CAJ | 학술논문

针对有源电力滤波器模型的非线性强耦合特点,提出了一种基于状态反馈精确线性化的非线性控制策略.采用状态空间平均建模方法建立了三相并联型有源电力滤波器的仿射非线性模型,并从理论上证明了所建立的模型满足状态反馈精确线性化的条件,推导出了非线性系统的反馈控制律,实现了原系统的状态反馈精确线性化.再利用线性系统控制理论设计了控制器,实现了原非线性系统的解耦控制.与PI控制的三角波调制控制方案进行仿真对比分析,验证了所提出的控制方案性能优越,各项性能指标均优于PI控制方案.
침대유원전력려파기모형적비선성강우합특점,제출료일충기우상태반궤정학선성화적비선성공제책략.채용상태공간평균건모방법건립료삼상병련형유원전력려파기적방사비선성모형,병종이론상증명료소건립적모형만족상태반궤정학선성화적조건,추도출료비선성계통적반궤공제률,실현료원계통적상태반궤정학선성화.재이용선성계통공제이론설계료공제기,실현료원비선성계통적해우공제.여PI공제적삼각파조제공제방안진행방진대비분석,험증료소제출적공제방안성능우월,각항성능지표균우우PI공제방안.
As the APF(Active Power Filter)possesses the strong-coupled nonlinearity,a control method based on the state feedback exact linearization is proposed.An affine nonlinear model of three-phase shunt APF is built by the state-space average modeling method and it is theoretically verified that the model satisfies the conditions of state feedback exact linearization.The feedback control law of nonlinear system is derived to realize the state feedback exact linearization of the APF affine model,with which a controller is designed to implement the decoupled control of APF.Simulation is carried out to compare it with the triangle wave modulation method of PI control,which verifies its superiority with better performance indexes.