中乐彩

今天是2019年4月9日 星期二,歡迎光臨本站 安徽佑賽科技股份有限公司 網址: www.2199hq.com

有源Vs無源

有源和無源的定義:

        目前諧波治理基本上由有源濾波器和無源濾波器來實現。

        有源濾波器的控制主要由諧波信號的檢測和補償電流的產生兩大分量組成。通過數據采樣,FFT分析得出系統電網中電流、電壓的畸變部分,然后采用適當的控制方法控制功率逆變器發出與電網中諧波幅值相等,方向相反的諧波電流,注入電網,從而將電網中的諧波抵消。這兩個環節共同決定著有源濾波器的品質。

       無源濾波器采用由電力電容器、電抗器、電阻器組合而成的LC低阻抗通路進行濾波。由于無源濾波是通過在系統中為諧波提供一個并聯低阻通路,以起到濾波作用,因此濾波特性由配電系統及無源濾波器的阻抗比所決定。

有源濾波器和無源濾波器的區別:

 

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