Fuzzy Controller for a Voltage-Regulated Solar-Powered MPPT System for Hybrid Power System Applications

Jaw-Kuen Shiau, Yu-Chen Wei and Min-Yi Lee
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Jaw-Kuen Shiau: Department of Aerospace Engineering, Tamkang University, Tamsui, New Taipei City 25137, Taiwan
Yu-Chen Wei: Department of Aerospace Engineering, Tamkang University, Tamsui, New Taipei City 25137, Taiwan
Min-Yi Lee: Department of Aerospace Engineering, Tamkang University, Tamsui, New Taipei City 25137, Taiwan

Energies, 2015, vol. 8, issue 5, 1-21

Abstract: This paper presents the design of a fuzzy-logic-based voltage-regulated solar power maximum power point tracking (MPPT) system for applications involving hybrid power systems. The system contains a solar power system and battery as the primary and secondary power sources, respectively. The solar system alone supplies power to the electric motor and maintains the output voltage at a predetermined level when it has sufficient power. When the solar power is insufficient, the solar system is operated at its maximum power point (MPP) and the battery is engaged to compensate for the insufficiency. First, a variant of the incremental conductance MPP condition was established. Under the MPP condition, the voltage-regulated MPPT system was formulated as a feedback control system, where the MPP condition and voltage regulation requirements were used as the system inputs. Next, a fuzzy controller was developed to perform the voltage-regulated MPPT function for the hybrid power system. A simulation model based on Matrix laboratory (MATLAB)/SIMULINK (a block diagram environment for multi-domain simulation and model-based design) and a piecewise linear electric circuit simulation (PLECS) tool for controlling the dc motor velocity was developed to verify the voltage-regulated solar power MPPT system.

Keywords: maximum power pointing tracking; fuzzy controller; circuit simulation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (9)

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