Analysis and Suppression of Rotor Eccentricity Effects on Fundamental Model Based Sensorless Control of Permanent Magnet Synchronous Machine

Wu, Ximeng; Zhu, Z. Q.; Wu, Zhongze; Liu, T. Y.; Li, Y. X.

doi:10.1109/tia.2020.2997297

Cited by 23 publications

(8 citation statements)

References 23 publications

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“…By measuring the phase current, impedance, and sensor, the type of rotor eccentricity can be distinguished by using the deviation of the amplitude [23][24][25][26][27][28]. Next, a control technique is used to solve the unstable motor performance caused by rotor eccentricity with various diagnostic methods [29][30][31][32]. Owing to the current imbalance caused by rotor eccentricity, current harmonics are injected using the inverter and control [33].…”

Section: Introductionmentioning

confidence: 99%

Diagnosis and Robust Design Optimization of SPMSM Considering Back EMF and Cogging Torque due to Static Eccentricity

Park

Kim

et al. 2021

Energies

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Static eccentricity (SE) is frequently generated by manufacturing processes. As the nonuniformity of the air-gap length is caused by the SE, the torque ripple and cogging torque increase in the motor. This study analyzes the distorted back electromotive force (EMF) and cogging torque due to SE. Further, a motor design considering SE is performed for stable back EMF and low cogging torque. First, the SE was diagnosed and analyzed using the back EMF and cogging torque measured from the test results of the base model. In addition, the rotor position was calculated using the unbalanced back EMF due to the SE. The calculated rotor position is used when analyzing phenomena due to SE and applied to robust design. Subsequently, robust design optimization was performed to improve the unbalanced back EMF and cogging torque due to SE. Using finite element analysis (FEA) considering SE, the shape of the stator was designed based on the base model. The estimated rotor position from the base model was applied to the optimum model to confirm its robustness from SE’s effects. Finally, the base and optimum models were compared through the test results.

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Section: Introductionmentioning

confidence: 99%

Diagnosis and Robust Design Optimization of SPMSM Considering Back EMF and Cogging Torque due to Static Eccentricity

Park

Kim

et al. 2021

Energies

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“…Any actual situation of air-gap eccentricity is a different combination of static and dynamic eccentricity [20][21][22]. A schematic diagram of air-gap eccentricity is shown in Figure 1.…”

Section: Geometric Structure Of Air-gap Eccentricitymentioning

confidence: 99%

Static Eccentricity Fault Analysis of Surface-Mounted Permanent Magnet Electromotor with Skewed Slots Based on 2D FEA

Wang

2021

WEVJ

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It is of significance to analyze the performance of eccentric electromotor for the research on the electric vehicle wheel drive system’s operational reliabilities. We developed a fast equivalent algorithm in which the two-dimensional finite element calculation results are translated into three-dimensional calculation results. An electromotor with skewed slot was decomposed into straight-slot electromotor units that were series-wound. A prototype electromotor driven by square wave current under healthy and eccentric conditions was calculated, and the computation accuracy of the equivalent algorithm was analyzed. The air-gap magnetic field and induced electromotive force were calculated and contrasted. The study results indicate that the magnetic field distribution and the induced electromotive forces of winding elements with different axis positions were affected transparently by grievous eccentricity, yet the induced electromotive force of one phase winding and average value of torque remained virtually invariable. The reference to reliability analysis of electric vehicle wheel drive system is provided.

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“…One of the promising applications is that of electric traction, case of electric vehicle PMSMs are the most widely used in the field of motion control applications. This main is because reasons of their high-power density and high efficiency [21,22].…”

Section: Application For Electric Traction Drive Based On Pmsmmentioning

confidence: 99%

Novel Topology of a Multilevel Inverter Dedicated to Electric Traction Drive

Kerrouche¹,

Tazerart²,

Taib³

2020

EJEE

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Nowadays, research on the design of new power converter topologies, more precisely multilevel inverters, has greatly intensified due to reduced harmonic distortion rate. The multilevel inverters topologies with fewer switches are most appreciated and appropriate in embedded systems because of their small encumbrance, cost reduction and greater efficiency. In this paper, a contribution to the design of a new multilevel inverter topology with only six controllable switches to build three-phase seven-level inverter is presented. The proposed topology provides very interesting features that makes it more suitable for embedded systems, particularly in electric traction drive such as a reduced number of switches. The topology is based on a combination of three-level elementary modules. The proposed converter is tested by simulations on an inductive load and a controlled PMSM vehicle actuator. The obtained results show the effectiveness of the proposed topology.

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Analysis and Suppression of Rotor Eccentricity Effects on Fundamental Model Based Sensorless Control of Permanent Magnet Synchronous Machine

Cited by 23 publications

References 23 publications

Diagnosis and Robust Design Optimization of SPMSM Considering Back EMF and Cogging Torque due to Static Eccentricity

Diagnosis and Robust Design Optimization of SPMSM Considering Back EMF and Cogging Torque due to Static Eccentricity

Static Eccentricity Fault Analysis of Surface-Mounted Permanent Magnet Electromotor with Skewed Slots Based on 2D FEA

Novel Topology of a Multilevel Inverter Dedicated to Electric Traction Drive

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