scholarly journals A Study on The Fully Enclosed Housing Of Interior Permanent Magnet Synchronous Motor

2021 ◽  
Vol 12 (6) ◽  
pp. 687-691
Author(s):  
Ho-Joon Lee Et.al
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnets ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Operating Conditions ◽  
Permanent Magnet Motors ◽  
Housing Design ◽  
Railway Vehicles ◽  
Wide Range ◽  
Interior Permanent Magnet

Approximately 2.5 billion won can be saved every year by replacing existing induction motors, which are traction motors for urban railway vehicles, with permanent magnet motors. This paper presents a study on the structural design of a completely enclosed motor to commercialize an interior permanent-magnet synchronous motor (IPMSM) for the traction of urban railway vehicles. The proposed solution provides protection from an inflow of dust and magnetic powder into the rotor that can deteriorate the motor performance and cause burnout. In addition, unless it is a water-cooled or oil-cooled structure, cooling of an electric motor used in medium and large-sized equipment is not easily accomplished. However, completely enclosed motors are vulnerable to overheating; therefore, research into housing design is required to provide cooling. Additionally, the permissible current density through the stator winding must be considered in the design to prevent the occurrence of thermal demagnetization of permanent magnets. Furthermore, IPMSMs require a separate driver for operation and speed controls for a wide range of operating conditions such as rail traction. Thus, a study has been conducted on IPMSMs and other related driver and control technologies, and their suitability has been validated through performance tests.

scholarly journals Modal Analysis and Rotor-Dynamics of an Interior Permanent Magnet Synchronous Motor: An Experimental and Theoretical Study

2020 ◽  
Vol 10 (17) ◽  
pp. 5881
Author(s):  
Selma Čorović ◽  
Damijan Miljavec
Keyword(s):  
Modal Analysis ◽  
Permanent Magnet ◽  
Permanent Magnets ◽  
Natural Frequencies ◽  
Permanent Magnet Synchronous Motor ◽  
Mechanical Vibration ◽  
Mechanical Vibrations ◽  
Wide Range ◽  
Interior Permanent Magnet ◽  
Interior Permanent Magnets

This paper investigates mechanical vibrations of an interior permanent magnet (IPM) synchronous electrical motor designed for a wide range of speeds by virtue of the modal and rotordynamic theory. Mechanical vibrations of the case study IPM motor components were detected and analyzed via numerical, analytical and experimental investigation. First, a finite element-based model of the stator assembly including windings was set up and validated with experimental and analytical results. Second, the influence of the presence of the motor housing on the natural frequencies of the stator and windings was investigated by virtue of numerical modal analysis. The experimental and numerical modal analyses were further carried out on the IPM rotor configuration. The results show that the natural frequencies of the IPM rotor increase due to the presence of the magnets. Finally, detailed numerical rotordynamic analysis was performed in order to investigate the most critical speeds of the IPM rotor with bearings. Based on the obtained results, the key parameters related to mechanical vibrations response phenomena, which are important when designing electrical motors with interior permanent magnets, are provided. The main findings reported here can be used for experimental and theoretical mechanical vibration analysis of other types of rotating electrical machines.

scholarly journals Simulation and Modelling of Passivity Based Control of PMSM Under Controlled Voltage

2013 ◽  
Vol 64 (5) ◽  
pp. 298-304 ◽  
Author(s):  
Baghdad Belabbes ◽  
Abdelkader Lousdad ◽  
Abdelkader Meroufel ◽  
Ahmed Larbaoui
Keyword(s):  
Nonlinear System ◽  
Permanent Magnet ◽  
Permanent Magnets ◽  
Dynamic Performance ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Operating Conditions ◽  
Linear Estimators ◽  
Passivity Based Control ◽  
Stator Resistance

Abstract The aim of the present paper is the study of the behaviour of passivity based control and difficulties due to synthesis for various operating conditions of a synchronous motor with a permanent magnets. The study takes into account the guarantee of satisfactory static and dynamic performance. It also allows the system to be insensitive to disturbances and uncertainties on the parameters. A number of estimation techniques have been developed to achieve speed and position sensorless permanent magnet synchronous motor (PMSM) drives. Most of them suffer from variation of motor parameters such as the stator resistance, stator inductance and torque constant. Also it is known that conventional linear estimators are not adaptive variations of the operating point in a nonlinear system.

scholarly journals Interior Permanent Magnet Synchronous Motor Design for Eddy Current Loss Reduction in Permanent Magnets to Prevent Irreversible Demagnetization

