针对主流永磁同步发电机存在成本高和有刷双馈感应发电机存在可靠性低的问题,结合风电发展的要求,提出一种具有功率密度高和可靠性高的新型永磁/笼障混合转子双定子风力发电机应用于海上风力发电。功率密度与电机的功率分配、极槽配合和转子耦合能力有关。基于该发电机的工作原理和设计要求,设计一台300 kW永磁/笼障混合转子双定子风力发电机,并考虑功率分配、主要尺寸确定方法、极槽配合和转子耦合能力。在此基础上,采用数值法分析不同运行状态下该发电机性能,并与实验测试结果作比较;同时将所提出的发电机与常规电机在转矩密度和成本方面作比较,验证该发电机设计和分析方法的合理性和有效性及转矩密度高的特点。
Abstract
Aiming at mainstream the problems of the permanent magnet synchronous generator with the high cost and the brush doubly-fed induction generator with the low reliability, combined with the requirements for the development of wind power generation, a new type of permanent magnet/cage-barrier mixed rotor dual-stator wind power generator with high power density and high reliability is proposed to apply in offshore wind power generation. The power density is related to the key parameters of electric machine, including the power distribution, pole-slot combinations and rotor coupling capability. According to the working principle and design requirements of the electric machine, a 300 kW dual-stator wind power generator with permanent-magnet/cage-barrier mixed rotor （PMCBMR-DSWPG） is designed, with the power distribution, main size determination method, slot-pole combinations and rotor couple capability considered. On this basis, the numerical method is used to analyze and discuss the performance parameters of the PMCBMR-DSWPG under the different operationg conditions, and compares it with experimental test results. At the same trme, the torque density and cost of the proposed PMCBMR-DSWPG is compared with that of the conventional electric machiney. From the results, it verifies the rationality and effectiveness of the design and analysis method in the PMCBMR-DSWPG. Meanwhile, it also proves that the proposed PMCBMR-DSWPG has the advantage of high torque density.
关键词
风力发电 /
同步发电机 /
优化结构 /
双定子 /
永磁/笼障混合转子 /
电磁设计 /
转矩密度
Key words
wind power /
synchronous generator /
optimize structure /
dual-stator /
permanent-magnet/cage-barrier mixed rotor /
electromagnetic design /
torque density
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基金
河南省高等学校重点科研项目（22A470004）; 教育部高等教育司产学合作协同育人项目（202101125001）; 河南城建学院青年骨干资助项目（G2015008）
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