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Performance comparison of different power management control strategies for a hybrid fuel cell/battery vehicle 12

Performance comparison of different power management control...

引用

asme 2014 12th biennial conference on engineering systems design and analysis, ESDA 2014

作者： Abu Mallouh, M. Salah, M. Surgenor, B.W. Abdelhafez, E. Hamdan, A. Hamdan, M. Department of Mechatronics Engineering Hashemite University Zarqa Jordan Department of Mechanical Engineering Queen's University KingstonON Canada Dept of Mechanical Engineering Al-Zaytoonah University of Jordan Amman Jordan

ISBN: (纸本)9780791845837

Power management systems are one of the most important components in modern hybrid vehicles. they are needed to optimize the operation of the hybrid system components. In this paper, a model for a fuel cell/battery vehicle is developed using PSAT and then tested with four power management control strategies utilizing the driving cycle of Amman city, the capital of Jordan. the main components of the hybrid vehicle are a PEM fuel cell, battery, and a brushless dc motor. PEM fuel cells are popular due to their good start up, high power density, and low operating temperature. the role of the battery in a hybrid system is to boost the system power during start-up and transient events in addition to storing the energy recovered from the braking process. the developed hybrid vehicle model is designed and configured so that it matches the power, acceleration, and maximum speed of a midsized vehicle powered by an internal combustion engine. the proposed control strategies are the thermostat strategy, fuel cell optimized strategy, load following strategy and fuzzy logic strategy. All four control strategies are implemented in simulation utilizing PSAT. the simulation results indicate that the best performance in terms of fuel economy is achieved by the load following control strategy. Copyright © 2014 by asme.

关键词： Hybrid vehicles

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Development of a computer vision tracking system for automated 3D reconstruction of concrete bridges 12

引用

asme 2014 12th biennial conference on engineering systems design and analysis, ESDA 2014

作者： Zanoni, Andrea Maninetti, Giacomo Cheli, Federico Garozzo, Marco Department of Mechanical Engineering Politecnico di Milano Milano20156 Italy Sineco S.p.a. Milano20124 Italy

ISBN: (纸本)9780791845851

Concrete bridge inspection is nowadays primarily a slow, subjective, non-comprehensive and costly set of procedures. Automation of the acquisition method is especially desirable for economical and repeatability reasons. Digital data is normally derived from well established non-destructive testing techniques, high resolution cameras and, more recently, by 3D laser scanning. this latter technique has some advantageous aspects in terms of reliability, repeatability, completeness and intuitiveness of the analysis of the resulting 3D reconstruction of the concrete structure. Statical laser scanning is, though, impractical for a variety of different reasons. A possible way of overcoming such difficulties is represented by dynamical measurement, achieved by moving in a prescribed manner the laser scanner during the scanning process. this procedure, on the other hand, requires a reliable tracking system for the laser scanner position and orientation. this work focuses on the development of such system, based primarily on computer vision measurement systems. A compact and lightweight 3D laser scanner has been placed on an automated carrier able to move along a standard inspection by-bridge, and a system of cameras and transducers has been designed to measure the carrier position and orientation based on the assumption of rigid body motion of the by-bridge multi-link arm during inspection operations. Several experimental tests have been performed to assess the viability of the proposed system and to evaluate its performance. Copyright © 2014 by asme.

关键词： Nondestructive examination

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Automobile driving control for a dual power electric vehicle with a hydrogen fuel cell 12

Automobile driving control for a dual power electric vehicle...

引用

asme 2014 12th biennial conference on engineering systems design and analysis, ESDA 2014

作者： Kuo, Keilin Tsao, Chungchen Department of Vehicle Engineering National Taipei University of Technology Taipei10608 Taiwan Department of Mechatronic Engineering Tahua University of Science and Technology Hsinchu30740 Taiwan

