Investigation of Shifted PWM Methods for a Dual Three-Phase System to Reduce Capacitor RMS Current
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:
Hopfensperger, Bernhard; Daubner, Andreas; Herrmann, Fabian (Ostbayerische Technische Hochschule Regensburg, Germany)
Hopkins, Andrew; Mellor, Phil (University of Bristol, UK)
Inhalt:
Mild hybrid automotive topologies containing a 48V high power (>15 kW) electric drive system demand a high integration of power electronics and electrical machine. A multi-phase motor winding topology helps to keep the per-phase operating currents to a reasonable level. Close integration and multi-phase system have led to a drive system with dual 3-phase systems supplied by a common 48V DC-link, which allows to shift PWM patterns for reduction of DC-link capacitor ripple current and size. This paper derives some basic rules for combinations of common PWM methods for dual 3-phase systems without magnetic cross-coupling. Experimental measurements verify simulated results.