摘要
阐述了VIENNA整流器的工作原理,建立其数学模型;针对VIENNA整流器的运行特点,采用电压电流双闭环控制,为了提高电压外环的抗干扰能力,电压外环加入PI控制,合理地控制了因扰动引起的输出电压不稳的弊端;电流内环采用前馈解耦控制,实现d-q轴电流的单独控制,减少耦合带来的误差,提高了功率因数,减小无功。最后,对算法进行了Matlab建模仿真,仿真结果表明:外环采用PI控制,提高了系统的抗干扰能力;内环采用前馈解耦控制,减少了输入电流谐波畸变,提高了功率因数。
It describes the working principle of VIENNA rectifier and establishes its mathematical model. According to the operation characteristics of VIENNA rectifier, it adopts double closed-loop control of voltage and current. In order to improve the anti-interference ability of the voltage outer loop, PI control is added to the voltage outer loop to reasonably control the malpractice of output voltage instability caused by disturbance. Feed-forward decoupling control is adopted in the inner loop to realize the separate control of d-q axis current, reduce the error caused by coupling, improve the power factor and reduce reactive power. Finally, the algorithm is modeled and simulated by Matlab. The simulation results show that PI control is used in the outer loop to improve the anti-jamming ability of the system. And feed-forward decoupling control is used in the inner loop to reduce the harmonic distortion of the input current and improve the power factor.
作者
郭殿林
杨成
常娜娜
GUO Dianlin;YANG Cheng;CHANG Nana(School of Electricl & Control Engineering, Heilongjiang University of Science & Technology, Harbin 150022,China)
出处
《黑龙江电力》
CAS
2019年第2期95-99,共5页
Heilongjiang Electric Power
基金
哈尔滨市科技局后备青年创新项目(2017RAQXJ028)
