This paper proposes a dual-stator switched reluctance generator (DSSRG) which can be applied to underwater power generation. DSSRG is connected with the propeller. When the propeller deflects, it can drive the generator to deflect for underwater power generation and improve the conversion efficiency of the motor. Firstly, taking the underwater propeller as the research object, the pressure and torque characteristics of the propeller at different deflection angles are studied by using CFX software. Then, the structure of DSSRG is modelled and analysed, and the voltage and current characteristics of DSSRG at different speeds and deflection angles are analysed. Finally, an underwater generator prototype is established to verify the rationality of the underwater DSSRG and the feasibility and stability of the power generation system.
The Deflectable double-stator Switched Reluctance Generator (DSRG) has the advantages of simple structure, small volume and multi-dimensional operation. The DSRG and propeller are combined into the application of underwater power generation. With the help of the deflect ability of the generator, the efficiency is improved. Due to the uncertainty of ocean current direction and the structure of switched reluctance generator, the torque ripple is one of the important factors damaging the underwater generator. In order to effectively suppress the influence of torque ripple caused by generator operation, a method of adding pole shoes on the pole side of outer stator is proposed, so as to reduce the torque ripple. The propulsion structure running at different deflection angles is simulated. The torque and speed obtained before and after pole shoe optimization are input into the propeller model. The pressure and speed characteristics of the corresponding blade structure are simulated to verify the effect of optimization and the effectiveness of the power generation system.
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