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Chris Gerada - One of the best experts on this subject based on the ideXlab platform.
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simplified analytical Machine sizing for surface mounted permanent magnet Machines
International Electric Machines and Drives Conference, 2019Co-Authors: Patrick Xie, Ramkuma Ramanatha, Gaurang Vakil, Chris GeradaAbstract:This paper proposes a simplified analytical Machine sizing procedure for a three-phase surface mounted permanent magnet synchronous Machines appropriate for both system level analysis and preliminary Machine Design. For system-level analysis, the proposed method can generate candidate Machine models, be used to check if proposed performance values for a Machine in a system level Design problem are feasible or be integrated into a system-level optimization considering power electronics, passives, and Machine. In Machine Design, the advantage of an analytical process over FEA is its computational efficient nature, capable of quickly generating numerous candidate Designs across a wide search-space. Selected Designs can be further refined using more computational intensive methods such as FEA, CFD, and Machine Design software. Outputs of the sizing procedure include, mass, volume, efficiency, slot and rotor geometry, winding dimensions, stator resistance, stator inductance, magnet flux linkage, air gap width, magnet thickness, and steady state thermal results. The sizing procedure is validated using 2D electromagnetic solver FEMM, and Machine Design software Motor-CAD.
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Design of a stator for a high speed turbo generator with fixed permanent magnet rotor radius and volt ampere constraints
IEEE Transactions on Energy Conversion, 2018Co-Authors: Nuwantha Fernando, Puvan Arumugam, Chris GeradaAbstract:This paper investigates high-speed surface PM Machine Design for portable turbo-generator applications. The rotor radius is fixed to achieve certain optimal characteristics of the magnet retention mechanism. The objective of this paper is to Design and select the stator. The stator Designs are populated by different slot/pole combinations, winding arrangements, and over a range of possible stack lengths. However, the Design is constrained by physical diameter, stack length, and electrical volt–ampere constraints. A large number of preliminary Machine Designs do not satisfy the specified turbo-generator torque/speed requirements under the given volt–ampere constraints and therefore it is ineffective to perform finite element analysis on all preliminary Design variations. In order to establish the feasibility of a Machine Design to fulfill the specified turbo-generator torque/speed requirements, the concept of inductance-limits is presented and then linked with stator Design parameters. By application of this analysis strategy, a confined optimal set of stator Designs are obtained and are subjected to detailed finite element simulations. A final Machine Design is selected and fabricated. Experimental results are presented for the validation of the final Machine Design.
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Design of a Stator for a High-Speed Turbo-Generator With Fixed Permanent Magnet Rotor Radius and Volt–Ampere Constraints
IEEE Transactions on Energy Conversion, 2018Co-Authors: Nuwantha Fernando, Puvan Arumugam, Chris GeradaAbstract:This paper investigates high-speed surface PM Machine Design for portable turbo-generator applications. The rotor radius is fixed to achieve certain optimal characteristics of the magnet retention mechanism. The objective of this paper is to Design and select the stator. The stator Designs are populated by different slot/pole combinations, winding arrangements, and over a range of possible stack lengths. However, the Design is constrained by physical diameter, stack length, and electrical volt–ampere constraints. A large number of preliminary Machine Designs do not satisfy the specified turbo-generator torque/speed requirements under the given volt–ampere constraints and therefore it is ineffective to perform finite element analysis on all preliminary Design variations. In order to establish the feasibility of a Machine Design to fulfill the specified turbo-generator torque/speed requirements, the concept of inductance-limits is presented and then linked with stator Design parameters. By application of this analysis strategy, a confined optimal set of stator Designs are obtained and are subjected to detailed finite element simulations. A final Machine Design is selected and fabricated. Experimental results are presented for the validation of the final Machine Design.
