Electric power conversion systems – Current conversion – With condition responsive means to control the output...
Patent
1984-03-12
1985-03-26
Bena, Jr., William H.
Electric power conversion systems
Current conversion
With condition responsive means to control the output...
219 1077, 328160, H02P 1320
Patent
active
045077223
ABSTRACT:
A method and apparatus for controlling the frequency of a power inverter for converting D.C. current into A.C. current having a frequency controlled by gating signals, which apparatus and method includes a load voltage detector for deriving a voltage wave; a load current detector for deriving a current wave; a phase shifter to shift the phase of one of the waves by 90.degree.; a multiplier to multiply the voltage and current waves; one with the other to produce a product; a reference signal for comparison with the product to create a control signal; and, a gating signal controller responding to the control signal.
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Adams Graham R.
Dewan Shashi B.
Bena, Jr. William H.
Park-Ohio Industries, Inc.
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