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基于电力电子电抗器的软启动器等效电路模型
资料介绍
针对高压大容量电动机启动电流过大的问题,提出一种基于电力电子电抗器的软启动方法,分析了软启动器的工作原理,建立了软启动器的等效电路模型,分析了电力电子电抗器的电抗变换机理,分别进行了高压大功率电动机直接启动和软启动的Matlab仿真,设计了高压大功率电动机软启动器,进行了试验,并将软启动器成功运用于19000kW高压大容量异步电机的软启动。仿真及试验结果表明:该软启动器可以实现高压大容量电动机的平滑软启动,具有启动电流小、启动平稳、无二次电流冲击的特点。
There is too large starting current when high-voltage large motors start up direct-on line,it will cause many damages.In order to solve these problems,a soft starting method which adopted power electronic reactor in its main circuit was designed.The working principle of high-voltage motors′soft starter based on the power electronic reactor was analyzed.It was required to establish the equivalent-circuit model of power electronic reactor to research its reactance conversion mechanism.The simulation model of high-voltage motor was established using Matlab,andthe simulations of direct starting and soft starting process were carried out.A high-voltage motor soft starter was successfully designed and used in soft starting of a 19 000 kW motor.The experimental results show that it can help the highvoltage motor start smoothly and has many characteristics such as low starting current,little impact on grid and high performance.
部分文件列表
| 文件名 | 大小 |
| 基于电力电子电抗器的软启动器等效电路模型.pdf | 2M |
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