摘要
本文在输入电源非平衡的条件下 ,介绍了空间矢量调制的矩阵变换器的两种输入电流偏置角的控制策略。第一种控制策略使输入电流矢量与输入电压矢量保持固定偏置角。第二种控制策略中 ,输入电流矢量根据输入电压正、负序成分进行动态调制。对两种情况下的输入电流谐波成分进行了动态分析。仿真结果表明 :和方式 1相比 ,方式 2可减少矩阵变换器输入电流谐波。
This paper introduces two control strategies of the input current displacement angle under input unbalance.The first one is based on keeping the input current vector in phase with the input voltage vector.In the second one,the input current displacement angle is dynamically modulated as a function of positive-and negative-sequence components of the input voltages.In both cases,the harmonic content of the input current have been evaluated analytically.The simulation results indict that method 2 can reduce harmonics of the input current than method 1.
出处
《自动化技术与应用》
2003年第8期75-78,共4页
Techniques of Automation and Applications
关键词
矩阵变换器
输入电流
控制策略
空间矢量调制
Space-vector modulation
Matrix converter
Harmonics analysis
On-off duty
