Linear compressor driving method and device, linear compressor and refrigerator

• Main Authors: HOU TONGYAO, ZHANG SHANFANG, WANG GUOQING, PENG HANGUANG, LI XIUJUN, SUN BIN
• Format: Patent
• Language: Chinese; English
• Published: 17.07.2020
• Subjects: BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; WEAPONS

The invention discloses a linear compressor driving method and device, a linear compressor and a refrigerator. The method comprises steps as follows: acquiring voltage and current of the linear compressor at the current sampling moment; determining counter electromotive force and virtual counter electromotive force of the linear compressor according to the voltage and the current at the current sampling moment; determining a rotating angle of a promoter of the linear compressor in a two-phase coordinate system according to the counter electromotive force and the virtual counter electromotive force of the linear compressor; and controlling the voltage of the linear compressor according to the rotating angle and a preset value of the promoter in the two-phase coordinate system. The counter electromotive force and the virtual counter electromotive force of the linear compressor are determined by sampling the voltage and the current of the linear compressor, the position of the promoter isdetermined by adding one