Design aspects of a square-wave Series Voltage Compensator

Design aspects of a square-wave Series Voltage Compensator

Among several solutions for the voltage sag problem, the Series Voltage Compensator (SVC) stands out. This device injects a compensating voltage at the moment the sag occurs, recovering the voltage supplied to the protected load. The injected voltage is usually produced by a PWM inverter in series w...

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Hauptverfasser: Pires, I. A., de J C Filho, Braz, Silva, S. M.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Capacitors
Energy storage
Power quality
Rectifiers
Static VAr compensators
Topology
Voltage fluctuations
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Silva, S. M.
description Among several solutions for the voltage sag problem, the Series Voltage Compensator (SVC) stands out. This device injects a compensating voltage at the moment the sag occurs, recovering the voltage supplied to the protected load. The injected voltage is usually produced by a PWM inverter in series with a LC filter, producing a sinusoidal compensating voltage (Sinusoidal SVC). Instead of using sinusoidal voltage waveforms, the authors claim that line frequency square-wave compensating voltages yield more cost effective solutions. For instance, in a square-wave SVC, the LC filters and high switching frequency losses are eliminated. This paper presents several square-wave SVC topologies, including a cost comparison between sinusoidal and square-wave solutions. It is demonstrated that the square-wave SVC is more cost effective than the sinusoidal one.
doi_str_mv 10.1109/ECCE.2011.6064348
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subjects Capacitors
Energy storage
Power quality
Rectifiers
Static VAr compensators
Topology
Voltage fluctuations
title Design aspects of a square-wave Series Voltage Compensator
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