NDLI: A Systematic Approach of Improving a Fault Tolerant Fuel Cell Bus Powertrain Safety Level

Content Provider	IEEE Xplore Digital Library
Author	Zonglei Feng Zaimin Zhong
Copyright Year	2006
Description	Author affiliation: Tongji Univ., Shanghai (Zonglei Feng)
Abstract	This paper focuses on the safety issue of fuel cell bus powertrain system. It demonstrates a systematic way of evaluation and refinement of the safety degree to advance the confidence of a kind of fuel cell bus powertrain system, and meanwhile a specific approach of safety level evaluation is used. Via functionally summing up the potential faults which may appear and cause economic losses or occupant injury, the deficiency of the powertrain is located. Based on the occurrence, the severity and the detecting possibility, the numerical expressions of the faults property are measured. Through combining these evaluating results, a general safety level can be achieved, which directly reflects the inappropriateness that should be adjusted or redesigned. Continuous improvement, including using the passive methods of hardware redundancy and the active methods of fault diagnosis, detection and fault tolerant control in the electric control system is carried out, leading to a much more reliable system and the updated safety level shows the enhanced confidence of the fuel cell powertrain system. In order to get a more practical control system, a hardware in the loop test bench is set up to test the performance of the controllers, the core of the powertrain system, under different working conditions, especially those when faults appear. The actual execution of the approach shows that it is an objective analysis method for the innovative powertrain system and can help to improve the system reliability of the fuel cell bus systematically.
Starting Page	73
Ending Page	77
File Size	5962812
Page Count	5
File Format	PDF
ISBN	1424407583
DOI	10.1109/ICVES.2006.371557
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-12-13
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	System testing Fault Diagnosis Power generation economics Control systems Fault tolerant Fault tolerant systems Fuel Cell Bus Fuel cells Mechanical power transmission Fuel economy Hardware Safety Power system reliability Powertrain System Safety Degree
Content Type	Text
Resource Type	Article

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