Energies ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 5082
Author(s):  
Jae-Woo Jung ◽  
Byeong-Hwa Lee ◽  
Kyu-Seob Kim ◽  
Sung-Il Kim
Keyword(s):  
Permanent Magnet ◽  
Eddy Current ◽  
Permanent Magnets ◽  
Permanent Magnet Synchronous Motor ◽  
Core Loss ◽  
Synchronous Motor ◽  
Eddy Current Loss ◽  
Equivalent Circuit Analysis ◽  
Current Loss ◽  
Interior Permanent Magnet

We designed and analyzed an interior permanent magnet synchronous motor (IPMSM) to prevent irreversible demagnetization of the permanent magnets (PMs). Irreversible demagnetization of NdFeB PMs mainly occurs due to high temperature, which should thus be minimized. Therefore, it is necessary to reduce the eddy current loss in the PM through optimal design. The shape of the rotor core was optimized using finite element analysis (FEA) and response surface methodology. Three-dimensional (3-D) FEA is required for accurate computation of the eddy current loss, but there is huge time, effort, and cost consumption. Therefore, a method is proposed for indirectly calculating the eddy current loss of PMs using 2-D FEA. A thermal equivalent circuit analysis was used to calculate the PM temperature of the optimized model. For the thermal analysis, the copper loss, core loss, and eddy current loss in PMs were estimated and applied as a heat source. Based on the results, we confirmed the stability of the optimum model in terms of the PM demagnetization.

Fuzzy Logic Based Speed Control of an IPM Synchronous Motor Drive

2000 ◽  
Vol 4 (3) ◽  
pp. 212-219 ◽  
Author(s):  
M. N. Uddin ◽  
◽  
M. A. Rahman
Keyword(s):  
Fuzzy Logic ◽  
Permanent Magnet ◽  
Fuzzy Logic Controller ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Operating Conditions ◽  
Motor Drive ◽  
Speed Controller ◽  
Synchronous Motor Drive ◽  
Interior Permanent Magnet

This paper presents the on-line implementation of a novel fuzzy logic based speed controller for an interior permanent magnet synchronous motor drive. The fundamentals of fuzzy logic algorithms relating to motor control applications are illustrated. A new fuzzy speed controller for the IPMSM drive is designed. The complete vector control scheme incorporating the fuzzy logic controller (FLC) is successfully implemented in real-time using a digital signal processor board DS 1102 in a laboratory 1 hp interior permanent magnet synchronous motor (IPMSM). The efficacy of the proposed fuzzy logic controller (FLC) based IPMSM drive is verified by simulation as well as experimental results at different dynamic operating conditions. The fuzzy logic controller is found to be more robust for application in the IPMSM drive.

scholarly journals Sensorless Control of a PMSM Drive Using EKF for Wide Speed Range Supplied by MPPT Based Solar PV System

2020 ◽  
Vol 26 (1) ◽  
pp. 32-39
Author(s):  
Abbas Mahmood Oghor Anwer ◽  
Fuad Alhaj Omar ◽  
Hale Bakir ◽  
Ahmet Afsin Kulaksiz
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Optimal Operation ◽  
Operating Conditions ◽  
Solar Pv ◽  
Pv System ◽  
Wide Range ◽  
Speed Range ◽  
Wide Speed Range

In photovoltaic (PV) applications, employing Surface-Mounted Permanent Magnet Synchronous Motor (SMPMSM) can be a suitable option, especially for solar pumping and Heating, Ventilation, and Air Conditioning (HVAC) applications. However, when the motor loads are supplied from varying and limited energy sources, such as solar PV, it is vital to determine operating behavior and provide a stable operation for a wide range of operating conditions. In this study, the operating stability of Permanent Magnet Synchronous Motor (PMSM) was improved by sensorless Field Oriented Control (FOC) based on Extended Kalman Filter (EKF). In order to achieve optimal operation of the PV system under various meteorological conditions and load variations, an incremental conductance approach based maximum power point tracking (MPPT) system was introduced. For estimation of the speed of PMSM in wide speed range, instead of using a hybrid estimation strategy, fixed d-axis current with EKF was applied to the low-speed regions of SMPMSM, while in the medium and high speed regions, the d-axis current was set to zero. The major contributions of this paper are to reduce complexity of the control method and testing the method in a photovoltaic system with MPPT operation. The complete system was modeled in a Matlab/Simulink environment and simulation results are shown according to a wide range of operating conditions.

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