Analysis and mitigation of reflected wave voltages and currents in WBG devices based motor drives
Analysis and mitigation of reflected wave voltages and currents in WBG devices based motor drives
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基于 WBG 器件的电机驱动中反射波电压和电流的分析和缓解
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
F. Luo
中科院分区：
文献类型：
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作者：
B. Narayanasamy;A. Sathyanarayanan;A. Deshpande;F. Luo
在基于逆变器的电机驱动中，功率器件和电缆的快速开关速度会导致电机端出现过压。与电机端过电压相对应，逆变器端也有电流。虽然过电压增加了电机和绝缘上的应力，但负载寄生以及电缆增加了功率器件的开关损耗。由于开关时间更快，这些效应在使用 WBG 器件的转换器中更为明显。以前的工作仅研究了 2L 转换器中的过压和过流。 2L 转换器具有低源阻抗和高负载阻抗。这项工作涉及电感源阻抗和RC终端网络对反射波现象和器件开关损耗的影响的研究。仿真和实验结果验证了分析。
In inverter based motor drives, the fast switching speeds of the power devices along with the cable, result in overvoltage at the motor end. Corresponding to the overvoltage at the motor end, there are currents at the inverter end. While the overvoltage increases the stress on motor and insulation, the load parasitics along with the cable increases the switching loss of the power devices. These effects are more pronounced in converters using WBG devices because of faster switching times. Previous works have only studied either over-voltages & currents in 2-L converters. The 2-L converters have low source and high load impedances. This work involves the study of the effect of inductive source impedance and RC terminal network on the reflected wave phenomenon and the switching loss of the device. Simulation and experimental results are shown to verify the analysis.