Title:
CONTROLLER FOR INVERTER
Document Type and Number:
Japanese Patent JPS58154393
Kind Code:
A
Abstract:
PURPOSE:To operate an inverter in the maximum motor efficiency by obtaining a correction variation value by a set rotating speed and current addition and applying a signal output applied with temperature correction to a power converter. CONSTITUTION:A microprocessor 13 loads a set rotating speed signal through a converter 12 and a primary smoothing current signal from a current smoothing circuit 16, and applies control signals of respective phases of PWM waveform formats matched to the maximum efficiency operating frequency to a gate circuit 10. The output of a waveform shaping current zero point detector 15 to the microprocessor 13, the difference between the time of the current zero point and the time conversion value held in a memory is read out, thereby regulating the ON or OFF width of the PWM waveform so that the difference becomes zero.
Inventors:
SHIODA TAKESHI
Application Number:
JP3588882A
Publication Date:
September 13, 1983
Filing Date:
March 09, 1982
Export Citation:
Assignee:
TOYO ELECTRIC MFG CO LTD
International Classes:
H02P27/06; H02M7/48; H02P21/22; H02P23/07; H02P27/08; (IPC1-7): H02M7/48; H02P7/62; H02P13/20
Previous Patent: POWER FEEDING CONTROL ASSEMBLY FOR SYNCHRONOUS ROTARY MACHIEN OPERATED AT SPEED SHIFTING
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