Simulation on ISG hybrid powertrain based on simulink

SUN Guibin1, MA Tengteng2, TANG Youming1, YANG Yundong1,
WANG Yao1, CAO Jinghui1

(1.Xiamen University of Technology School of Mechanical and Automotive Engineering, Xiamen 361024, China;
2.Fujian Collaborative Innovation Center for R & D of Coach and Special Vehicle, Xiamen 361024,China;
3.Fujian FuGong EV Tech Co.,Ltd, Xiamen 361000, China)

Abstract: Aiming at the problems of ISG powertrains structure complexity and control complexity, some lacks such as high risk, long period and high cost in traditional development and so on, the Simulink simulation tool was applied according to rear simulation thought, the energy management strategy was designed and modeled, the input model and the driver PI controlling model were modeled ,the main components such as the driving motor, engine, generator, power battery were modeled combined with relevant theoretical formulas and demarcated test data. Combining with the typical Chinese traffic, the energy management strategy of engine first driving for optimizing engines working efficiency was put forward withing the power distribution. The simulation results turns out that this model can accurately simulate the true bus on the cycle traffic driving and complete the economy simulation and output realtime working characteristic parameters of every parts, it can be the foundation for studying powertrains energy management strategy and optimizing parts parameters, this is useful for confirming the vehicle control strategy in early development period and improving the economy of related matched bus.

Key words: ISG hybrid; power system; city bus; vehicle simulation