International Journal of Management, IT and Engineering
Year : 2014, Volume : 4, Issue : 10
First page : ( 89) Last page : ( 105)
Online ISSN : 2249-0558.

Renewable energy source based DC link VSI for power quality improvement using DSTATCOM

 Rajesh, Sunitha N.S.

EEE Dept, Acharya Institute of Technology, Bangalore

Online published on 29 November, 2014.

Abstract

In this paper DSTATCOM (Distribution Static Compensator) is used to supply the required compensating source current which is one of the power quality issue. The reference current methodology applied here is Instantaneous Symmetrical Component Theory (ISRF). ISRF is proposed for three-phase four-wire which includes voltage source converter and a dc link capacitor. The Source power to Voltage Source Inverter (VSI) is performed with constant DC source. The THD is observed in source current. This is compared with wind energy driven VSI. Thus Results are compared for unbalanced and non-linear load. Critical analysis is performed for THD in source current for unbalanced and non-linear load when source for VSI is constant DC supply and wind energy system. It has been observed that the THD in case of wind system is more than constant DC source to VSI. The THD for two phase load is greater than three phase load. THD is compared without and with compensation. All the simulation are carried out in Matlab/simulink based on the optimum method for controlling DC bus of VSI.

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Index Terms

Constant DC source, Wind energy driven VSI, Instantaneous Symmetrical Component Theory (ISRF), Total Harmonic Distortion, Neutral Current.

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