电力系统保护与控制
電力繫統保護與控製
전력계통보호여공제
POWER SYSTM PROTECTION AND CONTROL
2012年
23期
80-86
,共7页
有源电力滤波器%欧拉-拉格朗日模型%瞬时无功功率理论%无源控制%负载有功电流检测%低通滤波器
有源電力濾波器%歐拉-拉格朗日模型%瞬時無功功率理論%無源控製%負載有功電流檢測%低通濾波器
유원전력려파기%구랍-랍격랑일모형%순시무공공솔이론%무원공제%부재유공전류검측%저통려파기
active power filter%Euler-Lagrange model%instantaneous reactive power theory%passivity based control%load active current detection%low-pass filter
基于欧拉-拉格朗日(Euler Lagrange-EL)模型的有源电力滤波器(Active Power Filter-APF)无源性控制中将对负载谐波电流的跟踪转换为对系统电源电流的控制,降低了控制器的跟踪难度.针对已有的 APF 无源性控制文献在设计系统电源电流期望平衡点时需要提取负载有功电流,指出负载有功电流只是 APF 直流侧电压闭环的一个前馈信号,提出一种改进的无需检测负载有功电流的基于 EL 模型的 APF 无源性控制方法,在降低控制器算法复杂程度的同时去掉负载有功电流提取算法中数字低通滤波器(Low Pass Filter-LPF)带来的延时.仿真和实验证明了方法的有效性.
基于歐拉-拉格朗日(Euler Lagrange-EL)模型的有源電力濾波器(Active Power Filter-APF)無源性控製中將對負載諧波電流的跟蹤轉換為對繫統電源電流的控製,降低瞭控製器的跟蹤難度.針對已有的 APF 無源性控製文獻在設計繫統電源電流期望平衡點時需要提取負載有功電流,指齣負載有功電流隻是 APF 直流側電壓閉環的一箇前饋信號,提齣一種改進的無需檢測負載有功電流的基于 EL 模型的 APF 無源性控製方法,在降低控製器算法複雜程度的同時去掉負載有功電流提取算法中數字低通濾波器(Low Pass Filter-LPF)帶來的延時.倣真和實驗證明瞭方法的有效性.
기우구랍-랍격랑일(Euler Lagrange-EL)모형적유원전력려파기(Active Power Filter-APF)무원성공제중장대부재해파전류적근종전환위대계통전원전류적공제,강저료공제기적근종난도.침대이유적 APF 무원성공제문헌재설계계통전원전류기망평형점시수요제취부재유공전류,지출부재유공전류지시 APF 직류측전압폐배적일개전궤신호,제출일충개진적무수검측부재유공전류적기우 EL 모형적 APF 무원성공제방법,재강저공제기산법복잡정도적동시거도부재유공전류제취산법중수자저통려파기(Low Pass Filter-LPF)대래적연시.방진화실험증명료방법적유효성.
Since load harmonic current track is converted to the system supply current control in Euler-Lagrange (EL) model-based active power filter (APF) passive-based control, it reduces the difficulty of tracking of the controller. In order to overcome the problem of load active current detection while designing the expected equilibrium point of system supply current in the existing literature, this paper concludes that the load active current detection is just a feed forward signal of DC voltage closed-loop controller and proposes an improved passivity-based control of APF based on the EL model which does not need load active current detection. This has drastically reduced the complexity of the controller and removed the delays of control which is caused by the low-pass filter when extracting load active current. Simulation and experimental results show the correctness of the method.
