Currently, the feasibility to replace standard efficiency electric motors with higher ones is assessed considerations differing from real operating conditions in industry. This study compares of replacing 26 (IE1) high-efficiency (IE2 and IE3) a sugar plant, based on three different energy scenarios considering incremental costs or depreciated motors. Energy scenario 1 consider that operate for...

We have designed kits of flexibly configurable components that students use to quickly wind and construct dc motors, permanent-magnet (pm) machines, and induction motors. They can use these machines to verify design calculations, test their understanding of the machine operating principles, and to test power electronic drives that they also design and construct. In class, the properties of diff...

A direct-drive stepping motor, based on a new principle is reported. The features of the motor is (1) big torque (4-20 times bigger than that of the same-sized conventional electric motors), (2) high stepping resolution, (3) light weight, and (4) simple structure. The motors are suitable for robots in new applications such as microrobots and human-care robots. First, the mechanism and theoretic...

The ready availability of very strong permanent magnets in the form of rare-earth magnetic alloys such as neodymium-iron-boron has lead to renewed interest in one of the oldest types of electric motors the homopolar motor. The ease with which a demonstration homopolar motor can now be built and operated when neodymium magnets are used is quite remarkable. In this paper two recent types of simpl...

INTRODUCTION RECENT years have seen many different initiatives aimed at bringing about a low-carbon society and it is anticipated that, in the automotive field, HEVs (hybrid electric vehicles) that offer significant improvements in fuel consumption will precede EV (electric vehicles) in becoming the mainstream of future vehicle markets. HEVs achieve low fuel consumption and powerful performance...

Magnetic fields can represent a health problem, especially low frequency electromagnetic fields sometimes induced by electric current in metallic objects worn or used in or on the body (as opposed to high frequency electromagnetic fields that produce heat). Electric toothbrushes are widely used because of their convenience, but the electric motors that power them may produce electromagnetic wav...

The global environmental concern and the limited resources of fossil fuels warrant use alternative renewable energy sources. International Maritime Organisation aims to increase efficiency reduce emissions from marine vessels. In this context, in addition conventional propulsion system, application hybrid system (HPS) diesel-electric (DEPS) comes fore. This study analyse electric motors, one HP...

Pregled metoda za procjenu parametara nadomjesnog strujnog luka Electric drives using induction motors are one of the main fields of interest to the control systems and electrical engineering specialists. The quality and effective control of induction motors (IM) is based on their equivalent circuits [1]. The necessity of knowing the equivalent circuit parameters of IM is constantly growing due...

With ever increasing oil prices and concerns for the natural environment, there is a fast growing interest in electric vehicles (EVs). However, energy storage is the weak point of the EVs that delays their progress. For this reason, a need arises to build more efficient, light weight, and compact electric propulsion systems, so as to maximize driving range per charge. There are basically two wa...