【作者】 袁永杰；

【导师】 崔淑梅；

【作者基本信息】 哈尔滨工业大学 ， 电机与电器， 2008， 硕士

【摘要】 四端口机电换能器具有两个电气端口和两个机械端口,可以实现无级变速和功率流分配的功能。它首先被用在混合动力车上以取代机械变速箱以实现发动机的高效率工作。分布式发电可以有效地弥补传统的大电网集中供电的缺陷,近些年成为了国内外学者的研究热点。风力发电无污染,可再生,取之不尽用之不竭,是很好的分布式电源。作者将四端口机电换能器用于风力发电,设计了专门用于作布式电源的风力发电系统。它能够使用普通同步发电机发出恒频恒功率交流电,电能质量更好,所使用的变换器功率低于发电机功率。论文在对四端口机电换能器的基本功能分析的基础上,论述了四端口机电换能器在风力发电上的三种作用,分析了由此构成的三种风力发电系统特点。提出了一种基于四端口机电换能器的分布式发电系统结构。分析了四端口机电换能器作为二级变速器和功率分配器在分布式系统中应用的优势。给出了工作原理和设计风轮、增速箱、四端口机电换能器内外电机及同步发电机的参数的方法。提出了以四端口机电换能器为核心的控制策略。对开关磁阻四端口机电换能器进行了电磁设计,并以此进行了有限元仿真,分析了开关磁阻四端口机电换能器内外电机单独工作与联合工作的转矩和电流变化情况;以转矩和电流影响率为目标分析得出了最佳中间转子轭部厚度。分析了开关磁阻四端口机电换能器的磁路结构,得出了内外电机避免磁耦合的原则。以转矩和效率为目标,仿真分析了内电机在各个转速段的最佳开通角和关断角,为控制器的设计提供了参考。更多还原

【Abstract】 A Four-Port Electro Mechanical Energy Convertor (FPEMEC) has two electrical ports and two mechanical ports, and can achieve the function of continuous variable transmission and power flow distribution. In the first place it was used in HEV to replace the mechanical gearbox so as to improve the engine’s work efficiency.Distributed generation can offset the defect caused by traditional large-scale power grid effectively, so it attracted the researchers both domestic and abroad. Wind power is a favorable energy source for its pollution-free, renewable and inexhaustible.The author of this dissertation put the FPEMEC in use of wind generation, and designed a kind of wind power system for distributed power grid. It can make a synchronous machine to generate an AC power with constant frequency and constant power, the power quality is better and the power of matching convertor is lower than the generator.Through the basically analysis of the function of FPEMEC, this paper discussed its three type of function in wind generation, thus analyzed the characteristics of the three wind power systems.A kind of distributed generation system structure based on FPEMEC was proposed, the advantages in application of distributed power system as secondary transmission and power allocator was analyzed, the operation principles and the methods of parameter confirm and design of wind turbine, speed-increasing gearbox and FPEMEC was proposed too, in the last, the control strategy of FPEMEC was brought out.The electromagnetic design of switch reluctance based FPEMEC was put forward, and its FEM simulation was done to analysis the torque and current variable situation when the inner or outer machine operate independently or simultaneously, through the goal analysis of their influence extent, the optimal thickness of interrotor yoke was obtained.The magnetic circuit structure of switch reluctance based FPEMEC was put into analysis too, and the principle of avoid inner and outer magnetic coupling was obtained. Aim to the torque performance and work efficiency, the optimal turn on or off angle in different speed segment of inner machine was analyzed trough simulation, which is beneficial to the design of its controller.更多还原