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电网技术  2006 

目标函数优化的有源滤波器差拍控制算法

, PP. 77-80

Keywords: 有源滤波器,范数,目标函数优化,差拍控制算法

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Abstract:

以并联型有源滤波器为例,以降低差拍控制算法的复杂度为目的,通过优化目标函数提出了3种差拍控制算法。其中一范数差拍控制算法和无穷范数差拍控制算法通过构造新目标函数对算法进行化简,更适于控制三相有源滤波器,其新目标函数与传统差拍控制的二范数目标函数等价。通过优化传统差拍控制的目标函数得到改进二范数差拍控制算法,该算法的运算量比一范数算法和无穷范数算法少,适用于控制三相及单相有源滤波器。仿真结果表明上述3种算法均具有与传统差拍算法十分接近的控制精度,对控制周期变化的适应性相同,可完全取代传统差拍算法。考虑到算法的复杂度,改进二范数差拍控制算法最具应用价值。

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