Effects of Control Strategy and Calibration on Hybridization Level and Fuel Economy in Fuel Cell Hybrid Electric Vehicle 2006-01-0038
Using dynamic causal models for a direct-hydrogen fuel cell and a DC/DC converter we design decentralized and multivariable controllers regulating the bus voltage and preventing fuel cell oxygen starvation. Various controller gains are used to span the fuel cell operation from load-following to load-leveling, and hence, determine the required fuel cell-battery sizing (hybridization level) and the associated trends in the fuel economy.
Our results provide insight on the strategy and calibration of a fuel cell hybrid electric vehicle with no need for a supervisory controller that typically depends on optimal power split during a specific driving cycle. The proposed controllers directly manipulate actuator commands, such as the DC/DC converter duty cycle, and achieve a desired power split. The controllers are demonstrated through simulation of a compact sedan using a mild and an aggressive driving cycle.
Citation: Suh, K. and Stefanopoulou, A., "Effects of Control Strategy and Calibration on Hybridization Level and Fuel Economy in Fuel Cell Hybrid Electric Vehicle," SAE Technical Paper 2006-01-0038, 2006, https://doi.org/10.4271/2006-01-0038. Download Citation
Author(s):
Kyung-Won Suh, Anna G. Stefanopoulou
Affiliated:
University of Michigan, Ann Arbor
Pages: 14
Event:
SAE 2006 World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Applications of Fuel Cells in Vehicles 2006-SP-2006
Related Topics:
Hybrid electric vehicles
Fuel economy
Fuel cells
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