Design And Simulation On The Distributed Power System Of Monorail Vehicle

This study based on the BSR-1 type monorail car developed by Beijing forestry university in recent years, (hereinafter referred to as "monorail car"). There still have some problems that need to be solved before the monorail car being put into use. First, the monorail car is driven by a small gasoline engine to haul the tractor trailer, the traction all focus on the pin tooth on a tractor driver pin wheel. Because the structure size limits the size of traction, the rated load of monorail car cann’t be improved significantly. It is not practical. Secondly, mechanical brakes adopted on monorail car are easy to be broken, and the braking energy cann’t be recycle. So energy loss is bigger. Third, control precision of the monorail cars is poor in the process of start, stop, deceleration, etc. The energy distribution is not reasonable, and the work efficiency is very low. Therefore, this research adopts the distributed motor drive way that energy provided by the diesel generator and battery power.The main research is as follows:1) According to the original data and setting target value,the monorail transportation condition and operation process were analyzed, the running resistance of various working conditions were calculated,and maximum resistance and the required power were obtained.Then the basis of the calculated data for the next whole power system matching scheme was provided.2) According to the theoretical calculation data, the whole distributed power system configuration cheme of vehicle and various component selection were designed..3)According to the requirements of working condition, the driving control system is designed. And the system mainly includes the vehicle controller with the STM32 as the control And it also includes the core, motor drive controller, battery power management system, regenerative braking energy controller, etc. The applicating control strategy is the traditional PID control.4) Using CarSim and Simulink to model and joint simulation analysis for the designed power system. The simulation results showed that the design of the distributed power system has the feasibility. And it can meet the energy requirements of load and braking energy recovery, control accuracy, fuel economy, efficiency and the utilization ratio.