转差率

当电力机车上一台转向架的两个轮对分别各由一台异步牵引电动机带动，并由同一台逆变器供电时，牵引电动机的额定转差率Se对电力机车的性能将产生巨大的影响。

The normal slip Se of an asynchronous traction motor would exert a tremendous influence to the locomotive performance , especially when two wheel-axles of a bogie are driven respectively by two asynchronous motors fed merely from an inverter .

基于转差率的感应电机最优效率控制

Slip frequency based optimal efficiency control of induction motor

通过对一般化感应电机数学模型的分析，提出一种改进的电机模型，该模型使转子电流ir与转差率S呈线性变化，实现了电磁转矩和转速之间的线性关系。

A improved motor model is proposed by analyzing general inductive motor mathematics model . The model makes rotor current is linear with slip ratio and realizes linear relation between electromagnetism torque and rotation rate .

当感应电机转子发生断条故障时，转子绕组的不对称将会使电磁转矩中引入2s同步速的脉动转矩（s为转差率）。

Researches show the asymmetry of the rotor caused by broken bar fault will give rise to the appearance of additional frequency component of 2sfs ( s is slip and fs is supply frequency ) in the electromagnetic torque spectrum .

不可见轴三相异步电动机转差率转速的微机测试

Measuring the slip and rotative velocity of invisible shaft three-phase asynchronous motor with microcomputer

软起动器的节电原理及其特征转差率的计算方法

The principle of soft-starting controller with energy saving and computing method of motor 's characteristic slip ratio

高转差率特种三相异步电动机转子新材料变质处理试验研究

The study on the modification of new material used for high slip and special threephase asynchronous motor rotors

具有起动转矩大，起动电流小，转差率高和机械特性软等特点。

It has the features of long torque , small current , high rate transfer and mechanical soften .

并联工作电机负荷不平衡受轮径差影响极大，与电机转差率相关。

The unbalanced load of parallel motors are large influenced by wheel radius deviation and are relative to motor slip deviation .

提高异步机的效率可降低其转差率，从而改善系统动态频率特性的结论。

Conclusion is reached as : increasing the efficiency of asynchronous motor can recede its slip and improve dynamic frequency characteristics .

在异步电机轻载和小转差率情况下，利用该方法对转子断条故障进行诊断，取得了较好的效果。

In the condition of light burden and little speed difference ratio , the results based on the method are satisfactory .

电机转差率通常表示为旋转磁场转速的百分比。

Slip steady economy power research for induction motor Slip is more usually expressed as a fraction of rotating magnetic speed .

仿真和试验结果表明，特征转差率所对应转速运行下的三相异步电动机能够获得最佳的节能控制效果。

Simulating results show that the three phase asynchronous motor can get optimal energy control effective under characteristic slip corresponding to rev .

特别研究了再生制动、高转差率制动和能耗制动等电气制动形式在直线电机地铁车辆中的应用。

And it concentrates on electrical brake of linear metro vehicle , including regenerative brake , high slip brake and dynamic brake .

文中除对上述功能的实现一一叙述之外，还介绍了用梯形波调制和转差率反馈控制改善交交变频器电网功率因数的方法。

Besides , the method to improve power factor in the network by means of trapezium waveform modulation and slip feedback control is also described .

文章首先从普通异步电机出发，推导并给出了无刷双馈电机三个转差率的明确定义和简单计算方法。

This paper deduces and gives clear definition and simple calculation method of three slips of brushless doubly-fed machine starting from general induction machine first .

首先通过分析同步电动机异步起动过程中，平均转矩和脉振转矩的变化规律，得到同步电动机投励时的转差率；

Frist through analyses rule of average torque and nervation torque of synchronous motor during its asychronous starting , receives the slip ratio of giving current ;

采用高转差率电动机，并增加旋转件的转动惯量，是综合提高游梁式抽油机节能效果的有效途径。

Adopting high slip motor and increasing the rotary inertia of the rotating parts is an effective approach to achieving good power saving effect of beam pumping units .

本文以电路基本理论为基础，讨论了三相异步机单相运行时裂相元件类型的确定问题，推导了元件参数与电机等效电路参数及给定转差率间的关系式。

Based on the elementary circuit theory , this paper discusses what types of splitting phase circuit elements are used in three phase induction motors with single phase source .

为高转矩、高转差率的电机转子找到了一种既满足电阻率要求，又具有好的铸造性能和好的力学性能的铝合金配方。

A new kind of aluminium alloy with satisfactory resistivity and good casting properties and good mechanical properties for motor rotors with high torque and high slip is found .

本文提出了考虑铁损的异步电机数学模型，讨论了矢量控制和最大效率控制的关系，并且推导出了异步电机在任意角频率ω1，时对应的最优转差率公式。

This text puts forward induction motor mathematics model considering iron loss , discusses the relationship of vector control and maximum efficiency control , and has derived out the optimum difference rate formula in random angle frequency .

重点研究了不同转差率下双馈同步电机在发电、电动和电磁制动三种工况下的稳定区域、功率流及其高效区域。

From this point of view , the focus of the study are the stable regions , the power flows and the high efficiency areas of the DFSM for different slip under generating , motoring and braking conditions .

进而通过磁路分析，研究了等效电路参数与感应电势之间的非线性关系，以及铁耗、定转子铜耗与转差率的非线性关系。

Then , the nonlinear relationship between the parameters of equivalent circuit and EMF is investigated by analyzing the magnetic circuit , and the relationship between the iron losses , copper losses and the slip is analyzed as well .

在此基础上，首次将连续细化傅里叶变换、自适应滤波、转子齿槽谐波转差率估计、检测阈值自整定技术有机结合，形成了笼型异步电动机转子断条故障检测新方法。

Finally , a novel scheme to detect broken rotor bar fault , which perfectly blends continuous subdivision Fourier transform , self-adaptive filter , rotor slot harmonics based slip estimation and detection threshold self-tuning technique , is proposed in this paper .

本文从双馈交流励磁变速电机的数学模型出发，推导了有功功率、无功功率和电磁转矩的表达式，指出交流励磁容量与电机转差率的关系。

Based on the mathematical model of doubly-fed AC excitation variable-speed induction machines , this paper presented the expressions of active power , reactive power and electromagnetic torque . It also gave the relationship between AC excitation capacity and the slip of electric machine .

本文还讨论了谐波对感应电动机绕组磁动势、旋转磁场的转差率、转矩以及铜耗的影响，为感应电动机变频调速系统的设计、电机供电电压谐波分析及附加损耗计算提供了参考。

The paper discussed on induction motor winding harmonic MMF , rotating magnetic field an induction , torque and the influence of copper consumption for induction motor , the design of variable frequency speed regulation system , motor power supply voltage harmonic analysis and additional loss calculation provides reference .

对异步电动机起动过程中阻抗变化曲线进行了深入分析，根据转差率与机端测量阻抗的变化特性，给出了起动过程中堵转的判定方法。

This paper deeply analyzes the impedance curve of the asynchronous motor starting process , and according to the characteristic that the measurement impedance of a asynchronous motor changes with the slip ratio , presents a criterion to judge locked rotor during the starting process of the asynchronous motor .