A Robust Circuit and Controller Parameters Identification Method of Grid-Connected Voltage Source Converters Using Vector Fitting Algorithm
| Autor: | Raymundo E. Torres-Olguin, Weihua Zhou, Mehdi Karbalaye Zadeh, Fredrik Gothner, Zhe Chen, Yanbo Wang, Jef Beerten |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Polynomial
Computer science Noise (signal processing) vector fitting algorithm voltage source converter Energy Engineering and Power Technology polynomial transfer function Impedance Phase locked loops Converters Transfer function Current measurement Power conversion Phase-locked loop Impedance frequency responses Control theory parameters identification Transfer functions Voltage source Current control Electrical and Electronic Engineering Electrical impedance Algorithm |
| Zdroj: | Zhou, W, E. Torres-Olguin, R, Goethner, F, Beerten, J, Karbalaye Zadeh, M, Wang, Y & Chen, Z 2022, ' A Robust Circuit and Controller Parameters Identification Method of Grid-Connected Voltage Source Converters Using Vector Fitting Algorithm ', I E E E Journal of Emerging and Selected Topics in Power Electronics, vol. 10, no. 3, pp. 2748-2763 . https://doi.org/10.1109/JESTPE.2021.3059568 IEEE Journal of Emerging and Selected Topics in Power Electronics |
| Popis: | This article presents a vector fitting (VF) algorithmbased robust circuit and controller parameters identification method for grid-connected voltage source converters (VSCs). The dq-domain impedance frequency responses (IFRs) of the VSCs are first measured using frequency scanning method, based on which the corresponding measured phasor-domain IFRs are calculated. Then, polynomial transfer functions are generated by applying the VF algorithm on the measured phasor-domain IFRs, from which the circuit and controller parameters, i.e., LCL filter parameters, digital sampling time, current controller parameters, and phase-locked loop parameters, are identified. Influence of measurement noise on parameters identification accuracy and corresponding countermeasure to mitigate the adverse influence are also theoretically investigated. The proposed method is able to identify the circuit and controller parameters, when detailed parameters are missing due to industrial secrecy or parameters variation caused by operating condition change, temperature fluctuation, or aging. Effectiveness of the proposed circuit and controller parameters identification method is validated by theoretical demonstration, OPAL-RT-based real-time simulation, and experimental validation. Index Terms—Impedance frequency responses, parameters identification, polynomial transfer function, vector fitting algorithm, voltage source converter. |
| Databáze: | OpenAIRE |
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