Tony Markel
National Renewable Energy Laboratory
53Publications
7H-index
1,962Citations
Publications 53
Newest
Published on Mar 1, 2019in IEEE Transactions on Power Systems 5.25
Jiucai Zhang8
Estimated H-index: 8
(National Renewable Energy Laboratory),
Jennie Jorgenson2
Estimated H-index: 2
(National Renewable Energy Laboratory)
+ 1 AuthorsKevin Walkowicz4
Estimated H-index: 4
(National Renewable Energy Laboratory)
Managed charging of electric vehicle (EV) loads has the potential to use renewable energy more effectively, shave peak demand, and fill demand valleys while serving transportation needs. However, the potential value to the grid from managed charging has not been fully quantified. This paper adopts the tools used in the National Renewable Energy Laboratory's California Low Carbon Grid Study to quantify value to the grid from managed charging by using three levels of managed loads for 13 TW·h of a...
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Published on Oct 1, 2016
Andrew Meintz4
Estimated H-index: 4
(National Renewable Energy Laboratory),
Robert Prohaska2
Estimated H-index: 2
(National Renewable Energy Laboratory)
+ 3 AuthorsKenneth Kelly10
Estimated H-index: 10
(National Renewable Energy Laboratory)
System right-sizing is critical to implementation of wireless power transfer (WPT) for electric vehicles. This study will analyze potential WPT scenarios for the electrification of shuttle buses at Zion National Park utilizing a modelling tool developed by the National Renewable Energy Laboratory called WPTSim. This tool uses second-by-second speed, location, and road grade data from the conventional shuttles in operation to simulate the incorporation of WPT at fine granularity. Vehicle power an...
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Published on Jun 1, 2016
Kate Doubleday1
Estimated H-index: 1
(National Renewable Energy Laboratory),
Andrew Meintz4
Estimated H-index: 4
(National Renewable Energy Laboratory),
Tony Markel7
Estimated H-index: 7
(National Renewable Energy Laboratory)
System right-sizing is critical to implementation of in-motion wireless power transfer (WPT) for electric vehicles. This study introduces a modeling tool, WPTSim, which uses one-second speed, location, and road grade data from an on-demand employee shuttle in operation to simulate the incorporation of WPT at fine granularity. Vehicle power and state of charge are simulated over the drive cycle to evaluate potential system designs. The required battery capacity is determined based on the rated po...
1 Citations Source Cite
Published on Jun 24, 2016in World Electric Vehicle Journal
Jiucai Zhang8
Estimated H-index: 8
,
Tony Markel7
Estimated H-index: 7
The effectiveness of future time of use (TOU) rates to enable managed charging depends on the vehicle’s flexibility and the benefits to owners. This paper adopts opportunity, delayed, and smart charging methods to quantify these impacts, flexibilities, and benefits. Simulation results show that delayed and smart charging methods can shift most charging events to lower TOU rate periods without compromising the charged energy and individual driver mobility needs.
1 Citations Source Cite
Published on Jun 1, 2014in IEEE Electrification Magazine
Chris Gearhart1
Estimated H-index: 1
(National Renewable Energy Laboratory),
Jeff Gonder2
Estimated H-index: 2
(National Renewable Energy Laboratory),
Tony Markel7
Estimated H-index: 7
(National Renewable Energy Laboratory)
Drivers across the nation are powering up at electric charging stations, and gas-fueled cars are getting an average of 16% more miles to the gallon than they did just five years ago. However, as the world's population continues to grow, transportation demands and petroleum consumption steadily increase. A 21st-century transportation system not only needs vehicle technology capable of meeting fuel economy goals of 54.5 mi/gal, a truly sustainable transportation future will rely on the widespread ...
2 Citations Source Cite
Published on Mar 1, 2012
Tony Markel7
Estimated H-index: 7
(National Renewable Energy Laboratory),
Mike Kuss1
Estimated H-index: 1
(National Renewable Energy Laboratory)
+ 5 AuthorsRichard Wilk3
Estimated H-index: 3
(Union College)
The future growth of electrified transportation could be enhanced through interaction with smart grid system architectures. This paper summarizes current literature regarding plug-in electric vehicle — renewables integration and highlights areas of need to implement such integration at a multi-utility scale. Future smart grid implementations hold the key to transferring information and control parameters between distributed and centralized decision agents. The discussion highlights the opportuni...
4 Citations Source Cite
Published on Sep 1, 2010
21 Citations Source Cite
Published on Sep 1, 2010
Matthew Earleywine3
Estimated H-index: 3
(National Renewable Energy Laboratory),
Jeffrey Gonder7
Estimated H-index: 7
(National Renewable Energy Laboratory)
+ 1 AuthorsMatthew Thornton9
Estimated H-index: 9
(National Renewable Energy Laboratory)
As vehicle powertrain efficiency increases through electrification, consumer travel and driving behavior have significantly more influence on the potential fuel consumption of these vehicles. Therefore, it is critical to have a good understanding of in-use or “real world” driving behavior if accurate fuel consumption estimates of electric drive vehicles are to be achieved. Regional travel surveys using Global Positioning System (GPS) equipment have been found to provide an excellent source of in...
14 Citations Source Cite
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