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Power Hardware in the Loop (PHIL) systems are used to test a power system with the help of combined software and hardware. Generally, to construct a PHIL system, a switched-mode power amplifier that has a stable performance is used, because of their large, linear signal control-to-output characteristics. However, the fundamental limitations of a switch-mode power amplifier (PA) are the dynamic performance and output bandwidth. In this paper, a compound controller has been used for the rectifier part of a PA, which can ensure the stability of a PA under transient or fault operating conditions. Moreover, a compound controller, which involves a feed-forward controller, a proportional controller and a repetitive controller, is proposed in the inverter part of a PA, and it can be used for PHIL applications. Experimental results are obtained under various operating conditions, such as transient responses under load step change, and output voltage bandwidth testing for a PHIL system, it is concluded that a proposed switched-mode power amplifier is useful for the PHIL system.
Jianjun Sun; Chenxu Yin; Jinwu Gong; Yewei Chen; Zhiqiang Liao; XiaoMing Zha. A Stable and Fast-Transient Performance Switched-Mode Power Amplifier for a Power Hardware in the Loop (PHIL) System. Energies 2017, 10, 1569 .
AMA StyleJianjun Sun, Chenxu Yin, Jinwu Gong, Yewei Chen, Zhiqiang Liao, XiaoMing Zha. A Stable and Fast-Transient Performance Switched-Mode Power Amplifier for a Power Hardware in the Loop (PHIL) System. Energies. 2017; 10 (10):1569.
Chicago/Turabian StyleJianjun Sun; Chenxu Yin; Jinwu Gong; Yewei Chen; Zhiqiang Liao; XiaoMing Zha. 2017. "A Stable and Fast-Transient Performance Switched-Mode Power Amplifier for a Power Hardware in the Loop (PHIL) System." Energies 10, no. 10: 1569.
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.
XiaoMing Zha; Chenxu Yin; Jianjun Sun; Meng Huang; Qionglin Li. Improving the Stability and Accuracy of Power Hardware-in-the-Loop Simulation Using Virtual Impedance Method. Energies 2016, 9, 974 .
AMA StyleXiaoMing Zha, Chenxu Yin, Jianjun Sun, Meng Huang, Qionglin Li. Improving the Stability and Accuracy of Power Hardware-in-the-Loop Simulation Using Virtual Impedance Method. Energies. 2016; 9 (11):974.
Chicago/Turabian StyleXiaoMing Zha; Chenxu Yin; Jianjun Sun; Meng Huang; Qionglin Li. 2016. "Improving the Stability and Accuracy of Power Hardware-in-the-Loop Simulation Using Virtual Impedance Method." Energies 9, no. 11: 974.