scholarly journals Analysis of Modal and Vibration Reduction of an Interior Permanent Magnet Synchronous Motor

Energies ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 3427 ◽  
Author(s):  
Xie ◽  
Xia ◽  
Li ◽  
Li
Keyword(s):  
Permanent Magnet ◽  
Electromagnetic Force ◽  
Optimization Design ◽  
Design Method ◽  
Permanent Magnet Synchronous Motor ◽  
Load Condition ◽  
Element Model ◽  
Permanent Magnet Synchronous Motors ◽  
Vibration Displacement ◽  
Interior Permanent Magnet

Interior permanent magnet synchronous motors (IPMSMs) have been widely used in a variety of applications. The IPMSM will generate vibration as well as functioning like other traditional motors, which will affect the performance and the durability of the motor itself. The modal and vibration characteristics of the IPMSM and an optimization design to reduce vibration are researched in this paper. The formulas of electromagnetic force are deduced and analyzed, and a finite element model is established. The model is used for modal calculation, and the low order natural frequency is obtained. Then, the modal test is carried out by the hammering method, and the resonance frequency is found by analyzing the results. Eventually, the electromagnetic vibration is analyzed by taking the electromagnetic force as the load condition, the vibration displacement waveform is obtained, and the correctness of the dynamic calculation is verified by vibration tests. In addition, an eccentric tooth edge design is proposed to weaken the dominant radial electromagnetic force and the vibration displacement is compared with the designed prototype. This design method, which could help to reduce the vibration and noise of the IPMSM, has great potential in future applications.

scholarly journals Iron Loss Analysis of a Concentrated Winding Type Interior Permanent Magnet Synchronous Motor with Single and Dual Layer Magnet Shape

Machines ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 74
Author(s):  
Chan-Ho Baek ◽  
Hyo-Seob Shin ◽  
Jang-Young Choi
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Homogenization Method ◽  
Iron Loss ◽  
Frequency Separation ◽  
Permanent Magnet Synchronous Motors ◽  
Loss Analysis ◽  
Iron Losses ◽  
Interior Permanent Magnet ◽  
Rotor Type

In this study, the iron losses of high flux density concentrated winding-type interior permanent magnet synchronous motors for three different magnet shapes (single-V, single-flat, and dual-delta) and rotor structures are analyzed and compared. Iron loss is analyzed using the classical Steinmetz equation (CSE) based on the frequency separation approach using the iron loss material table, and each rotor type is compared. In addition, to validate the hysteresis loss for each rotor type, two additional analyses are performed. In the methods considered, the number of minor loops is counted, and the area is calculated based on DC bias. The eddy current loss is compared using two approaches: CSE base frequency separation and the homogenization method considering the skin effect. This study primarily focuses on the comparison of relative iron losses based on different rotor topologies instead of absolute comparisons.

Direct Torque Control of Interior Permanent Magnet Synchronous Motors Based on Position Sensorless Control

2013 ◽  
Vol 756-759 ◽  
pp. 627-631
Author(s):  
Zhao Jun Meng ◽  
Rui Chen ◽  
Yue Jun An
Keyword(s):  
Permanent Magnet ◽  
Electric Vehicle ◽  
Control Method ◽  
Sensorless Control ◽  
Permanent Magnet Synchronous Motor ◽  
Direct Torque Control ◽  
Torque Control ◽  
Permanent Magnet Synchronous Motors ◽  
Interior Permanent Magnet ◽  
Position Sensorless

The position sensorless control method based on direct torque control was carried out aiming at the interior permanent magnet synchronous motor (IPMSM) in this paper. To the consideration of electric vehicle space is limited, in order to reduce the controller size to save space, this paper studied the sensorless control. Meanwhile, in order to improve the control rapidity as much as possible of the electric vehicle, take direct torque control as a control method of the driving motor. Finally, designed the sensorless direct torque controller and studied its simulation. Simulation results show that the control system have good dynamic and static characteristics in the full speed range.

scholarly journals Synchronization and Antisynchronization of N-Coupled Complex Permanent Magnet Synchronous Motor Systems with Ring Connection

Complexity ◽  
2017 ◽  
Vol 2017 ◽  
pp. 1-15 ◽  
Author(s):  
Cuimei Jiang ◽  
Shutang Liu
Keyword(s):  
Permanent Magnet ◽  
Chaotic Systems ◽  
Design Method ◽  
Permanent Magnet Synchronous Motor ◽  
Mathematical Expression ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors ◽  
Direct Design ◽  
General Complex ◽  
Complex Chaotic Systems

