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Energies 2017, 10(10), 1569; https://doi.org/10.3390/en10101569

A Stable and Fast-Transient Performance Switched-Mode Power Amplifier for a Power Hardware in the Loop (PHIL) System

1
School of Electrical Engineering, Wuhan University, Wuhan 430072, China
2
State Grid Anhui Economic Research Institute, Hefei 230022, China
*
Author to whom correspondence should be addressed.
Received: 21 July 2017 / Revised: 24 September 2017 / Accepted: 27 September 2017 / Published: 11 October 2017

Abstract

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. View Full-Text
Keywords: power hardware-in-the-loop; power amplifier; compound controller; dynamic performance power hardware-in-the-loop; power amplifier; compound controller; dynamic performance
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Sun, J.; Yin, C.; Gong, J.; Chen, Y.; Liao, Z.; Zha, X. A Stable and Fast-Transient Performance Switched-Mode Power Amplifier for a Power Hardware in the Loop (PHIL) System. Energies 2017, 10, 1569.

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