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9th International Conference on Power Electronics - ECCE Asia, ICPE 2015-ECCE Asia

作者： Bastos, R.R. Valle, R.M. Nau, S.L. Filho, B. J. Cardoso Graduate Program in Electrical Engineering Federal University of Minas Gerais Av. Antnio Carlos 6627 Belo Horizonte MG Brazil Mechanical Engineering Department UFMG Belo Horizonte Brazil WEG Motors Dept of Research and Product Development Jaraguá do Sul Brazil Electrical Engineering Department UFMG Belo Horizonte Brazil

ISBN: (纸本)9788957082546

Using electric motors with a number of phases greater than three may present some advantages over conventional three phase machines in the following applications: high power levels, electric vehicles and applications that require high levels of reliability. Multiphase machines, meaning designs comprising more than three phases, also allows an increase in torque density from the injection of harmonic currents. It is shown in this paper a comprehensive approach for the derivation of equivalent circuits for steady state operation for both fundamental and third harmonic frequencies for a nine-phase motor with concentrated windings and full pitch. Besides that, simulation of the dynamic model of the machine is done to obtain the expected torque improvement. © 2015 Korean Institute of Power Electronics.

关键词： Induction machine analysis and design multiphase machines third harmonic current injection torque improvement

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Characterization of electrical steels for high speed induction motor applications: Going beyond the standards

Characterization of electrical steels for high speed inducti...

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作者： Costa, André S.L. Bastos, Rodrigo R. Paolinelli, Sebastião C. Nau, Sebastião L. Valle, Ramón M. Filho, Braz J. Cardoso Universidade Federal de Minas Gerais Graduate Program in Electrical Engineering Belo Horizonte Brazil APERAM South America Dept. of Research Timóteo MG Brazil WEG Motors Dept. of Research and Product Development Jaraguá do Sul Brazil

ISBN: (纸本)9781479956982

The objective of the present work is to assess the impact of improvements in standard characterization figures of merit of electrical steels, typically found in manufacturers catalogs (B50 and W10/400), in the performance of high speed electrical motors. From the motor manufacturer standpoint, changing to new materials may represent a complicated and costly procedure. Besides, the motor manufacturer has to deal with process variability and building tolerances that may overcome minor improvements in the electric steel. The electrical steel manufacturer has to deal with numerous process variables and long and expensive development times to come up with new products. Hence, even a small improvement in the B50 and W10/400 figures are considered to be great achievements. In order to verify if such improvements really translate into real gains in electrical motors, a series of prototypes were constructed with newly developed electrical steels. The core losses of these prototypes were determined by the loss segregation method. Test results support the conclusion that the standard steel characterization figures of merit do not carry enough information for steel and motor manufacturers to conclude on the performance of an electrical steel grade. A datasheet of the electrical steel is proposed. Such datasheet carries useful information for the electrical motor designer and should also be used in the steel development process as a new product assessment tool. © 2014 IEEE.

关键词： Silicon steel

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Bioregeneration of spent activated carbon:Review of key factors and recent mathematical models of kinetics

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Chinese Journal of Chemical engineering 2018年第5期26卷 893-902页

作者： Kwok-Yii Leong Siew-Leng Loo Mohammed J.K.Bashir Wen-Da Oh Pasupuleti Visweswara Rao Jun-Wei Lim Centre for Water Research Department of Civil and Environmental Engineering National University of Singapore Singapore Membrane Technology Centre Nanyang Environment and Water Research Institute Nanyang Technological University Department of Environmental Engineering Faculty of Engineering and Green Technology (FEGT) Universiti Tunku Abdul Rahman Residues & Resource Reclamation Centre Nanyang Environment and Water Research Institute (NEWRI) Nanyang Technological University Bio Product Development Program Faculty of Agro-Based Industry Universiti Malaysia Kelantan Institute of Food Security and Sustainable Agriculture Universiti Malaysia Kelantan Department of Fundamental and Applied Sciences Universiti Teknologi PETRONAS

The disposal of spent activated carbon(AC) will inevitably create secondary pollution. In overcoming this problem, the spent AC can be regenerated by means of biological approach. Bioregeneration is the phenomenon in which through the action of microorganisms, the adsorbed pollutants on the surface of the AC will be biodegraded and this enables further adsorption of pollutants to occur with time elapse. This review provides the challenges and perspectives for effective bioregeneration to occur in biological activated carbon(BAC)column. Owing to very few reported works on the bioregeneration rate in BAC column, emphasis is put forward on the recently developed models of bioregeneration kinetic in batch system. All in all, providing potential solutions in increasing the lifespan of AC and the enhancement of bioregeneration rate will definitely overcome the bottlenecks in spent AC bioregeneration.

