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Preliminary Investigations of the Impact of Variable-Frequency Drive (VFD) Output Voltage on Motor Efficiency 变频驱动(VFD)输出电压对电机效率影响的初步研究
因为变频驱动器(VFD)可以调节输出频率和连接电机的电压,所以VFD的电机效率在数学上取决于电机负载、频率和电压。几位研究人员发现,不仅电机负载,VFD输出频率也会影响电机效率。本文的目的是通过测量不同电压下的电机效率,研究VFD输出电压对电机效率的影响。实验结果表明,电压也会影响电机效率,制造商的电机效率数据不能应用于带有VFD的电机。引用:2019年冬季会议,佐治亚州亚特兰大,技术论文
Because variable-frequency drives (VFDs) adjust boththe output frequency and the voltage to their connected motors,the motor efficiency with a VFD is mathematically determinedby motor loads, frequency, and voltage. Several researchershave discovered that not only motor load but also VFD outputfrequency affects motor efficiency. The purpose of this paperis to investigate the impact ofVFDoutput voltageonmotor efficiencyby measuring the motor efficiency under various voltages.Theexperiment resultsshowthat the voltage also impactsthe motor efficiency and the manufacturer motor efficiencydata cannot be applied to the motors with VFDs.
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