Keith Wipke

The 'Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation Project,' also known as the National Fuel Cell Electric Vehicle Learning Demonstration, is a U.S. Department of Energy (DOE) project started in 2004 and concluded in late 2011. The purpose of this project was to conduct an integrated field validation that simultaneously...

This powerpoint presentation discusses its objectives: real world operation data from the field and state-of-the-art lab; collection; analysis for independent technology validation; collaboration with industry and end users operating stationary fuel cell systems and reporting on technology status, progress and technical challenges. The approach and...

This presentation is about the Early Fuel Cell Market Deployments: ARRA and Combined (IAA, DLA, ARRA). November 2011 Composite Data Products - Deployment November 30, 2011.

This presentation from the U.S. Department of Energy's National Renewable Energy Laboratory includes all the composite data products produced to date (with updates through January 18, 2012) as part of the National Fuel Cell Electric Vehicle (FCEV) Learning Demonstration.

Conference paper presented at the 2008 National Hydrogen Association Meeting that describes the spring, 2008 results of the Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation Project.

This technical presentation describes all composite data products: national FCEV learning demonstration with updates through October 5, 2011

This chapter presents the National Fuel Cell Vehicle Learning Demonstration Project of the U.S. Department of Energy which seeks to validate vehicle and infrastructure systems using hydrogen as a transportation fuel for light-duty vehicles. The role of the National Renewable Energy Laboratory (NREL) in this project is to generate the maximum value...

The “Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation Project”, also known as the Fuel Cell Vehicle and Infrastructure Learning Demonstration, is a 5-year US Department of Energy (DOE) project started in 2004. The purpose of this project is to conduct an integrated field validation that simultaneously examines the performan...

The National Fuel Cell Electric Vehicle Learning Demonstration is a U.S. Department of Energy (DOE) project that started in 2004. The purpose of this project is to conduct an integrated field validation that simultaneously examines the performance of fuel cell vehicles and the supporting hydrogen infrastructure. The DOE's National Renewable Energy...

A PowerPoint presentation given as part of the 2005 Hydrogen Program Review, May 24, 2005, in Washington, D.C.

Graphs of composite data products produced by DOE's Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation project through September 2010.

The "Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation Project," also known as the Fuel Cell Vehicle and Infrastructure Learning Demonstration, is a 5-year U.S. Department of Energy (DOE) project started in 2004. The purpose of this project is to conduct an integrated field validation that simultaneously examines the perform...

The 'Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation Project,' is a five-year U.S. Department of Energy (DOE) project started in 2004. The purpose of this project is to conduct an integrated field validation that examines the performance of fuel cell vehicles and the supporting hydrogen infrastructure. NREL has analyzed da...

Conference paper prepared for the FuelCell2008 conference describing the results of the DOE Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation Project.

The objective of the U.S. Department of Energy's "Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation Project" is to conduct an integrated field validation that simultaneously examines the performance of fuel cell vehicles and the supporting hydrogen infrastructure. This paper provides initial results in the form of composite...

This presentation summarizes controlled hydrogen fleet & infrastructure analysis undertaken for the DOE Fuel Cell Technologies Program.

This presentation, which provides information on the U.S. Department of Energy's Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation Project, was given at EVS-21 in April 2005.;

Many proton exchange membrane (PEM) fuel cell models have been reported in publications and some are available commercially. This paper helps users match their modeling needs with specific fuel cell models. The paper has three parts. First, it describes the model selection criteria for choosing a fuel cell model. Second, it applies these criteria t...

This paper summarizes a methodology for determining desirable characteristics and requirements of the energy storage system for fuel cell hybrid vehicles. The purpose of this work was to provide supporting analysis for the FreedomCAR Technical Teams in defining energy storage requirements for fuel cell vehicles. The power and energy requirements re...

Hydrogen fuel cell vehicles (FCVs) appear to be a promising solution for the future of clean and efficient personal transportation. Issues of how to generate the hydrogen and then store it on-board to provide satisfactorydriving range must still be resolved before they can compete with conventional vehicles. Alternatively, FCVs could obtain hydroge...

This paper summarizes a methodology for determining desirable characteristics and requirements of the energy storage system for fuel cell hybrid vehicles. The purpose of this work was to provide supporting analysis for the FreedomCAR Technical Teams in defining energy storage requirements for fuel cell vehicles. The power and energy requirements re...

NREL has contracted Vulcanworks to provide an Advanced Engineering Environment (AEE) configured for development of automotive vehicles powered by fuel cell/fuel processor systems. Nuvera Fuel Cells, Inc, provided information for development of relationships and mathematical models of fuel cell and fuel processors. The Vulcanworks AEE product is an...

