Study On The Mechanism Of Direct-drive Double Linear Switched Reluctance Generator

Electrical energy is the lifeblood of industrial development.With the rapid development of modern industry in our country,the demand for electrical energy is also increasing day by day.Then there is a problem of excessive energy consumption and serious environmental pollution.The primary energy problem has become a major problem that plagues humans.As a non-polluting renewable energy source,it is of great significance to solve the primary energy shortage and environmental pollution problems.Since the birth of the world’s first wave power generation device,wave power generation technology has developed rapidly.However,how to efficiently use wave energy and improve the power generation efficiency of power generation devices has always been a hot issue in the field of wave power generation technology,in order to effectively improve wave power generation efficiency,scholars at home and abroad have focused their attention on the research of generators.The Double Linear Switched Reluctance Generator(DLSRG)is a direct-drive electromechanical conversion device with the advantages of simple structure,robustness,reliable operation,suitable for harsh environments and easy maintenance,compared to other electromechanical conversions.The device is more suitable for wave power generation and can significantly reduce operating costs.This article focuses on the development of such motors.In this paper,the structure and operating principle of DLSRG are briefly described.The electromechanical conversion mechanism of wave power generation is described in detail,and the equivalent equation of DLSRG is deduced and analyzed.On this basis,the linear model and the nonlinear model of DLSRG are studied respectively.Finally,the method of establishing the nonlinear model based on Maxwell is given.The DLSRG structure parameters were initially obtained using the “analogy method”,and the finite element analysis of the DLSRG was performed using the Ansoft Maxwell 2D finite element analysis software.The influence of the structural parameters on the electromagnetic characteristics of the DLSRG was analyzed,an optimal set of dimensions was selected,magnetic pull,magnetic saturation,coupling,and flux were analyzed to verify the reasonableness of the selected dimensions.Simplorer and Maxwell software were used to conduct a joint simulation experiment,and the influencing factors of power generation were studied,and the optimization of the on/off position was completed.On this basis,the DLSRG power and voltage are further analyzed to verify that the DLSRG studied in this paper has continuous power generation capability and meets the requirements.Applying Solidworks software,the DLSRG virtual prototype was designed,and the power module,control circuit and acquisition circuit were designed.The DLSRG electromechanical integration design was completed.Based on DLSRG’s own characteristics and operating characteristics,the control method of DLSRG is summarized,and the simulation study is conducted.The DLSRG position control method and PID algorithm are combined to form a double closed-loop control strategy to complete the constant voltage control,verifying the feasibility and superiority of the double closed-loop control strategy in the DLSRG power generation system.