Motor application apparatus and control method thereof
AssigneeJohnson Electric International AG
InventorsYouqing Xiang, Shiwen Wang, Wanjun Wang, Jin Yang, Jun Zhang
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Abstract
A motor application apparatus is provided. The apparatus includes a motor, a cooling device, a temperature sensor to detect a temperature of the motor, a microcontroller configured to output a controlling signal to control rotation of the motor and acquire a supply current and a rotation speed of the motor in real time. When the temperature of the motor is higher than a predetermined value or the microcontroller determines that the motor is in a high temperature operation state according to the current and the rotation speed, the microcontroller outputs a protection signal to start the cooling device.
Claims12
A motor application apparatus, comprising:
- a motor;
- a cooling device;
- and
- a microcontroller configured to output a control signal to control rotation of the motor and acquire a current and a rotation speed of the motor in real time,
- wherein the microcontroller outputs a first protection signal to start the cooling device when a power loss of the motor is larger than a predetermined power loss and the rotation speed of the motor is lower than a predetermined rotation speed simultaneously;
- and the power loss of the motor is calculated according to a torque, an efficiency and a rotation speed;
- a temperature sensor to detect a temperature of the motor;
- a cooling control circuit which comprises a comparator and an OR gate, wherein a first input end of the comparator is directly connected to the temperature sensor, an output end of the comparator is directly connected to a first input end of the OR gate, an output end of the OR gate is directly coupled with the cooling device.
Dependencies are inferred from the claim text.