异步电动机变频供电载频损耗特性研究

Research on Carrier Frequency Loss Characteristics of Induction Motor in Variable Frequency Power Supply

针对变频供电时载波频率引起的电动机降耗问题,根据变频原理建立的变频电源模型,施加于有限元电机模型。经联合仿真计算,得出变频供电时载波频率与损耗的仿真特性关系。实验测试证明了变频供电时电动机的损耗与载波频率关系的特点,对变频电动机的设计、变频应用及节能具有参考价值。

For the consumption problem caused by carrier frequency of motor with variable frequency power supply, according to the principle of frequency conversion, the frequency conversion power model has been established, which applied to finite element model of motor. By the joint simulation algorithm, It is concluded that the characteristics relationship between the carrier frequency and loss of motor when variable frequency power supply. Through the experiment, it is proved the characteristics of relationship between the loss of the motor and carrier frequency when the carrier frequency inverter power supply. The research has a certain significance for the design of variable frequency motor, frequency conversion application and energy saving.