PEV/EVSE Communication SAE Task Force Status
IWC Meeting
3/28/2012Rich Scholer - SAE Communication Task
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Outline
• Background
• PLC Status
• Additional Document Status
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BackgroundMajor Documents and Functions
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1. J2836™ - Use Cases (establishes requirements)
ISO/IEC 15118-1
2. J2847 – Messages, diagrams, etc. (derived from
the use case requirements)
ISO/IEC 15118-2
3. J2931 – Communication Requirements
ISO/IEC 15118-3
4. J2953 – Interoperability
ISO/IEC 15118-4
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Summation of SAE Communication StandardsJ2836™ – General info (use cases)
Dash 1 – Utility programs *
Dash 2 – Off-board charger communications*
Dash 3 – Reverse Energy Flow
Dash 4 – Diagnostics
Dash 5 – Customer to PEV and HAN/NAN
Dash 6 – Wireless charging/discharging
J2953– Interoperability
Dash 1 – General Requirements
Dash 2 – Testing and Cert
Dash 3 –
• * Published
J2847– Detailed info (messages)
Dash 1 – Utility programs *
Dash 2 – Off-board charger communications *
Dash 3 – Reverse Energy Flow
Dash 4 – Diagnostics
Dash 5 – Customer to PEV and HAN/NAN
Dash 6 – Wireless charging/discharging
J2931– Protocol (Requirements)
Dash 1 – General Requirements*
Dash 2 – InBand Signaling (control Pilot)
Dash 3 – NB OFDM PLC over pilot or mains
Dash 4 – BB OFDM PLC over pilot or mains
Dash 5 – Telematics
Dash 6 – DSRC/RFID (wireless charging)
Dash 7 - Security
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J2931/7 Security
J2953/1 Interoperability, J2953/2 Test Procedures
Document Interaction
Utility Programs
DC Charging
Reverse Power
Flow
Diagnostics
Customer to
PEV and
HAN/NAN
Wireless Power
Flow
Use Cases Requirements Protocol
BB OFDM (PLC)
Telematics
DSRC
(& RFID)
Basis
J2836/1™ J2847/1
J2931/1J2836/2™ J2847/2
J2836/3™ J2847/3
J2836/4™ J2847/4
J2931/4
J2836/5™ J2847/5 J2931/5
J2836/6™ J2847/6 J2931/6
PLC Development steps
1. Establish Requirements (publish J2931/1)2. PLC System Diagram (make a picture)3. Generate Test Plan and Lab Setup (EPRI & ANL)4. Review Test Report results (SAE Meeting)5. Establish Timeline
3/28/2012Rich Scholer - SAE Communication Task
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System Architecture (Utility Messages)
EVSE
Com modulePEV
Com modulePLC
ESI
PLC
EUMD
CANZigBee
SEP 1.x to SEP 2.0 Migration Unit
(if needed) ESI Dependent
SEP 2.0 SEP 1.x or 2.0
J1772™
Control
Pilot
SEP 1.x to
SEP 2.0
ZigBee
PLC ZigBee
• Fundamental case
– Highest expected usage
PLC Test Status• March 21-22, 2012 Task Force Meeting
– During this meeting, each of the requirements identified in J2931/1 were voted on for a Pass, Fail or Unknown/Untested position from both attendees and WebEx participants.
– We agreed to move forward with HP GP as the single PLC technology for DC Charging and Utility messages between the PEV and EVSE.
– A decision was also taken to discontinue any testing of other technologies (G3, FSK).
– We are continuing to coordinate effort with the ISO/IEC Project Team 4 testing
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PLC Test Status (cont)Two requirements need additional testing.
• RelComm4 is the effect of consumer network on PEV network, and this showed conflicting results between EPRI and ANL. – We identified differences as updated firmware of PL16 modules, and
corset type.
– The action item was taken for ANL to retest with the EPRI boards, use the coupling cap variation along with a common cordset.
• DCComm.6, the shared network requirement, is the combined effect of both Utility and DC charging messages with the effects of the consumer network. – This solution requires Qualcomm to provide new firmware fixes so that
this requirement can be successfully met. It was decided that the testing will be carried out within two-three weeks at ANL and EPRI.
