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1. Experiences from developing a new course in mechatronics

Author

Ole Ravn and Søren Hansen

Subjects
Engineering, Computing and Processing, Plan (drawing), Robot kinematics, Education, Course (navigation), ComputingMilieux_COMPUTERSANDEDUCATION, Mathematics education, Proposals, Engineering Profession, Engineering profession, business.industry, Robotics and Control Systems, Components, Circuits, Devices and Systems, Mechatronics, Computer engineering, General Topics for Engineers, Signal Processing and Analysis, Course evaluation, Electrical engineering, Technical university, Bachelor degree, Three-dimensional displays, business, Electrical engineering technology
Abstract

Experiences from a new course in mechatronics at Technical University of Denmark are conveyed in this paper. The course is supposed to teach students enrolled in the bachelor degree in electrical engineering some fundamental knowledge about mechanics and to teach students enrolled in the bachelor degree in mechanical engineering fundamentals about electronics. Furthermore the course uses project work as a method to keep the students actively participating and in part have them teach each other the subjects. The general course plan is presented and the reasoning behind the course structure is discussed in the paper, together with a brief look at the student's reactions in form of data from the course evaluation.

Published
2015

2. High Dynamic Performance Nonlinear Source Emulator

Author

Khiem Nguyen-Duy, Arnold Knott, and Michael A. E. Andersen

Subjects
Engineering, Power, Energy and Industry Applications, energy resources, Testing, Transportation, Nuclear Engineering, 02 engineering and technology, Terrestrial application, Nonlinear circuits, Renewable energy sources, Electric inverters, Research and development, 0202 electrical engineering, electronic engineering, information engineering, Fuel cells, DC-DC converters, Components, Circuits, Devices and Systems, Renewable energy resources, Communication, Networking and Broadcast Technologies, Engineered Materials, Dielectrics and Plasmas, Current voltage characteristics, General Topics for Engineers, DC-DC power converters, Energy source, Fields, Waves and Electromagnetics, Maximum Power Point Tracking algorithms, High dynamic performance, Computing and Processing, Maximum power principle, Settling time, 020209 energy, Nonlinear circuit, Renewable energy source, Short-circuit currents, Capacitance, Generator (circuit theory), Batteries, Current-voltage characteristics, Downstream converters, Electronic engineering, SDG 7 - Affordable and Clean Energy, Electrical and Electronic Engineering, Aerospace, Clean energy sources, Load modeling, Power converters, Buck converter, business.industry, 020208 electrical & electronic engineering, Control engineering, Maximum power point trackers, Converters, Nonlinear system, Signal Processing and Analysis, Integrated circuit modeling, Filter (video), business
Abstract

As research and development of renewable and clean energy based systems is advancing rapidly, the nonlinear source emulator (NSE) is becoming very essential for testing of maximum power point trackers or downstream converters. Renewable and clean energy sources play important roles in both terrestrial and nonterrestrial applications. However, most existing NSEs have only been concerned with simulating energy sources in terrestrial applications, which may not be fast enough for testing of nonterrestrial applications. In this paper, a high-bandwidth NSE is developed that is able to simulate the behaviors of a typical nonlinear source under different critical conditions that can happen during their operations. The proposed 200-W NSE, which consists of a fourth-order output filter buck converter and a novel nonlinear small-signal reference generator, can quickly react not only to an instantaneous change in the input source but also to a load step between nominal and open circuit. Moreover, all of these operation modes have a very fast settling time of only 10 $\mu$ s, which is hundreds of times faster than that of existing works. This attribute allows for higher speed and a more efficient maximum power point tracking algorithm. The proposed NSE, therefore, offers a superior dynamic performance among devices of the same kind.

Published
2016