Modeling and Control of a Power-Split Hybrid Vehicle
Jinming Liu; Huei Peng
Control Systems Technology, IEEE Transactions on
Volume 16, Issue 6, Nov. 2008 Page(s):1242 - 1251
Digital Object Identifier   10.1109/TCST.2008.919447
Summary:Toyota hybrid system (THS) is used in the current best selling hybrid vehicle on the market-the Toyota Prius. This hybrid system contains a power-split planetary gear system which combines the benefits of series and parallel hybrid vehicles. In this paper, we developed a dynamic model of the THS powertrain and then apply it for model-based control development. Two control algorithms are introduced: one based on the stochastic dynamic programming method, and the other based on the equivalent consumption minimization strategy. Both approaches determine the engine power based on the overall vehicle efficiency and apply the electrical machines to optimize the engine operation. The performance of these two algorithms is assessed by comparing against the dynamic programming results, which are non-causal but provide theoretical benchmarks for other implementable control algorithms.

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