Application example of brushless motor in air conditioning industry

Variable frequency air conditioning is a popular air conditioning product nowadays, and the merchants' propaganda is once a day. Do you know that the key to the power saving of air conditioning is the result of using brushless motor to replace the traditional carbon brush motor.

Household air-conditioning compressors originally used single-phase asynchronous motors, which controlled their operation by switching. Noise and high temperature change range were its shortcomings. In the early 1990s, Toshiba first adopted the variable-frequency speed regulation of asynchronous motor in compressor control. The advantages of variable-frequency speed regulation promoted the development of variable-frequency air conditioning. In recent years, Hitachi, Sanyo and other companies in Japan have begun to use permanent magnet brushless DC motors to replace the variable-frequency speed regulation of asynchronous motors, which has significantly improved efficiency, achieved better energy-saving effect and further reduced noise. Under the same rated power and rated speed, if the volume and weight of single-phase asynchronous motors are 100%, then the volume and weight of permanent magnet brushless DC motors are 38.6%, 34.8%, and the amount of copper used is 20.9%, The iron consumption is 36.5%, the efficiency is increased by more than 10%, and the speed regulation is convenient, and the price is equivalent to the variable frequency speed regulation of non synchronous motor. The application of permanent magnet brushless DC motor in air conditioning promotes the upgrading of air conditioning agents.