Paper Info
Title
A 10-Kv/400-V 500-Kva Electronic Power Transformer
Abstract
This paper presents the design and development of a three-phase 10-kV/400-V 500-kVA electronic power transformer (EPT). The power circuit is designed in a modular fashion, i.e., the main circuit consists of many identical ac-dc-dc-ac modules (abbreviated as power modules). Each power module consists of a high-voltage power cell, a low-voltage power cell (LVPC), a medium-frequency isolation transformer, and a filter. The corresponding control and protection system is developed. A special three-stage startup strategy is designed to shorten the startup time and reduce the startup inrush current. The negative-sequence current compensation is introduced in the input stage to handle the unbalanced loads. To keep the dc-link voltages balanced, an individual dc voltage balancing controller based on regulating the output power of each parallel LVPC is proposed. The detailed control hardware design and software implementation are discussed. The functions of this 10-kV EPT prototype are verified through the laboratory and field tests. The results are shown in this paper. Currently, the prototype is operating in the industrial power grid.
Year
DOI
Venue
2016
10.1109/TIE.2016.2586440
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
Keywords
Field
DocType
Distribution system, industrial prototype, electronic power transformer (EPT), smart grid, solid-state transformer (SST)
Power engineering,Current transformer,Distribution transformer,Power factor,Control engineering,Electronic engineering,Power module,Engineering,Electrical engineering,Switched-mode power supply,Power rating,Isolation transformer
Journal
Volume
Issue
ISSN
63
11
0278-0046
Citations 
PageRank 
References 
1
0.35
9
Authors
7
Name
Order
Citations
PageRank
Dan Wang113.05
Jie Tian211.36
Chengxiong Mao31911.90
Jiming Lu4126.69
Yuping Duan57914.78
Jun Qiu621.40
Huihong Cai710.35