Direct-current frequency conversion circuit, direct-current frequency conversion driving module and heat pump device

• Main Authors: YU HUAPING, LAN JINGHAO, CHEN FAN
• Format: Patent
• Language: Chinese; English
• Published: 09.04.2024
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

According to the direct-current frequency conversion circuit, the direct-current frequency conversion driving module and the heat pump device, the hardware control switch and the bus voltage sampling module are matched with the MCU, meanwhile, the PFC boost starting chip is detected, when the direct-current frequency conversion circuit does not work, the hardware control switch is turned off, the PFC boost starting chip is not started, and the direct-current frequency conversion driving module is started. The MCU does not need to judge whether the PFC boost starting chip is started or not; when the direct-current frequency conversion circuit works, the MCU controls the hardware control switch to be turned on, the PFC boost starting chip is automatically started, and whether the output voltage reaches a target value or not is judged by the MCU through the bus voltage sampling module, so that whether the PFC boost starting module works normally or not can be accurately judged. According to the embodiment of the