Abstract
Due to the complex power flow under hybrid drive mode in the power-split hybrid electric vehicles with planetary gear set as the dynamic coupling device, it is difficult to develop the control strategy and meanwhile a great amount of calculation required by the optimal control strategy makes its application to real vehicle not available. In this paper, according to the comprehensive analysis about the efficiency of the engine, battery, motor/generator (MG) and planetary gear set, the relation between the charging/discharging power of the battery and the fuel consumption and the impact of the braking energy to the system efficiency, the systematic efficiency model is represented and the research of the objective and constraint function of the instantaneous systematic efficiency optimization is made. Afterward, based on the approximate model of Radial Basis Function neural network the model of the comprehensive systematic efficiency optimization is improved and control strategy of the instantaneous systematic efficiency optimization is simulated. The results indicate the characteristics of the hybrid drive system and provide technical references for the domestic development of the in-depth power-split hybrid electric vehicles.
| Original language | English |
|---|---|
| Pages (from-to) | 35-43 |
| Number of pages | 9 |
| Journal | Journal of Beijing Institute of Technology (English Edition) |
| Volume | 20 |
| Issue number | SUPPL.2 |
| Publication status | Published - Dec 2011 |
Keywords
- Approximate model
- Control strategy
- Hybrid drive
- Systematic efficiency