Design of output filter of mine-used high-voltage inverter for long-distance power supply
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摘要: 针对矿用高压变频器远距离供电时变频器功率器件IGBT频报故障、电动机有啸叫声等问题，分析认为主要原因是高压变频器工作特性导致输出波形含有高次谐波及远距离供电传输。根据变频器输出波形特征，提出了一种矿用远距离供电高压变频器输出滤波装置的设计方案，介绍了该滤波装置电抗器、电容等参数的计算方法。仿真结果表明，矿用远距离供电高压变频器侧加装该滤波装置后，电动机端电压波形较平滑，无毛刺和尖峰。样机测试结果表明，加装该滤波装置后，电动机端高次谐波被消除，总谐波失真小于5%。Abstract: For problems of frequent IGBT faults of inverter and motor whistling when mine-used high-voltage inverter supplies power for a long distance, causes were analyzed which were high-voltage inverter's working characteristic causing output waveform to contain high order harmonics and long-distance power supply transmission. A design scheme of output filter of mine-used high-voltage inverter for long-distance power supply was proposed according to output waveform characteristics of inverter. Parameter calculation methods of electric reactor and capacitance in the filter were introduced. The simulation result show that voltage waveform at motor side is smooth without voltage spikes and peaks when the filter is installed at side of mine-used high-voltage inverter for long-distance power supply. Prototype test results show that higher harmonics at motor side are eliminated when the filter is installed, and total harmonics distortion is less than 5%.
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期刊类型引用(8)
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