Charge Balancing Control for an Asymmetric Multilevel Inverter with Multiple Paired-H-Bridges

Abstract:

Cascaded H-Bridge (CHB) multilevel inverter (MLI) is among the most preferred topology in solar PV systems. While traditional asymmetric CHB MLI is easy to achieve higher number of output voltage levels compared to traditional symmetric CHB MLI, charge balancing between the voltage sources remains a challenge for asymmetric CHB MLI. This drawback results in unsteady DC voltage levels due to unbalanced power drawn from each voltage sources. Besides that, in battery powered applications, unbalanced power drawn results in unequal discharged in the batteries. In this paper, an asymmetric CHB MLI topology is proposed which is easier to modularize as for symmetric CHB MLI while maintaining the ease in charge balancing control. The performance of this proposed asymmetric CHB MLI with charge balance control has been evaluated using PSIM software.

• Periodical: Applied Mechanics and Materials (Volume 785)
• Pages: 96-100
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.785.96
• Online since: August 2015
• Authors: Yee Chyan Tan*, Syed Idris Syed Hassan, Siok Lan Ong, Jenn Hwai Leong
• Keywords: Cascaded H-Bridge, Charge Balancing, Multilevel Inverter, Photovoltaic, Solar Renewable Energy

References

[1] U.S. Energy Information Administration. (2013, July). International Energy Outlook 2013 [Online]. Available: http: /www. eia. gov/forecasts/ieo/pdf/0484(2013). pdf.

[2] D.M.K. Schofield, M.P. Foster and D.A. Stone, Low-cost solar emulator for evaluation of maximum power point tracking methods, Electronic Letters, vol. 47, no. 3, 3rd February (2011).

DOI: 10.1049/el.2010.2930

[3] A.M. Sharaf, and L. Yang, An efficient photovoltaic DC village electricity scheme using a sliding mode controller, Proceedings of the 2005 IEEE Conference on Control Applications, Toronto, Canada, p.1325–1330, August 28-31, (2005).

DOI: 10.1109/cca.2005.1507315

[4] A. Hepbasli, and Z. Alsuhaibani, A key review on present status and future directions of solar energy studies and applications in Saudi Arabia, Renewable and Sustainable Energy Reviews, vol. 15, No. 9, p.5021–5050, (2011).

DOI: 10.1016/j.rser.2011.07.052

[5] C. Alexandru and C. Pozna, Simulation of a dual-axis solar tracker for improving the performance of a photovoltaic panel, Proceedings of the institution of mechanical engineers, Part A: Journal of power and, energy; 2010. p. B210–5.

DOI: 10.1243/09576509jpe871

[6] K. C. Venkatachalam, J. Jerome and J. Karpagam, An experimental investigation on a multilevel inverter for solar energy applications, Electrical Power and Energy Systems 47 (2013) p.157–167.

DOI: 10.1016/j.ijepes.2012.10.025

[7] S. Kuoro, M. Malinowski, K. Gopakumar, J. Pou, L. G. Franquelo, B. Wu, J. Rodriguez, M. A. Perez, and J. I. Leon, Recent advances and industrial applications of multilevel converters, IEEE Transactions on Industrial Electronics, vol. 57, no. 8, p.2553–2580, Aug. (2010).

DOI: 10.1109/tie.2010.2049719

[8] A. Nordvall, Multilevel inverter topology survey, Master of Science Thesis in Power Electric Engineering, (2011).

[9] M. Sandhu and T. Thakur, Multilevel inverters: literature survey – topologies, control techniques & applications of renewable energy sources – grid integration, Int. Journal of Engineering Research and Applications, vol. 4, issue 3, p.644–652, Mar. (2014).

[10] J. Rodriguez, et al., Multilevel converters: an enabling technology for high power applications, Proceedings of the IEEE, vol. 97, no. 11, p.1786–1817, Nov. (2009).

[11] B. Kalinowski and G. Anders, A new look at component maintenance practices and their effect on customer, station and system reliability, Electric Power Energy Syst 2006; 28(10): 679–95.

DOI: 10.1016/j.ijepes.2006.03.023

[12] P. Wheeler, L. Empiringham and D. Gerry, Improved output waveform quality for multi-level H-bridge chain converters using unequal cell voltages, International Conference on Power Electronics and Variable Speed Drives, 2000, p.536–540.

DOI: 10.1049/cp:20000304

[13] M. R. Banaei and E. Salary, Asymmetric Cascaded Multi-level Inverter: A Solution to Obtain High Number of Voltage Levels, J Electr Eng Technol Vol. 8, No. 2: 316–325, (2013).

DOI: 10.5370/jeet.2013.8.2.316

[14] C. C. Chan, Zheng Ming Zhao, C. Qian, and S. Meng, Comparisons of PWM and One-Cycle Control for Power Amplifier With Multilevel Converter, Letters to the Editor, IEEE Transactions On Industrial Electronics, Vol. 49, No. 6, December (2002).

DOI: 10.1109/tie.2002.804988

[15] F. L. Luo, Investigation on best switching angles to obtain lowest THD for multilevel DC/AC inverters, IEEE Conf. Industrial Electronics and Applications, (2013).

DOI: 10.1109/iciea.2013.6566663

[16] T. M. Blooming and D. J. Carnovale, Application of IEEE STD 519–1992 Harmonic Limits, IEEE IAS Pulp And Paper Industry Conference, Appleton, WI. (2005).

DOI: 10.1109/papcon.2006.1673767