Design, Analysis, and Impacts of Sinusoidal LC Filter on Pulsewidth Modulated Inverter Fed-Induction Motor Drive
Design, Analysis, and Impacts of Sinusoidal LC Filter on Pulsewidth Modulated Inverter Fed-Induction Motor Drive
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正弦 LC 滤波器的设计、分析及其对脉宽调制逆变器馈电感应电机驱动的影响
DOI：
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发表时间：
2020
期刊：
影响因子：
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通讯作者：
R. Maheshwari
中科院分区：
文献类型：
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作者：
P. Mishra;R. Maheshwari
由脉宽调制电压源逆变器供电的鼠笼型异步电动机（SQIM）会受到电压和电流浪涌的影响。它可能导致电机中的额外损耗、绝缘故障、高轴承电流和电磁干扰。为了缓解这些问题，正弦LC滤波器被放置在VSI的交流侧。本文提出了一种新的方法来设计滤波器。在该方法中，滤波电感根据逆变器交流侧电流中的最大涟漪和滤波电感两端的电压降来选择，滤波电容根据SQIM的稳态无功功率需求来选择。所设计的滤波器上的开关电流，在驱动器中的损耗，直流环节电容器的温度，dv/dt在电机端子，定子磁通，和气隙转矩的SQIM的影响进行了讨论。在一台两电平碳化硅电压源逆变器供电的SQIM上对该方法和标准方法设计的滤波器驱动器的性能进行了实验测试和对比分析。当滤波电容器的中性点与直流链路的中点连接时，所设计的滤波器对驱动器的影响也被示出。闭环控制的SQIM驱动器与建议的滤波器的稳定性，并给出仿真结果，以验证其性能。
Squirrel-cage induction motor (SQIM) fed by a pulsewidth modulated voltage source inverter (VSI) is subjected to voltage and current surges. It may cause additional losses in the motor, insulation failure, high bearing current, and electromagnetic interference. To mitigate these problems, sinusoidal LC filter is placed at the ac-side of the VSI. This paper proposes a new methodology to design the filter. In this method, the filter inductance is chosen based on the maximum ripple in the inverter ac-side current and the voltage drop across the filter inductor, and the filter capacitor is chosen based on the steady-state reactive power demand of the SQIM. The effects of the designed filter on the switch current, losses in the drive, temperature of the dc-link capacitor, dv/dt at the motor terminal, stator flux, and air-gap torque of the SQIM are discussed. The performance of the drive with the filters, designed by the proposed method and the standard method, are experimentally tested on a two-level silicon carbide VSI-fed SQIM and comparative analysis is carried out. The impact of the designed filter on the drive is also shown when the neutral point of the filter capacitors is connected with the mid-point of the dc link. The stability of the closed-loop controlled SQIM drive with the proposed filter, and simulation results are presented to verify its performance.