scholarly journals Design of A Novel Line Start Synchronous Motor Rotor

Electronics ◽  
2018 ◽  
Vol 8 (1) ◽  
pp. 25 ◽  
Author(s):  
Berkan Zöhra ◽  
Mehmet Akar ◽  
Mustafa Eker
Keyword(s):  
Finite Elements ◽  
Permanent Magnets ◽  
High Efficiency ◽  
Asynchronous Motor ◽  
Industrial Applications ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors ◽  
Motor Efficiency ◽  
Motor Design ◽  
And Performance

Line start permanent magnet synchronous motors (LS-PMSM) are preferred more and more in industrial applications, because they can start on their own and because of their high efficiency. In this study, a new LS-PMSM rotor typology is suggested, which is modelled using surface mount permanent magnets, in which two different slot types have been used together. The rotor of an asynchronous motor on the industrial market in the IE2 efficiency segment has been remodeled in the study, resulting in an increase in motor efficiency from 85% to 91.8%. A finite elements software was used for determining motor design and performance, in addition to analytical methods.

Various types of traction synchronous motors for urban use

2021 ◽  
pp. 3-7
Author(s):  
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnets ◽  
High Efficiency ◽  
Asynchronous Motor ◽  
Good Alternative ◽  
Operating Conditions ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors ◽  
Inductor Motor ◽  
Urban Conditions

Asynchronous and valve-inductor (synchronous-reactive) motors have high efficiency at high rotor speeds, while permanent magnet synchronous motors (SPM and IPM) have high efficiency at low and medium frequencies. The latter are the most optimal for urban conditions, and the former for conditions of operation on highways and highways. Synchronous motors with permanent magnets are more expensive, so a good alternative to them can be synchronous-jet motors with permanent magnets, which determine the optimal balance of active and reactive torque, as well as efficiency. Keywords: synchronous motor, asynchronous motor, valve-inductor motor, synchronous-jet motor, permanent magnet, efficiency, operating conditions, reactive torque

scholarly journals Electrical Steels and Their Evaluation for Automobile Motors

2019 ◽  
Vol 10 (2) ◽  
pp. 31 ◽  
Author(s):  
Kunihiro Senda ◽  
Masanori Uesaka ◽  
Soichiro Yoshizaki ◽  
Yoshihiko Oda
Keyword(s):  
Permanent Magnets ◽  
High Efficiency ◽  
High Flux ◽  
Electrical Steels ◽  
Synchronous Motors ◽  
High Frequencies ◽  
Traction Motors ◽  
Motor Efficiency ◽  
Important Target ◽  
Iron Losses

Achieving high efficiency and high torque is an important target in EV motors. This paper describes the effect of the magnetic properties of electrical steels used as core materials for synchronous motors with permanent magnets, which are commonly used as the EV traction motors. It was confirmed that electrical steels, which have high flux density and low iron loss properties can realize high motor efficiency and torque. When PWM excitation is considered, thinner electrical steels are advantageous to suppress increased loss due to higher harmonics. Based on these results, electrical steels having high flux densities and low iron losses at high frequencies were developed.

High Efficiency Permanent Magnet Wheel Motor Design for Light Electric Vehicle Applications

2012 ◽  
Vol 721 ◽  
pp. 313-318 ◽  
Author(s):  
Konstantinos Laskaris ◽  
Effrosyni Theodorou ◽  
Vasilios Papanikolaou ◽  
Antonios Kladas
Keyword(s):  
Permanent Magnet ◽  
High Efficiency ◽  
Direct Drive ◽  
Permanent Magnet Synchronous Machines ◽  
Finite Elements Analysis ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors ◽  
Electromagnetic Characteristics ◽  
And Performance ◽  
Fractional Slot Windings

Permanent magnet synchronous machines with non-overlapping concentrated fractional-slot windings present certain improved electrical characteristics compared to full pitch windings configurations. This paper describes the design process and construction of two 10-pole permanent magnet synchronous motors, featuring full-pitch and fractional-pitch windings. The paper compares these two configurations in terms of performance and efficiency. Both motors have been designed for direct-drive applications with low speed and high efficiency capability and are intended to be used as a traction drive in an electric prototype vehicle. The proposed motors have external rotor configuration with surface mounted NdFeB magnets. The electromagnetic characteristics and performance are computed and analyzed by means of finite elements analysis. These results are finally compared with the experimental measurements on respective prototypes.

scholarly journals An objective study of behavior of permanent magnet synchronous motor under abnormal conditions

2018 ◽  
Vol 7 (4) ◽  
pp. 1977
Author(s):  
Zaid H. Al-Tameemi ◽  
Hayder H. Enawi ◽  
Karrar M. Al-Anbary ◽  
Dalya H. Al-Mamoori ◽  
Hussam M. Almukhtar
Keyword(s):  
Permanent Magnet ◽  
High Power ◽  
High Efficiency ◽  
Permanent Magnet Synchronous Motor ◽  
Industrial Applications ◽  
Voltage Sags ◽  
Motor Speed ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors ◽  
High Power Factor