关键词： Bioregeneration Spent activated carbon Modeling of bioregeneration kinetic Concentration gradient Exoenzyme

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Guanandi ( Calophyllum brasiliense ) seed vegetable oil: Characterization, in vitro safety, and feasibility of use as a pharmaceutical bioinput

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Next Research 2025年第1期2卷

作者： Gabriel Mendes da Cunha Nayhara Madeira Guimarães Rodrigo de Almeida Romagna Ramon Campos Vieira Larissa Kéllen Ferreira Marcelo Ferreira Golvim Filho Juliana Aparecida Severi Ricardo Machado Kuster Eduardo Frizzera Meira Rodrigo Rezende Kitagawa Cristiane dos Santos Giuberti Janaina Cecilia Oliveira Vilanova Graduate Program in Pharmaceutical Sciences Center of Health Sciences Federal University of Espírito Santo (UFES) 29047-105 Vitória ES Brazil Graduate Program in Veterinary Sciences Center for Agricultural Sciences and Engineering Federal University of Espírito Santo (UFES) 29500-000 Alegre ES Brazil Pharmaceutical Product Development Laboratory Center of Exact Natural and Health Sciences Federal University of Espírito Santo (UFES) 29500-000 Alegre ES Brazil Department of Pharmacy and Nutrition Center of Exact Natural and Health Sciences Federal University of Espírito Santo (UFES) 29500-000 Alegre ES Brazil

Calophyllum brasiliense Cambess (guanandi) is a native species with significant economic potential for reforestation and the wood industry, as well as a promising source of pharmaceutical bioinputs, aligning with the United Nations' 2030 Agenda for Sustainable development. This study evaluated the feasibility of utilizing the vegetable oil obtained from guanandi seeds (OVSG) as a pharmaceutical ingredient. Gas chromatography-mass spectrometry analysis identified palmitic, oleic, linoleic, and stearic acids in the OVSG, which together represent 95 % of the lipid fraction of the bioinput. Biological in vitro assays using L929 fibroblasts demonstrated non-cytotoxicity (CI 50 > 200 µg/mL), stimulation of cell proliferation, and healing activity at low concentrations (12.5 - 25 µg/mL). The anionic base cream, prepared by the conventional method and containing 10 % w/w of OVSG, in the absence of synthetic emollients, showed adequate preliminary physical stability and the required texture profile for topical use. The wound healing activity of this formulation was compared with that of a cream with the same formulation, but without OVSG and containing 5 % w/w of allantoin, demonstrating an equivalent effect. This study is unprecedented and demonstrates that OVSG is a viable bioinput for applications as an emollient, positioning the species as a sustainable source of non-wood forest resources for pharmaceutical applications.

关键词： Non-wood forest resource Emulsions Vegetable oil Natural emollient

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Advances In Commercial product development Lessons for INCOSE Systems engineering

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Insight 2000年第2期3卷 45-48页

作者： Clausing, Don Axelband, Elliot Campbell, R.B. MIT United States Graduate Program in Systems Architecting and Engineering - and at RAND United States Center for Innovation in Product Development at MIT United States

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Power quality control of wind-diesel hybrid power systems using fuzzy PI controller

Power quality control of wind-diesel hybrid power systems us...

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2012 3rd International Conference on Manufacturing Science and Technology, ICMST 2012

作者： Yang, Su-Hyung Kim, Ho-Chan Boo, Chang-Jin Kang, Min-Jae Kim, Eel-Hwan Ko, Hee-Sang Lee, Kwang Y. Multidisciplinary Graduate School Program for Wind Energy Jeju National University Korea Republic of Department of Electrical Engineering Jeju National University Korea Republic of Department of Electronic Engineering Jeju National University Korea Republic of Product Development Team/Wind Turbine Division Samsung Heavy Industries Co Korea Republic of Department of Electrical and Computer Engineering Baylor University United States

ISBN: (纸本)9783037855638

This paper proposes a modeling and controller design approach for a wind-diesel hybrid system including dump load. The proposed control scheme for power quality is fuzzy PI controller which has advantages of PI and fuzzy controller. Simulation results show that the proposed controller is more effective against disturbances caused by wind speed and load variation than the PI controller, and thus it contributes to a better quality wind-diesel hybrid power system. © (2013) Trans Tech Publications, Switzerland.

关键词： Controllers

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Sensitivity analysis of Hardware-In-The-Loop (HWIL) simulation systems

Sensitivity analysis of Hardware-In-The-Loop (HWIL) simulati...

