Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Isolated Power Supply for Multiple Gate Drivers using Wireless Power Transfer System with Single-Antenna Receiver

  • Lim, Chang-Jong (Dept. of Electrical and Electronic Eng., Dankook University) ;
  • Park, Shihong (Dept. of Electrical and Electronic Eng., Dankook University)
  • Received : 2017.01.31
  • Accepted : 2017.05.21
  • Published : 2017.09.20
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Abstract

This paper presents a power supply for gate drivers, which uses a magnetic resonance wireless power transfer system. Unlike other methods where multiple antennas are used to supply power for the gate drivers, the proposed method uses a single antenna in an insulated receiver to make multiple mutually isolated power supplies. The power transmitted via single antenna is distributed to multiple power supplies for gate drivers through resonant capacitors connected in parallel that also block DC bias. This approach has many advantages over other methods, where each gate driver needs to be supplied with power using multiple receiver antennas. The proposed method will therefore lead to a reduction in production costs and circuit area. Because the proposed circuit uses a high resonance frequency of 6.78 MHz, it is possible to implement a transmitter and a receiver using a small-sized spiral printed-circuit-board-type antenna. This paper used a single phase-leg circuit configuration to experimentally verify the performance characteristics of the proposed method.

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