In the present work, an integrated method of pole shape design optimization for reduction of torque pulsation components in permanent magnet synchronous motors is developed. A progressive design process is presented to find feasible optimal shapes. This method is applied on the pole shape optimization of two prototype permanent magnet synchronous motors, i.e., 4-poles/6-slots and 4-poles-12slots.

Three-phase Induction Motor (IM) drives are widely used in industrial equipments. One of the essential problems of 3-phase IM drives is their high speed and torque pulsation in the fault conditions. This paper shows Direct Torque Control (DTC) strategy for vector control of a 3-phase IM under opencircuit fault. The objective is to implement a solution for vector control of 3-phase IM drives whi...

In this paper combination of a load-commutated inverter (LCI) and a voltage-source inverter (VSI) are employed for performance analysis of induction motor drive. Performance of the drive has been evaluated through the different variation in reference speed and load torque. proposed LCI-based induction motor drives include the following Advantages: 1) sinusoidal motor phase current and voltage b...

Performing fast and accurate methods for modeling the electrical machines has been the subject of several studies and many authors proposed different procedures to attain this aim. Beside the accuracy, the speed of the method is of great concern. On the other hand, the capability of the method to be changed according to the need is another important issue. Finite Element method provides relativ...

This paper investigates the influence of the rotor structure on torque and flux weakening region of V-shape IPM (interior permanent magnet) machine from TOYOTA PRIUS type, more specifically, keeping always the same magnet volume, the effect of the open angle between the two magnet segments of each V-shape pole on the machine performance is studied. Moreover, in order to examine the impact of ph...

K. D. Hoang, Y. Ren, Z.Q.Zhu*, M. Foster Abstract—The switching-table-based direct torque control strategies (ST-DTC) of dual-three phase permanent magnet synchronous machine (PMSM) drives are investigated in this paper. Owing to its inherited advantage of suppression of sixth harmonic torque pulsation, dual-three phase machine has attracted more and more interests among various sorts of multi-...

The squirrel cage induction motor direct torque control main problems due to and large stator flux pulsation. In this an improved model predictive algorithm considering multi-step delay compensation is proposed. At each sampling moment, predict the linkage at next moment under voltage vector. optimal vector deviation from reference value are selected as minimum objective function. Aiming proble...

This paper introduces a BLDC fan motor driver system using modified sinusoidal PWM (SPWM). The driver board is assembled in the motor to minimize system size. Based on the signal from the hall position sensor on the board, the controller generates the SPWM to the power module to drive the BLDC motor. Because it's SPWM instead of square PWM, there is no pulsation torque. The simulation and exper...

Permanent magnet synchronous motors are mostly used in low and high power and variable speed applications. Major disadvantage of PMSM is that the motor exhibits torque pulsations due to many factors from motor and drive. This paper proposes a modified iterative learning controller to reduce the pulsations in torque of permanent magnet synchronous motors (PMSM). Modified ILC has memory to store ...