Power inverter having three or more parallel driven PWM-type power inverting units
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United States of America Patent
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Dec 22, 1998
Grant Date -
N/A
app pub date -
Jun 12, 1997
filing date -
Jun 12, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A power inverter having: three or more PWM-type power inverting units which are so arranged and constructed as to be enabled to be driven in parallel; a plurality of integrated interphase reactors, each of which is so arranged and constructed as to synthesize each of the same phase output currents of the respective PWM-type inverting units and supply the synthesized phase output current to a load such as a three-phase induction motor; a plurality of current balance controllers, each of which is so arranged and constructed as to carry out a retardation correction for a PMW waveform outputted from the respective PWM-type power inverting units in the corresponding phase so that each phase current between the respective PWM-type inverting units is balanced.
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