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Improving the Power Quality by Four Leg VSI

Author(s): 1.Shweta R Malluramath 2. Prof V.M.Chougala

Journal: International Journal of Engineering Trends and Technology
ISSN 2231-5381

Volume: 4;
Issue: 5;
Start page: 2016;
Date: 2013;
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Keywords: power quality (PQ) | Point of common coupling (PCC) | Voltage Source Inverter (VSI).

This paper presents a hysteresis band current control scheme for three-phase four leg voltage source inverter that compensates power quality problems. The inverter is capable of compensating power factor, current unbalance and current harmonics. Today most inverters are designed for balanced three phase loads and consequently the associated control Strategies are quite effective for three wire system but are not able to manage load that require neutral current compensation. If four leg four wire topology is used the controller can be simplified because there is no need to split DC capacitor.

Tango Jona
Tangokurs Rapperswil-Jona

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