Power control apparatus for high frequency dielectric heating and control method employed by the power control apparatus

Power control apparatus for high frequency dielectric heating and control method employed by the power control apparatus

  • CN 101,461,283 A
  • Filed: 05/31/2007
  • Published: 06/17/2009
  • Est. Priority Date: 06/02/2006
  • Status: Active Grant
First Claim
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1. the power control unit that is used for the high-frequency dielectric heating, it is used to control the inverter that is used to drive magnetron, will be by at least one group at least two thyristors or the series circuit that constitutes more, resonant circuit, and leakage transformer is connected to by the voltage to AC power and carries out the DC power supply that rectification provides, modulate the switching frequency of described thyristor, so that it is transformed into high frequency power, and the output that will occur on the primary side of this leakage transformer is applied to this magnetron, so that encourage this magnetron, this power control unit that is used for the high-frequency dielectric heating comprises:

  • The input current test section, it detects the input current that is input to this inverter from AC power, and output input current waveform information;

    AndConversion portion, its drive signal that is the thyristor of inverter with this input current waveform information translation is so that suppress the momentary fluctuation of input current waveform information.

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