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Open AccessArticle

Application of the Feedback Linearization in Maximum Power Point Tracking Control for Hydraulic Wind Turbine

by Chao Ai 1,2, Wei Gao 1,2, Qinyu Hu 1,2, Yankang Zhang 3, Lijuan Chen 3,*, Jiawei Guo 1,2 and Zengrui Han 1,2
1
Hebei Heavy Machinery Fluid Power Transmission and Control Laboratory, Yanshan University, Qinhuangdao 066004, China
2
School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China
3
Nanjing Institute of Technology, Nanjing 211167, China
*
Author to whom correspondence should be addressed.
Energies 2020, 13(6), 1529; https://doi.org/10.3390/en13061529 (registering DOI)
Received: 11 February 2020 / Revised: 5 March 2020 / Accepted: 17 March 2020 / Published: 24 March 2020
(This article belongs to the Collection Wind Turbines)
Taking the hydraulic wind turbine as the research object, the method is studied to improve the utilization ratio of wind energy for hydraulic wind turbine, when the wind speed is lower than the rated wind speed. The hydraulic fixed displacement pump speed and generating power can be used as control output to realize the maximum power point tracking control. The characteristics of the maximum power point tracking control are analyzed for hydraulic wind turbine, and the hydraulic output power is taken as control output based on the comprehensive performance requirements. Because the hydraulic wind turbine is a strong multiplication nonlinear system, the system is globally linearized based the feedback linearization method, and the maximum power point tracking control law is obtained. The simulation and experiment results show that the system has good dynamic performance with the proposed control law. The control provides theoretical guidance for optimal power tracking control law application for hydraulic wind turbine. View Full-Text
Keywords: hydraulic wind turbine; maximum power point tracking control; hydraulic fixed displacement pump; hydraulic variable displacement motor; feedback linearization method hydraulic wind turbine; maximum power point tracking control; hydraulic fixed displacement pump; hydraulic variable displacement motor; feedback linearization method
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MDPI and ACS Style

Ai, C.; Gao, W.; Hu, Q.; Zhang, Y.; Chen, L.; Guo, J.; Han, Z. Application of the Feedback Linearization in Maximum Power Point Tracking Control for Hydraulic Wind Turbine. Energies 2020, 13, 1529.

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