Proportional Driver for SiC BJT’s in electric vehicle inverter application
Konferenz: PCIM Europe 2014 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
20.05.2014 - 22.05.2014 in Nürnberg, Deutschland
Tagungsband: PCIM Europe 2014
Seiten: 8Sprache: EnglischTyp: PDF
Persönliche VDE-Mitglieder erhalten auf diesen Artikel 10% Rabatt
Autoren:
Frankeser, Sophia; Hiller, Sebastian; Lutz, Josef (TU Chemnitz, Germany)
Domes, Konrad (Fraunhofer IISB, Germany)
Inhalt:
This paper describes the energy saving potential of base drive units for high-power bipolar junction transistors (BJTs). BJTs are current-controlled devices which lead to high requirements on the base drive circuit: high turn-on current, an on-state-current which is around 3% of the collector current and protections against parasitic turn-on during turn-off. Safety features like desaturation protection, safe startup of the base driver (because of essential large bypass-capacitors) and adapted PWM control strategies have been investigated. Furthermore, application related considerations are made: Especially in inverters for electrical drives with user dependent drive profiles (e.g. for a motor of an electrical vehicle), power savings can be achieved by adjusted base drive circuits and control strategies.