Analysis design and implementation of 1kw switched reluctance generator for standalone wind energy systems

Abstract

Small power wind energy systems are characterized by low speed. Switched Reluctance Generator (SRG) has become the key focus of research for its usage in wind power generation. Even though papers on the design of Switched Reluctance Generator (SRG) are available in the literature, a comprehensive overview of a selection of appropriate pole configurations from x (6/4, 8/6) and 2x (12/8, 16/8) models and the impact of structural changes in stator and rotor poles with different short pitch winding layouts of SRG have not been investigated much. This research discusses the selection of pole numbers from its conventional pole configurations for a 1 kW Switched Reluctance Generator for wind energy application. Here, the conventional configuration(x) of 3- phase 6/4, 4-phase 8/6 and its multiple (2x) 12/8, 16/12 are chosen for study. The sizing of SRG with all these pole configurations is designed based on Torque per Rotor Volume (TRV) method. In the conventional design split ratio (Dr/Do) and length to bore diameter (L/Dr) was selected according to the pole combinations. In this study a specific value of split ratio and the length to bore diameter is proposed for all the pole configurations to suit the wind velocity 6 m/s. Based on the study, it shows that the necessity of altering the pole embraces and number of turns/phase to maximize the output power when compared to classical design. An initial performance prediction is done through analytical calculations and the detailed electromagnetic analysis was carried out using finite element method. newline