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Timeline
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Jan Feb Mar Apr May Jun Jul Aug
SAE PLC Test (EPRI, ANL, PNNL)
SAE Task Force Topic - DC Charging
J2847/2 (DC Charging)
J2931/1 (Stack info)
J2931/4 (PLC Protocol)
SAE Hybrid Committee Ballot - DC Charging
J2847/2 (DC Charging) J2847/2
J2931/1, 4 J2931
SAE Formatting
J2847/2 (DC Charging) J2847/2
J2931/1, 4 J2931
Publish J2931 doc(s) Techical Information Reports (TIR)
MVC Ballot - DC Charging (J2847/2 only) J2847/2
Publish J2847/2 Recommended Practice (RP)
2012
Document StatusUtility & DC Charging
• Reopened J2847/1 – Utility messages
– Dan Mepham is adding SEP2 info
• Reopened J2847/2 – DC Charging
– Doug Oliver is adding messages to harmonize with IEC
– Moving sequence diagrams into J1772™
• Reopened J2931/1 – Protocol Requirements
– Slav Berezin is adding Communication Stack sections
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Document Status (cont)• J2836/3™ – PEV as Distributed Energy Resource
(DER) (formerly known as Reverse Power Flow)
– Hank McGlynn – developing use cases for PEV communicating as a DER device
– Grid connected operation as a DER (V2G)• PEV connects through EVSE to a live grid (which can be
islanded) – current source
• On-board or eternal inverter (J2847/2 to be updated to allow for reverse DC flow into external inverter)
• Inverter must fully comply with IEEE 1547 - exceptions to be deferred until next version (e.g. IEEE 1547.4 microgrids and IEEE 1547.8)
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J2836/3™ (cont)
– Off-grid operation of PEV as a power (voltage) source (V2L, V2H, and V2V)
• On-board inverter sets and regulates voltage and frequency for loads
• Loads plug into a vehicle power panel with NEMA outlets (not via EVSE)
• For V2H the connection to the home must be through a UL1008 transfer switch
• High level communication not required for PEV as sole source of off-grid power (defer load sharing with other power sources until next version)
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Document Status (cont)• J2847/3 will follow J2836/3™ effort and use the
J2847/1 SEP2-based approach• SEP2 provides basic DER functionality
• SEP2 will need to be updated for IEEE 1547.8 advanced DER modes
• J2836/4™ - Diagnostics - J2847/4 to follow
– Mike Muller is preparing for EVSE standard functions and diagnostics.
• J2836/5™ - Telematics – J2847/5 to follow
– Venkatesh Donthy is collecting HAN/NAN use cases for customer to HAN interactions
– Consumer and Utility Network expanded cases and synchronizations
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Wireless Charging – Use Cases
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• J2836/6™ - Wireless Charging - Mark Klerer – Coordinating the completion of use cases with the
requirements from J2954 (EVSE and alignment)
– Created second draft with input from J2954 members• Covers Use Cases
– Wireless EV Charger (WEVC) Discovery
– Vehicle Alignment
– Charging Control: Initiation, Power Transfer, Termination
– Monitoring and Diagnostics
• Emergency Shutdown
– Where possible reuse concepts and procedures from conductive charging applications
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J2847/6 & J2931/6
• J2847/6 Messages for Wireless Charging– Draft to be created to meet requirements from Use
Cases in J2836/6: First Draft expected begining May
• J2931/6 Communications Protocol– DSRC to be used as protocol between Base Unit and
Vehicle Unit (EVSE) to be worked in cooperation with J2735 (First Draft end of April)
– RFID to be used to assist in vehicle alignment. Configuration to be defined by J2954. (Expected by end of May)
Interoperability and Security
• J2953/1– Cliff Fietzek restarted monthly meetings
• J2931/7– Hina Chaudhry is coordinating input from SGIP
CSWG and others• Incorporating NIST 7628 guidelines to map out different
domains and defining corresponding threats and risks
• Future focus will be on different security policies and controls recommendation to mitigate the threats thus identified
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