Recently, policies for carbon reduction are being implemented worldwide to solve environmental and energy consumption problems. Minimum Energy Performance Standard (MEPS) is a policy reducing by regulating the efficiency of industrial induction motors. The motors have low manufacturing cost simple structure, it can be operated without control great advantages in maintenance so applied various f...

Out of total electrical motors 80% are three-phase squirrel-cage induction motors which are widely used in industrial and domestic applications because of the relatively low cost and high reliability. When oversized, most of these motors operate in low efficiency and poor power factor. Adjustable flux motors with multiple winding connections can be an energy efficient solution in variable and f...

Different mathematical models have been used over the years to examine different problems associated with induction motors. These range from the simple equivalent circuit models to more complex d,q models and abc models which allow the inclusion of various forms of impedance and/or voltage unbalance. This paper presents speed torque characteristics of induction motor which are calculated on the...

This paper shows a comparison simulation results for two controllers using the same name plate of 2750 KW, 6.6 KV, 50 HZ for wound and squirrel cage motors using two methods of controlling, the first method is achieved by a conventional method and the second method is achieved by a frequency inverter respectively. Keywords— Squirrel cage and slip ring motors, conventional and VSD controllers si...

The increasing of world population, forced human beings to produce clean energy, more creative solutions have been developed use the energy with most efficient way. Researches on this topic still working today. Nowadays, new electrical machines are invented and currently used ones being continue be improved. In industry, if a survey is made according electric motors, it will seen that, inductio...

In many industrial applications the self-starting capability of electric motors is still an important requirement enabling to simplify drive architecture and increase system's reliability. The efficiency improvement this motor topology has been targeted by various national international regulatory authorities with ad-hoc policies. Indeed, a lower energy consumption leads twofold benefits reduci...

In industries, squirrel cage induction motors are critical for supplying rotary motion in power tools. This research presents a robust but simple framework an inter-turn fault classification at minor loading across diverse occurrence conditions, which is one of the most common defects motor. Early detection this issue to prevent system from completely failing as result it evolving more severe s...

Winding function method (WFM) provides a detailed and rather simple analytical modeling and simulation technique for analyzing performance of faulty squirrel-cage induction motors (SCIMs). Such analysis is mainly applicable for designing on-line fault diagnosis techniques. In this paper, WFM is extended to include variable degree of magnetic saturation by applying an appropriate air gap functio...