Control Method of Single-phase Inverter Based Grounding System in Distribution Networks

Wen Wang, L. Yan, X. Zeng, Xin Zhao, Baoze Wei, Josep M. Guerrero

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Abstrakt

The asymmetry of the inherent distributed capacitances causes the rise of neutral-to-ground voltage in ungrounded system or high resistance grounded system. Overvoltage may occur in resonant grounded system if Petersen coil is resonant with the distributed capacitances. Thus, the restraint of neutral-to-ground voltage is critical for the safety of distribution networks. An active grounding system based on single-phase inverter is proposed to achieve this objective. Relationship between output current of the system and neutral-to-ground voltage is derived to explain the principle of neutral-to-ground voltage compensation. Then, a current control method consisting of proportional resonant (PR) and proportional integral (PI) with capacitive current feedback is then proposed to guarantee sufficient output current accuracy and stability margin subjecting to large range of load change. The performance of the control method is presented in detail. Experimental results prove the effectiveness and novelty of the proposed grounding system and control method.
OriginalsprogEngelsk
TitelProceedings of 8th IEEE Energy Conversion Congress and Exposition (ECCE), 2016
Antal sider6
ForlagIEEE Press
Publikationsdatosep. 2016
ISBN (Elektronisk)978-1-5090-0737-0
DOI
StatusUdgivet - sep. 2016
Begivenhed 8th Annual IEEE Energy Conversion Congress & Exposition: ECCE 2016 - Milwaukee, WI, USA
Varighed: 18 sep. 201622 sep. 2016
http://www.ieee-ecce.org/

Konference

Konference 8th Annual IEEE Energy Conversion Congress & Exposition
LandUSA
ByMilwaukee, WI
Periode18/09/201622/09/2016
SponsorIEEE, IEEE Industry Applications Society (IAS), IEEE Power Electronics and Industry Applications Societies (PELS)
Internetadresse

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Citationsformater

Wang, W., Yan, L., Zeng, X., Zhao, X., Wei, B., & Guerrero, J. M. (2016). Control Method of Single-phase Inverter Based Grounding System in Distribution Networks. I Proceedings of 8th IEEE Energy Conversion Congress and Exposition (ECCE), 2016 IEEE Press. https://doi.org/10.1109/ECCE.2016.7854962