AC 2007-2346: DESIGN OF A RENEWABLE ENERGY BASED POWER SYSTEMFOR A ZERO-ENERGY VISITORS' CENTERSamuel Lakeou, University of the District of Columbia Samuel Lakeou received a BSEE (1974) and a MSEE (1976) from the University of Grenoble (Universite Joseph Fourier), and a PhD in Electrical Engineering from the Ecole Nationale d’Electronique et de Radioelectricite de Grenoble of the National Polytechnic Institute of Grenoble, France, in 1978. He is currently a Professor and Chair of the department of electrical engineering at UDC. He was formerly staff member at the New Products Laboratory of RCA’s Consumer Electronics Division in Indianapolis, IN (1984-86).Esther Ososanya, University of the District
: ‚ Design of Thermal Systems by W. F. Stoecker1 ‚ Analysis and Design of Energy Systems by B. K. Hodge and R. P. Taylor2 ‚ Design of Fluid Thermal Systems by W. S. Janna3 ‚ Elements of Thermal-Fluid System Design by L. C. Burmeister4 ‚ Design and Optimization of Thermal Systems by Y. Jaluria5 ‚ Design Analysis of Thermal Systems by R. F. Boehm6 ‚ Design and Simulation of Thermal Systems by N. V. Suryanarayana, O. Arici and N. Suryanarayana7 ‚ Thermal Design and Optimization by A. Bejan, G. Tsatsaronis, and M. Moran8 The main criteria for choosing the textbook are topical contents, problem sets, workedexamples, and design projects. Comparing these textbooks is difficult as many core topics aresimilar but each
AC 2007-2855: PSCAD SIMULATION IN A POWER ELECTRONICSAPPLICATION COURSELiping Guo, University of Northern Iowa Liping Guo received the B. E. degree in Automatic Control from Beijing Institute of Technology, Beijing, China in 1997, the M. S. and Ph. D. degrees in Electrical & Computer Engineering from Auburn University, AL, USA in 2001 and 2006 respectively. She is currently an Assistant Professor in the Electrical & Information Engineering Technology Program at the Department of Industrial Technology at the University of Northern Iowa. Her research and teaching interests are mainly in the area of power electronics, embedded systems and automatic control.Recayi "Reg" Pecen, University
has only been one knownshock incident and that occurred in 1989 before all of the authors, except Robertson, were on thefaculty and staff. Part of this success is attributed to devoting the first laboratory session eachsemester to electrical safety. Using a presentation developed by author DeWitt, the students areshown both real and dramatized electrical accidents, and aspects of electrical hazards and safetyare discussed in detail. Despite the emphasis on safety, however, there have been a number ofarcing incidents (probably once every three semesters on average) during the years. In Figure 1,there are two circles marked “a” and “b,” which resulted from energized leads contacting thegrounded cabinet. Close-ups of these are shown in Figure 3
versions of the studentclicker units. The left one is the version 1.0clicker. As can be seen in the figure, there arealphanumeric keys. The students can respond tomultiple-choice questions or to numericalquestions. The version 1 clicker has two LEDs(the two white dots above the A/1 key) thatindicate when the device is connected andsending. One issue that students complainedabout with these clickers was that they could hitthe wrong key and unknowingly send a wronganswer. That problem was addressed with theversion 2.0 clicker, shown at the right side ofFigure 2. This version includes an LCD display.When the student makes a choice (A, B, C or anumber like 132.7, depending on the question), Figure 1
: Page 12.935.6 FR D L T Fd α Vb B β A φ VR V∞ Figure 3: Aerodynamic Forces on Turbine BladeThis figure represents a top view of a cross section of a blade with the chord given by the line A-B, and with the axis of rotation being in the wind
to computers,databases and necessary instrumentation. Perhaps the most important requirements of arenewable energy conversion laboratory are the following: a) comprehensive in scope butuncompromising in meeting educational needs; b) practical in emphasis and relevant toindustry; c) attractive to students and able to enhance their experiences in energyconversion; and d) flexible and modular in structure.2. System Configurations and OptimizationA single energy source system, e.g., a standalone solar energy system, or wind generatorcannot provide a continuous source of energy due to low availability during the no-sunperiod or lack of adequate wind. This implies that in order to achieve the high-energyavailability required in some applications
. Page 12.330.19Appendix B: System sizing and number of systems calculationsDiesel GeneratorSystem Sizing and Model SelectionAs a general rule, the exhaust temperature at the inlet and exit of the exhaust heat exchangershould be at least 10 degrees Celsius higher than the corresponding inlet and exit flows of thewater of the heat exchanger. In 1a (where the upper flow is the exhaust and the lower flow is thewater), this rule is illustrated. Figure 1a - Exhaust Heat ExchangerBased on a steam absorption chiller (which requires steam at 160 degrees Celsius and returnswater at 100 degrees Celsius), the exhaust exiting the heat exchanger must be at least 110degrees Celsius18. To size the engine, the exhaust temperature
