摘要
以三相全桥整流器为研究对象,通过分析工作过程,建立数学模型,进行时域求解。结合最小二乘法,给出了使用网侧电压、电流数据测量整流器交流侧和直流侧阻抗参数的方法。在任意触发角、端口电压含有谐波的情况下,可以获得整流器内部的阻抗参数。通过合理选择样本数据,主动规避误差,所提方法具有较高的测量精度。
This paper studied a typical harmonic source,three-phase full bridge rectifier. An impedance measurement method was proposed based on the network side voltage and current data through the analysis of its work process,the establishment of mathematical models and the application of least square method. Using this method,the impedance parameters of the rectifier can be obtained in the complicated case where the trigger angle is arbitrary and the port voltage contains harmonics. Through reasonable selection of sample data,active error avoidance,the method has a high accuracy.
出处
《电器与能效管理技术》
2016年第20期38-42,82,共6页
Electrical & Energy Management Technology
基金
中国电力科学院项目(GY71-14-004)
关键词
三相全桥整流器
最小二乘法
阻抗测量
误差
three-phase full-bridge rectifier
least square method
impedance measurement
error
