Park vector based sliding mode control of UPS with unbalanced and nonlinear load

Péter Korondi, Hideki Hashimoto

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In this paper an inverter is taken as a member of Variable Structure System (VSS). A new Park vector based variable structure control (VSC) method is proposed. A modified definition of the Park vector is introduced to handle the effect of zero phase-sequence component caused by an asymmetrical load. The design of a sliding mode controller consists of two main steps. Firstly, the design of the sliding surface, secondly, the design of the control which holds the system trajectory on the sliding surface. A complex sliding surface is proposed. The inverter is switched in such a way that the system trajectory gets as close to the sliding surface as possible. This paper focuses on the switching rule. Experimental results of a 100 KVA inverter are presented.

Original languageEnglish
Pages (from-to)65-79
Number of pages15
JournalPeriodica Polytechnica Electrical Engineering
Volume43
Issue number1
Publication statusPublished - 1999

Keywords

  • Park vector
  • Sliding mode
  • UPS
  • Unbalanced load

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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