A Novel Technique for Reducing Leakage Current by Application of Zero-Sequence Voltage
A Novel Technique for Reducing Leakage Current by Application of Zero-Sequence Voltage
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应用零序电压降低漏电流的新技术
DOI：
10.1109/tia.2015.2391440
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Yoshihiro Matsui
中科院分区：
文献类型：
--
作者：
Hideki Ayano;Kohei Murakami;Yoshihiro Matsui
本文提出了一种降低以导电噪声形式流入电源的漏电流的技术。这种泄漏电流可能对外围设备产生不利影响，例如引起故障。所提出的技术要求我们在逆变器的输出基准电压上增加一个零序电压。可以在不影响电机驱动特性的情况下控制零序电压。在电机驱动范围内，反电动势随着电机转速的增加而增加。因此，所提出的技术可以控制零序电压作为逆变器输出频率的函数；同时实现了电机的稳定驱动和共模电流的减小。仿真和实验结果证明了该方法的有效性。
This paper proposes a technique for reducing the leakage current flowing into a power source as a conductive noise. This leakage current may have an adverse effect on the peripheral equipment, e.g., causing malfunctions. The proposed technique requires us to add a zero-sequence voltage to the output voltage reference of the inverter. The zero-sequence voltage can be controlled without affecting the driving characteristics of the motor. In a motor drive range, a counter EMF increases with an increase in the motor speed. The proposed technique, therefore, controls the zero-sequence voltage as a function of the inverter output frequency; as a result, a stable motor drive and reduction in the common-mode current are realized simultaneously. Simulation and experimental results prove the validity of the proposed technique.