This paper presents an efficient and reliable Genetic Algorithm based solution for Selective Harmonic Elimination (SHE) switching pattern. This method eliminates considerable amount of lower order line voltage harmonics in Pulse Width Modulation (PWM) inverter. Determination of pulse pattern for the elimination of some lower order harmonics of a PWM inverter necessitates solving a system of nonlinear transcendental equations. Genetic Algorithm is used to solve nonlinear transcendental equations for PWM-SHE. Many methods are available to eliminate the higher order harmonics and it can be easily removed. But the greatest challenge is to eliminate the lower order harmonics and this is successfully achieved using Genetic Algorithm without using Dual transformer. Simulations using MATLABTM and Powersim with experimental results are carried out to validate the solution. The experimental results show that the harmonics up to 13th were totally eliminated.
Wagner, V. E., “Effect of harmonics on equipment,” IEEE Trans. Power Delivery, 1993, Vol. 8, no. 2, pp. 672–680.
Joachim Holtz, “Pulse width modulation - A Survey”, IEEE Trans. Industrial Electron-ices, 1992, Vol.39, No. 5, pp.410-420.
Jian Sun, Horst Grotsotollen, “Solving Nonlinear equations for Selective harmonic eliminated PWM using Predicted Initial values”, IEEE Conf. Proc. IECON'92, 1992, pp. 259-264.
Shi, K.L., and Hui Li ,“Optimized PWM strategy based on genetic algorithms”, IEEE Trans. Industrial Electronics, 2005, Vol.52, No. 5, pp.1458-1461.
B. Justus rabi, “Minimization of harmonics in PWM Inverter Based in Genetic Algorithms”, Journal of Applied Sciences, 2006, Vol.9, No. 9, pp.2056-2059.
Maswood, A.I., Wei, S., and Rahman, M.A., “A flexible way to generate PWM-SHE switching pattern using genetic algorithm”, IEEE Applied Power Electronics (APEC) Conf. Proc., Anheim, californiea, USA, 2001, Vol.2, pp 1130-1134.
Sun, J., Beineke, S., Grotsllen, H., “DSP based Real-time harmonic elimination of PWM Inverters” IEEE Power Electronics Specialists Conference PESC,1994, Taipei, Taiwan. Vol. 2, pp. 679-685.
Maswood, A.I., and Wei, S., “Genetic algorithm based solution in PWM converter switching”, IEE Proc. Elect. Power Appl., 2005, Vol.152, No.3, pp. 473-478.
Shen, W., and Maswood, A.I., “A novel current source PWM drive topology with specific harmonic elimination switching”, Proc. Canadian Conf. on Electrical and computer Engineering (CCECE), Halifax, Canada, 2000, No. 12, pp.53-55.
Sundareswaran, K., and Mullangi chanda, “Evolutionary Approach for Line Current harmonic Reduction in AC/DC converters”, IEEE Trans. Industrial Electronics, 2002, Vol.49, No. 3, pp. 716-719.
Sayyah, A., Aflaki, M., and Rezazade, A.R., “Optimization of THD and Suppressing Certain Order Harmonics in PWM inverters using Genetic Algorithms”, Proc. of IEEE International Symposium on Intelligent Control, Munich, Germany, 2006, pp 874-879.