The Electric Car Motor/generator Control Device Based On Embedded System Technology Research

The development of automobile industry brought us about up a convenient way oftransportation, also promoted world economic and social sustainable development. Butwith the arrival of the21st century, Human beings are facing irreconcilable problemssuch as population swell, resource scarcity, environmental pollution and so on. Thus,fuel consumption, pollution and noise caused by traditional automobiles are becomingmore obvious. That is why countries in the world are devoted to construct a newdevelop model for economy and technology which is green energy-saving. So electriccars emerge at the special moment. Compared with traditional automobiles, electric carsuse electric power as energy resource discarding the need of petrochemical resources;electromotor as the main drive component produces no environmentally harmful tail gasand generates little noise. we can say electric vehicles are the best means to solve theabove dilemmas.Energy saving technology, the core and aporia in electric cars development, hasbeen drawing much attention. Especially, energy recovery technology is got widelyrecognized by auto industry. However its development level is not satisfying. Thetraditional energy recovery technology installs an independent recovery device to thedrive system, which increases system integrity, cost and weight making power density,energy loss and recovery efficiency in low performance.Based on the present situation, this paper proposes a new method usingasynchronous motor as the driver and energy recycling device and researches relatedtechnologies. Integrated motor is utilized as the electric car`s drive motor and energyrecovery generator. The main controller, according to the electric car driving condition,manipulates integrated motor`s working model realizing safe and efficient energyrecovery.Around the integration control technology, this paper, from the view of vehicleassembly control, designs every sub module. The control system plan based on theintegration of technology is devised to expound the relations between integration systemand other sub modules at the system level. Then the control strategy of driver module, energy recovery module and switching module are studied. The innovative idea is thatthe sliding mode variable structure direct torque control technology is applied intodriver module. Afterwards hardware platform is built and control system softwaremodules are also finished. At last theory simulation and experiments are done tovalidate the motor control strategy proposed in this paper.