Title :
Control of zero-sequence current in parallel connected voltage source PWM rectifiers using converter-flux-based control
Author :
Pöllänen, Riku ; Tarkiainen, Antti ; Niemelä, Markku ; Pyrhonen, Juha
Author_Institution :
Lappeenranta Univ. of Technol.
Abstract :
A new zero vector selection strategy for the converter flux based control (CFC) of voltage source PWM rectifiers is introduced. With this strategy the circulating current in paralleled rectifiers is effectively suppressed and independent operations of the individual converter units are achieved. In addition to normal line filter, no additional passive components such as transformers or current sharing reactors are required to parallel the converters. Simulation and experimental results validate the developed model and the proposed zero vector selection scheme
Keywords :
PWM rectifiers; electric current control; magnetic flux; power convertors; circulating current; converter-flux-based control; normal line filter; paralleled rectifiers; voltage source PWM rectifiers; zero vector selection strategy; zero-sequence current; Control systems; Current measurement; Passive filters; Pulse width modulation; Pulse width modulation converters; Rectifiers; Switches; Switching converters; Transformers; Voltage control; Converter control; direct power control; modulation strategy; parallel operation;
Conference_Titel :
Power Electronics and Applications, 2005 European Conference on
Conference_Location :
Dresden
Print_ISBN :
90-75815-09-3
DOI :
10.1109/EPE.2005.219437
