ADVANCED VEHICLE TECHNOLOGIES RESEARCH ANNUAL INDUSTRY ADVISORY MEETING NOVEMBER 14, 2017

Presenter: Michael Lewis mclewis@cem.utexas.edu

CEM Vehicles Research Program

Advance state-of-art and aid commercialization and adoption of new vehicle technologies

1.  Research and Development •  Prototype vehicle builds and demonstrations •  Testing of advanced vehicle components

2.  Education •  Evaluation of zero emissions vehicles for fleet operators •  Students involvement on projects

3.  Technology Transfer •  Projects with industry partners •  Working with small business to evaluate technologies

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Today’s Presentation

Recent Accomplishments •  Paratransit Bus Electrification •  Bus Exportable Power Supply •  Hydrogen Fuel Cell UPS Van

Upcoming Work and Goals

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Paratransit Bus Electrification 4

Paratransit Bus Electrification

•  Sponsor: Federal Transit Administration

•  Partners: Center for Transportation and the Environment, Utah Transit Agency, Transworld Associates, University of Utah

•  Objective: Electrify accessories onboard a paratransit bus to allow the diesel engine to be turned off at passenger stops

•  Goal: Reduces emissions and fuel consumption at sensitive passenger loading zones and increase vehicle life through reduced idling hours

•  How: Replaced belt drive HVAC compressor with an electric compressor powered by a high voltage battery and alternator

•  Accomplishments: Built two prototype buses and delivered to UTA in August and September this year.

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Paratransit Bus Electrification

•  Worked with Transit Agency to retrofit two late model buses

•  CEM designed the system architecture and control system and integrated high voltage components

•  High voltage alternator installed in place of prior belt-driven compressor

•  High voltage lithium ion battery powers compressor and auxiliary heater

•  Demonstration to occur over the next year as team looks to find industry partners to take ownership of system and provide a commercial solution

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A/C Compressor motor

HVAC controller

and inverter

BatteryManagement

System

High voltage alternator

High Voltage ~12kWh

battery pack

AlternatorRegulator350VDC

Battery charger

Power cord 240Vac

Fuse

DC

Contactor

Items inside the EnerDel battery box

Pre-charge resistor and contactor

Aux. coolant heater

High voltage connections shown in red

Battery voltage sensor

Battery current sensor

Heater current sensor

Alternator current sensor

HVAC current sensor

Items inside the contactor box

12V Battery voltage sensor

Bus 12V Battery

Electric compressor High voltage battery

Bus Exportable Power Supply

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Bus Exportable Power Supply

•  Sponsor: Federal Transit Administration

•  Partners: Center for Transportation and the Environment, Hagerty Consulting

•  Objective: Study and demonstrate the feasibility of using a hybrid transit bus for emergency response exportable power

•  Goal: Determine technical, political, and logistics constraints and determine the “value” of exportable power on a transit bus

•  How: Advisory panel meetings to discuss feasibility aspects, followed by a technology demonstrator to be performed end of 2017.

•  Accomplishments: Concluded advisory meetings, modeled BEPS with building loads, and presented results at American Public Transportation Association EXPO.

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Bus Exportable Power Supply

Modeling of the BEPS system to better understand:

•  How BEPS buses could be linked together to power high-load facilities

•  Control strategies to regulate frequency and voltage

•  Fuel consumption

•  Thermal load as the bus idles and exports power

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Hydrogen Fuel Cell Delivery Van 10

Fuel Cell Hydrogen storage

Batteries Electric motor and Power controls

Why Hydrogen Vehicles? Electric vehicles have an energy and power problem when considering the BIG picture

•  A typical fueling station stores 10,000 – 20,000 of gasoline •  That’s up to 668 MWh of energy, or approximately

10 acres of batteries

We do not need to store the energy at the fueling station, but providing recharging power from the grid is not trivial

•  A standard fuel pump dispenses energy in the form of gasoline at a rate of 20 MW •  Level 3 DC Fast Chargers operate at 140 kW

Hydrogen stores twice the energy as batteries and dispenses at rates on par with gasoline, enabling a zero emissions solution with little compromise in driver behavior

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Fuel Cell

Hydrogen storage

Battery

Electric motor and Power controls

https://news.utexas.edu/2017/09/19/hydrogen-may-be-the-answer-to-evs-energy-problems

Hydrogen Fuel Cell Delivery Van

•  Sponsor: Department of Energy, California Energy Commission, South Coast Air Quality Management District

•  Partners: Center for Transportation and the Environment, Unique Electric Solutions, Valence Technologies, Hydrogenics, United Parcel Service

•  Objective: Develop and demonstrate a hydrogen fuel cell delivery van

•  Goal: Deploy 16 zero emissions fuel cell delivery vans in California to accelerate commercialization of medium-duty hydrogen trucks

•  How: Convert a 2007 diesel van to a hydrogen-electric hybrid. Prototype being developed at CEM with tech transfer to UES for Phase 2 vehicles.

•  Accomplishments: Nearing completion of prototype vehicle. Vehicle displayed at the Alternative Clean Transportation EXPO and was highlighted in Game Changers episode on Longhorn Network.

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Hydrogen Fuel Cell Delivery Van •  Teamed with electric vehicle industry

partner to retrofit late model diesel vans •  Includes the use of UT students hired by

EV partner for the prototype build at CEM

•  CEM lead vehicle design, including powertrain modeling, to define optimal fuel cell and battery energy storage •  Key finding was that “stock” duty cycles

did not accurately reflect real world duty cycles

•  CEM also leading hydrogen systems integration and support

•  Prototype to be finalized in early 2018 followed by a demonstration phase before moving into Phase 2 for an additional 16 vehicles

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http://ieeexplore.ieee.org/document/7993321/

Other Areas of Hydrogen Research

•  Conformable Hydrogen Storage •  DOE incubator project with High

Energy Coil Reservoir Inc •  Identify low permeable liner for

high pressure vessel

•  Photocatalytic Hydrogen Reformer •  Early partnership with Syzygy •  Plans to build prototype reactor

through NSF or DOE SBIR programs

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Upcoming Work and Goals

•  Complete existing projects and expand or move on to Phase 2 •  Paratransit – team goal to implement technology in more demonstrations and

look for a commercialization entity •  BEPS – team would like to see FTA fund a real world demonstration and

implement the system onboard on transit bus in service •  Hydrogen Delivery Van – complete prototype and move into Phase 2

•  Expand opportunities within the University •  Joined NSF I/UCRC group in 2017 focused on efficient and sustainable

transportation •  Developing relationships with professors focused on vehicle technologies

•  Continue looking for grant opportunities

•  Expand research within industry •  Your help is appreciated!

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