tutorial. Quick Test 2: Motor Model Circuit Calculations These variables are defined so that the Mathcad units system will work with the motor equations. They are used throughout the book. rpm := 1 pole := 1 Ω := ohm A three phase, 10 hp, 60 Hz, six pole, wye connected 240V induction motor is modeled in Figure 2. It has the following circuit parameters: R1 := 0.294 ⋅ Ω X1 := 0.453 ⋅ Ω f := 60 ⋅ Hz R2 := 0.139 ⋅ Ω X2 := 0.189 ⋅ Ω Xm := 12.79 ⋅ Ω Using the method described above find: a.) the motor stator current magnitude and phase shift b.) the rotor current when the machine has a shaft speed of 1176
AC 2007-1995: ENHANCING LIFELONG LEARNING AND COMMUNICATIONABILITIES THROUGH A UNIQUE SERIES OF PROJECTS INTHERMODYNAMICSMargaret Bailey, Rochester Institute of Technology MARGARET BAILEY, registered professional engineer, is the Kate Gleason Chair and Associate Professor in Mechanical Engineering at RIT. She earned her BSE at Pennsylvania State University in 1988 and her Ph.D. at University of Colorado at Boulder in 1998. She conducts research with students using advanced thermodynamic analyses and neural network modeling applied to various, energy-intensive, complex mechanical systems. Dr. Bailey serves in numerous leadership roles within her college, including Executive Director of RIT’s Women
Page 12.454.2undergraduate and graduate power engineering students were re-designed and adapted foroutreach education. An iterative design procedure was employed with the active involvement ofand feedback from a non-engineer and a high school student. The design process yielded notabledifferences from the original experiments designed for power engineers. Specifically, thefollowing new educational tasks were accomplished: 1. development of additional safety hardware, 2. re-definition of educational objectives, 3. iterative experiment design process, including: a. design of assessment surveys, b. design of new pedagogical material, i.e. laboratory manuals, c. development of new laboratory activities to be
AC 2007-1213: A MICROCONTROLLER-BASED SOLAR PANEL TRACKINGSYSTEMRobert Weissbach, Pennsylvania State University-Erie Robert Weissbach is an associate professor of engineering in the Electrical Engineering Technology department at Penn State Erie, the Behrend College, where he is currently the program chair. His research interests are in power electronics, power systems and multidisciplinary education.Isaac Aunkst, General Dynamics Corporation Isaac Aunkst received his Bachelor's degree in Electrical Engineering Technology from Penn State Erie, The Behrend College in 2006. Upon graduation he worked for GE Transportation Systems on locomotive electrical and instrumentation systems. He has
AC 2007-455: A STUDENT-CENTERED SOLAR PHOTOVOLTAICINSTALLATION PROJECTArthur Haman, University of Detroit Mercy In his fifty years at the University Arthur C. Haman has progressed through the academic ranks to his current position of Professor of Mechanical Engineering and Associate Dean for Operations. His industrial experience was acquired as a Structures and Armaments engineer at Northrup Aviation and as an engineer in the Scientific Laboratory of the Ford Motor Company. He has also held visiting professorships at what was Carnegie Institute of Technology and Dartmouth College. His current interests are in thermodynamics and internal combustion engines.Robert Ross, University of Detroit Mercy
AC 2007-2153: DESIGN AND CONSTRUCTION OF A LAB-SCALE GROUNDSOURCE HEAT PUMPJorge Alvarado, Texas A&M University Dr. Jorge Alvarado is an assistant professor in the Department of Engineering Technology and Industrial Distribution at Texas A&M University. He teaches courses in the areas of thermal sciences, fluid mechanics and fluid power. Dr. Alvarado’s research interests are in the areas of nanotechnology, micro-scale heat transfer, electronic cooling, phase change materials, solid and liquid desiccant regeneration, energy conservation and use of renewable energy in buildings. Page
AC 2007-1330: BUILDING A MODERN POWER ELECTRONICS AND ELECTRICMACHINES LABORATORYKe Chen, Cleveland State University Ke Chen received BS degree from Tsinghua University, Beijing, China. He is currently a master student in Electrical and Computer Engineering Department at Cleveland State University.Ana Stankovic, Cleveland State University Dr. Ana V. Stankovic received BS, MS and PhD degrees from the University of Belgrade, Serbia and University of Wisconsin-Madison. She is currently an Associate Professor in Electrical and Computer Engineering Department at Cleveland State University. Her expertise is power electronics and electric machines and drives
