摘要
为了提高三相电压型PWM整流器直流电压响应特性,提出了基于EL模型的无源控制与非线性PI控制相结合的混合控制方法。根据电压型PWM整流器主电路的拓扑结构,建立了其在两相同步旋转dq坐标系下的EL模型。利用基于EL模型和注入阻尼方法设计的无源控制器控制交流电流,利用非线性PI控制器控制直流电压,使整流器直流电压具有优秀的动、静态特性和对负载的鲁棒性;同时,也实现了交流电流正弦化及单位功率因数。仿真和实物实验结果均表明,提出的三相电压型PWM整流器混合控制方法是可行的。
In order to improve the response characteristics of three-phase voltage source pulse width modulation （PWM） rectifier＇ DC voltage, a hybrid control method between passivity-based control based on EL model and nonlinear PI control was presented. According to the topological structure of three-phase voltage source rectifier, its Euler-Lagrange model in synchronous dq coordinates was established. Take advantage of the passive controller based on EL model and damp injection to control AC current, and make use of the nonlinear PI controller to control DC voltage. This method can make DC voltage have perfect static and dynamic performances and robustness to load disturbance. Simultaneously, AC current synchronizes with the AC voltage, and power factor is unitized. The simulation results and the practicality experiment results indicate that the hybrid control method is feasible.
出处
《电气传动》
北大核心
2015年第1期19-24,共6页
Electric Drive
基金
国家自然科学基金资助项目(51077005)
北京市属高校科技创新能力提升计划项目(PXM2013)
关键词
脉宽调制整流器
欧拉-拉格朗日模型
非线性比例-积分控制
无源控制
阻尼注入
pulse width modulation rectifier
Euler-Lagrange model
nonlinear proportional-integral control
passivity-based control
damp injection
