Modelling of Common shaft Multi-generator Horizontal axis Wind turbine for Stability and Efficiency Enhancement
Abstract
A novel wind turbine generator system is introduced, and its mathematical model, stability criterion was tested using a prototype and also by using simulation software for the performance prediction are presented. The notable feature of WTGS is that it consists of two generator systems positioned with multi stage gear box mounted on the common low speed shaft. In this paper, this new wind turbine generator system is treated as a constrained multi-body system, and the system equations, transfer function of this novel turbine and generator architecture are obtained by using differential equations and Laplace transforms approach. The results proved it as beneficial over single generator system, extracting higher wind power by maintaining system in stable state and improved power output along with enhancement of overall efficiency and were observed experimentally and through simulations. Here we successfully designed a prototype model of HAWT with a gross mechanical power output of 645.55W and a raw electrical power of 24W using PMDC generators with the gear box ratio as 1:6.444. Finally, Mat-lab simulation software is used to predict and analyze the performance and stability of the Multi gear box multi generator wind turbine system
References
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