AC 2007-1286: PLANNING A SMALL-SCALE WIND-ELECTRIC SYSTEM INEAST-CENTRAL IOWAMichael E. Hay, University of Northern Iowa Michael Hay completed his masters degree in Industrial Technology at the University of Northern Iowa. Mr. Hay holds a BT in Industrial Technology/Mechanical Design from the University of Northern Iowa and an MA in Industrial Technology from the University of Northern Iowa. Mr. Hay has over 25 years of experience in various Engineering positions and is listed on six US patents. His graduate research was in planning small-scale wind-electric systems. He has worked on several other renewable energy and electric vehicle projects as well.Recayi "Reg" Pecen, University of
AC 2007-3098: UNDERGRADUATE SENIOR RESEARCH PROJECT TODEVELOP A COMPUTER-CONTROLLED POWER SUPPLY FOR LEDSRichard Smith, California State Polytechnic University-Pomona R. Frank Smith received his BSEE from New Mexico State University in 1965, MBA from Pepperdine University in 1974 and MSEE from Cal Poly Pomona in 1993. He has over 30 years industrial experience.Richard Cockrum, California State Polytechnic University Pomona Richard Cockrum received his BSEE and ME from California State Polytechnic Univesity in 1973 and 1975.Phyllis Nelson, California State Polytechnic University-Pomona Dr. Phyllis Nelson received her BSEE from Cal Poly University in 1977, her MS from California
AC 2007-2254: ENERGY SCAVENGING FOR WIRELESS SENSOR NODES WITHA FOCUS ON ROTATION TO ELECTRICITY CONVERSIONFaruk Yildiz, University of Northern IowaJin Zhu, University of Northern IowaRecayi "Reg" Pecen, University of Northern IowaLiping Guo, University of Northern Iowa Page 12.613.1© American Society for Engineering Education, 2007 Energy Scavenging for Wireless Sensor Nodes with a Focus on Rotation to Electricity ConversionIntroductionToday, sustaining the power requirement for autonomous wireless sensor network is animportant issue. In the past, energy storage has improved significantly. However, this progresshas not been able to keep up with the
asynchronous squirrel-cage induction generator directly connected to the grid via a transformer. Since the squirrel-cage induction generator always draws reactive power from the grid, this configuration uses a capacitor bank for reactive power compensation. Type B: Limited variable speed wind turbine. This one uses a wound rotor generator with variable generator rotor resistance and pitch control, which allows for a speed range of up to 10% above the synchronous speed. Type C: Variable speed wind turbine with a doubly fed induction generator (DFIG) and pitch control. This concept allows a wider range of dynamic speed control compared to Type B, depending on the size of the frequency converter. Type D: Variable speed and
boxes providedon the program screen for that purpose. Additionally, there are two “calculate” buttons to startthe program instead of just one. The first “calculate” button is provided for steady stateproblems and the second one for transient problems. The input required is 1.) Rectangle height and width. 2.) Thermal conductivity. 3.) Volumetric heat capacity. 4.) Initial temperature for transient cases. 5.) Designation as to the type of boundary condition on each of the four sides: a.) Prescribed Temperature. b.) Prescribed Heat Flux. c.) Convective Condition. 6.) Specification of the magnitude of the boundary condition. a.) Prescribed temperature for prescribed
and how it was to be erected on the roof. Severalsafety training sessions were also undertaken to assure that everyone understood the safe accessand egress from the roof of the building, to assure that everyone followed campus safety rules,and how to move and work on the roof. Only students who had been through the safety trainingwere permitted access to the roof and participate in the installation. Page 12.1563.6 System Wiring Diagram *Note: A) Negative DC inputs to other five Inverters B
values)available and knowing that the steam discharges to atmospheric pressure at the condenser, atleast four different flow models can be used to calculate the steam flow rate. In increasing orderof sophistication they are: a. Model as incompressible flow in a pipe, using steam density determined from turbine exhaust conditions b. Model as incompressible pipe flow, but account for compressibility by using steam density averaged between tube inlet (turbine exhaust) and tube exhaust conditions. This requires using the energy equation to determine the steam exhaust temperature, use of the steam tables, and a few cycles of iteration. c. Model as compressible, adiabatic, frictional constant area flow (Fanno flow); treat