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16th IASTED International Conference on Modelling and Simulation

作者： Pate, John Parker, Keith Edlin, Keith R. Kawano, Kenneth I. System Simulation and Development Directorate Research Development and Engineering Center US Army Aviation and Missile Command Redstone Arsenal AL 35809 AEgis Technologies Group Inc. 631 Discovery Drive Huntsville AL 35806 TTEC Product Office Ground-based Midcourse Defense Joint Program Office P.O. Box 1500 Huntsville AL 35807-3801

Verification and Validation (V&V) of Models and Simulations (M&S) is essential to ensuring timely accreditation decisions. Acceptability criteria for accreditation decisions need broad community consensus to determine when "good enough is good enough." This is especially true for system software and Hardware-In-The-Loop (HWIL) simulations. Uncertainties in parameter values used in dynamic simulations lead to difficulties in the a prioi choosing of acceptability criteria for use in an accreditation decision This paper focuses on key parameter variables in the Ballistic Missile Defense kill chain and how sensitivity analysis can be used to determine how sensitive a simulation is to changes in the value of the simulation's inputs, and to changes in the simulation's structure. We will demonstrate how parameter sensitivity analysis was performed in a series of tests where variations in parameter values produced changes in the dynamic behavior of the simulation. We will also illustrate how sensitivity analysis can indicate which acceptability criteria are reasonable choices for use in the accreditation decision. Discovering that the simulation's behavior changes significantly due to a change in some parameter's value can allow the Accreditation Authority to identify threshold values for establishing the acceptability criteria, helping to answer the question: What is "good enough"?

关键词： Computer simulation

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CONSTITUTIVE DESIGN EQUATIONS FOR THERMAL CREEP DEFORMATION OF HT-9

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JOURNAL OF NUCLEAR MATERIALS 1984年第1-3期122卷 91-95页

作者： AMODEO, RJ GHONIEM, NM Fusion Engineering and Plasma Physics Program University of California at Los Angeles Los Angeles California 90024 USA Work is supported by the Department of Energy Contract #DE-AM03-76SF00034 P.A. #DE-AT03-82ER52081 with the Office of Fusion Energy. The help of Dr. Thomas Anderson Manager of the product development section of SANDVIK Steel Research Center is greatly appreciated.

In this paper, we present the results of analysis of data provided by SANDVIK Steel Research Center for the high temperature properties of HT-9. We develop design equations for use in inelastic structural mechanics applications, for the most important thermal creep parameters. Empirical correlations for creep rupture time and the complete description of elongation vs. time are presented. A phenomenological description of steady-state creep is also developed. It is found that dislocation creep can explain the measured data.

关键词： STEEL

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Planning for Resilient Lean programs

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Procedia Computer Science 2014年 28卷 138-145页

作者： Deborah Secor Sebastian Lucae Eric Rebentisch Rockwell Collins Cedar Rapids IA USA Technische Universität München Chair of Product Development Garching Germany Massachussetts Institute of Technology Consortium for Engineering Program ExcellenceCambridge MA USA

What would happen if the key program stakeholders are included in the up-front planning? What if the stakeholders developed the schedule? What if they identified risks, opportunities, critical actions, and key assumptions, prior to program kickoff? What if all of this planning only took one to four days? Rockwell Collins has developed a method called Lean Enabled Accelerated Planning (LEAP) that directly addresses these items. In this paper, you will learn how LEAP is used to increase customer satisfaction, reduce program risk and increase program performance. This paper contains excerpts, experiences and benefits of over two hundred LEAP workshops conducted at Rockwell Collins over the past three years. It also shows how LEAP promotes the new Lean Enablers for Managing engineering programs.

关键词： engineering programs Planning Lean program Management Planning workshops

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development and validation of a strain-rate and temperature dependent crushing model for expanded polystyrene foam applied in bicycle helmets 17

Development and validation of a strain-rate and temperature ...

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17th European Conference on Composite Materials, ECCM 2016

作者： Krundaeva, A.N. De Bruyne, G. Van Paepegem, W. Department of Materials Science and Engineering Faculty of Engineering and Architecture Ghent University Technologiepark 903 Zwijnaarde GentB-9052 Belgium SIM M3 Program Technologiepark 935 Zwijnaarde GentB-9052 Belgium Lazer Sport Lamorinierestraat 37 Antwerpen2018 Belgium Product Development Faculty of Design Sciences University of Antwerp Ambtmanstraat 1 Antwerp2000 Belgium

ISBN: (纸本)9783000533877

This research is aimed at developing a strain-rate and temperature dependent crushing model for expanded polystyrene foam (EPS). EPS is a closed cell foam that is mainly used in applications where energy absorption is critical such as in bicycle helmets. It has good mechanical properties and offers at the same time a reduction on material costs and weight. The main purpose of this work is to study the dynamic properties of EPS foams by deriving stress-strain curves at different strain rates and temperatures. Further objective is to study the compressive loading of EPS foam in bicycle helmets by finite element (FE) simulation and to create a model to simulate the behavior of the EPS foam. Finally, it is also aimed to establish a comparison of the FE analysis in LS-DYNA with the dynamic compression test results. The stress-strain curves for different strain rate and for different temperatures are the output of this experimental test program. During compression, no internal damage was observed in CT-scans. This result allowed the creation of a uniform foam model. The methodology in this research allows developing more accurate FE models for bicycle helmets that can be used during a design process. © 2016, European Conference on Composite Materials, ECCM. All rights reserved.

关键词： Strain rate

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