Implementation of Closed Loop System for Diode Clamped Multilevel Inverter with Stand-Alone Photovoltaic Input

Implementation of Closed Loop System for Diode Clamped Multilevel Inverter with Stand-Alone Photovoltaic Input

ramani kannan BE.,ME.,Ph.D

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Mr. Venus.V

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Dr.K.Ramani

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Anna University, Chennai

Implementation of Closed Loop System for Diode Clamped Multilevel Inverter with Stand-Alone Photovoltaic Input

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Abstract

Multilevel inverter is as one of the most recent and popular type of advances in power electronics. It synthesizes desired output voltage waveform from several dc sources used as input for the multilevel inverter. This paper describes a diode-clamped five-level inverter-based battery/super capacitor direct integration scheme for photovoltaic energy systems. The study is carried out for three cases. In the first case, one of the two dc-link capacitors of the inverter is replaced by a battery bank and the other by a super capacitor bank. In the second case, dc-link capacitors are replaced by two battery banks. In the third case, ordinary dc-link capacitors are replaced by two super capacitor banks. The first system is supposed to mitigate both long-term and short-term power fluctuations while the last two systems are intended for smoothening long-term and short-term power fluctuations, respectively. These topologies eliminate the need for interfacing dc-dc converters and thus considerably improve the overall system efficiency. The major issue in aforementioned systems is the unavoidable imbalance in dc-link voltages. An analysis on the effects of unbalance and a space vector modulation method, which can produce undistorted current even in the presence of such unbalances, are presented in this paper. Simulation work is done using the MATLAB software which validates the proposed method and finally THD comparison is presented for analysis.

References

15 Cites in Article

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

ramani kannan. 2013. \u201cImplementation of Closed Loop System for Diode Clamped Multilevel Inverter with Stand-Alone Photovoltaic Input\u201d. Global Journal of Research in Engineering - F: Electrical & Electronic GJRE-F Volume 13 (GJRE Volume 13 Issue F3): .

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GJRE Volume 13 Issue F3
Pg. 17- 23

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Journal Specifications

Crossref Journal DOI 10.17406/gjre

Print ISSN 0975-5861

e-ISSN 2249-4596

Keywords

diode-clamped five-level inverter direct integration of battery energy storage systems space vector modulation unbalanced operation of diode-clampe

Submission ReceivedDecember 11, 2012
Peer Review Double Blind
Handling Editor
Accepted January 3, 2013
Published January 15, 2013

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March 11, 2013

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Total Score: 107

Country: Unknown

Subject: Global Journal of Research in Engineering - F: Electrical & Electronic

Authors: Mr. Venus.V, Dr.K.Ramani (PhD/Dr. count: 1)

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Total Downloads: 2556

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