高效、高功率因数的稀土永磁电机为水泵节能开辟了新途径。
The development of permanent magnet electrical machinery with high efficiency and high power factor supply new ways for water pump saving energy.
结果水泵有效功率和输入功率均随着电机频率的下降而不断降低，同时水泵效率也随着频率下降而降低。
The results show that available power and power input of water pump continuously decline with motor frequency reducing, and pump efficiency also decrease at the same time.
结果水泵有效功率和输入功率均随着电机频率的下降而不断降低，同时水泵效率也随着频率下降而降低。
The results show that available power and power input of water pump continuously decline with motor frequency reducing, and pump efficiency also decrease at the same time.
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