ISBN: (纸本)9780791845851

In this study, we adopt a dual power system for extension (DPES) operation by combining the existing power system of an electric vehicle with a hydrogen fuel cell. this was to enhance the durability of the electric vehicle and reduce the inconvenience of battery charging. the lithium battery acts as the primary power source and has real-time monitoring of its state of charge (SOC), while the hydrogen fuel cells act as the auxiliary power supply. the auxiliary power can be used either directly or for charging the lithium battery while the vehicle is in its idle state. the dual power system is coupled with a dualmode motor controller and energy management system. this study aims to apply the dual power system on the electric vehicle using hydrogen fuel cells. We designed a simulation platform for real driving conditions using Labview to send and receive control commands. In this study, we simulated the road cycles of the Economic Commission for Europe (ECE-40), Japanese legislative cycle (JP10) and the World-wide Motorcycle Emissions Test Cycle (WMTC), using Proportional-integral Control (PI) for automatic tracking and employing engineering error analysis to determine the most suitable PI parameter values for the simulated system. the results showed that using a fixed 100 W fuel cell could enhance the operation time up to 21 %, 21 %, and 14 % for the road cycles of the ECE-40, JP10, and WMTC, respectively. Due to the required features of an actual vehicle, we also designed an energy limiting system to manage the driver-controlled electronic throttle by controlling the instantaneous and maximum power output of the motor in order to achieve savings in energy consumption, increase its operation time, protect the system, and enhance its durability. Copyright © 2014 by asme.

关键词： Durability

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Multiobjective pareto-based optimization of pMUT hydrophone with piezoelectric active diaphragm 12

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asme 2014 12th biennial conference on engineering systems design and analysis, ESDA 2014

作者： Shevtsov, Sergey Chang, Shun-Hsyung Stephen Kalinchuk, Valery Zhilyaev, Igor Shevtsova, Maria Department of Mechanical and Aircraft Engineering South Center Russian Academy Rostov on Don Russia Department of Microelectronic Engineering National Kaohsiung Marine University Kaohsiung City Taiwan Mathematical Modeling Department Southern Federal University Rostov on Don Russia

ISBN: (纸本)9780791845851

the design of high-sensitive hydrophones is one of the research interests in underwater acoustics. Due to progress of micro- and nanotechnology the most attention of researchers is attracted by the transducers that use the microelectromechanical system (MEMS) concept. Piezoelectric micro-machined ultrasonic transducers (pMUTs) present a new approach to sound detection and generation that can overcome the shortcomings of conventional transducers. For accurate ultrasound field measurement, small size hydrophones which are smaller than the acoustic wavelength are required for providing an omnidirectional response and avoid spatial averaging. this paper presents some results of multiobjective optimization for membrane-type piezoceramic MEMS based transducers. We investigate the miniaturized membrane-type sensor with perforated holes in the active PZT and intermediate membranes, with the protective plates and a vacuum chamber. An influence of the protective plate elastic and viscous properties, the dimensions and the relative area of the perforated holes on the sensitivity's frequency response of the hydrophone was studied for the broadening and equalizes the operating frequency band. We optimize these key parameters using the Pareto approach with the finite element (FE) model of coupled piezoelectric-acoustic problem. Finally, the set of optimized hydrophone structures and some examples of obtained sensitivity frequency response are demonstrated. Copyright © 2014 by asme.

关键词： Frequency response

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Simulation of combustion in a porous reactor 12

引用

asme 2014 12th biennial conference on engineering systems design and analysis, ESDA 2014

作者： Mohammadi, Arash Benhari, Mona Faculty of Mechanical Engineering K. N. Toosi University of Technology Tehran Iran

ISBN: (纸本)9780791845844

Development of IC engines with low emissions and low fuel consumption causes interest in direct injection engine, especially diesel engines that work with lean mixture. this goal may be achieved with separation of mixture formation and combustion processes, in diesel engines. A practicable way to reach this target is the use of porous medium (PM) inside the combustion chamber. the PM has benefits to enhance the evaporation of droplets in liquid-fuel burners, reduce emissions and minimize instabilities. this paper represents the numerical study of liquid-fuel injection and combustion inside constantvolume chemically inert PM to stabilize lean mixture. 3D numerical results have obtained based on a modified version of KIVA-3V code. Diesel was directly sprayed inside hot and high pressure PM chamber. Complete evaporation and self-ignited was achieved due to the initial temperature of PM. the results in an especial condition have compared with an experimental data in the literature. Effect of injection in cold condition has investigated. Contours of diesel vapor, fluid and solid temperature of PM in a cross section, have shown. Also, effects of pore density on a constant high-porosity PM and mass of spray fuel were studied. the results show considerable reduction in carbon monoxide, nitrogen monoxide and elimination of soot. Copyright © 2014 by asme.

