As part of the global CO2 emission reduction initiative, Lotus Engineering has contributed to the development of a zero tailpipe emission London taxi powered by a 30kW hydrogen (PEM) fuel cell and a 14kWh-100kW lithium-ion (NCM) battery system. To integrate the two power sources, the power coupling devices and the propulsion system, a modular control framework was adopted. Using a combination of static efficiency maps and quasi-static system models, the modular architecture permits vehicle development work using heuristic reasoning in its energy management control layer with flexibility for future online optimisation. The modular approach segments the control structure into an energy manager, a power manager and a torque manager with structured interfaces between modules. The architecture permits decoupling of energy, power and drivability management thus offering a modular and systematic development framework. An important aspect of designing a vehicular hybrid power source is to formulate a control strategy that can take advantage of the inherent scalability and robustness benefits of hybrid systems. With rapid improvements and introductions of newer yet more economically viable energy storage and energy converters, it is essential that control architectures have the capability to adapt to these new systems without a complete redesign. This paper presents the control architecture and electrical topology of a hybridised power delivery system designed for a fuel cell + lithium ion battery (H2+Li-Ion) series hybrid electric vehicle. We will present the design methodology, simulation results, test data and the control framework used to develop this technology demonstrator.
Development of a modular power, energy and drivability control framework for a series H2+Li-ion hybrid taxi
2010
7 Seiten, 10 Bilder, 1 Tabelle, 9 Quellen
(nicht paginiert)
Aufsatz (Konferenz)
Datenträger
Englisch
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