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Dual Role CDSC-Based Dual Vector Control for Effective Operation of DVR With Harmonic Mitigation

機器翻譯基于CDsC的雙向矢量控制,用于諧波抑制的DVR有效運行

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【摘要】For the effective operation of a dynamic voltage restorer (DVR), a control strategy plays a significant role. This paper presents an enhanced control strategy for DVR using dual role cascaded delay signal cancellation (CDSC)-based dual vector control (DVC) under unbalanced and distorted grid conditions. Based on the numerical analysis, it is found that the CDSC prefilter is a promising solution when grid voltage is distorted by symmetric, asymmetric harmonics, and unbalanced sag. Mainly, the CDSC prefilter extracts instantaneous symmetrical components of the grid voltage required for voltage sags detection and generation of fundamental component of reference voltage for the DVR. A CDSC-based DVC algorithm with inductor current and capacitor voltage feedback is implemented in a synchronous reference frame, which tracks the fundamental DVR reference voltages. An extractor based on the modified CDSC strategy is designed to extract harmonics from load voltage during distorted grid conditions. These extracted harmonic components (nonfundamental) are added in phase opposition with fundamental component and fed to pulse width modulation block to generate reference voltages. Experimental studies are conducted on scaled down (100 V, 0.5?kVA) laboratory prototype DVR to verify the effectiveness of the proposed control algorithm under unbalanced and distorted grid conditions.

【作者】Anbalagan Karthikeyan; Deshpande Gururaj Abhilash Krishna; Sushant Kumar; B. Venkatesa Perumal; Sukumar Mishra;

【作者單位】Department of Electrical and Electronics Engineering, National Institute of Technology Karnataka, Mangalore, India; Department of Electrical and Electronics Engineering, National Institute of Technology Karnataka, Mangalore, India; Department of Electrical and Electronics Engineering, National Institute of Technology Karnataka, Mangalore, India; Department of Electrical and Electronics Engineering, National Institute of Technology Karnataka, Mangalore, India; Indian Institute of Technology Delhi, New Delhi, India;

【年(卷),期】2019,66,1

【頁碼】4-13

【總頁數】10

【正文語種】eng

【中圖分類】;

【關鍵詞】Harmonic analysis; Power harmonic filters; Delays; Power quality; Voltage control; Phase locked loops; Filtering theory;


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