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POWER SAVING DRIVING CIRCUIT INCLUDING POWER FACTOR CORRECTION FOR AN INDUCTION MOTOR
POWER SAVING DRIVING CIRCUIT INCLUDING POWER FACTOR CORRECTION FOR AN INDUCTION MOTOR
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机译:包括感应电动机功率因数校正的节能驱动电路
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摘要
A power saving driving circuit for a motor including power factor correction comprises an induction motor; a power factor correction capacitor; a first switching element allowing the motor to operate in a positive sine wave period of an power supply voltage; a diode allowing the power factor correction capacitor to be charged during the first switching element being OFF; a second switching element allowing the motor to operate in a negative sine wave period of the power supply voltage; another diode allowing the power factor capacitor to be charged during the second switching element being OFF; a third switching element connected in parallel to the diode; a fourth switching element connected in parallel to the other diode; and a controller controlling the motor to save power by controlling the third and fourth switching elements when a charged voltage in the power factor correction capacitor reaches a predetermined set value.
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