Control of parallel connected three-phase PWM converters without inter-module reactors

Bassim M.H. Jassim, Bashar Zahawi, David J. Atkinson

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

This paper presents a new current sharing control strategy for parallel-connected, synchronised three-phase DC-AC converters employing space vector pulse width modulation (SVPWM) without current sharing reactors. Unlike conventional control methods, the proposed method breaks the paths of the circulating current by dividing the switching cycle evenly between parallel connected equally rated converters. Accordingly, any inter-module reactors or circulating current control will be redundant, leading to reductions in system costs, size, and control algorithm complexity. Each converter in the new scheme employs a synchronous dq current regulator that uses only local information to attain a desired converter current. A stability analysis of the current controller is included together with a simulation of the converter and load current waveforms. Experimental results from a 2.5kVA test rig are included to verify the proposed control method.

Original languageBritish English
Pages (from-to)116-122
Number of pages7
JournalJournal of Power Electronics
Volume15
Issue number1
DOIs
StatePublished - 2015

Keywords

  • Control of power electronic converters
  • Current control
  • DC-AC power conversion
  • Parallel operation
  • PWM converters

Fingerprint

Dive into the research topics of 'Control of parallel connected three-phase PWM converters without inter-module reactors'. Together they form a unique fingerprint.

Cite this