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Title: Stability analysis of PV generators with consideration of P&O-based power control
Authors: Xia, Yanghong
Wei, Wei
Yu, Miao
Wang, Peng
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2018
Source: Xia, Y., Wei, W., Yu, M., & Wang, P. (2019). Stability analysis of PV generators with consideration of P&O-based power control. IEEE Transactions on Industrial Electronics, 66(8), 6483-6492. doi:10.1109/TIE.2018.2864695
Journal: IEEE Transactions on Industrial Electronics
Abstract: Photovoltaic (PV) generators have continuously increased in recent years, whose power is usually controlled through the perturbation and observation (P&O) method. In essence, the P&O method is nonlinear and discontinuous. Hence, the conventional small-signal stability analysis is not suitable anymore when the influence of the P&O-based power control is considered. Focusing on this problem, this paper adopts the nonlinear describing function (DF) method to conduct the accurate stability analysis of PV generators with consideration of P&O-based power control. The detailed procedures about the DF method are introduced, and then the related influence factors like perturbation size, filters, and so on are analyzed quantitatively. Furthermore, the comparison with the conventional stability analysis methods is made, which suggests that the DF method can effectively enhance the accuracy of the stability analysis. All the conclusions are verified by the real-time hardware-in-loop tests.
ISSN: 0278-0046
DOI: 10.1109/TIE.2018.2864695
Rights: © 2018 IEEE. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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