李坤奇,张斌,许伟奇,路小娟

• 1:兰州交通大学自动化与电气工程学院

摘要(Abstract)：

电网不平衡时,传统控制方法会加重网侧谐波以及直流侧电压不稳定等问题。通过对PWM整流器建模分析,获得静止坐标系下的预测功率控制模型;使单位周期内的有功功率和无功功率等于给定的参考值,获得控制电压的矢量表达式,并推导出可以满足不平衡电网条件下整流器控制要求的功率补偿,从而实现不平衡条件下的整流器控制。该方法具有拓扑结构简单,动态响应较快,能够有效地实现网侧电流正弦化,单位功率因数,稳定直流侧电压等优点,通过在Simulink环境下搭建其仿真模型充分验证了该方法的正确性和有效性。

关键词(KeyWords)： 不平衡电网;PWM整流器;预测功率控制;直接功率控制;功率补偿;扩展无功功率

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51667013)~~

作者(Author): 李坤奇,张斌,许伟奇,路小娟

DOI: 10.16652/j.issn.1004-373x.2018.11.019

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