Numerous ideas to improve traction inverters for future electric vehicles were presented in literature. However, fair experimental comparisons of these concepts are rare. In this work, three highly-relevant concepts for traction systems are compared experimentally to a reference 2-level silicon IGBT inverter with a dc-link voltage of 400V. First, the dc-link voltage is increased from 400V to 800V. Secondly, the replacement of silicon IGBTs with silicon carbide MOSFETs. Thirdly, the usage of a three-level inverter instead of two-levels. To ensure a fair comparison, four prototypes with a nominal power of 80kW were constructed with fully use of carry-over parts and tested on two different test benches. The comparison is carried out regarding efficiency, total harmonic distortion, electromagnetic emission and technology readiness.
Experimental Validation of Design Concepts for Future EV-Traction Inverters
2018-06-01
4463970 byte
Conference paper
Electronic Resource
English
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