Low-temperature operation of a Proton Exchange Membrane (PEM) fuel cell system requires humidification of the membrane. The amount of water produced electrochemically within the fuel cell system is directly related to the system power output. In a vehicular application where the power output may vary substantially over time, it is critical that wat...

Previous work examined degree of hybridization on the fuel economy of a hybrid electric sport utility vehicle. It was observed that not only was the vehicle control strategy important, but that its definition should be coupled with the component sizing process. Both degree of hybridization and the energy management strategy have been optimized simu...

This paper provides an overview of Advanced Vehicle Simulator (ADVISOR)—the US Department of Energy’s (DOE’s) ADVISOR written in the MATLAB/Simulink environment and developed by the National Renewable Energy Laboratory. ADVISOR provides the vehicle engineering community with an easy-to-use, flexible, yet robust and supported analysis package for ad...

The impacts of fuel cell system power response capability on optimal hybrid and neat fuel cell vehicle configurations have been explored. Vehicle system optimization was performed with the goal of maximizing fuel economy over a drive cycle. Optimal hybrid vehicle design scenarios were derived for fuel cell systems with 10 to 90% power transient res...

An ADVISOR model of a PNGV-class (80 mpg) vehicle with a fuel cell / battery hybrid electric drivetrain is developed using validated component models. The vehicle mass, electric traction drive, and total net power available from fuel cells plus batteries are held fixed. Results are presented for a range of fuel cell size from zero (pure battery EV)...

System optimization is an extremely important step in the vehicle design process. Recently the National Renewable Energy Laboratory (NREL), both internally and through its subcontractors, has been actively developing and applying optimization tools to vehicle systems analysis problems associated with hybrid electric vehicles. We are applying both l...

Parallel- and series-configured hybrid vehicles likely feasible in next decade are defined and evaluated using NREL's flexible ADvanced VehIcle SimulatOR, ADVISOR. Fuel economies of these two diesel-powered hybrid vehicles are compared to a comparable-technology diesel-powered internal-combustion-engine vehicle. Sensitivities of these fuel economie...

A hybrid electric vehicle (HEV) is a complex system integrating interactive subsystems of disparate degrees of complexity. The simulation of an HEV thus poses a challenge. An accurate simulation requires highly accurate models of each subsystem. Without these, the system has a poor overall performance. Typically, modelling problems are not amenable...

An ADVISOR model of a large sport utility vehicle with a fuel cell / battery hybrid electric drivetrain is developed using validated component models. The vehicle mass, electric traction drive, and total net power available from fuel cells plus batteries are held fixed. Results are presented for a range of fuel cell size from zero (pure battery EV)...

The overall system efficiency of a hybrid electric vehicle is highly dependent on the energy management strategy employed. In this paper, an electric utility grid-connected energy management strategy for a parallel hybrid electric vehicle is presented. ADVISOR was used as a modeling tool to determine the appropriate size of the hybrid components an...

The Partnership for a New Generation of Vehicles (PNGV) is a joint project of the “big three” US automakers and seven US government agencies. The goal of the partnership is to develop a mid-sized car with a fuel economy of 3 liter/100km. The US Department of Energy is supporting the development of two computer codes for modeling future automobiles....

The modeling of the energy storage system (ESS) of a Hybrid Electric Vehicle (HEV) poses a considerable challenge. The problem is not amenable to physical modeling without simplifying assumptions that compromise the accuracy of such models. An alternative is to build conventional empirical models. Such models, however, are time-consuming to build a...

This paper describes the design and construction of a fuel cell hybrid electric vehicle based on the conversion of a five passenger production sedan. The vehicle uses a relatively small fuel cell stack to provide average power demands, and a battery pack to provide peak power demands for varied driving conditions. A model of this vehicle was develo...

Hybrid electric vehicles (HEV's) offer additional flexibility to enhance the fuel economy and emissions of vehicles. The Real-Time Control Strategy (RTCS) presented here optimizes efficiency and emissions of a parallel configuration HEV. In order to determine the ideal operating point of the vehicle's engine and motor, the control strategy consider...

ADVISOR 2.1 is the latest version of the National Renewable Energy Laboratory's advanced vehicle simulator. It was first developed in 1994 to support the US Department of Energy hybrid propulsion system program and is designed to be accurate, fast, flexible, easily sharable, and easy to use. This paper presents the model, focusing on its combinatio...

ADVISOR 2.1 is the latest version of the National Renewable Energy Laboratory's advanced vehicle simulator. It was first developed in 1994 to support the U.S. Department of Energy hybrid propulsion system program, and is designed to be accurate, fast, flexible, easily sharable, and easy to use. This paper presents the model, focusing on its combina...

