Impact of Wide-Bandgap Semiconductors on DC-Link Considerations in Servo-Drive Applications
Konferenz: PCIM Europe digital days 2020 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
07.07.2020 - 08.07.2020 in Deutschland
Tagungsband: PCIM Europe digital days 2020
Seiten: 8Sprache: EnglischTyp: PDF
Autoren:
Neemann, Hendrik; Obernolte, Urs (Lenze SE, Germany)
Schobre, Thorben; Mallwitz, Regine (Technische Universität Braunschweig, Institute for Electrical Machines, Traction and Drives, Germany)
Inhalt:
SiC-MOSFETs can decrease the power losses in servo-drive applications significantly through fast switching speeds and small passive components regarding operation at high switching frequencies. In SiC-inverters high di/dt-rates cause higher voltage peaks and oscillations in the DC-link in comparison to IGBT-devices. Thus PCB-layer design and applied capacitor technologies need special attention. In this paper fast commutation behavior is investigated by simulation and verified by hardware measurement to propose a proper design for sufficient di/dt damping.