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ENERGY-SAVING TYPE HYDRAULIC UNIT USING IPM MOTOR AND INVERTER HAVING PID CONTROL FUNCTION
ENERGY-SAVING TYPE HYDRAULIC UNIT USING IPM MOTOR AND INVERTER HAVING PID CONTROL FUNCTION
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机译：使用IPM电机和具有PID控制功能的变频器的节能型液压单元
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摘要
PURPOSE: A energy-saving type hydraulic unit using an IPM motor and an inverter having PID control function is provided to keep the pressure of hydraulic oil uniform at setting pressure by controlling the rpm of the IPM motor with a pressure sensor. CONSTITUTION: In a hydraulic unit, an IPM motor(30) is connected to a hydraulic pump(20) and drives the hydraulic pump. A pressure sensor(22) is installed at the outlet of the hydraulic pump. A control unit(40) includes an inverter having PID control function, and an input/display panel. The control unit receives a pressure value from the pressure sensor, and transmits an output value to the IPM motor.
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