SAE INTERNATIONAL
SAE J2954/2 KICKOFF
JESSE SCHNEIDER (BMW) SAE J2954 TASKFORCE CHAIR
MIKE MASQUELIER (WAVE) CO-CHAIR SAE J2954/2 HD SUBTEAM
WIRELESS POWER TRANSFER AND ALIGNMENT METHODOLOGY SAE J2954 Taskforce Structure: OEM/ Supplier Co-Chairs
J2954 OEM Advisory J2954 Taskforce Chair Team Jesse Schneider-BMW
Alignment Testing & Magnetic Field UL 2750** / Bus /HD EMC /EMF Methods & * Validation Interoperability SAE J2954 Charging Co-Chairs: Communication Joint Team Co-Chairs: Co-Chairs: SAE J2954-2 R. Kautz – Co-Chairs: Co-Chairs: M. Abdul-Hak – I. Teerlinck – Co-Chairs: Ford S. Muskett – J. Bablo – Daimler Toyota OEM TBD 11-16 R. Sutton – Jaguar UL Jon Sirota – G. Covic – M. Masquelier – TDK K. Sealy – E. Taha – Witricity University of WAVE R. Boyer – Witricity Auckland Nissan Delphi
Liaisons: ISO**/IEC : J. Sirota (Witricity)/ I. Teerlinck (Toyota) SAE EMC Committee: R. Kautz (Ford) / R.Boyer (Delphi) AAMI/ ANSI/CISPR: R. Boyer (Delphi) / Sutton (TDK RF) FCC/FDA: Schneider / Kautz / Sutton / Boyer
*In Coordination with ISO & SAE Hybrid Communications & DSRC Committees **SAE J2954 MOU with UL established. ISO MOU under discussion. SAE J2954 Status für DKE, Jesse Schneider (C), SAE SAE INTERNATIONAL International 2 Vehicle Wireless Charging Standards Overview Overlap SAE, UL, ISO
SAE J2836/6: Use Cases and Communications SAE J2847/6: WPT Communication PHEV and the Utility Grid SAE J2931/6: Digital Communication for WPT for PHEV
ISO 19363: Wireless connection to an external electric power supply (Vehicle Side)
Grid/ Customer Interface
Vehicle Controller PSDO
Vehicle Assembly Agreement (Secondary Coil) Charging Controller
Ground Assembly (Primary Coil)
UL 2750:(Draft) Verification of SAE TIR J2954: Wireless Wireless Charging Base Safety Power Transfer and Alignment (Infrastructure) MOU (Vehicle and Infrastructure)
SAE J2954 Status für DKE, Jesse Schneider (C), SAE SAE INTERNATIONAL International 3 SAE J2954/2 SCOPE: Heavy Duty similar to Light duty
Vehicle to Magnetic EVSE Interoperability Alignment Specification Methods
Safety Limits and Verification Performance Testing Targets SAE J2954/ 2
Technical Information Report (2017) Recommended Practice (2018) Standard (2019)
SAE J2954 Status für DKE, Jesse Schneider (C), SAE SAE INTERNATIONAL International 4 WPT Frequency Determination SAE J2954 Decision for Light Duty
Interoperability: “85kHz”Frequency Band Decision for SAE J2954 : Frequency
Start of Band (kHz) End of Band (kHz) Light Duty Vehicles 81.38 90.00
SAE J2954 Status für DKE, Jesse Schneider (C), SAE SAE INTERNATIONAL International 5 SAE J2954 Taskforce Light Duty WPT Power Classes
L.D. WPT Power Classes* WPT1 WPT2 WPT3 WPT4
Maximum Input Power 3.7 kW 7.7kW 11kW 22 kW1 Defined in SAE To be defined in SAE TIR J2954 J2954 Standard Minimum target efficiency >85% Aligned
* J2954/2, The Heavy Duty WPT 4 is under evaluated for higher power levels.
GA VA Coupled Circuit Interoperability I I inv 1 I2 Classes/ AC-DC DC-AC Filter/ GA VA Filter/ Impedance V Rectifier Battery (PFC) dc Inverter IMN Coil Coil IMN Converter Performance
Z1 Z2 Targets
SAE J2954 Status für DKE, Jesse Schneider (C), SAE SAE INTERNATIONAL International 6 SAE J2954 Taskforce, HD
Goal: Create a new TIR SAE Document: SAE J2954/2 within J2954 Taskforce (same as present structure). Make main SAE J2954 WPT LD with reference to buses only.
Scope: SAE J2954 establishes an industry-wide specification guideline that defines acceptable criteria for the interoperability, electromagnetic compatibility, minimum performance, safety and testing for wireless charging of electric and plug-in electric heavy-duty vehicles.
Rationale: There are some significant differences between Power Classes of LD J2954 (3.7-22kW) and HD J2954/2 (up to 250kW) vehicles for wireless charging. For this reason a separate HD document was created to address bus and rail applicationsSAE INTERNATIONAL of WPT. Differences between LD & HD WPT
Frequencies tend to be lower because of switching losses Parking location geometry differences with LD case Primary alignment methods will probably be different. Vehicle geometry considerations Possible issues with exposure to high field levels requiring physical barriers on vehicles or charging areas Foreign object detection differences? Ground clearances are greater so nature of foreign objects and detection challenges are different than LD case EMC - issues of interference within the vehicle and between vehicles will differ from the LD case because of differences in parking spaces and distances between charging system and possible susceptible electronic subsystems
SAE INTERNATIONAL J2954/2 Heavy Duty WPT Frequency to Revisit Frequency Bands
Frequency Band Decision for SAE J2954/2 :
Start of Band (kHz) End of Band (kHz)
Heavy Duty ? ? Vehicles
SAE INTERNATIONAL SAE J2954 Status 2014-12 9 J2954/2 Heavy Duty WPT Draft Power Classes
WPT Power Class WPT Power Class WPT 4 WPT 5 Classification H.D. H.D. Maximum WPT Power Up to 50 kW Up to 250 kW Efficiency Rating Target* >85% >85%
* Under Team Review
SAE INTERNATIONAL SAE J2954 Status 2014-12 10 SAE J2954 /2 Standardization:
•First Phase: TIR J2954 (Technical Information Report) LD Guideline published – Specification for Vehicle and Ground Infrastructure WPT and alignment – Downloadable under: http://standards.sae.org/j2954_201605/
• H.D. Charging TIR J2954-2 Kick-off in February 2017 in California around SAE Hybrid Forum
• Planning to invite supplier and bus OEMs to join team.
• Basis of Safety, Performance Interoperability and Alignment from the Light Duty SAE J2954 document. However, it is possible that frequency and methodoloy differ, for instance
•Monthly SAE J2954/2 Webex Planned in 2017
SAE J2954 Status für DKE, Jesse Schneider (C), SAE SAE INTERNATIONAL International 11 THANK YOU
QUESTIONS?:
SAE J2954 WIRELESS POWER TRANSFER
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