Improving the Stability and Accuracy of Power Hardware-in-the-Loop Simulation Using Virtual Impedance Method

Xiaoming Zha, Chenxu Yin, Jianjun Sun, Meng Huang and Qionglin Li
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Xiaoming Zha: School of Electrical Engineering, Wuhan University, Wuhan 430072, China
Chenxu Yin: School of Electrical Engineering, Wuhan University, Wuhan 430072, China
Jianjun Sun: School of Electrical Engineering, Wuhan University, Wuhan 430072, China
Meng Huang: School of Electrical Engineering, Wuhan University, Wuhan 430072, China
Qionglin Li: State Grid Henan Electric Power Research Institute, Zhengzhou 450000, China

Energies, 2016, vol. 9, issue 11, 1-16

Abstract: Power hardware-in-the-loop (PHIL) systems are advanced, real-time platforms for combined software and hardware testing. Two paramount issues in PHIL simulations are the closed-loop stability and simulation accuracy. This paper presents a virtual impedance (VI) method for PHIL simulations that improves the simulation’s stability and accuracy. Through the establishment of an impedance model for a PHIL simulation circuit, which is composed of a voltage-source converter and a simple network, the stability and accuracy of the PHIL system are analyzed. Then, the proposed VI method is implemented in a digital real-time simulator and used to correct the combined impedance in the impedance model, achieving higher stability and accuracy of the results. The validity of the VI method is verified through the PHIL simulation of two typical PHIL examples.

Keywords: power hardware-in-the-loop; impedance model; stability; accuracy; virtual impedance (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: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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