摘要
针对矩阵整流器输入电压不平衡和电压跌落的情况会对输出直流电压产生影响,采用一种带反馈控制策略的电流空间矢量调制算法。对实时检测输出的直流电压值与目标电压进行比较,再采用比例积分控制动态调整调制系数,保证输出电压平均值与设定值一致,同时抑制纹波。在Matlab/Simulink平台上建立模型,设定三相输入电压平衡、三相输入电压不平衡和电压跌落等情况进行仿真,仿真结果验证了所研究控制策略的正确性和有效性。
The input voltage unbalance and drop situation of matrix converter will affect the output dc voltage, a feedback control strategy with current space vector modulation algorithm is adopted. Through the real-time detection output dc voltage compared with the target voltage. The proportional integral control is used to adjust dynamically the modulation coefficient and ensure the average output voltage consistent with inhibition of ripple at the same time. In order to validate the control strategy, a practical simulation model of matrix rectifier is built up with Matlab/Simulink and simulated under the condition of balanced three-phase input voltage, imbalanced three-phase input voltage and voltage drop. The results are consistent with analysis.
出处
《自动化与信息工程》
2013年第1期34-40,共7页
Automation & Information Engineering
