Research Article | OPEN ACCESS
Design and Implementation of a Power Converter to Process Renewable Energy for Step-down Voltage Applications
Chih-Lung Shen and Yu-Sheng Shen
Department of Electronic Engineering, National Kaohsiung First University of
Science and Technology, Yanchao, Kaohsiung 824, Taiwan
Research Journal of Applied Sciences, Engineering and Technology 2014 13:2714-2723
Received: September 09, 2013 | Accepted: October 07, 2013 | Published: April 05, 2014
Abstract
In this study a power converter to process renewable energy is proposed, which can not only process solar energy but deal with wind power. The proposed converter is derived from two series modified forwards to step down voltage for charger system or dc distribution application, so as called Modified-Forward Dual-Input Converter (MFDIC). The MFDIC mainly contains an upper Modified Forward (MF), a lower MF, a common output inductor and a DSP-based system controller. The upper and lower MFs can operate individually or simultaneously to accommodate the variation of atmospheric conditions. Since the MFDIC can process renewable power with interleaved operation, the ripple of output current is suppressed significantly and thus better performance is achieved. In the MFDIC only a common output inductor is needed, instead of two separated inductors, so that the volume of the converter is reduced significantly. To draw maximum power from PV panel and wind turbine, perturb-and-observe method is adopted to achieve the feature of Maximum Power Point Tracking (MPPT). The MFDIC is constructed, designed, analyzed, simulated and tested. Simulations and practical measurements have demonstrated the validity and the feasibility of the proposed dual-input converter.
Keywords:
Modified forward converter, solar energy, step-down voltage, wind power,
References
-
Cacciato, M., A. Consoli, N. Aiello, R. Attanasio, F. Gennaro and G. Macina, 2008. A digitally controlled double stage soft-switching converter for grid-connected photovoltaic applications. Proceedings of the 23rd Annual IEEE Applied Power Electronics Specialists Conference, pp: 141-147.
CrossRef
-
Chen, Y.M., Y.C. Liu and F.Y. Wu, 2002. Multi-input dc/dc converter based on the multiwinding transformer for renewable energy applications. IEEE T. Ind. Appl., 38(4): 1096-1104.
CrossRef
-
Chen, Y.M., Y.C. Liu, S.C. Hung and C.S. Cheng, 2007. Multi-input inverter for grid-connected hybrid PV/wind power system. IEEE T. Power Electron., 22(3): 1070-1077.
CrossRef
-
Fang, Y. and X. Ma, 2010. A novel PV microinverter with coupled inductors and double-boost topology. IEEE T. Power Electron., 25(12): 3139-3147.
CrossRef
-
Gules, R., J.D.P. Pacheco, H.L. Hey and J. Imhoff, 2008. A maximum power point tracking system with parallel connection for PV stand-alone applications. IEEE T. Ind. Electron., 55: 2674-2683.
CrossRef
-
Lohmeier, C., J.W. Zeng, Q. Wei, L. Qu and J. Hudgins, 2011. A current-sensorless MPPT quasi-double-boost converter for PV systems. Proceedings of the IEEE Power Electronics Specialists Conference, pp: 1069-1075.
CrossRef
-
Sedaghati, F. and E. Babaei, 2011. Double input z-source dc-dc converter. Proceedings of the IEEE Power Electronics Specialists Conference, pp: 581-586.
CrossRef
-
Shen, C.L. and J.S. Chau, 2012. Grid-connection half-bridge PV inverter system for power flow controlling and active power filtering. Int. J. Photoenergy, Article ID 760791, 2012: 8.
-
Solero, L., F. Caricchi, F. Crescimbini, O. Honorati and F. Mezzetti, 1996. Performance of a 10 kW power electronic interface for combined wind/PV isolated generating systems. Proceedings of the IEEE Power Electronics Specialists Conference, pp: 1027-1032.
CrossRef
-
Ullah, N.R. and T. Thiringer, 2007. Variable speed wind turbines for power system stability enhancement. IEEE T. Energy Conver., 22: 52-60.
CrossRef
-
Vazquez, M.J.V., J.M.A. Marquez and F.S. Manzano, 2008. A methodology for optimizing stand-alone PV-system size using parallel-connected dc/dc converters. IEEE T. Ind. Electron., 55: 2664-2673.
CrossRef
-
Wai, R.J. and W.H. Wang, 2008. High-performance stand-alone photovoltaic generation system. IEEE T. Ind. Electron., 55: 240-250.
CrossRef
-
Yazdani, A. and R. Iravani, 2006. A neutral-point clamped converter system for direct-drive variable-speed wind power unit. IEEE T. Energy Conver., 21: 596-607.
CrossRef
Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
|
|
![](http://www.maxwellsci.com/images/RJASET-maxw.jpg) |
ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
![Submit Manuscript](../images/sub.jpg) |
Information |
|
|
|
Sales & Services |
|
|
|