Modeling and Analysis of Unbalanced Magnetic Pull in Cage Induction Motors With Curved Dynamic Eccentricity

被引：26

作者：

Di, Chong ^{[1
]}

Bao, Xiaohua ^{[1
]}

Wang, Hanfeng ^{[1
]}

Lv, Qiang ^{[1
]}

He, Yigang ^{[1
]}

机构：

[1] Hefei Univ Technol, Sch Elect Engn & Automat, Hefei 230009, Peoples R China

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2015年 / 51卷 / 08期

关键词：

Curved dynamic eccentricity; finite-element method; induction motor; unbalanced magnetic pull (UMP); FINITE-ELEMENT-METHOD; ROTOR ECCENTRICITY; GENERATOR; MACHINES;

D O I：

10.1109/TMAG.2015.2412911

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The unbalanced magnetic pull (UMP) often occurs in different kinds of electrical machines. In induction motors, UMP is usually caused by air-gap eccentricity, which is generally divided into static eccentricity, dynamic eccentricity, mixed eccentricity, and inclined eccentricity, also known as rotor misalignment. However, it has been verified that the curved dynamic eccentricity always occurs to some extent where the shaft in the majority of large electrical machines is bent, such as submersible motors. The curved dynamic eccentricity is defined as a condition in which the degree of dynamic eccentricity varies along the axial direction, and the eccentricity in the middle part of the motor is larger than that of the ends. Therefore, this paper presents a new method to calculate the UMP in cage induction motors, considering the curved dynamic eccentricity. Finite-element method is adopted for verification.

引用

页数：7

共 18 条

[1]

Akiyama Y., 1992, P IEEE IND APPL SOC, P107

[2]

Behrend B. A., 1900, TRANS AM INST ELECTR, V17, P613

[3] CALCULATION OF THE FLUX-DENSITY AND THE UNBALANCED PULL IN 2 POLE INDUCTION MACHINES [J].

BELMANS, R ;

VANDENPUT, A ;

GEYSEN, W .

ARCHIV FUR ELEKTROTECHNIK, 1987, 70 (03) :151-161

[4] Analysis of Eccentricity in Permanent-Magnet Tubular Machines [J].

Cappelli, Luigi ;

Coia, Yuri ;

Marignetti, Fabrizio ;

Zhu, Z. Q. .

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 2014, 61 (05) :2208-2216

[5]

Covo A., 1954, Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems, V2, P1421

[6] Analysis and effects of inter-bar current and skew on a long skewed-rotor induction motor for pump applications [J].

Dorrell, David G. ;

Holik, Piotr J. ;

Rasmussen, Claus B. .

IEEE TRANSACTIONS ON MAGNETICS, 2007, 43 (06) :2534-2536

[7] Sources and Characteristics of Unbalanced Magnetic Pull in Three-Phase Cage Induction Motors With Axial-Varying Rotor Eccentricity [J].

Dorrell, David G. .

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 2011, 47 (01) :12-24

[8] Unbalanced Magnet Pull in Large Brushless Rare-Earth Permanent Magnet Motors With Rotor Eccentricity [J].

Dorrell, David G. ;

Hsieh, Min-Fu ;

Guo, YouGuang .

IEEE TRANSACTIONS ON MAGNETICS, 2009, 45 (10) :4586-4589

[9] Calculation of unbalanced magnetic pull in small cage induction motors with skewed rotors and dynamic rotor eccentricity [J].

Dorrell, DG .

IEEE TRANSACTIONS ON ENERGY CONVERSION, 1996, 11 (03) :483-488

[10] A time-stepped 2D-3D finite element method for induction motors with skewed slots modeling [J].

Dziwniel, P ;

Piriou, F ;

Ducreux, JP ;

Thomas, P .

IEEE TRANSACTIONS ON MAGNETICS, 1999, 35 (03) :1262-1265

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