A Single Switch Hybrid Step-up Converter with high voltage gain, which is suitable for renewable energy system, is proposed in this paper. The proposed converter consists of one switched diode-inductor cell and a capacitor. While switching, both are charged in parallel from the input source and discharged in series to the output. In order to obtain extra voltage gain at lower duty cycle, the voltage multiplier cell is integrated with the proposed converter. The main advantages of the converter are high voltage gain, reduced voltage stress, simple structure and low output voltage ripples. The operating principle and steady state theoretical analysis are presented. A 250 W prototype converter is implemented with 12 V input and 120 V output to verify the design and analysis of this converter and it has an efficiency of over 90% in all operations.
KeywordsDC-DC Power ConversionSwitched-InductorStep-Up ConverterVoltage Multiplier
Ramakumar, R. and Bigger, J.E. (1993) Photovoltaic systems. Proceedings of the IEEE, 81, 365-377. http://doi.org/10.1109/5.241491
Carrasco, J.M., Franquelo, L.G., Bialasiewicz, J.T., Galvan, E., PortilloGuisado, R.C., Prats, M.A.M., Leon, J.I. and Moreno-Alfonso, N. (2006) Power-Electronic Systems for the Grid Integration of Renewable Energy Sources: A Survey. IEEE Transactions on Industrial Electronics, 53, 1002-1016. http://doi.org/10.1109/TIE.2006.878356
Yang, L.-S., Liang, T.-J. and Chen, J.-F. (2009) Transformerless DC-DC Converters with High Step-Up Voltage Gain. IEEE Transactions on Industrial Electronics, 56, 3144-3152. http://doi.org/10.1109/TIE.2009.2022512
Li, W., Fan, L., Zhao, Y., He, X., Xu, D. and Wu, B. (2012) High-Step-Up and High-Efficiency Fuel-Cell Power-Generation System With Active-Clamp Flyback-Forward Converter. IEEE Transactions on Industrial Electronics, 59, 599-610. http://doi.org/10.1109/TIE.2011.2130499
Lee, S., Kim, P. and Choi, S. (2013) High Step-Up Soft-Switched Converters Using Voltage Multiplier Cells. IEEE Transactions on Power Electronics, 28, 3379-3387. http://doi.org/10.1109/TPEL.2012.2227508
Fu, J., Zhang, B., Qiu, D. and Xiao, W. (2014) A Novel Single-Switch Cascaded DC-DC Converter of Boost and Buck-Boost Converters. 16th European Conference on Power Electronics and Applications, Lappeenranta, 26-28 August 2014, 1-9. http://doi.org/10.1109/EPE.2014.6910723
Liang, T.-J., Liang, H.-H., Chen, S.-M., Chen, J.-F. and Yang, L.-S. (2014) Analysis, Design, and Implementation of a Bidirectional Double-Boost DC-DC Converter. IEEE Transactions on Industry Applications, 50, 3955-3962. http://doi.org/10.1109/TIA.2014.2315504
Park, K.-B., Moon, G.-W. and Youn, M.-J. (2011) Nonisolated High Step-Up Stacked Converter Based on Boost-Integrated Isolated Converter. IEEE Transactions on Power Electronics, 26, 577-587. http://doi.org/10.1109/TPEL.2010.2066578
Muller, L. and Kimball, J.W. (2014) Effects of Stray Inductance on Hard-Switched Switched Capacitor Converters. IEEE Transactions on Power Electronics, 29, 6276-6280. http://doi.org/10.1109/TPEL.2014.2332815
Wu, G., Ruan, X. and Ye, Z. (2015) Nonisolated High Step-Up DC-DC Converters Adopting Switched-Capacitor Cell. IEEE Transactions on Industrial Electronics, 62, 383-393. http://doi.org/10.1109/TIE.2014.2327000
Tang, Y., Fu, D., Wang, T. and Xu, Z. (2015) Hybrid Switched-Inductor Converters for High Step-Up Conversion. IEEE Transactions on Industrial Electronics, 62, 1480-1490. http://doi.org/10.1109/TIE.2014.2364797
Zhang, X., Jiang, L., Deng, J., Li, S. and Chen, Z. (2014) Analysis and Design of a New Soft-Switching Boost Converter with a Coupled Inductor. IEEE Transactions on Power Electronics, 29, 4270-4277. http://doi.org/10.1109/TPEL.2013.2285708.
