1. ANALYSIS OF WOUND STATOR MAGNETIC GEAR USING THREE SEGMENT HALBACH ARRAY

Mohammad Amin Moqadasi; Mahmood Hoseini Ali Abadi; Hamid Radmanesh

Volume 1, Issue 1 , Spring 2019, Pages 1-5

Abstract
  The present study discusses a new structure of single layer magnetic gear (SL-MG) with Halbach array in external rotor, which is named single layer magnetic gear with Halbach array (HSL-MG). The key point in this design is using three segment Halbach array instead of the conventional permanent magnets ...  Read More

2. STRUCTURES FOR HIGH TEMPERATURE SUPERCONDUCTING MAGNETIC BEARINGS

Hamed Hekmati; Mohammad Siamaki; Arsalan Hekmati

Volume 1, Issue 1 , Spring 2019, Pages 6-18

Abstract
  As a technology, superconductivity has had a great contribution to the advancement of medical science, electronics, astronomy and transportation. With the improvements in the field of superconductivity, the discovery of new materials with better properties, commercialization of these materials, and regarding ...  Read More

3. PROVIDING A METHOD FOR IMPROVING THE STARTUP CONDITIONS OF INDUCTION MOTORS BASED ON CHANGING THE LOAD CHARACTERISTICS

E. Dehjoo; R. Haghmaram; A. Mosallnejad

Volume 1, Issue 1 , Spring 2019, Pages 19-27

Abstract
  In this paper, the problem of starting an induction motor is investigated and a solution is presented. The large current and considerable torque pulsation of the starting can damage the motor and other consumers connected to the feed line, and increasing the startup time will cause more heat and damage ...  Read More

4. TORQUE RIPPLE REDUCTION OF NON-IDEAL PERMANENT MAGNET BRUSHLESS MOTOR BASED ON SELECTIVE TORQUE HARMONIC ELIMINATION USING ONE CYCLE CONTROL STRATEGY

Abolfazl Halvaei Niasar; Yahya Abdollahi

Volume 1, Issue 1 , Spring 2019, Pages 28-37

Abstract
  Due to some inevitable restrictions during fabrication of permanent magnet brushless (PMBL) motors, some of them have neither sinusoidal nor trapezoidal back-EMF voltages, that we name them as non-ideal PMBL motors. Employing conventional control strategies of permanent magnet synchronous motors (PMSMs) ...  Read More

5. MISCONCEPTION OF TOTAL HARMONIC DISTORTION IN RESOLVERS

R. Alipour-Sarabi; Z. Nasiri-Gheidari; H. Oraee

Volume 1, Issue 1 , Spring 2019, Pages 38-43

Abstract
  Resolvers, as magnetic position sensors, are increasingly used in motion-control systems. Due to electro-magnetic structure, they preserve more accurate and reliable operation than optical encoders in stressful conditions. Usually, to evaluate the performance of a resolver, total harmonic distortion ...  Read More

6. AN OBSERVER BASED BLADE-PITCH CONTROLLER FOR WIND USING FINITE SLIDING MODE IN HIGH WIND SPEED

Ali Khaksari; A. Rezazadeh; Majid Ebadifard

Volume 1, Issue 1 , Spring 2019, Pages 44-50

Abstract
  This paper deals with the problem of designing a robust dynamic output feedback controller for the wind machine. This paper for the first time exploits the designing controller problem of the wind turbines in the presence of time varying delay and uncertain parameters. In this paper, a novel algorithm ...  Read More