RITALIN – High-Performance Dual SiC Inverter for EV Motorsport
The RITALIN project focuses on the development of an advanced dual silicon carbide (SiC) inverter for high-performance electric vehicles.
Project Highlights:
- Evolution: Since 2022, development of a dual inverter system to drive two 3-phase motors with one housing and shared control unit, offering reduced space, lower EMI, and optimized DC-link utilization.
- Cooling: Advanced pin-fin cooler optimized via CFD simulation, achieving a thermal resistance of 0.086 K/W and keeping junction temperatures safely below 150 °C.
- Thermal Interface & Clamping: Use of graphite-based phase-change material, high clamping force via disc springs, and specially designed cooling structure to ensure optimal thermal conductivity.
- Housing & Integration: Lightweight sheet metal housing and custom DC-link capacitors, achieving a power density of 56 kW/l and 78 kW/kg at 2×350 kW output @800V system voltage.
- Real-time junction temperature estimation enables maximum power output while ensuring safety.
SiC traction inverter boosts the performance of electric vehicles
In electric vehicles, power electronics with silicon carbide (SiC)-based semiconductors appear to offer a wide range of advantages over standard IGBT technology. Part of the RITALIN project is a high-performance SiC traction inverter to demonstrate the full potential of the new technology.
- SiC-basierte Wechselrichter ermöglichen einen hohen Wirkungsgrad sowie eine hohe Leistungsdichte und werden als Ersatz für die konventionelle Siliziumtechnologie gewählt
- Der Wechselrichter basiert auf speziellen Vorserien-SIC-Automobil-Halbbrücken-Leistungsmodulen, die exklusiv vom Hersteller bereitgestellt werden
- Eine Nennausgangsleistung von 340kW und ein maximaler Phasenstrom von über 500A @ 800V ist zu erwarten
Inverter Prototyp
