×

RESONANT FREQUENCY CONTROL METHOD, ELECTRIC POWER TRANSMITTING DEVICE, ELECTRIC POWER RECEIVING DEVICE IN MAGNETIC RESONANT TYPE POWER TRANSMISSION SYSTEM

  • US 20130015720A1
  • Filed: 07/31/2012
  • Published: 01/17/2013
  • Est. Priority Date: 02/10/2010
  • Status: Active Grant
First Claim
Patent Images

1. A resonant frequency control method in a magnetic field resonant coupling type power transmission system transmitting an electric power from a power transmitting coil to a power receiving coil using magnetic field resonance, comprising:

  • detecting a phase of a voltage supplied to the power transmitting coil and a phase of a current that flows in the power transmitting coil or the power receiving coil, and varying a resonant frequency of the power transmitting coil or the power receiving coil such that phase difference between them becomes a target value.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×