Exploring the Basic Principles of Electric Motors and Generators With a Low-Cost Sophomore-Level Experiment

Schubert, Thomas F.; Jacobitz, Frank; Kim, E.M.

doi:10.1109/te.2008.917195

Cited by 18 publications

(14 citation statements)

References 7 publications

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“…A detailed breakdown of student participation in the four class sections can be found in Table 1. The use of student-assigned scores to assess gains in student knowledge and confidence has been successfully used by the investigator team in a previous study (Schubert et al 2008(Schubert et al , 2009). Lawanto and Johnson (2009) discuss student reflection about their knowledge and ability when engaged design activities of differing levels.…”

Section: Assessment Of Student Knowledgementioning

confidence: 99%

Student perceptions and learning of the engineering design process: an assessment at the freshmen level

2011

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An investigation into the impact of a single laboratory session team-based design experience early in the freshman year on student learning of the engineering design process is described. Assessment of the experience focused not only on gains in student perceptions of knowledge of and confidence in applying the engineering design process, but also on actual gains in knowledge, as judged by the investigators based on student written responses. The assessment data showed a significant overall increase in both student knowledge and confidence scores as well as significant individual incremental increases. The gains proved to be in particular significant when compared to those for the entire semester-long course. Design-step logs were used to monitor how students navigated through the engineering design process. While the students were exposed to a simplified linear design process in the lecture component of the class, the design logs indicated a more complex reality. Paths for instructional improvement on the topic of the engineering design process should include a discussion of the potentially complex nature of engineering design and a precise definition of terminology.

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Section: Assessment Of Student Knowledgementioning

confidence: 99%

Student perceptions and learning of the engineering design process: an assessment at the freshmen level

2011

Self Cite

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“…The usage of torque equation in machine design and analysis could be a fundamental requirement no matter in the studying period or in the later professional career. Efforts made so far, which try to give better understanding of machine principles and characteristics, are often based on computer-aided simulation and mainly focus on how machine parameters influence the machine performances [1], [2]; or experimental devices to illustrate the basic principles [3], [4]. However, there is only limited number of papers that try to provide a physical understanding of machine physics and therefore the equations [5], [6].…”

Section: Introductionmentioning

confidence: 99%

A general and intuitive approach to understand and compare the torque production capability of AC machines

Wang

Rasmussen

2014

2014 17th International Conference on Electrical Machines and Systems (ICEMS)

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Electromagnetic torque analysis is one of the key issues in the analysis of electric machines. It plays an important role in machine design and control. The common method described in most of the textbooks is to calculate the torque in the machine variables and then transform them to the dq-frame, through complicated mathematical manipulations. This is a more mathematical approach rather than explaining the physics behind torque production, which even brings a lot of difficulties to specialist. This paper introduces a general and intuitive approach to obtain the dq-frame torque equation of various AC machines. In this method, torque equation can be obtained based on the intuitive physical understanding of the mechanism behind torque production. It is then approved to be applicable for general case, including rotor saliency and various types of magnetomotive force sources. As an application example, torque equations of permanent magnet machine, synchronous reluctance machine and induction machine are obtained, where torque production capability of each machine may be easily understood and a fair comparison of these machine types may then be carried out.

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“…Efforts for improving the teaching of electrical machine related courses are often laid on computer-aided simulation and analysis [1]~ [5], or purpose-built teaching equipments [6]~ [9]. One of the teaching purposes is to enable the students to have a good understanding of the theory, which should enable them to be able to apply properly the theory in different circumstances.…”

Section: Introductionmentioning

confidence: 99%

A simple and general approach to determination of self and mutual inductances for AC machines

Rasmussen

Ritchie

2011

2011 International Conference on Electrical Machines and Systems

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Modelling of AC electrical machines plays an important role in electrical engineering education related to electrical machine design and control. One of the fundamental requirements in AC machine modelling is to derive the self and mutual inductances, which could be position dependant. Theories developed so far for inductance determination are often associated with complicated machine magnetic field analysis, which exhibits a difficulty for most students. This paper describes a simple and general approach to the determination of self and mutual inductances of different types of AC machines. A new vector projection method is proposed. In this method, integration of the magnetic field may simply be replaced by vector projection of the field vector. Inductance may then be obtained by observing the magnetic field axes and the phase winding axes. Examples of applying the proposed method for inductance determination are given for a 3-phase, salient-pole synchronous machine, and an induction machine.Index Terms -inductance determination, synchronous machines, induction machines. R for a two-pole machine.

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Exploring the Basic Principles of Electric Motors and Generators With a Low-Cost Sophomore-Level Experiment

Cited by 18 publications

References 7 publications

Student perceptions and learning of the engineering design process: an assessment at the freshmen level

Student perceptions and learning of the engineering design process: an assessment at the freshmen level

A general and intuitive approach to understand and compare the torque production capability of AC machines

A simple and general approach to determination of self and mutual inductances for AC machines

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