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integrated pm Machine Design for an aircraft ema
IEEE Transactions on Industrial Electronics, 2008Co-Authors: Chris Gerada, K J BradleyAbstract:This paper looks at the requirements and challenges of Designing a permanent-magnet (PM) motor for a directly driven electromechanical actuator for aerospace applications. Having a directly driven system, the intermediate gearbox is eliminated, bringing advantages in terms of lower component count and reduced jamming probability. The Design of a low-speed high pole number PM motor will be investigated as a potential solution. The main goals of the Design are a high level of actuator integration in order to minimize weight and volume, fault tolerance, and high reliability. The Design will be tailored to the requirements of a typical midspoiler actuation system for a large civil aircraft.
Nuwantha Fernando - One of the best experts on this subject based on the ideXlab platform.
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Design of a stator for a high speed turbo generator with fixed permanent magnet rotor radius and volt ampere constraints
IEEE Transactions on Energy Conversion, 2018Co-Authors: Nuwantha Fernando, Puvan Arumugam, Chris GeradaAbstract:This paper investigates high-speed surface PM Machine Design for portable turbo-generator applications. The rotor radius is fixed to achieve certain optimal characteristics of the magnet retention mechanism. The objective of this paper is to Design and select the stator. The stator Designs are populated by different slot/pole combinations, winding arrangements, and over a range of possible stack lengths. However, the Design is constrained by physical diameter, stack length, and electrical volt–ampere constraints. A large number of preliminary Machine Designs do not satisfy the specified turbo-generator torque/speed requirements under the given volt–ampere constraints and therefore it is ineffective to perform finite element analysis on all preliminary Design variations. In order to establish the feasibility of a Machine Design to fulfill the specified turbo-generator torque/speed requirements, the concept of inductance-limits is presented and then linked with stator Design parameters. By application of this analysis strategy, a confined optimal set of stator Designs are obtained and are subjected to detailed finite element simulations. A final Machine Design is selected and fabricated. Experimental results are presented for the validation of the final Machine Design.
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Design of a Stator for a High-Speed Turbo-Generator With Fixed Permanent Magnet Rotor Radius and Volt–Ampere Constraints
IEEE Transactions on Energy Conversion, 2018Co-Authors: Nuwantha Fernando, Puvan Arumugam, Chris GeradaAbstract:This paper investigates high-speed surface PM Machine Design for portable turbo-generator applications. The rotor radius is fixed to achieve certain optimal characteristics of the magnet retention mechanism. The objective of this paper is to Design and select the stator. The stator Designs are populated by different slot/pole combinations, winding arrangements, and over a range of possible stack lengths. However, the Design is constrained by physical diameter, stack length, and electrical volt–ampere constraints. A large number of preliminary Machine Designs do not satisfy the specified turbo-generator torque/speed requirements under the given volt–ampere constraints and therefore it is ineffective to perform finite element analysis on all preliminary Design variations. In order to establish the feasibility of a Machine Design to fulfill the specified turbo-generator torque/speed requirements, the concept of inductance-limits is presented and then linked with stator Design parameters. By application of this analysis strategy, a confined optimal set of stator Designs are obtained and are subjected to detailed finite element simulations. A final Machine Design is selected and fabricated. Experimental results are presented for the validation of the final Machine Design.
Puvan Arumugam - One of the best experts on this subject based on the ideXlab platform.
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Design of a stator for a high speed turbo generator with fixed permanent magnet rotor radius and volt ampere constraints
IEEE Transactions on Energy Conversion, 2018Co-Authors: Nuwantha Fernando, Puvan Arumugam, Chris GeradaAbstract:This paper investigates high-speed surface PM Machine Design for portable turbo-generator applications. The rotor radius is fixed to achieve certain optimal characteristics of the magnet retention mechanism. The objective of this paper is to Design and select the stator. The stator Designs are populated by different slot/pole combinations, winding arrangements, and over a range of possible stack lengths. However, the Design is constrained by physical diameter, stack length, and electrical volt–ampere constraints. A large number of preliminary Machine Designs do not satisfy the specified turbo-generator torque/speed requirements under the given volt–ampere constraints and therefore it is ineffective to perform finite element analysis on all preliminary Design variations. In order to establish the feasibility of a Machine Design to fulfill the specified turbo-generator torque/speed requirements, the concept of inductance-limits is presented and then linked with stator Design parameters. By application of this analysis strategy, a confined optimal set of stator Designs are obtained and are subjected to detailed finite element simulations. A final Machine Design is selected and fabricated. Experimental results are presented for the validation of the final Machine Design.
