Single-Phase Cascaded Grid Connected Multilevel Inverter for Interfacing Renewable Energy Sources With Microgrid-Reference-Cited by-同舟云学术

Single-Phase Cascaded Grid Connected Multilevel Inverter for Interfacing Renewable Energy Sources With Microgrid

Published:2015-07-07 Issue:5 Volume:137 Page:
ISSN:0199-6231
Container-title:Journal of Solar Energy Engineering
language:en
Short-container-title:

Author:

Gerald Christoper Raj I.¹,Kaliamoorthy M.²,Rajasekaran V.³,Sekar R. M.⁴

Affiliation:

1. Assistant Professor Department of EEE, PSNA College of Engineering and Technology, Dindigul, Tamil Nadu 624622, India e-mail:

2. Professor Department of EEE, Karpagam College of Engineering, Coimbatore, Tamil Nadu 641032, India e-mail:

3. Professor PSNA College of Engineering and Technology, Dindigul, Tamil Nadu 624622, India

4. Assistant Professor Department of EEE, PSNA College of Engineering and Technology, Dindigul, Tamil Nadu 624622, India

Abstract

In this paper, a novel single-phase cascaded grid connected multilevel inverter (MLI) is proposed for feeding power to microgrid from renewable energy sources (RESs). The proposed inverter is capable of feeding power to microgrid with low total harmonic distortion (THD). The proposed inverter consists of two H bridge inverters connected in cascade, namely, upper and lower inverters. The upper inverter is fed from photovoltaic (PV) array through a DC–DC boost converter, whereas the lower inverter is fed from wind turbine (WT) coupled to permanent magnet synchronous generator (PMSG) through an uncontrolled rectifier and DC–DC boost converter. The upper inverter operates at high frequency, whereas the lower inverter operates at fundamental frequency. To extract maximum power from the WT and PV array, a sliding mode control based maximum power point tracker (MPPT) is used. The proposed inverter is connected to the single phase 230 V, 50 Hz grid, and the control algorithm is implemented in the SPARTAN 3A digital signal processor (DSP) board. The proposed inverter is simulated using matlab/simulink, and detailed experimental results are presented to show the efficacy of the proposed inverter under different environmental conditions.

Publisher

ASME International

Subject

Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment

Link

http://asmedigitalcollection.asme.org/solarenergyengineering/article-pdf/doi/10.1115/1.4030886/6327029/sol_137_05_051004.pdf

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