Research On The Electric Drive Test System Of Pure Electric Vehicle

With the rapid increase of car ownership, excessive dependence on petroleumresources,seriously restricts the development of economy in our country. At the same time,vehicle emissions caused by air pollution problem is increasingly serious. Electric car hasthe advantages of alternative fuel vehicles, reduce exhaust emissions. To advocate andencourage research and development. The use of environmental protection and energysaving of new energy cars, represents the direction of the world auto industry development,also accord with national conditions of our country. During the "tenth five-year plan ofscience and technology to the electric car as a major projects of" national high and newtechnology development plan ", advocate and encourage research and development, the useof environmental protection and energy saving of new energy cars. Pure electric vehicleelectric test system in pure electric vehicle research plays an important role In this paper, westudy and design of the pure electric vehicle electric test system test platform, to achieve theexpected design goal.Pure electric vehicle electric test system using virtual instrument technology,simulation technology and single-chip microcomputer control technology. The mainresearch contents of the paper for pure electric vehicle electric test system platform,Designed the basic detection circuit, the hardware circuit of data acquisition card and PCinterface programming,Implementation of pure electric vehicles electric motor drive testsystem performance testing. Simulation of the actual electric car simple operation condition,signal controller processing, running status monitoring. Test platform of the core technologyis that a variety of detection circuit design. PC for data processing, the design of dataacquisition card and PC communication, system through data acquisition card will becollected various signal detection circuit and sensor signals are transmitted to the controller.It is used to control electric drive system. at the same time. Using LabVIEW programmingPC control interface. It also will receive all at the same time from all related signal dataacquisition card, so that all states of the real-time display test platform and data, afterprocessing the signal controller, show area, according to the working condition of signaltransmitted to have the effect of working condition of simulation, which have the effect ofmonitoring, driven by motor running at the same time. In this system. Using eddy currentbrake are given. When the motor is reverse. Dynamometer acted as a continuous dynamic load. As a result of the dynamometer work will produce a lot of heat, you need to cooling ofdynamometer. This system adopts the cold water pump in the cooling way for cooling.The experimental results show that the pure electric vehicle electric test systemresearch. It has a guiding significance on the research of the electric car parts, and by virtualinstrument technology. It can be a quick and efficient to develop modular, intelligent, highlevel of integration of pure electric vehicle electric test system. Implement variousparameters on the electric drive system test and has better control precision. The subject ofthe research on the development of the electric car research has the very good guidancesignificance.