超高速高效率永磁同步发电机的研究_硕士学位论文 精品

Zhang Da Prof. Kou Baoquan Master of Engineering Electrical Enginnering School of Electrical Engineering and Automation June, 2011 Harbin Institute of Technology
Dissertation for the Masteral Degree in Engineering
RESEARCH ON HIGH-SPEED HIGHEFFICIENCY PERMANENT MAGNET SYNCHRONOUS GENERATOR
Candidate： Supervisor： Academic Degree Applied for： Speciality： Affiliation： Date of Defence： Degree-Conferring-Institution：
哈尔滨工业大学工学硕士学位论文
摘
要
高速电机因其具有转速高、体积小、功率密度大等优越性能，正在被广泛 应用于能源、工业、航空航天和医疗等诸多领域，受到了越来越广泛的关注。 本文采用的方法将解析分析和有限元计算相结合，对高速永磁同步发电机的磁 场及损耗进行了分析，研究了电机关键尺寸参数的变化对电机损耗及效率的影 响。 首先，总结了对于电枢开槽影响的分析方法。通过气隙相对磁导函数的引 入来表示开槽的影响，将其与光滑电枢表面下的磁场相结合，解析分析了电机 的空载气隙磁场。通过有限元法对定子铁心磁场进行了分析，包括定子齿部和 轭部磁场。将电枢绕组等效为面电流层，对电枢反应磁场进行了解析。 其次，在磁场解析的基础上，对高速永磁同步发电机的损耗进行了计算。 基于Bertotti分离铁耗模型，计算了定子铁耗。考虑直流损耗和涡流损耗，计算 了定子铜耗。在对比分析几种转子涡流损耗计算方法的基础上，计算了转子涡 流损耗。考虑高转速时空气摩擦损耗，计算了转子风摩耗。 然后，对高速永磁同步发电机的设计方法进行了研究。基于效率最优的原 则，对电机最佳裂比进行了分析，同时还对转子长径比进行了优化分析。 最后，在理论分析的基础上，对高速永磁同步发电机样机进行了实验研 究，实验结果与仿真结果基本吻合。 关键词：高速永磁同步发电机；磁场解析；损耗；优化；裂比
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工学硕士学位论文
超高速高效率永磁同步发电机的研究
硕 士 研 究 生： 张达 导 师： 寇宝泉教授
申 请 学 位： 工学硕士 学 科： 电气工程
所 在 单 位： 电气工程及自动化学院 答 辩 日 期： 2011 年 6 月 授予学位单位： 哈尔滨工业大学
Classified Index: TM351 U.D.C: 621.3
I
哈尔滨工业大学工学硕士学位论文
Abstract
High speed motor is used more and more widely in the field of energy, industrial, aerospace and medical because of its superiority of high speed, small size and high power density.So high speed motor has received wider and wider attention. Based on the combination approach of analysis method and finite element method (FEM), this paper analyzes the magnetic field distribution and the loss of the highspeed permanent magnet synchronous generator, and researches the effect of the critical dimensions of the motor parameters on the motor losses and efficiency. First,we summarize the methods of analyzing the stator slotting.Through the introduction of air gap relative permeability function,we can combins it to the the magnetic field distribution under the armature with the smooth surface.Then,we can receive the no-load air-gap magnetic field.Through the finite element method we can analyze the magnetic field of stator core magnetic field, including the stator teeth and yoke.We equivalence armature winding to the surface current layer and the magnetic field of armature reaction were resolved. Second, on the basis of the magnetic field the loss of high-speed permanent magnet synchronous generator is calculated. Based on the Bertotti model of iron loss, the stator iron loss is calculated. Considering the current losses and eddy current losses, the stator copper loss is calculated. In the comparative analysis of several rotor eddy current loss calculation method, the rotor eddy current loss is calculated. Considering air friction losses, the rotor wind abrasion is calculated. Then, the design methods of high-speed permanent magnet synchronous generator were studied. Based on the principle of optimal efficiency, the best split ratio of the motor was analyzed. Also, the ratio of the length to diameter was optimized. Finally, based on the theoretical analysis, the experiment is done and the experimental results agree with the simulation ones. Keywords: High-speed permanent magnet synchronous generator, magnetic field analysis, loss, optimization, split ratio
硕士学位论文
超高速高效率永磁同步发电机的研究
RESEARCH ON HIGH-SPEED HIGHEFFICIENCY PERMANENT MAGNET SYNCHRONOUS GENERATOR
张达
哈尔滨工业大学 2011 年 6 月
国内图书分类号：TM351 国际图书分类号：621.3
学校代码：10213 密级：公开