Modeling and detecting the stator winding fault of permanent magnet synchronous motors

2012 ◽  
Vol 27 ◽  
pp. 1-16 ◽  
Author(s):  
Wenxin Liu ◽  
Li Liu ◽  
Il-Yop Chung ◽  
David A. Cartes ◽  
Wei Zhang
Keyword(s):  
Permanent Magnet ◽  
Stator Winding ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors

Modeling of Surface-Mounted Permanent Magnet Synchronous Motors With Stator Winding Interturn Faults

2011 ◽  
Vol 58 (5) ◽  
pp. 1576-1585 ◽  
Author(s):  
Luís Romeral ◽  
Julio César Urresty ◽  
Jordi-Roger Riba Ruiz ◽  
Antonio Garcia Espinosa
Keyword(s):  
Permanent Magnet ◽  
Stator Winding ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors

scholarly journals Comparison of Selected Methods for the Stator Winding Condition Monitoring of a PMSM Using the Stator Phase Currents

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1630
Author(s):  
Przemyslaw Pietrzak ◽  
Marcin Wolkiewicz
Keyword(s):  
Permanent Magnet ◽  
Early Stage ◽  
Permanent Magnet Synchronous Motor ◽  
Experimental Studies ◽  
Discrete Wavelet ◽  
Stator Winding ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors ◽  
Phase Current ◽  
Short Circuits

Stator winding faults are one of the most common faults of permanent magnet synchronous motors (PMSMs), and searching for methods to efficiently detect this type of fault and at an early stage of damage is still an ongoing, important topic. This paper deals with the selected methods for detecting stator winding faults (short-circuits) of a permanent magnet synchronous motor, which are based on the analysis of the stator phase current signal. These methods were experimentally verified and their effectiveness was carefully compared. The article presents the results of experimental studies obtained from the spectral analysis of the stator phase current, stator phase current envelope, and the discrete wavelet transform. The original fault indicators (FIs) based on the observation of the symptoms of stator winding fault were distinguished using the aforementioned methods, which clearly show which symptom is most sensitive to the incipient fault of the stator winding of PMSMs.

scholarly journals Pulse Width Modulation Analysis of Five-Level Inverter- Fed Permanent Magnet Synchronous Motors for Electric Vehicle Applications

2021 ◽  
Vol 1 (4) ◽  
pp. 477-487
Author(s):  
Omokhafe J. Tola ◽  
Edwin A. Umoh ◽  
Enesi A. Yahaya
Keyword(s):  
Permanent Magnet ◽  
Electric Vehicle ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
High Efficiency ◽  
Performance Enhancement ◽  
Time Synchronization ◽  
Stator Winding ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors

In recent times, intense research has been focused on the performance enhancement of permanent magnet synchronous motors (PMSM) for electric vehicle (EV) applications to reduce their torque and current ripples. Permanent magnet synchronous motors are widely used in electric vehicle systems due to their high efficiency and high torque density. To have a good dynamic and transient response, an appropriate inverter topology is required. In this paper, a five-level inverter fed PMSM for electric vehicle applications, realized via co-simulation in an electromagnetic suite environment with a reduced stator winding current of PMSM via the use of in-phase disposition (PD) pulse width modulation (PWM) techniques as the control strategy is presented. The proposed topology minimizes the total harmonic distortion (THD) in the inverter circuit and the motor fed and also improves the torque ripples and the steady-state flux when compared to conventional PWM techniques. A good dynamic response was achieved with less than 10A stator winding current, zero percent overshoot, and 0.02 second settling time synchronization. Thus, the stator currents are relatively low when compared to the conventional PWM. This topology contribution to the open problem of evolving strategies that can enhance the performance of electric drive systems used in unmanned aerial vehicles (UAV), mechatronics, and robotic systems.

scholarly journals The Influence of Stator Winding Turns on the Steady-State Performances of Line-Start Permanent Magnet Synchronous Motors

