A novel control strategy for input-parallel-output-series inverter system

Author

Song, Chunwei ; Zhao, Rongxiang ; Lin, Wangqing ; Zeng, Zheng

Author_Institution

Dept. of Electr. Eng., Zhejiang Univ., Hangzhou, China

fYear

2011

fDate

20-23 Aug. 2011

Firstpage

1

Lastpage

5

Abstract

This paper presents the topology structure and control method for input-parallel-output-series (IPOS) inverter system which is suitable for high input current, high output voltage and high power applications. In order to ensure the normal operation of IPOS inverter system, the control method should achieve input current sharing (ICS) and output voltage sharing (OVS) among constituent modules. Through the analysis in this paper, input current sharing is automatically achieved as long as output voltage sharing is controlled. IPOS inverter system is controlled by three-loop control which is composed of outer common output voltage loop, inner current loops and voltage sharing loops. Simulation results show that this control strategy can achieve low total harmonic distortion (THD) in the system output voltage, fast dynamic response and good output voltage sharing performance.

Keywords

dynamic response; electric current control; harmonic distortion; invertors; voltage control; ICS control; IPOS inverter system; OVS control; THD; dynamic response; inner current loop control; input current sharing control; input-parallel-output-series inverter system; outer common output voltage sharing loop control; three-loop control; topology structure; total harmonic distortion; Control systems; Inductors; Inverters; Power transformer insulation; Topology; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2011 International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4577-1044-5

Type

conf

DOI

10.1109/ICEMS.2011.6073787

Filename

6073787