SiC for emobility applications

Transcription

1 SiC for emobility applications Aly Mashaly Manager Power Systems ROHM Semiconductor GmbH MODENA FIERE JUNE 2018.

2 ROHM SiC Development History 18 years experience Started automotive business Fully integrated production system Ensuring High Quality inch 2inch inch 4inch World s first Trench SiC MOS Mass production inch SiC SBD Mass production Started SiC R&D Acquired SiCrystal SiC SBD / MOS Full SiC Module ( ) SiC substrate Mass production Mass production World s first P. 1

3 Inverter Motor Power electronic is a key technology for Hybrid and Electric Vehicles 48 V EMS / Converter 12 V Air Co Compressor Pumps Auxiliaries BMS HV. Battery LV HV U V W Steering Drive On Board Charger High Power / Transmission Wireless Converter Charger EMS: Energy Management Systems BMS: Battery Management Systems AC Charging station Fast Charging station () P. 2

4 Range road map of Electrical Vehicles To increase the emobility market the Battery range has to be increased Solution from OEMs Batteries get bigger Range get longer ~ 140 km > 180 km > 250 km > 400 km 24 kwh > 30 kwh > 40 kwh > 70 kwh To reduce charging time Charging Power get higher 50 kw 20 kw Fast charging on the High way Charging at commercial places kw 50 kw 3-6 kw Charging at Home or Office 11 / 22 kw P. 3

5 Typical single phase OBC (3.6 / 7.2 kw) AC input (1-3ph) AC Two-stage PFC Isolated / HV battery AC AC Full bridge rectifier Boost PFC LLC + full bridge rectifier Input filter Output filter P. 4

6 Typical single phase OBC (3.6 / 7.2 kw) AC input (1-3ph) Two-stage PFC Isolated / HV battery AC AC AC ROHM s SiC devices are already in use since 2012 for On-Board Charger systems worldwide for EV or PHEV and sales record is rapidly increasing W/W continuously Two-stage PFC: Booster diode: 650V SiC SBD Benefit of SiC SBD P. 5

7 SiC solutions in OBC applications PFC SiC SBD (650V/1200V) SiC MOS (650V/30mohm, ~) Power shunt (2512/3W) THD PKG SiC MOS (650V/30mohm, 60mohm) Secondary rectifier SiC SBD (650V/1200V) Si Fast Recovery Diode (600V/20A) TO220 / TO247 SMD PKG DPAK / D2PAK / D2PAK 7 Pin P. 6

8 Inverter Motor Power electronic is a key technology for Hybrid and Electric Vehicles 48 V EMS / Converter 12 V Air Co Compressor Pumps Auxiliaries BMS HV. Battery LV HV U V W Steering Drive On Board Charger High Power / Transmission Wireless Converter Charger EMS: Energy Management Systems BMS: Battery Management Systems AC Charging station Fast Charging station () P. 7

9 Formula E (Technical Partnership with VENTURI) Integrating ROHM's full SiC module decreases inverter size and weight ROHM SiC power devices adopted in inverters for the world s premiere race class for electric-powered cars: Providing support as an official technology partner of Formula E VENTURI team. P. 8

10 Inverter Losses 200kW Si IGBT based Inverter Power Devices : Si IGBT + Si FRD 220kW SiC MOSFET based Inverter Power Devices : SiC MOS + SiC SBD Module : ROHM SiC Module Inside >400W less per switch at Max Power operation P. 9

11 Inverter Efficiency 200kW Si IGBT based Inverter Power Devices : Si IGBT + Si FRD >1.3% better efficiency at Max Power operation 220kW SiC MOSFET based Inverter Power Devices : SiC MOS + SiC SBD Module : ROHM SiC Module Inside 1.1% better maximum efficiency P. 10

12 Traction Inverter Comparison Key Achievements: Miniaturization (ca. 30%), Weight Reduction (6kg 40%), High Power Density (>1.5times) Inverter Si-IGBT based SiC-MOSFET based Output Power 200kW 220kW Max SW Frequency 16kHz 24kHz Weight 15.0kg 9.1kg Volume 14.3L 10.0L Power Density 14kW/L 22kW/L P. 11

13 Inverter Efficiency [%] Inverter Efficiency (at Maximum Torque operation) Efficiency Curve at Max Torque SiC MOS Max Torque Si IGBT Max Torque Inverter Si-IGBT based SiC-MOSFET based Output Power 200kW 220kW Inverter Efficiency 1* Inverter Efficiency 2** Max SW Frequency 98.0% 99.1% 96.9% 98.2% 16kHz 24kHz Weight 15.0kg 9.1kg Volume 14.3L 10.0L Power Density 14kW/L 22kW/L * Max efficiency ** Max Power Operation Output Power [kw] P. 12

14 Summary Big Potential for SiC in Automotive applications (OBC, / Converters and Power train) ROHM s SiC Module is used in 220kW class Traction Inverter. Its inverter achieves high efficiency as 99.1% and realizes lower volume (30% less), lower weight (40% less), and higher power density (>1.5times higher) than conventional Si IGBT based inverter. A higher efficiency inverter enable to reduce battery cost / capacity thanks to extension of cruising distance (>10%) P. 13

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