The National Renewable Energy Laboratory has recently publicly released its second-generation advanced vehicle simulator called ADVISOR 2.0. This software program was initially developed four years ago, and after several years of in-house usage and evolution, this powerful tool is now available to the public through a new vehicle systems analysis W...

As a partial solution to the problem of increasing foreign petroleum imports, urban congestion, and air pollution from personal automobiles, researchers at the National Renewable Energy Laboratory in Golden, Colorado, have successfully demonstrated a transportation concept called Transit-On-Demand (TOD). TOD uses the global positioning system (GPS)...

The United States Department of Energy (DOE) procured new data collection equipment for the 42 vehicles registered to compete in the 1994 Hybrid Electric Vehicle (HEV) Challenge, increasing the amount of information gathered from the worlds largest fleet of HEVs. Data were collected through an on-board data storage device and then analyzed to deter...

The use of unglazed transpired solar collectors for desiccant regeneration in a solid desiccant cooling cycle was investigated because these collectors are less expensive than conventional glazed flat-plate collectors. Using computer models, we studied the performance of a desiccant cooling ventilation cycle integrated with either unglazed transpir...

The US Department of Energy sponsored several student engineering competitions in 1993 that provided useful information on electric and hybrid electric vehicles. The electrical energy usage from these competitions has been recorded with a custom-built digital meter installed in every vehicle and used under controlled conditions. When combined with...

The use of unglazed solar collectors for desiccant regeneration in a solid desiccant cooling cycle was investigated because these collectors are lower in cost than conventional glazed flat-plate collectors. Using computer models, the performance of a desiccant cooling ventilation cycle integrated with either unglazed transpired collectors or conven...

The National Learning Demonstration is conducting an integrated field validation to examine the performance of fuel cell vehicles and their supporting hydrogen infrastructure. NREL has now analyzed data from over four years of the six-year project, including 140 vehicles and 20 refueling stations, resulting in over 346,000 vehicle trips across 1,90...

This presentation summarizes Fall 2010 composite data products ARRA material handling equipment.

The data analysis objectives are: (1) Independent assessment of technology, focused on fuel cell system and hydrogen infrastructure:performance, operation, and safety; (2) Leverage data processing and analysis capabilities from the fuel cell vehicle Learning Demonstration project and DoD Forklift Demo; (3) Establish a baseline of real-world fuel ce...

Graphs of composite data products produced by DOE's Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation project through March 2010.

This presentation summarizes U.S. Fuel Cell Electric Vehicle Demonstration Project 2010 Status Update.

The objectives of this report are to: (1) validate Hâ FC vehicles and infrastructure in parallel; (2) identify current status of technology and its evolution; (3) re-focus Hâ research and development; and (4) support technology readiness milestone by 2015.

This presentation discusses U.S. DOE Learning Demonstration Project goals, fuel cell vehicle and H2 station deployment status, and technical highlights of vehicle and infrastructure analysis results and progress.

This presentation discusses the objectives of the U.S. DOE Fuel Cell Electric Vehicle Learning Demonstration Project, describes NREL's technology validation approach, and summarizes key technical results from the project.

This presentation discusses analysis results for American Recovery and Reinvestment Act early market fuel cell deployments and describes the objective of the project and its relevance to the Department of Energy Hydrogen and Fuel Cells Program; NREL's analysis approach; technical accomplishments including publication of a fourth set of composite da...

This presentation is about the Spring 2012 Composite Data Products - Backup Power April 3, 2012.

This presentation is the ARRA MHE Composite Data Products for Data Through 2011 Q4.

This presentation describes an independent assessment of fuel cell durability status and discusses the project's relevance to the Department of Energy Hydrogen and Fuel Cells Program; NREL's analysis approach; the FY12 technical accomplishments including the fourth annual publication of results; and project collaborations and future work.

This presentation is about the Early Fuel Cell Market Deployments: ARRA and Combined (IAA, DLA, ARRA). Quarter 1 2012 Composite Data Products - Deployment March 8, 2012.

This report documents the key results to date from the U.S. DOE Controlled Hydrogen Fleet and Infrastructure Validation and Demonstration project.

Presentation prepared for the 2008 National Hydrogen Association Conference that describes the spring 2008 results for DOE's Fuel Cell Vehicle Learning Demonstration.

This report documents key results from DOE's Controlled Hydrogen Fleet and Infrastructure Validation and Demonstration Project based on data through December 2007.

Graphs of composite data products produced by DOE's Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation project through February 2008.

Paper for the 2005 National Hydrogen Association conference provides an overview of the U.S. Department of Energy's Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation Project.

