High-Voltage Isolated Multiple Output Auxiliary Power Supply with Output Voltage Self-Regulation

Yu Ai, Yunming Shi, Shaoyong Chen, Zehui Zhang, Shuai Zhao and Jianqiang Liu
Additional contact information
Yu Ai: Institute of Power Electronics and Electric Traction, School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
Yunming Shi: Institute of Power Electronics and Electric Traction, School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
Shaoyong Chen: Institute of Power Electronics and Electric Traction, School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
Zehui Zhang: Institute of Power Electronics and Electric Traction, School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
Shuai Zhao: Institute of Power Electronics and Electric Traction, School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
Jianqiang Liu: Institute of Power Electronics and Electric Traction, School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China

Energies, 2022, vol. 15, issue 6, 1-18

Abstract: Power electronic transformers (PETs) have high voltage isolation requirements and a large number of modules, which requires the auxiliary power supply (APS) to achieve high voltage isolation and multiple outputs. This paper proposes a parameter optimization method for the current source APS applied to PETs, enabling the APS to have multiple output voltage self-regulation capabilities. By optimizing the excitation inductance and leakage inductance for the current transformer of the APS, the excitation current plays a regulating role in energy transmission, thus realizing the self-regulation of the output voltages. The proposed method enables the voltage deviation and voltage change of the output modules to be suppressed under the unbalanced loads and large load fluctuations. Moreover, the APS can still operate normally when a short-circuit or an open-circuit fault occurs on the output sides. Therefore, the stability and reliability of the APS are improved, and the design difficulty of the post-stage voltage regulator circuit is also reduced. Finally, the simulation results are given, and a prototype containing three output modules was built to verify the effectiveness of the proposed parameter optimization method.

Keywords: auxiliary power supply (APS); output voltage self-regulation; current transformers; current source topology; high-voltage isolation; multiple outputs (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
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/15/6/2106/pdf (application/pdf)
https://www.mdpi.com/1996-1073/15/6/2106/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:15:y:2022:i:6:p:2106-:d:770372

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().