Improved Transformer-Based Full-Bridge Inverter

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
  
© 2014 by IJETT Journal
Volume-9 Number-8                          
Year of Publication : 2014
Authors : M.Karuppiah , M.Saniyasirao , K.Karthikumar
  10.14445/22315381/IJETT-V9P272

Citation 

M.Karuppiah , M.Saniyasirao , K.Karthikumar. "Improved Transformer-Based Full-Bridge Inverter", International Journal of Engineering Trends and Technology (IJETT), V9(8),369-374 March 2014. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

Abstract

The paper presents a improved transformer-based full-bridge inverte. A capacitive full-bridge circuit is added to provide instant current under non-linear load condition and thereby reducing the harmonics significantly even under non-linear load condition. The redundant capacity, cost, size and weight of line frequency transformer can therefore be dramatically reduced. Moreover, a new integrated controller for inverter control is proposed to eliminate both DC current component and steady state error even under heavy load condition. The proposed integrated controller consists of a Fuzzy logic controller acts as voltage controller, DC offset canceller, an RMS compensator and non-linear load compensator. The results derived from a DSP-based inverter system and model was simulated using MATLAB/ SIMULINK software.Also the waveforms of voltage, current, harmonics, DC offset voltage are obtained.

References

[1] K. S. Low, “A digital control technique for a single-phase PWM inverter,” IEEE Trans. Ind. Electron., vol. 45, no. 4, pp. 672–674, Aug. 1998.
[2] N. M. Abdel-Rahim and J. E. Quaicoe, “Analysis and design of a multiple feedback loop control strategy for single-phase voltage-source UPS inverters,” IEEE Trans. Power Electron., vol.11, no. 4, pp. 532-541, Jul. 1996.
[3] A. Von Jouanne, P. N. Enjeti and D. J. Lucas, “DSP control of high-power UPS systems feeding nonlinear loads,” IEEE Trans. Ind. Electron., vol. 43, no.1, pp. 121-125, Feb. 1996.
[4] M. Ciobotaru, R. Teodorescu, and F. Blaabjerg, “Control of single-stage single-phase PV inverter,” in Power Electron. And Applicat., 2005 European Conf., pp. , 2005.
[5] F. L. Tofoli, J. C. Schonell, C. A. Gallo, and S. M. R. Sanhueza, “A low cost single-phase grid-connected photovoltaic system with reduced complexity,” in Power Electronics Conference, Brazilian, pp. 1033-1038, 2009.
[6] F. L. Tofoli, J. C. Schonell, C. A. Gallo, and S. M. R. Sanhueza, “A low cost single-phase grid-connected photovoltaic system with reduced complexity,” in Power Electronics Conference, Brazilian, pp. 1033-1038, 2009.
[7] G. Buticchi, D. Barater, E. Lorenzani, and G. Franceschini, “Digital control of actual grid-connected converters for ground leakage current reduction in PV transformerless systems,” IEEE Trans. Ind. Inf., vol 8, no. 3, Aug 2012.
[8] S.H.E. Abdel Aleem, A.F. Zobaa and M.M. Abdel Aziz, “Optimal C-type passive filter based on minimization of the voltage harmonic distortion for nonlinear loads,” IEEE Trans. Ind. Electron., vol. 59, no. 1, pp. 281-289, Jan. 2012.
[9] H. Pinheiro, F. Botteron, J. R. Pinheiro, H. L. Hey, and H. A. Grundling, “A digital controller for single-phase UPS inverters to reduce the output DC component,” in Proc. IEEE PESC, vol. 1, pp. 1311–1314, 2004.
[10] N. M. Abdel-Rahim and J. E. Quaicoe, “Analysis and design of a multiple feedback loop control strategy for single-phase voltage-source UPS inverters,” IEEE Trans. Power Electron., vol.11, no. 4, pp. 532-541, Jul. 1996.

Keywords
Inverter, Line frequency transformer, Voltage harmonics, Fuzzy Logic Controller, Voltage Controller, DC Offset Canceller, RMS Compensator, Non Linear Load Compensator.