关键词： Porous materials

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Image-based versus signal-based sensors for machine fault detection and isolation 12

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asme 2014 12th biennial conference on engineering systems design and analysis, ESDA 2014

作者： Fernando, Heshan Chauhan, Vedang Surgenor, Brian Department of Mechanical Engineering Queen's University KingstonON Canada

ISBN: (纸本)9780791845851

this paper presents the results of a comparative study that investigated the use of image-based and signal-based sensors for fault detection and fault isolation of visually-cued faults on an automated assembly machine. the machine assembles 8 mm circular parts, from a bulk-supply, onto continuously moving carriers at a rate of over 100 assemblies per minute. Common faults on the machine include part jams and ejected parts that occur at different locations on the machine. Two sensor systems are installed on the machine for detecting and isolating these faults: an image-based system consisting of a single camera and a signal-based sensor system consisting of multiple greyscale sensors and limit switches. the requirements and performance of both systems are compared for detecting six faults on the assembly machine. It is found that both methods are able to effectively detect the faults but they differ greatly in terms of cost, ease of implementation, detection time and fault isolation capability. the conventional signal-based sensors are low in cost, simple to implement and require little computing power, but the installation is intrusive to the machine and readings from multiple sensors are required for faster fault detection and isolation. the more sophisticated image-based system requires an expensive, high-resolution, high-speed camera and significantly more processing power to detect the same faults;however, the system is not intrusive to the machine, fault isolation becomes a simpler problem with video data, and the single camera is able to detect multiple faults in its field of view. Copyright © 2014 by asme.

关键词： High speed cameras

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A new multi-objective evolutionary algorithm for optimizing the aerodynamic design of HAWT rotor 12

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asme 2014 12th biennial conference on engineering systems design and analysis, ESDA 2014

作者： Alfayyadh, Ekhlas M. Bakhy, Sadeq H. Shkara, Yasir M. University of Technology Machines and Equipment Eng. Dept. Baghdad10066 Iraq

ISBN: (纸本)9780791845844

this paper presents a new multi-objective evolutionary algorithm (MOEA) for optimum aerodynamic design of horizontal-axis wind turbines (HAWT). the design problem is set to find the blade shape such that optimizing multiobjective at different airfoil profiles. Combined Blade Element Momentum (BEM) theory and two different algorithms (Genetic (GA) and Enumeration) are used. Flow around subsonic airfoils is analyzed using XFOIL software. WINDMEL III wind turbine is selected to improve its aerodynamic performance with different airfoil profiles technique of National Renewable Energy Laboratory (NREL) family. Employing Genetic Algorithm embodied in Blade Element Momentum theory to calculate power, thrust and starting torque coefficients that are the fitness function. Another method, Enumeration method, is used to enhance evolutionary method results. the optimum solution acquired from combination of Genetic Algorithm and Blade Element Momentum theory of three blades configuration increased power coefficient by (25.8 %) and thrust coefficient by (16.6 %). Enumeration method results increased power coefficient by (13.8 %), while thrust coefficient decreased by (0.2 %) from the original design. In general, the evolutionary method of combined GA and BEM theory with different airfoil profiles technique improved the turbine aerodynamic performance, and the results are in good agreement with other published papers. Copyright © 2014 by asme.

关键词： Horizontal axis wind turbine

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Human powered vehicle design: A challenge for engineering education 12

Human powered vehicle design: A challenge for engineering ed...

引用

asme 2014 12th biennial conference on engineering systems design and analysis, ESDA 2014

作者： Baldissera, Paolo Delprete, Cristiana Politecnico di Torino Corso Duca degli Abruzzi 24 Torino10129 Italy

