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Decomposition-Based Integrated Optimal Electric Powertrain Design
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DOI：10.1109/TVT.2022.3156472.png)
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摘要
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This paper presents a decomposed co-design optimization framework for an electric vehicle powertrain equipped with a Continuously Variable Transmission (CVT). We jointly design the sizes of the powertrain components and the energy management strategy, considering the design and the dynamics of the transmission. Specifically, we divide the resulting nonlinear optimization problem into separate hierarchical optimization subproblems leveraging the concept of Analytical Target Cascading (ATC). Furthermore, we compare the proposed decomposition-based strategy with a centralized approach, in which we solve the same problem, and show that the method presented in this paper can be a potential alternative to a centralized optimization formulation for solving the large-scale, complex integrated plant and control system design. Finally, we compare the resulting performance of using a CVT on the vehicle total-cost-of-ownership with that equipped with a Fixed-Gear Transmission (FGT), which is what is commonly implemented in current electric vehicles. Our results show that by jointly optimizing the design of the transmission along with the control strategy, the CVT yields a lower energy consumption and total-cost-of-ownership compared to that of the FGT.
Keyword:
Mechanical power transmission
Batteries
Optimization
Costs
Loss measurement
Vehicle dynamics
Electric machines
Optimization
multi-objective optimization
continuously variable transmission
co-design
system design
simultaneous design
期刊
IF:
7.1
论文数:
1.8W
被引数:
6.6W
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