摘要
根据三相电压型PWM整流器的拓扑结构,在三相静止坐标系以及同步旋转dq坐标系下建立三相电压型PWM整流器的数学模型,并进行耦合分析,通过电压前馈解耦控制解决控制器的耦合问题.PWM整流器控制系统采用电压外环电流内环的双闭环控制进行分析和设计,调节器采用PI调节,开关的调制方式选用空间电压矢量脉宽调制(SVPWM).在Matlab下搭建了该控制系统的仿真模型,仿真实验证明了所设计的控制系统可以保持恒定的电压输出,具有很好的抗扰性能.
According to the topology of three-phase voltage source PWM rectifier,the mathematical model of three phase voltage source PWM rectifier has been established in synchronous dq coordinates,and coupling of three-phase voltage source PWM rectifier is analyzed.The coupled problem of rectifier is solved by the voltage feed-forward decoupling control.The voltage outer loop and current inner loop of double closed-loop are introduced to analyze and design the PWM rectifier control system,and PI regulator is adopted.The voltage space vector PWM is introduced in modulation of the switch.Simulation results show that the designed control system can keep a constant voltage output and have good anti-interference performance.
出处
《兰州交通大学学报》
CAS
2017年第3期70-75,共6页
Journal of Lanzhou Jiaotong University
基金
国家自然科学基金(61661027)
