Sharp AY-ZP35PR Service Manual page 22

6. 180° Energizing control
This is the control system to moderate the speed by the current phase difference for higher efficiency and lower noise of the
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This control is the V/F drive system independent of the location of rotor, detecting the phase difference between driving voltage phase
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Motor voltage
Motor current
Optinum power
factor
Concept chart of the current phase difference control
Phase difference between
the voltage and the current
Phase difference between
the voltage and the current
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AY-ZP35PR