摘要
分析了PWM并网逆变器在dq0坐标系下的数学模型,推导出了内外环的数学模型,建立了改进的双闭环控制的系统模型,并在此基础上进行简化及合理变换,运用改进的二阶法推导出双闭环控制时的PI调节器参数计算公式。最后在MATLAB/simulink中搭建平台进行仿真,并与传统方法的结果相比较,验证其精确性和正确性。
A simplified mathematic model of Pulse Width Modulation （PWM） inverter is analyzed in the dq0 rotation frame, the inner-outer loop＇ s mathematic model are deduced, the double closed-loop control system model are built. Based on the simplified and reasonable transformation, the PI adjustor parameters formula under the double closed-loop control based on improved second order method can be deduced. Finally, the double closed- loop control system is built in MATLAB/simulink, and compare with the traditional method＇ s results, the simula- tion results demonstrate the correctness and effectiveness of the design.
出处
《科学技术与工程》
北大核心
2013年第2期319-324,共6页
Science Technology and Engineering
