电器与能效管理技术
電器與能效管理技術
전기여능효관리기술
Low Voltage Apparatus
2015年
7期
49-53
,共5页
有源电力滤波器%无滤波器%单相谐波检测
有源電力濾波器%無濾波器%單相諧波檢測
유원전력려파기%무려파기%단상해파검측
active power filter%filter free%single-phase harmonic detection
针对单相有源电力滤波器（APF）谐波及无功电流检测的问题，提出一种无滤波器的单相谐波检测方法。将各次谐波电流分别分解为正、负序分量的叠加，再通过两相静止坐标系下的旋转叠加以滤出基波电流。无需传统检测方法的数字低通滤波器（LPF），检测精度、实时性高，并可以应对电网电压畸变等问题。最后仿真验证了检测方法的有效性。
針對單相有源電力濾波器（APF）諧波及無功電流檢測的問題，提齣一種無濾波器的單相諧波檢測方法。將各次諧波電流分彆分解為正、負序分量的疊加，再通過兩相靜止坐標繫下的鏇轉疊加以濾齣基波電流。無需傳統檢測方法的數字低通濾波器（LPF），檢測精度、實時性高，併可以應對電網電壓畸變等問題。最後倣真驗證瞭檢測方法的有效性。
침대단상유원전력려파기（APF）해파급무공전류검측적문제，제출일충무려파기적단상해파검측방법。장각차해파전류분별분해위정、부서분량적첩가，재통과량상정지좌표계하적선전첩가이려출기파전류。무수전통검측방법적수자저통려파기（LPF），검측정도、실시성고，병가이응대전망전압기변등문제。최후방진험증료검측방법적유효성。
In order to detect the harmonic and reactive current of single-phase active power filter(APF) system,a filter free single-phase harmonic detection method was proposed.First,the harmonic current is decomposed into positive and negative sequence components.Then this decomposed current is rotated and superimposed in the two-phase stationary coordinate system to achieve the purpose of filtering out fundamental current.Since it is unnecessary to use the traditional digital low pass filter(LPF),this method has a high detection accuracy,high real-time performance,and can deal with the problem of power grid voltage distortion.The simulation verifies the effectiveness of the proposed method.
