Abstract: For the inverter refrigerator compressor, Cool-Tech^TM technology design the current feedforward torque compensation algorithm in the software; In the hardware Silan high-performance low-power microcontrollers and customized super-junction power MOSFET are selected. Experiments show that, compared with the sensorless FOC control and the traditional square wave control, Cool-Tech^TM technology can effectively reduce the system noise and vibration, reduce the inverter power consumption and improve system COP value.

Key words: Inverter refrigerator, Torque compensation, Noise and vibration, Sensorless, COP