Permanent magnet synchronous motors (PMSM) can be used directly in place of the induction motors (I.M) for several industrial applications since it is characterized by high efficiency, high power factor, and high power compared to I.M. However, this type of motor suffers from some abnormal conditions that result in minimizing power quality such as voltage sags, temporary disturbances, and faults within the network. In this paper, the behavior of PMSM has been studied under the above conditions in a Matlab/Simulink environment. It was noticed that such problems caused an increase in the amount of torque and current in this motor which impacted negatively on the motor speed and influenced the behavior of PMSM. 

scholarly journals PID Controller Based Multiple (Master/Slaves) Permanent Magnet Synchronous Motors Speed Control

2011 ◽  
Vol 11 (2) ◽  
pp. 183-192
Author(s):  
Suroor Dawood ◽  
Samar Majeed ◽  
Habeeb Nekad
Keyword(s):  
Permanent Magnet ◽  
Pid Controller ◽  
High Efficiency ◽  
Control Method ◽  
Speed Control ◽  
Industrial Applications ◽  
Voltage Source ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors ◽  
Approach Method

This paper suggests the use of the traditional proportional-integral-derivative (PID) controller to control the speed of multi Permanent Magnet Synchronous Motors (PMSMs). The PMSMs are commonly used in industrial applications due to their high steady state torque, high power, high efficiency, low inertia and simple control of their drives compared to the other motors drives. In the present study a mathematical model of three phase four poles PMSM is given and simulated. The closed loop speed control for this type of motors with voltage source inverter and abc to dq blocks are designed. The multi (Master/Slaves approach) method is proposed for PMSMs. Mathwork's Matlab/Simulink software package is selected to implement this model. The simulation results have illustrated that this control method can control the multi PMSMs successfully and give better performance.

scholarly journals Properties, Characteristics and Parameters of Permanent Magnet Synchronous Motors under Vector and Scalar Frequency Control

2019 ◽  
Vol 62 (3) ◽  
pp. 205-218 ◽  
Author(s):  
B. I. Firago ◽  
S. V. Aleksandrovsky
Keyword(s):  
Vector Control ◽  
Permanent Magnet ◽  
Permanent Magnets ◽  
Frequency Control ◽  
Asynchronous Motor ◽  
Energy Performance ◽  
Permanent Magnet Synchronous Motors ◽  
Technical Literature ◽  
Synchronous Motors ◽  
Electric Drives

In order to improve energy performance and simplify the system of frequency control of the speed of electric drives, the area of application of synchronous frequency-controlled electric drives with both dependent and independent frequency setting of the voltage supplying the engine is being expanded. This is due to the fact that, as compared with asynchronous variable frequency drives, synchronous ones undergo lower power losses and they have rigid mechanical characteristics without speed feedback. Also, the simplest law of frequency control, viz. a proportional one, which, however, provides the maximum electromagnetic torque of the engine unchanged at R1 = 0 at all frequencies due to the constant magnetic flux, is applicable to a synchronous frequency controlled motor. Characteristics and properties of permanent magnet synchronous motors (PMSM) with the dependent frequency setting of supplied voltage (under vector control of PMSM) have been discussed and reviewed in technical literature quite sufficiently. It cannot be said about the PMSM with independent frequency setting reference which work under scalar frequency control. In the present article a comparison of properties and characteristics of vector and scalar frequency controlled PMSM is presented. For a scalar frequency controlled PMSM a function of the relative voltage g on the relative frequency a (g = f(a)) taking into account the PMSM parameters has been defined. The derived function g = f(a) differs from a proportional law of frequency control g = a. It is found that the influence of the parameters on the law of frequency control is small, and it can be applied without adjustment in most cases, in contrast to the frequency control of the asynchronous motor. For scalar frequency control, a method for determining the parameters of synchronous motors has been proposed in accordance with the parameters of synchronous motors with permanent magnets, which are given for operation under vector control. According to the presented methodology the OMRON SGMH-50D engine parameters have been determined for scalar frequency control and the function of g = f(a) have been computed.

scholarly journals Comprehensive Parameters Identification and Dynamic Model Validation of Interior-Mount Line-Start Permanent Magnet Synchronous Motors

Machines ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. 4 ◽  
Author(s):  
Luqman S. Maraaba ◽  
Zakariya M. Al-Hamouz ◽  
Abdulaziz S. Milhem ◽  
Ssennoga Twaha
Keyword(s):  
Mathematical Model ◽  
Permanent Magnet ◽  
High Efficiency ◽  
Experimental Tests ◽  
Induction Machines ◽  
Test Methods ◽  
Operating Conditions ◽  
Test Method ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors

The application of line-start permanent magnet synchronous motors (LSPMSMs) is rapidly spreading due to their advantages of high efficiency, high operational power factor, being self-starting, rendering them as highly needed in many applications in recent years. Although there have been standard methods for the identification of parameters of synchronous and induction machines, most of them do not apply to LSPMSMs. This paper presents a study and analysis of different parameter identification methods for interior mount LSPMSM. Experimental tests have been performed in the laboratory on a 1-hp interior mount LSPMSM. The measurements have been validated by investigating the performance of the machine under different operating conditions using a developed qd0 mathematical model and an experimental setup. The dynamic and steady-state performance analyses have been performed using the determined parameters. It is found that the experimental results are close to the mathematical model results, confirming the accuracy of the studied test methods. Therefore, the output of this study will help in selecting the proper test method for LSPMSM.

