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A new type of STATCOM based on cascading voltage-source inverters with phase-shifted unipolar SPWM
Journal article   Peer reviewed

A new type of STATCOM based on cascading voltage-source inverters with phase-shifted unipolar SPWM

Yiqiao Liang and C.O Nwankpa
IEEE transactions on industry applications, v 35(5), pp 1118-1123
Sep 1999

Abstract

Automatic voltage control Bridge circuits Capacitors Inductors Inverters Phase modulation Pulse modulation Space vector pulse width modulation STATCOM Voltage control
In this paper, a new type of static compensator (STATCOM) is proposed. This new STATCOM is constructed by cascading several identical full-bridge (H bridge) voltage-source inverters (VSIs). A so-called phase-shifted sinusoidal pulsewidth modulation (SPWM) unipolar voltage switching scheme is applied to control the switching devices of each VSI. The harmonics in STATCOM current caused by the DC voltage ripple is rejected by a new method developed in this paper. As a result, the size of inductor and DC capacitors can be further reduced. A very effective startup procedure is proposed to start up the STATCOM. The proposed STATCOM has the advantage of a fewer number of VSIs, the VSIs being identical and extremely fast in response to reactive power change.

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#7 Affordable and Clean Energy

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Collaboration types
Industry collaboration
Domestic collaboration
Web of Science research areas
Engineering, Electrical & Electronic
Engineering, Multidisciplinary
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