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Alternating voltage generation apparatus and power output apparatus

  • US 7,764,051 B2
  • Filed: 11/28/2005
  • Issued: 07/27/2010
  • Est. Priority Date: 11/30/2004
  • Status: Expired due to Fees
First Claim
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1. An alternating voltage generation apparatus comprising:

  • first and second 3-phase coils,first and second inverters connected to said first and second 3-phase coils, respectively, to receive a direct-current voltage from a voltage supply line,a connector configured to allow connection with an external load receiving supply of alternating voltage from the alternating voltage generation apparatus,a relay circuit connected to a first neutral point of said first 3-phase coil and a second neutral point of said second 3-phase coil, and arranged between said first and second neutral points and said connector, anda control device controlling an operation of said first and second inverters and said relay circuit, whereinsaid first inverter responds to a first control signal from said control device to generate a first alternating voltage having a predetermined frequency at said first neutral point,said second inverter responds to a second control signal from said control device to generate at said second neutral point a second alternating voltage having said predetermined frequency, and corresponding to a phase-inverted version of said first alternating voltage, andsaid relay circuit responds to a third control signal from said control device to electrically connect said first and second neutral points with said connector, and provides to said connector a third alternating voltage having said predetermined frequency, and generated across said first and second neutral points.

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