Design and Implementation of Interval Type-2 Fuzzy Maximum Power Point Tracking Controllers for Wind Energy Conversion Systems

• Main Authors: Chun-Chien Chang, 張駿謙
• Other Authors: Ching-Chih Tsai
• Format: Others
• Language: en_US
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/93069823028887486774

碩士 === 國立中興大學 === 電機工程學系所 === 102 === This thesis develops two PI-like interval type-2 (IT2) fuzzy maximum power point tracking (MPPT) controllers for two wind energy conversion systems with DC-DC boost or buck converters. After the brief model descriptions of the wind power turbine, power generation system and digital control system, the proposed IT2 fuzzy PI-like MPPT controller for the wind energy boost system is first designed by combining the DC-DC boost converter. Furthermore, the proposed IT2 fuzzy PI-like MPPT controller for the wind energy buck system is then synthesized using the DC-DC buck converter. The asymptotical stabilities of both proposed controllers are investigated in detail. The effectiveness and merits of the proposed MPPT controllers are exemplified by conducting several simulations via Matlab/Simulink; the proposed controller is shown superior by comparing to a conventional PI MPPT controller and a PI-like type-1 fuzzy MPPT controller. Experimental results are conducted to demonstrate the applicability of the proposed control methods.