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Modified flower pollination algorithm for optimizing FOPID controller and its application with the programmable n-level inverter using fuzzy logic

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Abstract

Ann-level multilevel inverter for PV connected systems is proposed in this paper. The proposed inverter is the combination of a buck–boost converter and an H-bridge inverter (B2H multilevel inverter). This system produces a constant AC output voltage with multilevels for a PV connected system with few number of switches. With the proposed inverter, the constant output voltage level is obtained from the PV system irrespective of the variable irradiance. Any number of levels is achieved by varying the duty cycle of the buck–boost converter over a wide range using an n-level generation algorithm. Thus, many numbers of levels can be attained in the output voltage which reduces the THD significantly. The voltage regulation process is performed by designing an optimized fractional-order proportional integral and derivative (FOPID) controller. The FOPID controller provides improved voltage regulation characteristics through the optimization of parameters of controller with the use of modified flower pollination algorithm. The proposed configuration is designed and implemented in MATLAB Simulink. The quality of output, their harmonics and the output resolution time are evaluated for various input voltages and for various numbers of output levels.

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Authors and Affiliations

  1. Department of Electrical and Electronics Engineering, PTR College of Engineering and Technology, Madurai, Tamil Nadu, India

    Chidambaram Rajeswari

  2. Department of Electrical and Electronics Engineering, Solamalai College of Engineering, Madurai, Tamil Nadu, India

    M. Santhi

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  1. Chidambaram Rajeswari
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  2. M. Santhi
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Correspondence to Chidambaram Rajeswari.

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Rajeswari, C., Santhi, M. Modified flower pollination algorithm for optimizing FOPID controller and its application with the programmable n-level inverter using fuzzy logic. Soft Comput 25, 2615–2633 (2021). https://doi.org/10.1007/s00500-020-05305-9

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