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Design of a Stator for a High-Speed Turbo-Generator With Fixed Permanent Magnet Rotor Radius and Volt–Ampere Constraints
IEEE Transactions on Energy Conversion, 2018Co-Authors: Nuwantha Fernando, Puvan Arumugam, Chris GeradaAbstract:This paper investigates high-speed surface PM Machine Design for portable turbo-generator applications. The rotor radius is fixed to achieve certain optimal characteristics of the magnet retention mechanism. The objective of this paper is to Design and select the stator. The stator Designs are populated by different slot/pole combinations, winding arrangements, and over a range of possible stack lengths. However, the Design is constrained by physical diameter, stack length, and electrical volt–ampere constraints. A large number of preliminary Machine Designs do not satisfy the specified turbo-generator torque/speed requirements under the given volt–ampere constraints and therefore it is ineffective to perform finite element analysis on all preliminary Design variations. In order to establish the feasibility of a Machine Design to fulfill the specified turbo-generator torque/speed requirements, the concept of inductance-limits is presented and then linked with stator Design parameters. By application of this analysis strategy, a confined optimal set of stator Designs are obtained and are subjected to detailed finite element simulations. A final Machine Design is selected and fabricated. Experimental results are presented for the validation of the final Machine Design.
Dan M Ionel - One of the best experts on this subject based on the ideXlab platform.
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a review of recent developments in electrical Machine Design optimization methods with a permanent magnet synchronous motor benchmark study
IEEE Transactions on Industry Applications, 2013Co-Authors: Yao Duan, Dan M IonelAbstract:This paper systematically covers the significant developments of the last decade, including surrogate modeling of electrical Machines and direct and stochastic search algorithms for both single- and multi-objective Design optimization problems. The specific challenges and the dedicated algorithms for electric Machine Design are discussed, followed by benchmark studies comparing response surface (RS) and differential evolution (DE) algorithms on a permanent-magnet-synchronous-motor Design with five independent variables and a strong nonlinear multiobjective Pareto front and on a function with eleven independent variables. The results show that RS and DE are comparable when the optimization employs only a small number of candidate Designs and DE performs better when more candidates are considered.
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a review of recent developments in electrical Machine Design optimization methods with a permanent magnet synchronous motor benchmark study
Energy Conversion Congress and Exposition, 2011Co-Authors: Yao Duan, Dan M IonelAbstract:The paper systematically covers the significant developments of the last decade, including surrogate modelling of electrical Machines, direct and stochastic search algorithms for both single- and multi- objective Design optimization problems. The specific challenges and the dedicated algorithms for electric Machine Design are discussed, followed by benchmark studies comparing Response Surface (RS) and Differential Evolutionary (DE) algorithms on a permanent magnet synchronous motor (PMSM) Design with 5 independent variables and a strong non-linear multi-objective Pareto front and on a function with 11 independent variables. The results show that RS and DE are comparable when the optimization employs only a small number of Design candidates and DE performs better when more candidates are included.
Mark L Nagurka - One of the best experts on this subject based on the ideXlab platform.