Graphs of composite data products produced by DOE's Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation project through March 2009.

The objectives of this paper are: (1) validate H FC vehicles and infrastructure in parallel; (2) identify current status and evolution of the technology; (3) objectively assess progress toward technology readiness; and (4) provide feedback to H research and development.

The objective of this evaluation was to independently and objectively verify driving ranges of >400 miles announced by Toyota for its new advanced Fuel Cell Hybrid Vehicle (FCHV-adv) utilizing 70 MPa compressed hydrogen. To accomplish this, participants from both Savannah River National Laboratory (SRNL) and the National Renewable Energy Laboratory...

Graphs of composite data products produced by DOE's Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation project through September 2009.

This presentation provides information about the objectives and partners of the National Fuel Cell Vehicle Learning Demonstration, the status of vehicle and station deployment, and results of vehicle and infrastructure analysis.

This presentation provides status and results for the United States National Hydrogen Fuel Cell Vehicle Learning Demonstration, including project objectives, partners, the National Renewable Energy Laboratory's role in the project and methodology, how to access complete results, and results of vehicle and infrastructure analysis.

Presentation about early fuel cell markets, the National Renewable Energy Laboratory's Hydrogen Secure Data Center and its role in data analysis and demonstrations, and composite data products, and results reported to multiple stakeholders.

This presentation summarizes findings of the fuel cell vehicle learning demonstration of the Fuel Cell Technologies Program.

Graphs of composite data products produced by DOE's early fuel cell market demonstration projects for the second quarter of 2010.

Presentation about ARRA Early Fuel Cell Market Demonstrations, including an overview of the ARRE Fuel Cell Project, the National Renewable Energy Laboratory's data analysis objectives, deployment composite data products, and planned analyses.

Summary of hydrogen and fuel cell demonstration projects, costs and market introduction.

This presentation from the U.S. Department of Energy's National Renewable Energy Laboratory includes the composite data products produced in Winter 2011 as part of the National Fuel Cell Electric Vehicle (FCEV) Learning Demonstration.

This report discusses key results based on data through December 2009 from the U.S. Department of Energy's (DOE) Controlled Hydrogen Fleet and Infrastructure Validation and Demonstration Project, also referred to as the National Fuel Cell Electric Vehicle (FCEV) Learning Demonstration. The report serves to help transfer knowledge and lessons learne...

This presentation summarizes ARRA fuel cell deployment and operation.

This presentation summarizes project goals; vehicle and H2 station deployment status, critical performance compared to targets; highlights of latest vehicle and infrastructure analysis results and progress; learning demo next steps; highlights of partner activities and summary.

Presented at the Japan Hydrogen and Fuel Cell Demonstration Project (JHFC), 1 March 2011, Tokyo, Japan. This presentation summarizes the status of U.S. fuel cell electric vehicles and infrastructure learning demonstration project.

This presentation from the U.S. Department of Energy's National Renewable Energy Laboratory includes the composite data products produced in Spring 2011 as part of the National Fuel Cell Electric Vehicle (FCEV) Learning Demonstration.

This presentation from the U.S. Department of Energy's National Renewable Energy Laboratory includes all the composite data products produced to date (with updates through March 29, 2011) as part of the National Fuel Cell Electric Vehicle (FCEV) Learning Demonstration.

This technical presentation describes Fall 2011 composite data products: national FCEV learning demonstration.

This fact sheet discusses how researchers at the National Renewable Energy Laboratory (NREL) are working to validate hydrogen and fuel cell systems in real-world settings. NREL strives to provide an independent third-party technology assessment that focuses on fuel cell system and hydrogen infrastructure performance, operation, maintenance, and saf...

An advanced vehicle simulator model called ADVISOR has been developed at the National Renewable Energy Laboratory to allow system-level analysis and trade-off studies of advanced vehicles. Because of ADVISOR`s fast execution speed and the open programming environment of MATLAB/Simulink, the simulator is ideally suited for doing parametric studies t...

Summary of DOE's Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation project from initiation through January 2006.

This presentation, which provides information about how hydrogen technology validation is used as a learning demonstration that feeds the research and development process, was given at a National Hydrogen Association meeting in April 2004.

Provides an overview on the use of ADVISOR for modeling plug-in hybrid electric vehicles.

This presentation on NREL's Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation Project was given by Keith Wipke at the ZEV Technology Symposium on September 15, 2006.

This presentation, given by NREL's Keith Wipke at EVS-22, provides an update on the Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation Project.

This presentation by NREL's Keith Wipke at the 2006 Fuel Cell Seminar provides information about the Hydrogen Learning Demonstration Project, with a focus on fuel cell efficiency and durability.