ISBN: (纸本)9780791845837

Student Team Challenges on specific topics are growing in popularity as efficient ways to stimulate students' independent work, technical and management learning as well as socialization and internationalization. Many competitions are focused on ground vehicles (SAE Formula, Motostudent, Shell Eco Marathon, Solar Challenge), with different focuses on performance, fuel consumption or other depending on the aim of the event. An interesting approach is proposed in the United States by the asme HPV Challenge, which is focused on Human Powered Vehicles. this class of vehicles allows not only to set-up a classical competition in terms of design, innovation, presentation, manufacturing and racing, but also to grow the student awareness about speed-energy relation. An HPV gives to the rider a direct feedback on a "human-scale" about energy quantities involved in personal mobility. the main returns by the use of this specific topic for a student challenge are: better understanding of the sustainable mobility problem, awareness about the potential and the limits of human muscular power, development of technical skills about design and engineering of lightweight and efficient vehicles, stimulation of the HPVs market development (the students are both potential future designers/manufacturers and/or customers), promotion of healthy and engaging physical activities. In this context, while Europe is rich of HPVs amateurs and manufacturers and is the usual location of the WHPVA World Championship, there is a lack of an educational framework involving students and teachers. Starting from the end of ZEV-HPV Erasmus Intensive Program 2011-2013, the proposal of creating a specific HPV challenge for the European students was developed by the authors. In particular, it was evaluated that by integrating the Student Challenge in the WHPVA World Championship as a special "Educational" category, many reciprocal advantages could be obtained: logistic and organizational support from the WHPVA

关键词： Students

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Experimental investigation of a dual fuel diesel engine run on scrubbed biogas using the method of adsorption 12

Experimental investigation of a dual fuel diesel engine run ...

引用

asme 2014 12th biennial conference on engineering systems design and analysis, ESDA 2014

作者： Verma, Vijay S. Bora, Bhaskor J. Sarkar, Achinta Saha, Ujjwal K. Department of Mechanical Engineering Indian Institute of Technology Guwahati Guwahati781039 India

ISBN: (纸本)9780791845844

Global warming and depletion of fossil fuels have compelled the researchers to study the sources of renewable energy. Biogas, one of the most promising alternative renewable biofuel, is produced from anaerobic digestion. It mainly consists of methane and carbon dioxide (CO2) with traces of water vapor, hydrogen sulfide (H2S), siloxanes, hydrocarbons, ammonia, oxygen, carbon monoxide and nitrogen. the presence of high concentration of CO2 in biogas lowers the energy content per unit mass/volume. this limits its utility to only low quality energy applications where as H2S is a highly toxic and corrosive gas. therefore, it is extremely difficult to transport and store biogas. thus, the need emerges for a unified approach for scrubbing, compression and subsequent storage of biogas for wider applications. the current work presents the scrubbing of biogas using the method of adsorption. the quality of the scrubbed biogas studied by gas chromatography is presented. the scrubbed biogas is then tested in a dual fuel diesel engine as a primary fuel to evaluate the performance and emission characteristics of the engine. the data obtained are compared with those of raw biogas run dual fuel diesel engine. Copyright © 2014 by asme.

关键词： Biogas

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thermodynamic analysis of a compressed air energy storage facility exporting compression heat to an external heat load 12

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asme 2014 12th biennial conference on engineering systems design and analysis, ESDA 2014

作者： Safaei, Hossein Aziz, Michael J. School of Engineering and Applied Sciences Harvard University CambridgeMA United States

ISBN: (纸本)9780791845851

Fluctuations of electric load call for flexible generation technologies such as gas turbines. Alternatively, bulk energy storage (BES) facilities can store excess off-peak electricity to generate valuable peaking electricity. Interest in electricity storage has increased in the past decade in anticipation of higher penetration levels of intermittent renewable sources such as wind. Compressed Air Energy Storage (CAES) is one of the most promising BES technologies due to the large amount of energy (hundreds of MWh) that can be economically stored. CAES uses off-peak electricity to compress air into underground reservoirs. Air is combusted and expanded at a later time to regenerate electricity. One of the downsides of CAES is the large energy losses incurred in the form of waste compression heat. Distributed CAES (D-CAES) has been proposed in order to improve the roundtrip efficiency of CAES by utilizing the compression heat for space and water heating. the compressor of D-CAES is located near a heat load (e.g. a shopping mall) and the compression heat is recovered to meet this external load. D-CAES collects fuel credits equal to the negated heating fuel, leading to a higher overall efficiency compared to conventional CAES. We perform a thermodynamic analysis of conventional CAES and D-CAES to compare their heat rate, work ratio (electric energy stored per unit of electric energy regenerated), and exergy efficiency. Copyright © 2014 by asme.

关键词： Compressed air energy storage

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