); agglomerates and aggregates of nanometer-diameter particles, where Page 12.246.4nanostructure-based functionality is retained; aerosolized liquid suspensions ofnanomaterials; and the attrition (or comminution) of nanomaterial composites throughvarious mechanisms1.Figure 2. Examples of engineered nanomaterials likely to be of concern to human health: (a)Unbound nanometer-diameter particles (in air or liquids) (b) Agglomerates of nanometer-diameter particles (in powders, air, and liquids) (c) Aerosols of nanometer-structure particlesuspensions, solutions, or slurries (d) Particles released while working with or usingnanostructured materials, through
, furnaces, motors, lighting, HVAC, compressed gases,electrical energy management, insulation use and design, waste reduction, performance ofbuilding envelopes, alternative energy sources, energy policy and codes, economic analysis,energy auditing, and national energy security and reliability. In essence, this learning-through-doing approach exemplifies a number of contemporary learning theories, including anchoredinstruction, case-based reasoning, and problem-based learning. Students in the course will alsobe exposed to the Missouri IAC activities through industrial visits, seminars and presentations. a b
the high voltage insulation used in the power devices (cables andmachines) installed on the ship. Special emphasis was shown towards the aging of the insulationwhere the impact of the ship environment (humidity, high temperature) is very important. (a) (b)Figure 4. Lightning strokes to ship model: a) Lightning stroke to the lightning protection rod b) Lightning stroke to the antenna y y Icenter I center a0 (a0 , D) a0 (a0 , D) h
waveform excitation at different temperature (a) (b)Figure 9: Partial discharge pattern of MW 35C AWG 14 round conductor at 750 V ac, 20°C, sampled after 100 and 1000 hrs of accelerated degradation, a) and b), respectively.Electrical Degradation of High Voltage Power Ship Cables Energized by SwitchingImpulsesThe power cables installed on the shipboard are frequently subjected to switching impulsesbecause there are a large amount of capacitors installed in the system. The switching surges will Page 12.1276.11be generated during the operation of switch S3, Figure
Energy Program3 provides some of the most lucrative rebatesfor renewable energy system installations in the nation, and this clinic experience allowedengineering students to directly participate in a growing renewable energy market while learningmore about the electrical design of PV systems. In order to assure that their PV systems wouldbe economically feasible and well designed, the City of Ocean City (OC) and the OC Board ofEducation hired Integrated Systems (a consulting engineering group) to determine appropriatedesigns and plans for each of the twenty buildings they were considering. The feasibility studydetermined that ten buildings were good candidates for the PV systems. The consultingcompany (acting as an industry affiliate to the
spring 2006, a different PV-panel was selected for trial use in the FYS, a Kyocera Mini-module that comes wired with two sets of leads similar to our custom-made modules (9.9 Voc or19.8 Voc, 1.12 Wp). This panel was chosen because it is very rugged, utilizing single-crystallinecells encapsulated in acrylic with built-in mounting holes in the corners. Approximate cost was$18 per module but is now $23 per module.This paper describes the current FYS course, with emphasis on the experimentation, analysis,and modeling of the current system using the Kyocera Mini-modules. The different sections willaddress: a. Course overview b. Use of experimental results for the PV panel and DC motor to define the torque/speed characteristic of the combined
global market for renewable energy is already dramaticallyincreasing. In 2006 its turnover was US $38 B, 26% more than in the previous year and this trendis expected to continue3.A dual energy crisis strategy of conservation or maximizing efficiency and vigorousdevelopment of alternative energy sources is proposed. The role of the Arizona State Universityas a New American University in this regard is the one of a bold leadership and relentless pursuitto promote and establish new energy sources.The mandate of the newly established Alternative Energy program at Arizona State University atthe Polytechnic campus is to strategically develop electronics engineering cadre capable ofmeeting the demands of the new energy economy that will rely on energy
-Nagy, Cs., Taylor, S., Smith, J. and Atkinson, C., “The development of a fourth generation hybrid electric vehicle at West Virginia University,” SAE paper 2001-01-0682, 2001.10. Adcock, J., Allen, B., Cleary, R., Dobbins, C. and etc., “Design and construction of the University of Tennessee, Knoxville FutureTruck 2000/2001 parallel hybrid vehicle,” SAE paper 2002-01-1213, 2002.11. Parten, M., Maxwell, T. and Jones, J., “Advanced vehicle research in a multidisciplinary project laboratory,” Proceedings of American Society for Engineering Education (ASEE) Annual Conference and exposition Section 3626, 1999.12. Talbert, J., Wicks, F. and Wilk, R., “Evalusting the benefits of Hybrid Electric Vehicles concepts,” Proceedings