Development of permanent magnet synchronous motor for fan-coil units

Presents the related energy efficiency standards of motors for fan-coil units. According to large quantities of measured data, expounds the performances of the developed motors including energy efficiency, controlling performance, mechanical and electrical characteristics, safety and reliability. The results show that the energy efficiency of the developed motors is markedly higher than that of single-phase AC motors. The energy efficiency of original units can be improved to be higher than the value of Class one by matching the developed motor to large temperature difference fan-coil units or to conventional fan-coil units. Analyses the influences of the relationship of power input and electric current on energy saving effect.