To reduce the costs of electric vehicle drives one can increase the stress on the components or choose cost favourable materials. But when the new cost-effective components are installed in a prototype or a small series EV, a check of the wear and the reliability is only possible after some years. With this achieved results are not very exact, because the stress on the components is not reproducible and it takes a long time to obtain results. To investigate the wear and the reliability of EV-drives, it is meaningful to use endurance tests. In a few weeks or months it is possible to test the EV-drives, with fixed reproducible environmental and stress conditions according to a complete lifetime cycle. Another reason to execute endurance tests is the fact that car manfuacturers demand a quality management from the supplier (ref. ISO 9000). An endurance test could be part of the quality control system. This paper shows with an example the execution of endurance tests, what the testbench should look like, which equipment is required, and which modifications of the original EV-drives are necessary and allowed. Some results of an endurance test with an EV DC-drive are presented. With these results and the experience of the first test the demands for further endurance tests are specified. The conclusion would be: endurance tests for electric vehicle drives are not lavish to carry out. The results help design future cost-effective EV-drives.
Endurance tests for electric vehicle drives
Lebensdauerversuche von Elektrofahrzeugantrieben
EVS, International Electric Vehicle Symposium, 12 ; 2 ; 640-649
1994
10 Seiten, 12 Bilder, 3 Tabellen, 2 Quellen
Aufsatz (Konferenz)
Englisch
Endurance Tests for Electric Vehicle Drives
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