Phase current protection circuit for inverter

Phase current protection circuit for inverter

  • CN 105,429,107 A
  • Filed: 12/01/2015
  • Published: 03/23/2016
  • Est. Priority Date: 12/01/2015
  • Status: Active Application
First Claim
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1. an inverter phase current protective circuit;

  • it is characterized in that;

    described inverter phase current protective circuit is used for being connected to inverter;

    described inverter is for exporting three-phase current;

    described three-phase current comprises first-phase electric current, second-phase electric current and third phase electric current, and described inverter phase current protective circuit comprises;

    Two-way comparator, for receiving the input of described first-phase electric current, the first voltage and the second voltage is obtained according to described first-phase electric current, judge whether described first voltage exceeds the first reference value and judge whether described second voltage exceeds the second reference value, judging that the first voltage is greater than the latch signal exported when the first reference value or the second voltage are greater than the second reference value for pinning inverter, wherein, described first voltage is the magnitude of voltage of forward amplitude in described inverter phase current protective circuit of described first-phase electric current, described second voltage is the magnitude of voltage of reverse amplitude in described inverter phase current protective circuit of described first-phase electric current.

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