International Journal of Engineering Research in Electrical and Electronic Engineering(IJEREEE)

Monthly Journal for Electrical and Electronic Engineering

International Journal of Engineering Research in Electrical and Electronic Engineering

Volume3 ,November 2016.

Volume3,November 2016,

Topic : Interfacing Wind Energy to Grid with Load Compensation by Cascaded Hybrid Multilevel Inverters (Chmli)

Authors:Mr. Madhava Rao.J || Mamatha .G.M , Mr. B S Venkatesh Murthy, Dr. Pradeep B Jyoti

Abstract:Variable wind conditions necessitate the use of a variable speed wind turbine (VSWT) with a AC/DC/AC converter scheme in order to harvest the maximum power from the wind and to decouple the synchronous generator voltage and frequency from the grid voltage and frequency. In this paper, a combination of a three phase diode bridge rectifier (DBR) and a modified topology of the cascaded hybrid multilevel inverter (CHMLI) have been considered as an AC/DC/AC converter. A control strategy has been proposed for the CHMLI to achieve the objective of grid interface of a wind power system together with local load compensation. A novel fixed frequency current control method is proposed for the CHMLI based on the level shifted multi carrier PWM for achieving the required control objectives with equal and uniform switching frequency operation for better control and thermal management with the modified CHMLI. The condition of the controller gain is derived to ensure the operation of the CHMLI at the fixed frequency of the carrier. The converter current injected into the distribution grid is controlled in accordance with the wind power availability. In addition, load compensation is performed as an added facility in order to free the source currents being fed from the grid of harmonic distortion, unbalance and a low power factor even though the load may be unbalanced, non-linear and of a poor power factor. The results are validated using MATLAB simulation studies..

Keywords: Wind Energy,wind turbine,generator voltage

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DOI: 01.1617/vol2iss11pid192

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Dr.Krzysztof Chwastek
Associate Professor,
Czestochowa University of Technology, Polland.

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ISSN(Online): 2395-2717

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Thomson Reuters ID : q-6288-2016.
ORCiD Research ID : 0000-0001-9540-6799

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Journal Code : IJEREEE
Electronic ISSN : 2395-2717
Impact Factor : 3.784
Frequency : monthly
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