Low-voltage air source heat pump suitable for low-temperature rural areas

• Main Authors: YU WEI, YANG XU, DU XIANPING, HUA QINGMEI
• Format: Patent
• Language: Chinese; English
• Published: 15.04.2022
• 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; BASIC ELECTRONIC CIRCUITRY; BLASTING; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CODE CONVERSION IN GENERAL; CODING; COMBINED HEATING AND REFRIGERATION SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DECODING; ELECTRICITY; GENERATION; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; SYSTEMS FOR STORING ELECTRIC ENERGY; WEAPONS

The invention discloses a low-voltage air source heat pump suitable for low-temperature rural areas. According to the invention, a controllable SCR rectification unit rectifies an input alternating current and then outputs a direct current to supply power to a direct current load; the controllable SCR rectifying unit also outputs the output direct current to the passive inverter circuit; the passive inverter circuit inverts the input direct current and then transmits the direct current to an alternating current load for power supply; and the MCU control unit controls the operation of the controllable SCR rectification unit according to the collected data. The ADC circuit is arranged to monitor the fluctuation range of the external input voltage in real time, when the external input voltage is too low, the MCU adjusts the SCR rectification unit to ensure that the rectification circuit stably outputs direct current, meanwhile, the SCR outputs stable alternating current through the passive inverter circuit to dr