电机测功系统开发

发布时间：2018-09-06 20:13

【摘要】：最近几年,新能源汽车已经从行业内热点变为全社会关注的热点。近期召开的国务院常务会议确定加大对新能源汽车产业的支持力度,可见政府对发展新能源汽车的决心,这是该行业的一剂强心针。在这样的大环境下,新能源汽车行业飞速发展着。作为新能源汽车的核心,电机的工作性能很大程度上决定了新能源汽车的性能,所以,电机在测功台架上的测试就显得尤为重要了。实验平台是科学技术研究及产品生产中不可缺少的,同时也是至关重要的一个环节,设备和控制技术的先进性决定了一个实验平台的优劣。从种类上来说,测功机主要有电力测功机、电涡流测功机、水力测功机、磁粉测功机等几种类型。其中电力测功机是比较先进的加载测功设备,在工作性能、安全性等方面都有很大的优势,尤其是在低速工作时仍然加载精确;电力测功机另一个最大的优点是能量回馈功能,它可以将被测电机发出的机械能转化为电能回馈给电网,而不是将这部分机械能转化成热能消耗掉。从这方面来说,电力测功机节约能源,具有很大的经济性,由此来说,设计一套电力测功系统就显得尤为重要了,本课题就是在此背景下提出来的。本文是在实验室现有条件的基础上提供一套切实可行的测功系统的解决方案,首先对完整的系统框架进行了描述,并参考了一些机械设计的通用标准,尽可能地使系统标准化。另外,对于测功机的变频器和控制方式也进行了介绍,说明了直接转矩控制方式的优势;在变频器的远程控制模式中,引入了CANopen网络和ABB Drive通讯协议。文中设计的放电柜只有在母线电压高于开启电压时才工作,目的是防止因测试故障导致母线电压升高损坏电源与控制器,因此,这与传统意义上的放电柜的作用还不是一个概念。最后,本文还在此系统上做了电机的各项性能测试和整车模拟测试,为后期的系统完善奠定了一定的基础。
[Abstract]:In recent years, the new energy vehicle has changed from a hot spot in the industry to a hot spot in the whole society. The recent executive meeting of the State Council decided to step up support for the new energy car industry, indicating the government's determination to develop the new energy car, which is a strong shot in the arm of the industry. In such a big environment, the new energy automobile industry is developing rapidly. As the core of the new energy vehicle, the working performance of the motor largely determines the performance of the new energy vehicle, so the test of the motor on the dynamometer is particularly important. The experimental platform is indispensable in the research of science and technology and the production of products. At the same time, it is also a crucial link. The advancement of equipment and control technology determines the merits and demerits of an experimental platform. There are several types of dynamometer, such as electric dynamometer, eddy current dynamometer, hydraulic dynamometer, magnetic powder dynamometer and so on. Among them, electric dynamometer is a relatively advanced loading dynamometer, which has great advantages in working performance, safety, etc. Especially, it is still loaded accurately at low speed. Another of the biggest advantages of electric dynamometer is its energy feedback function. It can convert the mechanical energy from the motor tested to the power grid instead of converting the mechanical energy into heat energy and consume it. From this aspect, the electric dynamometer saves energy, has the very big economy, therefore, it is very important to design a set of electric power measuring system, this subject is put forward under this background. This paper provides a set of feasible solutions for power measurement system based on the existing conditions in the laboratory. Firstly, the complete system framework is described, and some general standards of mechanical design are referred to standardize the system as much as possible. In addition, the frequency converter and control mode of dynamometer are introduced, the advantages of direct torque control mode are explained, and the CANopen network and ABB Drive communication protocol are introduced in the remote control mode of frequency converter. The discharge cabinet designed in this paper only works when the bus voltage is higher than the open voltage. The purpose of the design is to prevent the busbar voltage from damaging the power supply and controller caused by the test fault. This and the traditional sense of the role of discharge tank is not a concept. Finally, this paper also did the motor performance test and the whole vehicle simulation test on this system, which laid a certain foundation for the later system improvement.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U467

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