This paper explores research into hydraulic hybrids that span a wide range of applications from heavy-duty vehicles, such as city buses, to small passenger vehicles. This case study also highlights the importance of having a well-designed energy management strategy if one is to maximize benefit of the hybrid powertrain. There is potential for hydraulic hybrid vehicles to offer a cost-effective solution to the need for increased efficiency in transportation systems. The high-power density of fluid power makes it a natural choice for energy storage in urban driving environments where there are frequent starts/stops and large acceleration/braking power demands. Because the opportunities and challenges of fluid power are different than those of electrical power, unique control strategies are needed and a summary of common energy management strategies (EMS) design methods for hydraulic hybrids has been presented.
Enery management in Mobile Hydraulics
Andrew Alleyne received his B.S.E. from Princeton University in 1989 in Mechanical and Aerospace Engineering and his M.S. and Ph.D. degrees in Mechanical Engineering in 1992 and 1994, respectively, from the University of California at Berkeley. He joined the University of Illinois at Urbana-Champaign in 1994 where he currently holds the Ralph M. and Catherine V. Fisher Professorship in the College of Engineering. He is the recipient of the 2008 ASME Gustus L. Larson Memorial Award and is also a Fellow of ASME. His research interests are a mix of theory and implementation with a broad application focus.
Timothy Deppen completed the combined B.S./M.S. program in the Mechanical Science and Engineering department at the University of Illinois at Urbana-Champaign in 2009. He received the Mechanical Science and Engineering Outstanding Scholar Fellowship in 2008. In the summer of 2012 he was selected to participate in the Naval Research Enterprise Internship Program. Currently, he is expected to complete his doctoral program as part of the Alleyne Research Group at the University of Illinois at Urbana-Champaign in May 2013. His research interests include energy management, model predictive control, optimal control, and modeling of multi-domain energy systems.
Jonathan Meyer graduated with high honors from the Milwaukee School of Engineering with a Bachelor of Science degree in mechanical engineering and a minor in mathematics in May 2006. He immediately began to pursue his doctorate in mechanical engineering at the University of Minnesota and is expected to complete his degree in summer 2013. He is also an adjunct faculty member at the University of St. Thomas in St. Paul, MN, teaching mechanical engineering courses and labs. His research interests include energy management, stochastic optimal control, and modeling fluid power systems for mobile applications.
Alleyne, A., Deppen, T., Meyer, J., and Stelson, K. (June 1, 2013). "Enery management in Mobile Hydraulics." ASME. Mechanical Engineering. June 2013; 135(06): S4–S6. https://doi.org/10.1115/1.2013-JUN-5
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