IEEE Transactions on Energy Conversion, Vol.31, No.2, 704-712, 2016
Adaptive Maximum Power Point Tracking Control Algorithm for Wind Energy Conversion Systems
This paper presents an adaptive maximum power point tracking (MPPT) algorithm for small-scale wind energy conversion systems (WECSs) to harvest more energy from turbulent wind. The proposed algorithm combines the computational behavior of hill climb search, tip speed ratio, and power signal feedback control algorithms for its adaptability over wide range of WECSs and fast tracking of maximum power point. In this paper, the proposed MPPT algorithm is implemented by using buckboost featured single-ended primary inductor converter to extract maximum power from full range of wind velocity profile. Evaluation of the proposed algorithm is done on a laboratory-scaled dc motor drive-based WECS emulator. TMS320F28335, 32-bit floating point digital signal controller, is used to execute the control schemes of the in-lab experimental setup. Experimental results show that tracking capability of the proposed algorithm under sudden and gradual fluctuating wind conditions is efficient and effective.
Keywords:Maximum power point tracking;hill climb search algorithm;tip speed ratio algorithm;power signal feedback algorithm;single-ended primary inductor converter (SEPIC) dc-dc converter