07-Ajay-Lukah-YASA_OpenForum_FINALDECK.pdf - SMMT
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SAE INTERNATIONAL SAE INTERNATIONAL Copyright © SAE International. Further use or distribution is not permitted without permission from SAE Ajay Lukha, CCO, YASA Limited 1 50,000+ POSSIBLE COMBINATIONS Ajay Lukha, CCO, YASA Limited
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Transcript of 07-Ajay-Lukah-YASA_OpenForum_FINALDECK.pdf - SMMT
SAE INTERNATIONALSAE INTERNATIONAL
Copyright © SAE International. Further use or distribution is not permitted without permission from SAE
Ajay Lukha, CCO, YASA Limited 1
50,000+ POSSIBLE COMBINATIONSAjay Lukha, CCO, YASA Limited
SAE INTERNATIONALSAE INTERNATIONAL
Copyright © SAE International. Further use or distribution is not permitted without permission from SAE
Ajay Lukha, CCO YASA Limited 2
SAE INTERNATIONALSAE INTERNATIONAL
Copyright © SAE International. Further use or distribution is not permitted without permission from SAE
Ajay Lukha, CCO, YASA Limited 3
Supplier of Axial-Flux electric motors &
controllers
E-motors >14 kW/kg already in
series production
Supplying PHEV and BEV platforms
to global OEMs
Spun out from research at Oxford
University in 2009
SAE INTERNATIONALSAE INTERNATIONAL
Copyright © SAE International. Further use or distribution is not permitted without permission from SAE
Ajay Lukha, CCO, YASA Limited 4
YASA electric motor
• 260Nm / 180kW 10s peak
• 65mm axial length, 260mm dia
• 12kg (15kW/kg)
SAE INTERNATIONALSAE INTERNATIONAL
Copyright © SAE International. Further use or distribution is not permitted without permission from SAE
Ajay Lukha, CCO, YASA Limited 5
BATTERY SIZE IS EVERYTHING
Critical zone
for high
WLTP
drive cycle
efficiency
SAE INTERNATIONALSAE INTERNATIONAL
Copyright © SAE International. Further use or distribution is not permitted without permission from SAE
Ajay Lukha, CCO, YASA Limited 6
Vehicle
Performance
Vehicle
range0
Component
Cost & Mass MetricsDrive-cycle
Performance Targets:
Acceleration,
Top Speed, Range
Possible Powertrain
Configurations
Powertrain Performance
Metrics, Efficiency
Initial Estimates:
Vehicle Mass
Battery Size
Powertrain ChoiceRolling Resistance
Aero Drag
Motor Thrust
Acceleration
Weight
Simple Vehicle Model
Cost/RangeFeedback Loop 2
Resize battery/motor to meet minimum cost
Resize motor and gearbox
PerformanceFeedback Loop 1 Powertrain & battery
cost
Vehicle
Mass
Powertrain config
Battery size
kg
kW
$
ONE MILLION+ VARIATIONS… WHICH IS BEST?
SAE INTERNATIONALSAE INTERNATIONAL
Copyright © SAE International. Further use or distribution is not permitted without permission from SAE
Ajay Lukha, CCO, YASA Limited 7
Battery size: 126.2kWh Battery size: 119.5kWhBattery size: 134.1kWh
Optimum Size Powertrain to Achieve Performance
IPM motor, Si
controller
YASA motor,
Si controller
YASA motor, SiC
controller
SAE INTERNATIONALSAE INTERNATIONAL
Copyright © SAE International. Further use or distribution is not permitted without permission from SAE
Ajay Lukha, CCO, YASA Limited 8
Email [email protected] for more info
www.yasa.com @YASAMotors
