter so that an input current of the DC converter equals the current command value, andwherein the power transmitting device comprises;

    an AC converter configured to convert the supplied AC or DC power into the AC power; and

    a power-transmitting side controller configured to control a gain of the AC power in the AC converter;

    the power-receiving side controller is configured to transmit the current command value to the power-transmitting side controller; and

    the power-transmitting side controller is configured to control the gain of the AC power in the AC converter based on the current command value received from the power-receiving side controller so that input power of the DC converter is constant.

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