含电机绕组的电动汽车Z源一体化充电机研究初探

发布时间：2018-04-17 16:23

本文选题：电动汽车 + 一体化充电机　；参考：《哈尔滨工业大学》2015年硕士论文

【摘要】：电动汽车充电时其电驱动系统是不工作的,在不增加或少增加元器件的基础上将电驱动系统接至电网,利用电驱动系统的功率变换器构成可控整流充电单元,同时利用电机绕组构成滤波电感或隔离变压器单元,共同构成一体化充电机。对于电动汽车控制系统,Z源变流器可以克服传统变流器的不足,构成单级直流母线电压可调变流器,本文在Z源变流器的基础上对一体化充电机进行初步研究。本文首先介绍Z源充电机的拓扑结构,详细分析其工作原理及控制结构,对Z源充电机直通时间的两种分配方式进行对比分析。为了使系统能够实现单位功率因数充电,本文推导了Z源电容电压的取值范围并根据实验参数给出算例。其次,在Z源变流器基础上本文针对电机绕组的集成方式进行研究,为了使转子在充电时保持静止,提出了两种非隔离型绕组集成方式,并进行对比分析和仿真验证。对于隔离型一体化充电机,本文对其工作原理和应用前提进行分析研究,根据建立的数学模型给出适用于电池充电的控制方法,再通过仿真进行系统验证。再次,本文对Z源充电机整体进行系统设计,搭建实验平台,并对硬件电路和软件控制程序进行详细说明。然后对电阻负载和电池负载进行充电以验证Z源充电机系统可行性,并对Z源充电机系统进行性能测试,分析电池充电电流纹波较大的原因,提出改进方向。最后,本文将对Z源一体化充电机进行总结和展望,提出自己对于Z源一体化充电机研究方向的思路。
[Abstract]:The electric drive system of an electric vehicle does not work when charging. The electric drive system is connected to the power network on the basis of no additional or little additional components, and the controllable rectifier charging unit is constructed by using the power converter of the electric drive system.At the same time, the motor windings are used to form filter inductors or isolating transformer units to form an integrated charger.For the electric vehicle control system, the Z-source converter can overcome the shortcomings of the traditional converter and form a single-stage DC bus voltage adjustable converter. This paper makes a preliminary study on the integrated charging machine based on the Z-source converter.In this paper, the topology structure of Z source charger is introduced, its working principle and control structure are analyzed in detail, and the two ways of distributing through time of Z source charger are compared and analyzed.In order to realize unit power factor charging, the range of Z source capacitance voltage is deduced and an example is given according to the experimental parameters.Secondly, on the basis of Z-source converter, this paper studies the integrated mode of motor winding. In order to keep the rotor at rest while charging, two kinds of non-isolated integrated winding are proposed, and compared with each other and verified by simulation.In this paper, the working principle and application premise of the isolated integrative charger are analyzed and studied. According to the established mathematical model, the control method suitable for battery charging is given, and then the simulation is carried out to verify the system.Thirdly, the whole system of Z source charger is designed, the experimental platform is built, and the hardware circuit and software control program are described in detail.Then the resistance load and battery load are charged to verify the feasibility of the Z source charger system. The performance of the Z source charger system is tested. The reason for the large ripple of the battery charging current is analyzed and the improvement direction is put forward.Finally, this paper summarizes and prospects the Z source integrated charger, and puts forward the research direction of the Z source integrated charger.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U469.72;TM910.6

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