Electric power conversion systems – Current conversion – With condition responsive means to control the output...
Patent
1981-08-14
1983-05-24
Beha, Jr., William H.
Electric power conversion systems
Current conversion
With condition responsive means to control the output...
219 1077, 363 37, 363 49, 363 96, H02P 1320
Patent
active
043853480
ABSTRACT:
There is provided an improvement in a power inverter for converting D.C. voltage into an alternating voltage by alternating gating D.C. current across a load. This type of inverter employs a gating circuit for providing gating signals in two sets of switches at a frequency which controls the power factor of the voltage and current applied to the load, means for detecting the power factor, means for comparing the detected power factor with a reference signal indicative of a desired operating power factor and means for adjusting the frequency in accordance with the comparison whereby the power factor tends to be at the desired power factor level. The improvement in this type of inverter is the provision of means for changing the reference signal during the operation of the inverter in accordance with a control signal so that the desired power factor can be changed during start up of the inverter.
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Beha Jr. William H.
Park-Ohio Industries, Inc.
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