Line-start synchronous motors have attracted researchers’ interest as suitable replacements of asynchronous due to their high efficiency, which has been provoked by strict regulations regarding applicable efficiency classes in the EU market. The research becomes even more challenging it takes into consideration diverse rotor topologies with different magnet locations for this type motor. config...

An accurate and simpler approach for modelling and simulating the dynamic behavior of squirrel cage induction machines is presented here. The model is based on multiple coupled circuits and takes into account the geometry and winding layout of the machine. All inductances are derived by means of the winding function approach (WFA) and are integrated with the decomposition into their Fourier ser...

In this paper, an overview of the techniques applied to AC electric propulsion field has been done. Actual study cases of electric ship propulsion schemes are considered. An impartial comparison between three-level converters versus two-level converter from the viewpoint of electric ship propulsion requirements has been done. Diodeclamped three-level converters using direct torque control (DTC)...

Rotor and stator temperature are of concern in both shortterm machine protection and in longer term condition monitoring for large induction machines. Especially, when operating with overload cycles, it is necessary to monitor rotor bars and stator winding temperatures to make sure that the temperature remains below prescribed limits. The purpose of this paper is to present a thermal monitoring...

Due to the wide utilization of a 3-phase, squirrel-cage, self-excitation generator in renewable energy and isolated areas application, paper deals with detailed design procedure this type generator, sequence systematic manner. The steps are obtained executed Matlab file computer program suit newly designed constructions parameters generator. In new construction, can be operated stable saturatio...

For machine drive applications, multiphase induction motor could potentially meet the demand for high power electric drive systems which are both rugged and energy efficient. High phase number drives possess several advantages over conventional three phase drives such as high torque, higher reliability and increased power. Multiphase induction motors have found many applications such as electri...

A refined space vector modulation scheme for multilevel inverters, using only the instantaneous sampled reference signals is presented in this paper. The proposed space vector pulse width modulation technique does not require the sector information and look-up tables to select the appropriate switching vectors. The inverter leg switching times are directly obtained from the instantaneous sample...

Despite the emergence of new types of electric machines, the squirrel-cage induction motor remains the dominant one. A motor failure can result in large lost revenues. One of types of faults that can occur in these motors is airgap eccentricity. This paper presents results, based on a Finite Element Analysis. It is shown that static eccentricity leads to a non-uniform temperature distribution a...

This paper deals with a complete finite-element analysis procedure for squirrel cage induction motors, including the presence of skewing and iron losses evaluation. The machine is analyzed performing only magneto-static finite element analyses. Saturation phenomena are carefully considered in any operating condition, avoiding long time-stepping synergy between analytical model leads to rapid pr...

This paper presents the mathematical modeling and control design procedure of compressor motor an air conditioner using energy from a photovoltaic system combined with power grid in DC microgrid. A comprehensive model considers interconnection cells their associated DC/DC converter, bus, three-phase squirrel-cage induction its driver, bidirectional DC/AC output filter, grid. The state-of-the-ar...