The performance of Vector Controlled Induction Motor drive depends on the accuracy of rotor resistance which will vary with temperature and frequency. The MRAS approach using reactive power and flux as a state variable for rotor resistance estimation makes MRAS computationally simpler and easy to design. In this paper, Rotor Flux based MRAS (RF-MRAS) and Reactive Power based MRAS (RP-MRAS) for ...

Electrical machines find their place in every field, such as industrial, transportation, home, and commercial sectors. The suitability of the electrical machine for area which it will be used is important terms energy efficiency. selection motor to variable speed applications electric vehicles also very important. Torque power are determining factors required speed/torque or speed/power combina...

In order to obtain more accurate predicted dynamic steady-state performance with shorter computation time, an available mathematical model is modified and presented. Using this modified model, performance of a typical switched reluctance motor (SRM) under a wide range of variations of operating conditions is obtained and discussed. These include variations of speed, voltage, load and switching ...

Stator flux oriented vector control of induction motor (IM) drives for speed sensorless control has several advantages. But the application of a pure integrator for the flux estimation is difficult due to the presence of measurement noise and dc offset. To overcome these problems, some have used a programmable cascaded low pass filter (PCLPF). In this paper, it is shown that some problems still...

Axial-flux permanent-magnet (AFPM) motors are a kind of important motor with compact structure, high power density and torque density. In this review, the progress AFPM their key technologies analyzed described, emphasis on topological structures, design optimization methods control techniques. Based these analyses, main findings review following: (1) yokeless segment armature (YASA)-type have ...

Hanne Jussila Concentrated Winding Multiphase Permanent Magnet Machine Design and Electromagnetic Properties – Case Axial Flux Machine Lappeenranta 2009 119 p. Acta Universitatis Lappeenrantaensis 374 Diss. Lappeenranta University of Technology ISBN 978-952-214-882-7, ISBN 978-952-214-883-4 (PDF), ISSN 1456-4491 Concentrated winding permanent magnet machines and their electromagnetic properties...

Better torque performance and higher reliability have long been the focus of research for slotted limited-angle motors (LATMs), which are primarily used to position first-stage valves in electrohydraulic servosystems. This paper presents a high axial-flux LATM with quasi-Halbach array improvement including constant range (CTR) output torque. Firstly, structure two sets windings operation princi...