Abstract
Power density is a key performance factor in order to reduce the cost and size of a power converter. Because of the unknown junction temperature, today’s design margins are relatively high to ensure safe and a reliable operation. In this paper, the on-state voltage drop is measured online for all insulated gate bipolar transistors (IGBTs) in the inverter, using advanced gate driver. The die temperature is estimated and monitored on each device during power converter operation. Based on the monitored temperature in real time, the maximum power capability is detected. The output power is increased until a safe operating temperature of power modules. This enable a power density is increased by 11.16 kW/litre to 19.13 kW/litre in a low voltage power stack which is typically used in wind power converters. Experiment results are shown for safe operation of converter at around 1.2 MW, which is built in a standard
size for the 600 - 700 kW. Furthermore, the 1700 V, 1000 A power module is replaced with a 1400 A module to increase the load current.
size for the 600 - 700 kW. Furthermore, the 1700 V, 1000 A power module is replaced with a 1400 A module to increase the load current.
Original language | English |
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Title of host publication | Proceedings of the 2015 17th European Conference on Power Electronics and Applications (EPE'15 ECCE-Europe) |
Number of pages | 9 |
Place of Publication | Geneva, Switzerland |
Publisher | IEEE Press |
Publication date | Sept 2015 |
Pages | 1-9 |
DOIs | |
Publication status | Published - Sept 2015 |
Event | 17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015 - Centre International de Conférence Genève (CICG), 17 rue Varembé CH . 1211 Genève 20, Geneva, Switzerland Duration: 8 Sept 2015 → 10 Sept 2015 |
Conference
Conference | 17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015 |
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Location | Centre International de Conférence Genève (CICG), 17 rue Varembé CH . 1211 Genève 20 |
Country/Territory | Switzerland |
City | Geneva |
Period | 08/09/2015 → 10/09/2015 |
Keywords
- Power density
- Junction temperature
- IGBT
- Gate driving
- Online monitoring