Abstract
This paper presents a method for estimating the instantaneous turn-off collector voltage of high-power IGBT modules. Because of the parasitic inductors in circuit, the fast turn-off collector current usually leads to a voltage overshoot on IGBT modules during the turn-off transition. In terms of high-voltage and high-power IGBT module, there exists an emitter-auxiliary inductor between the power emitter and Kelvin emitter. The same variable dic/dt during turn-off transition will also induce a measurable voltage veE across the emitter-auxiliary inductor LeE. As a result, the hazardous turn-off peak collector voltage can be reflected by the induced νeE in the case of fixed commutation loop inductors and emitter auxiliary inductor. Finally, a double pulse test platform is used to validate the effectiveness of estimation method. The estimation curves of turn-off collector voltage are in accordance with the experimental results.
Original language | English |
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Title of host publication | Proceedings of IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia), 2016 |
Number of pages | 6 |
Publisher | IEEE Press |
Publication date | May 2016 |
Pages | 3670 - 3675 |
ISBN (Electronic) | 978-1-5090-1210-7 |
DOIs | |
Publication status | Published - May 2016 |
Event | 2016 8th International Power Electronics and Motion Control Conference - ECCE Asia (IPEMC 2016-ECCE Asia) - Hefei, China Duration: 22 May 2016 → 25 May 2016 |
Conference
Conference | 2016 8th International Power Electronics and Motion Control Conference - ECCE Asia (IPEMC 2016-ECCE Asia) |
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Country/Territory | China |
City | Hefei |
Period | 22/05/2016 → 25/05/2016 |
Keywords
- Collector voltage estimation
- High power IGBTs
- Voltage overshoot
- Emitter-auxiliary inductor