应用新型能量函数的PWM整流器无源性控制方法  

Passivity-based Control Method for PWM Rectifier with the Application of Novel Energy Function

作　　者：袁敞 戴笃猛 邱俊卿 YUAN Chang;DAI Dumeng;QIU Junqing(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Source,North China Electric Power University,Beijing 102206,China)

机构地区：[1]新能源电力系统国家重点实验室(华北电力大学),北京102206

出　　处：《电力系统及其自动化学报》2022年第3期45-50,共6页Proceedings of the CSU-EPSA

基　　金：国家自然科学基金资助项目(51877081);国家重点研发计划资助项目(2018YFB0905800)。

摘　　要：无源性控制作为一种本质稳定的非线性控制方法,是解决大量电力电子换流器并入电网后引发失稳现象的新型手段,但在PWM整流器直流侧电压参考值突变时,无源性控制下的直流侧电压跟踪其参考值相对缓慢。本文基于能量函数分析了传统无源性控制收敛速度较慢的根本原因,在此基础上提出了一种新型的能量函数,在该能量函数的基础上构建的无源性控制器具有误差能量函数的收敛速度与状态变量的误差相独立的优点。在三相PWM整流器的直流侧电压参考值突变时,这种应用新型能量函数的无源性控制器可以显著地提高直流侧电压的跟踪速度,保证稳态之后的三相电流具有良好的波形质量,并且拥有较强的抗外界参数扰动的能力。仿真验证了所提策略的有效性。As an inherently stable nonlinear control method,passivity-based control(PBC)is a novel means to solve the instability phenomenon caused by a large number of power electronic converters that are integrated into power grid.However,when the reference value of the DC-side voltage of a PWM rectifier changes suddenly,the DC-side voltage under PBC is relatively slow to track its reference value.Based on an energy function,the root cause of the slow convergence speed under the traditional PBC is analyzed in this paper,and a novel energy function is put forward accordingly.On this basis,a passivity controller is constructed,which has an advantage that the convergence speed of the error energy function is independent of the error of the state variable.When the DC-side voltage’s reference value of a threephase PWM rectifier changes suddenly,this controller which applies the novel energy function can significantly improve the tracking speed of the DC-side voltage,ensure the satisfying waveform quality of three-phase current after the steady state,and have a strong capability to resist the disturbance of external parameters.Simulation results verify the effectiveness of the proposed strategy.

关 键 词：无源性控制 能量函数 动态响应速度 欧拉-拉格朗日模型 波形质量 

分 类 号：TM46[电气工程—电器]