Modeling and Parameter Design of Voltage-Controlled Inverters Based on Discrete Control

Ningbo Dong, Huan Yang, Junfei Han and Rongxiang Zhao
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Ningbo Dong: College of Electrical Engineering, Zhejiang University, No. 38 Zheda Road, Hangzhou 310027, China
Huan Yang: College of Electrical Engineering, Zhejiang University, No. 38 Zheda Road, Hangzhou 310027, China
Junfei Han: Inner Mongolia Power (Group) Co., Ltd., No. 28 South Xilin Road, Hohhot 010000, China
Rongxiang Zhao: College of Electrical Engineering, Zhejiang University, No. 38 Zheda Road, Hangzhou 310027, China

Energies, 2018, vol. 11, issue 8, 1-22

Abstract: Grid-connected inverters are widely used to interface renewable energy and energy storage resources into the grid. Voltage-controlled inverters have attracted more and more attention due to their grid-friendly characteristics. The mathematical models of the voltage and current loops are developed in this paper, considering especially the discrete control delay caused by calculation and modulation. In order to suppress the resonance peak in the current loop, the frequency characteristics of the current loop are analyzed in detail. The optimum design flow of the current controller and voltage controller parameters are presented based on numerical analysis, and the stability, dynamic performance and the resonance peak suppression in voltage loop are also considered. Finally, the validity of the mathematical model and the effectiveness of the controller parameters design method are verified by simulation and experimental results.

Keywords: voltage-controlled inverter; discrete control; parameter design; optimal design (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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