Abstract: The drum washing and drying machine has the functions of cleaning and drying clothes, the market demand for the drum washer-dryer is steadily increasing, and the demand for cost reduction also continues. Analyzing the needs and proposing a new topology of the drum washing and drying machine. According to the operating conditions, time-sharing multiplexed fans, in the washing and drying, the inductance characteristics of the stator winding of the fan are used to replace the grid-side reactor, which reduces the system cost. Then, combined with the topological structure of the dual inverter circuit, APFC is used to optimize the grid-side current, reduce grid-side harmonics, increase the amplitude of bus voltage, and increase the high-speed dehydration loading capacity of the motor. Finally, the simulation verifies the effectiveness of this scheme and provides new technical ideas for subsequent product development.

Key words: Drum washing and drying machine, Reactor, APFC, Topology