Title :
Redundant parallel operation of current regulated inverters
Author :
Yan Xing ; Lipei, Huang ; Yangguang, Yan
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
A novel control for redundant parallel inverters with instantaneous current sharing is proposed. Current sharing based upon current regulation is realized through the share bus connecting all the paralleled modules without extra control modules. The share bus consists of only three automatically averaged signals (no matter how many modules in parallel): voltage reference, current reference and feedback voltage. The parallel system operating without extra current deviation control loop is modeled into an equivalent transfer function for the original inverter. As a result, both fast dynamic response and equal load current sharing capability are attained under linear or nonlinear load. System configuration and operation principle are presented. Simulation and experiment results are given in detail.
Keywords :
dynamic response; electric current control; feedback; invertors; transfer functions; 3 kVA; automatically averaged signals; current reference; current regulated inverters; equal load current sharing capability; equivalent transfer function; extra current deviation control loop; fast dynamic response; feedback voltage; linear load; nonlinear load; parallel system; paralleled modules connection; redundant parallel operation; voltage reference; Automatic control; Circuits; Control systems; Current control; Filters; Inverters; Master-slave; Regulators; Transfer functions; Voltage control;
Conference_Titel :
TENCON '02. Proceedings. 2002 IEEE Region 10 Conference on Computers, Communications, Control and Power Engineering
Print_ISBN :
0-7803-7490-8
DOI :
10.1109/TENCON.2002.1182728