Development and testing of an efficient and cost-effective underwater propulsion system

2019 ◽  
Vol 233 (10) ◽  
pp. 1309-1328
Author(s):  
Libero Paolucci ◽  
Emanuele Grasso ◽  
Francesco Grasso ◽  
Niklas König ◽  
Marco Pagliai ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
High Efficiency ◽  
High Reliability ◽  
Underwater Vehicle ◽  
Propulsion System ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors ◽  
Vehicle Propulsion ◽  
Underwater Propulsion ◽  
Thrust And Torque

Underwater vehicle propulsion performed by exploiting electrical motor is in general the most flexible solution and it is growing in popularity because of its high efficiency both at high and at low advance speed, quick and simple deployment, low costs, and encumbrance. In the present work, permanent magnet synchronous motors for underwater propulsion are proposed. In particular, advanced sensorless control techniques of permanent magnet synchronous motors permit reduced costs, high reliability, and performances. When dealing with small autonomous underwater vehicle propulsion, such devices are hard to find in the market. Hence, the authors focused the research in the development of a system able to perform a reliable rotational speed and torque sensorless estimation. The design and implementation of a complete solution for underwater propulsion are presented as well as a novel rotor polarity identification technique exploiting a high-frequency injection control. Pool tests for the identification of the performances and of the dynamic parameters of the propulsion system are presented. Finally, the possibility of operating a sensorless estimation of the thrust and torque exerted by the propeller and pool test measurements are presented. These features could be exploited to improve navigation accuracy and involves obvious benefits in terms of cost reduction and reliability of the system.

scholarly journals Comprehensive Review on Main Topologies of Impedance Source Inverter Used in Electric Vehicle Applications

2020 ◽  
Vol 11 (2) ◽  
pp. 37 ◽  
Author(s):  
Daouda Mande ◽  
João Pedro Trovão ◽  
Minh Cao Ta
Keyword(s):  
Power Systems ◽  
Power Electronics ◽  
Electric Vehicles ◽  
High Efficiency ◽  
Current Source ◽  
Input Voltage ◽  
Industrial Applications ◽  
Voltage Source ◽  
Two Stage ◽  
And Performance

Power electronics play a fundamental role for electric transportation, renewable energy conversion and many other industrial applications. They have the ability to help achieve high efficiency and performance in power systems. However, traditional inverters such as voltage source and current source inverters present some limitations. Consequently, many research efforts have been focused on developing new power electronics converters suitable for many applications. Compared with the conventional two-stage inverter, Z-source inverter (ZSI) is a single-stage converter with lower design cost and high efficiency. It is a power electronics circuit of which the function is to convert DC input voltage to a symmetrical AC output voltage of desired magnitude and frequency. Recently, ZSIs have been widely used as a replacement for conventional two-stage inverters in the distributed generation systems. Several modifications have been carried out on ZSI to improve its performance and efficiency. This paper reviews the-state-of-art impedance source inverter main topologies and points out their applications for multisource electric vehicles. A concise review of main existing topologies is presented. The basic structural differences, advantages and limitations of each topology are illustrated. From this state-of-the-art review of impedance source inverters, the embedded quasi-Z-source inverter presents one of the promising architectures which can be used in multisource electric vehicles, with better performance and reliability. The utilization of this new topology will open the door to several development axes, with great impact on electric vehicles (EVs).

scholarly journals Simultaneous Load Disturbance Estimation and Speed Control for Permanent Magnet Synchronous Motors in Full Speed Range

2020 ◽  
Vol 10 (24) ◽  
pp. 9006
Author(s):  
Yingming Tian ◽  
Yi Chai ◽  
Li Feng
Keyword(s):  
Permanent Magnet ◽  
High Speed ◽  
High Efficiency ◽  
Weight Ratio ◽  
Permanent Magnet Synchronous Motors ◽  
Position Information ◽  
Synchronous Motors ◽  
Speed Range ◽  
Combined Control ◽  
Full Speed

Permanent magnet synchronous motors (PMSM), which are with the advantages of high torque-to-weight ratio and high efficiency, are widely applied in modern industrial systems. However, existing approaches may fail to accurately track the speed trajectory because of the load disturbances. This paper proposes an equivalent and combined control strategy to mitigate the slow time-varying load disturbances and decrease the overshoot for PMSM in full speed range. First, a state observer is proposed to reconstruct the current variables and speed state in the d-q axis. Hence, one can get the speed and position information without the sensors. Then, the disturbance and the load are estimated by the estimating law. Thus, it can reduce the effect of load and disturbances. Further, the PD control is introduced to weaken the overshoot. As a result, the speed trajectory can be more effectively hold both in high speed and low speed. Finally, numerical examples are presented to demonstrate the validity and effectiveness of the proposed estimation scheme and its robustness under different conditions.

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