Energies ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2363 ◽  
Author(s):  
Qiu ◽  
Zhang ◽  
Hu ◽  
Yang ◽  
Yi
Keyword(s):  
Steady State ◽  
Permanent Magnet ◽  
State Power ◽  
Operating Conditions ◽  
Stator Winding ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors ◽  
Variation Mechanism ◽  
Torque Angle ◽  
Steady State Performance

The variation of stator winding turns will directly affect the key parameters of a motor, such as winding resistance and winding reactance, which further affect the steady-state performance of the motor. In order to get excellent steady-state performance from line-start permanent magnet synchronous motors (LSPMSMs) under different load powers, taking an 11 kW LSPMSM as an example, the finite element method (FEM), combined with the steady-state phasor diagram and torque angle characteristic, are used in this paper for the optimal design of the stator winding turns of the prototype. The correctness of the model is verified by comparing the experimental data with the calculated data. First, the influences of different stator winding turns on the no-load, back-induced electromotive force (EMF), as well as on inductance and overload ability are studied, and the variation mechanism is obtained. In addition, from the perspective of the torque angle characteristic, the influence of the change in synchronous inductance caused by the number of turns on the steady-state power angle is studied. Second, the variation of the current and power factors with turn number is obtained by studying the steady-state power angle and end voltage. Based on the coupling relationship between the no-load back EMF and the power angle, the mechanism of non-linear variation of current and power factor is revealed. Finally, the variation of the number of turns on the core loss and eddy current loss is analyzed under various operating conditions, and the variation mechanism is revealed, based on the armature reaction theory.

scholarly journals Temperature Estimation of Stator Winding in Permanent Magnet Synchronous Motors Using d-Axis Current Injection

Energies ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 2033 ◽  
Author(s):  
Bum-Su Jun ◽  
Joon Park ◽  
Jun-Hyuk Choi ◽  
Ki-Doek Lee ◽  
Chung-Yuen Won
Keyword(s):  
Permanent Magnet ◽  
Estimation Method ◽  
Current Injection ◽  
Stator Winding ◽  
Reliable Operation ◽  
Permanent Magnet Synchronous Motors ◽  
Temperature Estimation ◽  
Synchronous Motors ◽  
Temperature Detection ◽  
Motor Parameter

This paper presents a stator winding temperature detection method for permanent magnet synchronous motors (PMSMs) using a motor parameter estimation method. PMSM performance is highly dependent on the motor parameters. However, the motor parameters vary with temperature. It is difficult to measure motor parameters using a voltage equation without additional sensors. Herein, a stator winding temperature estimation method based on a d-axis current injection method is proposed. The proposed estimation method can be used to obtain stator temperatures and to achieve reliable operation. The validity of the proposed method is verified through simulations and experimental results.

Influence of unbalanced magnetic force on shaft deflection in permanent magnet synchronous motor with fractional slot concentrated windings

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1461-1468
Author(s):  
Ting Dong ◽  
Juyan Huang ◽  
Bing Peng ◽  
Ling Jian
Keyword(s):  
Permanent Magnet ◽  
Magnetic Force ◽  
Permanent Magnet Synchronous Motor ◽  
Operational Reliability ◽  
Topology Structure ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors ◽  
Shaft Deflection ◽  
Large Length ◽  
Fractional Slot

The calculation accuracy of unbalanced magnetic forces (UMF) is very important to the design of rotor length, because it will effect the shaft deflection. But in some permanent magnet synchronous motors (PMSMs) with fractional slot concentrated windings (FSCW), the UMF caused by asymmetrical stator topology structure is not considered in the existing deflection calculation, which is very fatal for the operational reliability, especially for the PMSMs with the large length-diameter ratio, such as submersible PMSMs. Therefore, the part of UMF in the asymmetrical stator topology structure PMSMs caused by the choice of pole-slot combinations is analysized in this paper, and a more accurate rotor deflection calculation method is also proposed.

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