压缩机PFC电路的载波频率控制方法、装置和压缩机
By calculating the motor speed in the compressor and setting different carrier frequencies, the problems of unstable bus voltage and low efficiency caused by the reduction of PFC inductance are solved, achieving a balance between high-frequency operation stability and low-frequency energy efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GREE ELECTRIC APPLIANCE INC OF ZHUHAI
- Filing Date
- 2023-01-05
- Publication Date
- 2026-07-17
AI Technical Summary
After reducing the PFC inductance, the bus voltage becomes unstable, causing the compressor or motor to fail to operate at high frequencies. Furthermore, increasing the switching frequency of the switching transistor leads to low efficiency.
By calculating the first and second speeds of the compressor motor, it is determined whether to activate the PFC circuit and the carrier frequency is set, namely the first carrier frequency and the second carrier frequency, to control the turn-on and turn-off frequencies of the switching transistor, so as to achieve both the stability of the bus voltage and efficiency.
The bus voltage fluctuation is reduced during high-frequency operation, resulting in more stable operation. At the same time, the device loss is reduced during low-frequency operation, ensuring low-frequency energy efficiency.
Smart Images
Figure CN116094410B_ABST