Hsieh, Y.-P., Chen, J.-F., Yang, L.-S., Wu, C.-Y. and Liu, W.-S. (2014) High-Conversion-Ratio Bidirectional DC-DC Converter with Coupled Inductor. IEEE Transactions on Industrial Electronics, 61, 210-222. http://doi.org/10.1109/TIE.2013.2244541
Liu, H.-C. and Li, F. (2015) Novel High Step-Up DC-DC Converter with an Active Coupled-Inductor Network for a Sustainable Energy System. IEEE Transactions on Power Electronics, 30, 6476-6482. http://doi.org/10.1109/TPEL.2015.2429651
Hsieh, Y.-P., Chen, J.-F., Liang, T.-J. and Yang, L.-S. (2012) Novel High Step-Up DC-DC Converter with Coupled-Inductor and Switched-Capacitor Techniques. IEEE Transactions on Industrial Electronics, 59, 998-1007. http://doi.org/10.1109/TIE.2011.2151828
Berkovich, Y., Beck, Y. and Axelrod, B. (2015) High Step-Up DC-DC Converter Based on the Switched-Coupled-Inductor Boost Converter and Diode-Capacitor Multiplier: Steady State and Dynamics. IET Power Electronics, 8, 1420-1428. http://doi.org/10.1049/iet-pel.2014.0785
Chen, S.-M., Lao, M.-L., Hsieh, Y.-H., Liang, T.-J. and Chen, K.-H. (2015) A Novel Switched-Coupled-Inductor DC-DC Step-Up Converter and Its Derivatives. IEEE Transactions on Industry Applications, 51, 309-314. http://doi.org/10.1109/TIA.2014.2332642
Ajami, A., Ardi, H. and Farakhor, A. (2015) A Novel High Step-Up DC/DC Converter Based on Integrating Coupled Inductor and Switched-Capacitor Techniques for Renewable Energy Applications. IEEE Transactions on Power Electronics, 30, 4255-4263. http://doi.org/10.1109/TPEL.2014.2360495
Prudente, M., Pfitscher, L.L., Emmendoerfer, G., Romaneli, E.F. and Gules, R. (2008) Voltage Multiplier Cells Applied to Non-Isolated DC-DC Converters. IEEE Transactions on Power Electronics, 23, 871-887. http://doi.org/10.1109/TPEL.2007.915762
Li, W., Zhao, Y., Deng, Y. and He, X. (2010) Interleaved Converter with Voltage Multiplier Cell for High Step-Up and High-Efficiency Conversion. IEEE Transactions on Power Electronics, 25, 2397-2408. http://doi.org/10.1109/TPEL.2010.2048340
Wu, B., Li, S., Liu, Y. and Ma Smedley, K. (2016) A New Hybrid Boosting Converter for Renewable Energy Applications. IEEE Transactions on Power Electronics, 31, 1203-1215. http://doi.org/10.1109/TPEL.2015.2420994
Axelrod, B., Berkovich, Y. and Ioinovici, A. (2008) Switched-Capacitor/Switched-Inductor Structures for Getting Transformerless Hybrid DC-DC PWM Converters. IEE Transactions on Circuits and Systems I: Regular Papers, 55, 687-696. http://doi.org/10.1109/TCSI.2008.916403
Hu, Y., Li, K., Yin, Z. and Ioinovici, A. (2015) Switched-Inductor-Based Non-Isolated Large Conversion Ratio, Low Components Count DC-DC Regulators. IEEE Energy Conversion Congress and Exposition (ECCE), Montreal, 20-24 September 2015, 1398-1405. http://doi.org/10.1109/ECCE.2015.7309856