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Machine Design experiments using mechanical springs to foster discovery learning
2014 ASEE Annual Conference & Exposition, 2014Co-Authors: Peter William Malak, Mark L NagurkaAbstract:This paper describes new experiments that were Designed to provide engineering students with opportunities for discovery learning experiences with systems using mechanical springs. A suite of practical experiments was developed presenting students with a range of challenges requiring them to analyze, measure, and Design springs. Activities in the experiments include: (1) Identifying spring types (tension, compression, torsion) and appropriate applications (automotive door latches, key fobs, pens). (2) Disassembling and re-assembling padlocks (with Design and manufacturing questions related to the springs used in the locks, and measurement of the stiffness of the shackle compression spring). (3) Achieving desired stiffnesses through appropriate series and parallel combinations of springs (requiring stiffness measurements of the given springs, and comparing to manufacturer's supplied data). (4) Experimentally determining shear moduli and stiffnesses of wire and 3D printed springs. Investigating overextension limits of springs. Introduction For the typical undergraduate engineering student the topic of mechanical springs is introduced and discussed in several courses. A first exposure may be in a physics course, where springs are modeled as idealized mechanical energy storage components. Springs store potential energy, complementing masses that store kinetic energy and dampers that are resistive and offer no energy storage capability. In an electrical circuit course, springs are often presented as the analog of either capacitors or inductors, depending on whether a force-voltage or force-current analogy, respectively, is used. For mechanical engineering students, real springs are a core component studied in Machine Design courses, where the nomenclature and Design equations are developed for various types of springs. There may be a rudimentary exposure to physical springs in a mechanical engineering laboratory; more often, springs are passed around in class and used as part of demonstrations.
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USING REMOTE ACCESS FOR SHARING EXPERIENCES IN A Machine Design LABORATORY
2013Co-Authors: Mark L NagurkaAbstract:The promise of remote access of laboratory equipment is that deserving students around the globe would be able to run experiments and engage in real-world investigations that would otherwise not be possible. The idea of remote access for engineering students was discussed at a well-attended session at the 2012 WEEF Conference. Its potential for changing education is as enormous as that of MOOCS. This paper proposes a pilot-study to assess the feasibility of remote access of experiments in the area of Machine Design. The project will explore the feasibility of exploiting internet tools and communication technologies for engineering students to engage in laboratory activities remotely. The experiments were developed in a new Machine Design Laboratory in the Marquette University College of Engineering. The Laboratory incorporates areas for teaching and training, and reflects the spirit of transformational learning that is a theme in a new $50 million Engineering Hall in the College of Engineering. The discovery learning oriented experiments give mechanical engineering students practical experiences and expose them to physical hardware, actual tools, and real-world Design challenges. The experiments require students to identify Machine components, learn nomenclature, measure parameters (dimensions, speed, force), select components for Design challenges, distinguish between normal and used (worn) components, explain proper and abnormal behavior, reverse engineer systems, and justify Design choices. The experiments are (1) Introduction to Machine Systems (how does a chainless bicycle work, what does shifting mean in a motorcycle engine, what are the speeds available in a drill press), (2) Stress Measurements and Concentrations (measure stress in flat bars with holes under tension, round bars with holes, grooves, and fillets under bending, tubes under bending and torsion), (3) Fits and Tolerances (measure forces in the press-fit of shafts on coupler hubs), (4) Gears (Design and build clocks using rapid prototyped gears, measure input-output speeds of transmissions, reverse engineer geared systems), (5) Flexible Components (identify belts, chains, wire-rope; measure tension in belts on pulleys; Design chain-sprocket / belt-pulley systems), (6) Bearings (identify types of bearings; distinguish between normal and used bearings; select of bearings), (7) Bolts (measure torque, shear strength, clamping force), and (8) Go-Kart Design (including powertrain Design). Some of these experiments are more amenable to remote sharing than others. The Laboratory is equipped with workbenches, tools, instruments, computers, data acquisition systems, and an assortment of Machines and mechanical systems to enhance creative exploration and investigation. The Machines and systems include motorcycle engine assemblies, bicycles, a go-kart chassis, a Machine Fault Simulator (training station), and various other systems (industrial gearboxes and gear-motors, automotive transmission and differential, drill presses, etc.) In closing, many educational institutions do not have the resources to support laboratories or purchase equipment integral to the education of next-generation engineers. We are looking to partner with a few such institutions. This paper will discuss the details of experiments that we propose to offer students meaningful Machine Design laboratory experiences via remote access.
