Development of a Resonant Auxiliary Power Supply Control Algorithm and Resonant Destruction Detecting for Railway Vehicles

An-Yeol Ko, Seong-Yun Kang, Il-Kuen Won, Junsin Yi and Chung-Yuen Won ()
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An-Yeol Ko: Department of Electrical and Computer Engineering, Sungkyunkwna University, Suwon 16419, Korea
Seong-Yun Kang: Dawonsys, Ansan 15655, Korea
Il-Kuen Won: LG Electronics Gasan R&D Campus, Seoul 08592, Korea
Junsin Yi: Department of Electrical and Computer Engineering, Sungkyunkwna University, Suwon 16419, Korea
Chung-Yuen Won: Department of Electrical and Computer Engineering, Sungkyunkwna University, Suwon 16419, Korea

Energies, 2022, vol. 15, issue 21, 1-21

Abstract: In this paper, the method and a control algorithm for detecting resonant destruction of a resonant auxiliary power supply for railway vehicle are proposed. It is essential to reduce the weight of the electric equipment attached to the lower part of the railway vehicle because it greatly affects the life of the railway vehicle, such as wheel and bearing. In order to reduce the weight and volume of the auxiliary power supply, in the case of windings, high-speed switching should be performed by lowering the input voltage. Therefore, in this paper, the auxiliary power supply control algorithm using an LLC resonant converter to reduce the weight of auxiliary power supply for railway vehicle is proposed, and the method of detecting resonant destruction due to device failure of a resonant converter is proposed. The proposed algorithm steps down the wire voltage using an input buck converter for high-speed switching, and the inverter input voltage is controlled through the LLC resonant converter. In addition, ZVS (Zero Voltage Switching) is operated to minimize the loss of the resonant converter, and the optimal design of the resonant tank is also proposed. In order to detect resonant destruction, a detection method formulated by analyzing the resonant current peak value for the load capacity is proposed. The algorithm proposed in this paper is verified by simulation and experiment.

Keywords: railway vehicle; auxiliary power supply; LLC resonant converter; resonant destruction detecting (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: 2022
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