Title :
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
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;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2011 International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-1044-5
DOI :
10.1109/ICEMS.2011.6073787