This paper discusses synchronization and antisynchronization of N-coupled complex permanent magnet synchronous motors systems with ring connection. Based on the direct design method and antisymmetric structure, the appropriate controllers are designed to ensure the occurrence of synchronization and antisynchronization in an array of N-coupled general complex chaotic systems described by a unified mathematical expression with ring connection. The proposed method is flexible and is suitable both for design and for implementation in practice. Numerical results are plotted to show the rapid convergence of errors to zero and further verify the effectiveness and feasibility of the theoretical scheme.

scholarly journals Nonlinear Direct Torque Control of Interior Permanent Magnet Synchronous Motor Drive

2019 ◽  
Vol 38 (1) ◽  
pp. 15-26
Author(s):  
Jackson J. Justo ◽  
Francis Mwasilu
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Direct Torque Control ◽  
Torque Control ◽  
Test Bed ◽  
Permanent Magnet Synchronous Motors ◽  
Speed Tracking ◽  
Torque Response ◽  
Interior Permanent Magnet ◽  
Speed Change

This paper presents a nonlinear direct torque control (NDTC) strategy of interior permanent magnet synchronous motors (IPMSMs) for electric vehicle (EV) propulsion. The proposed NDTC scheme applies a nonlinear model of IPMSM to dynamically determine the optimal switching states that optimize the EV drivers’ decision to reduce the workload. Moreover, the proposed NDTC method has a simple control structure and can explicitly handle system constraints and nonlinearities. The performance evaluation is conducted via a prototype IPMSM test-bed with a TMS320F28335 DSP. Comparative experimental results provide the evidence of improvements of the proposed NDTC strategy over the conventional DTC strategy by indicating a fast torque response and an accurate speed tracking even under rapid speed change conditions.

scholarly journals Characteristic Analysis and Experimental Verification of Electromagnetic and Vibration/Noise Aspects of Fractional-Slot Concentrated Winding IPMSMs of e-Bike

Energies ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 238
Author(s):  
Young-Geun Lee ◽  
Tae-Kyoung Bang ◽  
Jeong-In Lee ◽  
Jong-Hyeon Woo ◽  
Sung-Tae Jo ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Noise Sources ◽  
Electromagnetic Noise ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors ◽  
Interior Permanent Magnet ◽  
Torque Pulsations ◽  
Vibration Noise

In this study, we performed the electromagnetic and mechanical characteristic analyses of an 8-pole 12-slot interior permanent magnet synchronous motor (IPMSM). Permanent magnet synchronous motors are classified into surface permanent magnet synchronous motor and interior permanent magnet synchronous motors according to the type of rotor. The IPM type is advantageous for high-speed operation because of the structure where the permanent magnet is embedded inside the rotor, and it has the advantage of having a high output density by generating not only the magnetic torque of the permanent magnet, but also the reluctance torque. However, such a motor has more vibration/noise sources than other types, owing to changes in reluctance. The sources of motor noise/vibration can be broadly classified into electromagnetic, mechanical, and aerodynamic sources. Electromagnetic noise sources are classified into electromagnetic excitation sources, torque pulsations, and unbalanced magnetic forces (UMFs). Vibration and noise cause machine malfunctions and affect the entire system. Therefore, it is important to analyze the electromagnetic vibration source. In this study, the electromagnetic characteristics of an IPMSM were analyzed through the finite element method to derive the UMF. Vibration and noise analyses were performed by electromagnetic–mechanical coupling analysis, and vibration and noise characteristics based on electromagnetic noise sources were analyzed.

scholarly journals Towards an improved energy efficiency of the interior permanent magnet synchronous motor drives

2014 ◽  
Vol 11 (2) ◽  
pp. 257-268 ◽  
Author(s):  
Marko Gecic ◽  
Darko Marcetic ◽  
Veran Vasic ◽  
Igor Krcmar ◽  
Petar Matic
Keyword(s):  
Energy Efficiency ◽  
Permanent Magnet ◽  
High Speed ◽  
Permanent Magnet Synchronous Motor ◽  
Motor Drives ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors ◽  
Stator Current ◽  
Interior Permanent Magnet ◽  
Efficiency Increase

This paper investigates the possibility of energy efficiency increase in the drives with high speed permanent magnet synchronous motors. The losses are decreased by the proposed procedure, i.e. proper allocation of the available stator current capacity to the direct and quadrature current components. The approach provides increased energy efficiency by varying the ratio between copper and iron losses.

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