摘  要：波浪能是一种新型的清洁能源，近几年提出了多种对波浪能进行开发的方案，但大多都是在波浪能和发电机之间加入转化装置，这样效率低，成本较高。该文提出了永磁圆筒型直线发电机可以将波浪能直接转化为电能。详细阐述了该发电机的结构，并且基于电磁场有限元分析软件Ansoft对于发电机进行仿真，得到空载电压的波形。通过改变永磁体长度对发电机进行优化设计，最后给出优化后发电机的三相空载电压波形和负载特性。仿真结果可以指导磁体结构的圆筒型直线发电机的理论研究。
关键词：波浪能；永磁圆筒型发电机；Ansoft；优化设计

Abstract: Wave energy is a new clean energy.In recent years, several approaches to extract wave energy have been presented, however most of them with low efficiency and high cost with joining mechanical conversion device between the waves and the electromagnetic generator.A permanent magnet (PM tubular linear generator was proposed to produce electric energy directly based on the sea waves energy.The structure of the generator was expatiated in detail, and the waveform of the no-load voltage was obtained by finite element software Ansoft.Optimized design of the generator was obtained by changing the length of PMs.Finally, three-phase no-load voltage waveform and the load characteristics of the generator were offered.The simulation results can be used for theoretical study of permanent magnet tubular linear generator (PMTLG).
Key words: wave energy; PMTLG; ansoft; optimized design