The Research on Characteristics of Electronic Power Transformer for Distribution System

Author

Wang, Dan ; Mao, Chengxiong ; Lu, Jiming ; Fan, Shu ; Chen, Luonan

Author_Institution

Dept. of Electr. Eng., Huazhong Univ. of Sci. & Technol., Hubei

fYear

2005

fDate

2005

Firstpage

1

Lastpage

5

Abstract

The 3-phase and 4-wire distribution electronic power transformer (D-EPT) is composed of the input three phase PWM rectifier, medium frequency transformer and output single phase inverters. In this paper, the operation principle of D-EPT is analyzed and its control scheme is designed. For the PWM rectifier, an outer loop control of the DC voltage and an inner loop control of AC current are adopted. Then, a dual-loop control is implemented for the output inverters based on the RMS value and instantaneous value of output voltage respectively. The simulation results show that D-EPT has good steady-state and dynamic load characteristics under the proposed control scheme

Keywords

PWM rectifiers; distribution networks; electric current control; invertors; power system control; power transformers; voltage control; AC current control; DC voltage control; RMS value; control scheme; distribution electronic power transformer; dual-loop control; dynamic load characteristics; instantaneous voltage value; medium frequency transformer; single phase inverters; steady-state characteristics; three phase PWM rectifier; Frequency conversion; Power electronics; Power system harmonics; Power systems; Power transformers; Pulse width modulation; Pulse width modulation inverters; Rectifiers; Steady-state; Voltage control; 3-phase and 4-wire; FACTSIXload characteristic; distribution system; electronic power transformer;

fLanguage

English

Publisher

ieee

Conference_Titel

Transmission and Distribution Conference and Exhibition: Asia and Pacific, 2005 IEEE/PES

Conference_Location

Dalian

Print_ISBN

0-7803-9114-4

Type

conf

DOI

10.1109/TDC.2005.1546802

Filename

1546802