Analysis of squirrel-cage induction generator start-up supported by reactive power compensator. Issue 2 (18th November 2019)

• Record Type: Journal Article
• Authors: Górski, Dominik Andrzej
• Is Part Of: Compel. Volume 39:Issue 2(2020)
• Page Start: 265
• Page End: 278
• Publication Date: 2019-11-18
• Subjects: Electrical machine -- Electric converters; Electrical engineering -- Data Processing -- Periodicals; Electrical engineering -- Mathematics -- Periodicals; Electrical engineering -- Periodicals; Electronics -- Data Processing -- Periodicals; Electronics -- Mathematics -- Periodicals; 621.3
• DOI: 10.1108/COMPEL-04-2019-0149
• Languages: English
• ISSNs: 0332-1649

Abstract

Abstract : Purpose: The power electronic converter is used for the satisfaction of reactive power demand of induction generator, when grid-tied. This paper aims to present an application of STATCOM to reduce inrush transient caused by the connection of a squirrel-cage induction generator (SCIG) to the grid. Design/methodology/approach: The power generation system consists of an uncontrolled prime mover, a SCIG and a power electronic converter connected to the grid. The three-phase Neutral Point Clamped (NPC) converter works as a STATCOM to satisfy a reactive power demand of the generator. A control scheme of STATCOM uses the x-y reference frame rotating synchronously with grid voltage vector and the p-q instantaneous power theory to calculate q component of grid power. Findings: It is shown that the parallel converter, which works as a reactive power compensator allows decreasing transients during a grid connection of the induction generator. Research limitations/implications: Transients during a grid connection of the induction generator are only partially decreased. Practical implications: It is needed to compensate for the reactive power of a SCIG. The NPC converter works as a STATCOM. The converter partially reduces grid transients during generator connection. The laboratory tests are demonstrated by connection 7.5 kW induction generator to 8 kVA transformer. Originality/value: The paper presents the mitigation of grid transients during connection of induction generator with the power electronic converter working as reactive power compensator.