Smart EVSE Project OverviewjCharles Zhu

Director, Automotive Products,

Infrastructure Working CouncilChicago, IL – June 28, 2012g , ,

Delta Group

• Celebrating 40 years of innovation & growth

• Worldwide leader in Power, and power related products

• OEM supplier to the computer, telecom, lighting, and automotive industries

• 2011 revenues exceeded 7 billion dollars (36% CAGR since 1971)( )

• Leader in energy efficient technology and products

•13,700,000+sq. ft of manufacturing space located in 8 countries on 3 continents

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FOA-554

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Program Team

DOE

CMBU

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DOE DE-FOA-0000554 Objectives

Area of Interest 1: L2 Smart Grid-Capable EVSE for Residential Use

1) To develop “smart grid-capable” L2 EVSE that incorporate the following features:

• Bi-directional communications between EVSE and energy service providers• Revenue grade metering• Revenue-grade metering• Advanced metering infrastructure (AMI)/Ethernet/power line communications

(PLC)/Wi-Fi/cellular/ZigBee interface capable• Interface capable with in-home displays and home energy management systemsInterface capable with in home displays and home energy management systems• Utility communication messaging (pricing/demand response/forecasting signals, etc.) • Controls (direct load control at fixed percents of EV load reduction, remote

disconnect)

2) To demonstrate system-cost optimized design that reduces EVSE cost by a minimum of 50% compared to today’s EVSE

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Program Phases and DeliverablesIn Phase 1 (Research and Development), phase objectives are:

•To establish a preliminary functional specification based on the collaborative inputs of all parties and which meets all requirements of DOE including the 50%+ costof all parties, and which meets all requirements of DOE including the 50%+ cost reduction and conformance to applicable codes and standard.•To design and construct a prototype meeting all functional requirements.•To update this design to field-ready state, culminating in a field-ready prototype. •To field-test the field-ready prototype and test all functions including smart-gridTo field test the field ready prototype, and test all functions including smart grid communication, in advance of shipping prototype units to the Department of Energy for Testing. •To ship two field-ready prototypes to the Department of Energy by the end of Phase 1 as required by the FOA1 as required by the FOA.

In Phase 2 (Testing & Certification), phase objectives are: •To support the Department of Energy with installation, test planning, data interpretation and other support as necessary throughout the test periodinterpretation, and other support as necessary throughout the test period. •To see the prototype testing successfully through the full test schedule.•To define plans for near-term certification and commercialization of the smart-charger as an available residential project.

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Delta Efficient & Renewable Energy Products

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EV Charging Solutions

SiteMonitoring

System

Smart Grid &Energy

Management

Renewable Power System

LED LightingChargingNetwork

ManagementSystem

(multiple sites)

Smart Meter

(multiple sites)

Web Portal

P EV Charger

Power Distribution

Web Portal

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Power Transmission

g

Existing L2 EVSE On The Market

DeltaAeroVironment ClipperCreek

Blink

SAE J1772 St d d C li

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SAE J1772 Standard Compliance Some designs incorporated wireless communication for billing

ChargePointLeviton

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New Features To Be Developed

Smart grid-capable Smart grid capable Communication between EVSE and Grid TOU passing Neighborhood charging coordination/Demand response Neighborhood charging coordination/Demand response Communication between EVSE and EV/PEV

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Smart EVSE System ArchitectureSmart EVSE

Plug‐in Vehicle (PEV)

Home Meter(AMI) J1772Energy

208VAC to 240VAC

REVENUE GRADE METER

AMIComm.(secured)

Home Energy Gateway

PEV Charger

Zigbee

Energy Provider

CONTROL

COMMUNICATIONtoservice panel

PROTECTION PLCZigbee(inst. home 

power)

Zigbee(optional 

E2E 

NeighborhoodEVSE‐to‐EVSE 

(E2E)Gateway

home internet

Household Smart 

Appliances

Zigbee

Cloud

Smart EVSE 2Gateway

Smart EVSE 3Gateway

comm.)

hSmart EVSE XGateway

home internet

Figure 1. Baseline System Architecture of Interest for System-Cost-Optimized Smart EVSE. Home gateway solution provides bi-directional communication with both utility and smart EVSE; consumer can configure EV charging preferences at the EVSE based on information exchange through the gateway.

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Reduction in Cost

Cost Reduction Approaches: Function Integration

Scale of Economy

Manufacturing Capability

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Function Integrationg

New FunctionNew Function

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From Functions to Building Blocks

FunctionsTOU based charge scheduling

Messages

TOU based charge schedulingLimit-Demand based charge coordination

Revenue-Grade Metering

MessagesTime Of Use (TOU) Price

Demand ResponseF ti Si l

Communication Channels

Forecasting SignalsPower Limit & Usage

Communication ChannelsZigbeePLCWi-Fi

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Charging Coordination

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Architecture

Neighborhood EVSEs

infrastructure communications

Core EVSE communications

Utilit

Optional EVSE communications

Utility

Zigbee PLC

(Home Usage) Smart

EVSE

Home Energy Gateway Smart

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Smart Appliances

Charging Coordination

Transformer Rating

Real-Time Usage

Charging Requests

Case 4

8000

10000

12000

0

2000

4000

6000

8000

1 2 3 4 5 6 7 8 9

Time(Hours)

Power(W

)

EV3

EV2

EV1

Group Queuing, Sequencing

Pilot signalPilot signal

Pilot Signal

Sending Current Limit Signal to EV

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Sending Current Limit Signal to EV

Challenges

a) Regulation Barrier: ) S ita) Security

b) Differences among statesb) Standards refining

a) SAE (Communication between EV and EVSE)a) SAE (Communication between EV and EVSE)b) SEP (ZigBee alliance and HomePlug alliance, Smart

Energy Profile)c) Infrastructure

a) AMI populationb) Metering and billingc) Securityd) Demand Response functiond) Demand Response functione) API (Application Programming Interface)- Data exchange

between utility and clouds

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Thank youThank you

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