Abstract
In this paper, an electric road-rail vehicle and its control system are designed. The electric vehicle equipped a train couplers in front of it is used as a movable electric signal test bench for China Rail High-speed (CRH). Firstly, architecture of the vehicle is introduced. In the powertrain, hydraulic system is designed for the transition from road mode to rail mode, and vice versa. And in both road and rail modes, the vehicle is driven by an induction machine. Secondly, to improve the driving performance and satisfy different driving conditions, particular control strategy for the induction machine is put forward by using a load torque observer based on sliding mode control theory. The load observer based induction machine control system can improve the speed stability and robustness to the unexpected load disturbing. Finally, experiment is done and the results verify that the algorithm works well.
Highlights
Road-rail vehicle [1,2] is used as a train-trailer or for freight transport on rail
Due to the significant advantage of electric vehicle, in this paper, we propose a kind of electric road-rail vehicle which uses both hydraulic system and pure electric drive system
The electric road-rail vehicle is used as a test bed in workshop for automatic test of train couplers electric signals
Summary
According to its different driving requirement, the vehicle should be able to run on the road as well as the rail. Due to the significant advantage of electric vehicle, in this paper, we propose a kind of electric road-rail vehicle which uses both hydraulic system and pure electric drive system. The electric road-rail vehicle is used as a test bed in workshop for automatic test of train couplers electric signals. The architecture and control structure of the road-rail electric vehicle is presented and the control system is designed. The electric driving system and the control strategy is designed. To improve the driving performance, a load torque observer based on sliding mode control is design to realize robust speed control of the induction machine driving system. Simulation is done and the results show good performance of the control method
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