Abstract
Thermo-sensitive electrical parameters (TSEPs) are widely employed in the junction temperature estimation of insulated gate bipolar transistor (IGBT) modules. In this paper, the IGBT on-state voltage at a low conduction current of tens of milliamps is explored as a novel indicator and named IGBT knee voltage. Unlike existing TSEPs, this specific on-state voltage is independent of the operating current and package-level degradation of IGBT modules and has a monotonic thermal dependence. As a result, the junction temperature can be estimated based on the IGBT on-state saturation voltage information without the need for synchronized current sampling and dedicated degradation calibration. A single-phase inverter case study is presented to demonstrate the proposed method. The experimental results verify the monotonic dependence between the IGBT knee voltage and junction temperature.
| Original language | English |
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| Title of host publication | 2022 International Power Electronics Conference, IPEC-Himeji 2022-ECCE Asia |
| Number of pages | 5 |
| Publisher | IEEE |
| Publication date | 2022 |
| Pages | 461-465 |
| ISBN (Electronic) | 9784886864253 |
| DOIs | |
| Publication status | Published - 2022 |
| Event | 2022 International Power Electronics Conference, IPEC-Himeji 2022-ECCE Asia - Himeji, Japan Duration: 15 May 2022 → 19 May 2022 |
Conference
| Conference | 2022 International Power Electronics Conference, IPEC-Himeji 2022-ECCE Asia |
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| Country/Territory | Japan |
| City | Himeji |
| Period | 15/05/2022 → 19/05/2022 |
| Sponsor | IEEE Industrial Electronics Society (IES), IEEE Industry Aplications Society (IAS), IEEE Power Electronics Society (PELS) |
| Series | 2022 International Power Electronics Conference, IPEC-Himeji 2022-ECCE Asia |
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Bibliographical note
Publisher Copyright:© 2022 IEEJ-IAS.
Keywords
- condition monitoring
- Insulated gate bipolar transistor
- junction temperature
- knee voltage