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Active power conditioner for reactive and harmonic compensation having PWM and stepped-wave inverters

  • US 5,751,138 A
  • Filed: 06/20/1996
  • Issued: 05/12/1998
  • Est. Priority Date: 06/22/1995
  • Status: Expired due to Fees
First Claim
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1. Apparatus for actively compensating a reactive power load and a harmonic distortion on an alternating current power line, comprising:

  • (a) a stepped-wave inverter that produces a reactive compensation signal for use in dynamically compensating the reactive power load;

    (b) a pulse width modulation inverter that produces a harmonic compensation signal on its output terminals for use in compensating the harmonic distortion on the power line; and

    (c) means for coupling the reactive compensation signal and the harmonic compensation signal to the power line, so that the reactive power load and the harmonic distortion on the power line are compensated by said signals, and so that a voltage level across the output terminals of said pulse width modulation inverter is substantially less than a voltage on the alternating current power line.

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