محمدرضا فیضی
دانشگاه تبریز - دانشکده مهندسی برق و کامپیوتر
[ 1 ] - بررسی تأثیر تغییر شکل مغناطیس‌های دائم بر گشتاور دندانه و نیروی محرکه القایی یک ژنراتور مغناطیس دائم شارمحوری به کمک روش المان محدود
گشتاور دندانه ماشین‌های مغناطیس دائم شارمحور (AFPM) در حالت عادی و در مقایسه با ماشین‌های شار شعاعی بالا است. چگالی توان، گشتاور دندانه، مشخصه‌های گشتاور سرعت و بازده ازجمله پارامترهایی هستند که در طراحی ژنراتورها حائز اهمیت هستند. در این مقاله آثار تغییر و انحراف شکل مغناطیس‌های دائم روتور بر عملکرد ژنراتور مطالعه شده است. شکل بهینه آهنرباهای روتور به‌منظور کاهش گشتاور دندانه و به دست آوردن تو...
[ 2 ] - Improved Optimization Process for Nonlinear Model Predictive Control of PMSM
Model-based predictive control (MPC) is one of the most efficient techniques that is widely used in industrial applications. In such controllers, increasing the prediction horizon results in better selection of the optimal control signal sequence. On the other hand, increasing the prediction horizon increase the computational time of the optimization process which make it impossible to be imple...
[ 3 ] - Analysis and Comparison Study of Novel Stator-Segmented Switched Reluctance Motor
This paper presents analysis and comparative study of a novel high-torque three-phase switched reluctance motor (SRM) with magnetically isolated stator segments. In the proposed SRM, each segment has a concentric winding located on the center body of it and two diametrically opposite windings which form the motor phase. There are four salient poles in the stator segment. Two of them share their...
[ 4 ] - A High Torque Density Axial Flux SRM with Modular Stator
A novel structure of switched reluctance motors (SRMs) is proposed. The proposed structure uses the benefits of the axial flux path, short flux path, segmental rotor, and flux reversal free stator motors all together to improve the torque density of the SRMs. The main geometrical, electrical and physical specifications are presented. In addition, some features of the proposed structure are comp...
[ 5 ] - A New Skewed-Rotor-Pole Switched Reluctance Motor Design
This paper considers a new switched reluctance motor (SRM) structure aiming at high starting torque with low volume. For some applications such as EVs (Electrical Vehicles), the motor volume and starting torque is a critical point in its design. In many methods, reducing the motor volume causes reduction in starting torque and decreases the motor efficiency. Unlike conventional SRMs, the rotor ...
[ 6 ] - A New Switched Reluctance Motor Design to Reduce Torque Ripple using Finite Element Fuzzy Optimization
This paper presents a new design to reduce torque ripple in Switched Reluctance Motors (SRM). Although SRM possesses many advantages in terms of motor structure, it suffers from large torque ripple that causes problems such as vibration and acoustic noise. The paper describes new rotor and stator pole shapes with a non-uniform air gap profile to reduce torque ripple while retaining its average ...
[ 7 ] - A New Method for Computation of Axial Flux Permanent Magnet Synchronous Machine Inductances under Saturated Condition
Accurate computing of the saturated inductances of Permanent Magnet Synchronous Machine (PMSM) is very important during the design process. In this paper, a new method is presented based on the B-H characteristic of the stator material and unsaturated inductances formulations. This method is used to calculate the saturated inductances of the axial flux PMSM. The synchronous inductance and all o...
[ 8 ] - Sensorless Model Predictive Force Control with a Novel Weight Coefficients for 3-Phase 4-Switch Inverter Fed Linear Induction Motor Drives
The sensorless model predictive force control (SMPFC) is a strong method for controlling the drives of three-phase 4(6)-switch inverter linear induction motors. This kind of inverter can be employed for fault tolerant control in order to solve the problem of open/short circuit in 6-switch inverters (B6). This paper proposed a method for the SMPFC of a linear induction motor (LIM) with a 4-switc...
[ 9 ] - Sensorless Indirect Field Oriented Control of Single-sided Linear Induction Motor With a Novel Sliding Mode MRAS Speed Estimator
This paper proposes a new sliding mode control (SMC) based model reference adaptive system (MRAS) for sensorless indirect field oriented control (IFOC) of a single-sided linear induction motor (SLIM). The operation of MRAS speed estimators dramatically depends on adaptation mechanism. Fixed-gain PI controller is conventionally used for this purpose which may fail to estimate the speed correctl...
[ 10 ] - Computationally Efficient Long Horizon Model Predictive Direct Current Control of DFIG Wind Turbines
Model predictive control (MPC) based methods are gaining more and more attention in power converters and electrical drives. Nevertheless, high computational burden of MPC is an obstacle for its application, especially when the prediction horizon increases extends. At the same time, increasing the prediction horizon leads to a superior response. In this paper, a long horizon MPC is proposed to c...
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