Losses Calculation in Line-Start and Inverter-Fed Induction Motors Under Broken Bar Fault

被引：10
作者：
Ebrahimi, Bashir Mahdi [1 ]
Takbash, Amir Masoud [1 ]
Faiz, Jawad [1 ,2 ]
机构：
[1] Univ Tehran, Univ Coll Engn, Sch Elect & Comp Engn, Ctr Excellence Appl Electromagnet Syst, Tehran, Iran
[2] Univ Tehran, Fac Engn, Sch Elect & Comp Engn, Tehran, Iran
来源：
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2013年 / 62卷 / 01期
关键词：
Broken bars; constant voltage per frequency (CV/F); direct torque control (DTC); electromotive force (EMF); induction motor (IM); ohmic losses and core losses; winding function method (WFM) saturation; EDDY-CURRENT LOSS; CORE LOSS MODEL; PERFORMANCE ANALYSIS; AIR-GAP; IRON LOSSES; ROTOR BARS; ECCENTRICITY; DIAGNOSIS; PREDICTION; MACHINES;
D O I：
10.1109/TIM.2012.2212599
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：
In this paper, a new analytical method is proposed for Ohmic and core losses calculation in induction motors under broken bar fault. In this method, new coefficients are introduced to consider non-sinusoidal distribution effects of flux density due to bar breakage. Then, core losses of induction motors in this condition are estimated. In order to calculate Ohmic losses in faulty induction motors, impacts of the bar breakage on the harmonic components of the stator currents are taken into account. Furthermore, influence of the control strategies on the precise determination of the aforementioned losses is investigated in detail. Hence, the constant voltage per frequency and direct torque control methods as global control strategies are applied to the analytical modeling of the induction motor under broken bars. In this modeling approach, the effects of the nonlinear characteristics of the core materials, stator, and rotor slots are taken into account. The simulation results are verified by the 2-D time stepping finite-element method and experimental results.
引用
收藏
页码：140 / 152
页数：13
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