直线式波浪能发电装置设计

Key technology of linear power generation device driven by wave energy

针对旋转式波浪能发电装置由于存在中间环节转换而导致发电效率降低的问题,围绕直线式波浪能发电装置设计中的关键技术,通过三维建模技术和Ansoft/Maxwell仿真软件,开展了铁芯槽口大小优化、磁铁充磁方式选择、磁铁间隙优化以及铁芯纵向端部效应改善和弥补方法等研究,提出了一种直线式波浪发电装置,对优化后的直线发电机模型进行了电磁瞬态仿真分析,进而得出该发电机的电磁力矩曲线、磁链曲线、以及所产生的感应电动势曲线图,为直线式波浪能发电装置设计提供了理论依据。研究结果表明,该发电机的励磁源选择了钕铁硼永磁材料,具有功率大、性能指标较优越、结构紧凑简洁、噪音低、效率高等显著优势,端部铁芯齿宽度增大可以解决和弥补纵向边端效应的问题。

Aiming at the problem of low efficiency of power generation due to the intermediate link conversion in the rotary wave power plant, focusing on the key technologies in the design of linear wave energy generating devices, using three - dimensional modeling techniques and Ansoft/Maxwell simulation software, optimization of the core slot size, magnet magnetization mode selection, magnet gap and core longitudinal end effect were studied and a linear wave power generation device was proposed. The electromagnetic transient simulation of the optimized linear generator model was carried out and then the electromagnetic torque curve, the flux curve and the induced electromotive force curve of the generator were obtained, which provide a theoretical basis for the design of linear wave energy generating device. The results indicate that NdFeB permanent magnet was chosen as the excitation source of this generator, which has the advantages of high power, good performance index, compact structure, low noise and high efficiency. The increase of the width of end core teeth can solve the problem of longitudinal edge effect.