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Power Analysis Method Based on DC Bus Voltage Waveform

机译:基于直流母线电压波形的功率分析方法

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摘要

This essay analyzes the measurement of the power factor in the drive motor system of the frequency converter. Due to the fact that it is inconvenient to utilize the power analyzer to acquire the motor power factor directly. A method is proposed. We can collect the DC bus signal waveform. Then we the could reconstruct motor stator three-phase voltage and current to test indirectly the motor power factor. In addition, there are some simulations and data collected from experimental device in order to verifying accuracy. Congruously, the experimental results show that within a certain error range, the motor power factor can be measured by voltage and current reconstruction.
机译:本文分析了变频器驱动电动机系统中功率因数的测量。由于使用功率分析仪不方便直接获取电动机功率因数这一事实。提出了一种方法。我们可以收集直流母线信号波形。然后,我们可以重建电动机定子的三相电压和电流,以间接测试电动机的功率因数。此外,为了验证准确性,还从实验设备中收集了一些模拟和数据。实验结果一致地表明,在一定误差范围内,可以通过电压和电流重构来测量电动机的功率因数。

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