电力传动

E. , the fundamental cause of nonlinear coupled oscillation is the results of the interaction between the several nonlinear factors existing inside the motor, as well ws the mechanical drive, and the converter control system with discrete-sample and modulation.

本文依据理论分析、实验及现场测试研究，详细地分析了电力传动系统中存在的非线性耦合振荡现象，基本弄清了此类非线性耦合振荡的机理，即：电机内部非线性及机械拖动部分存在的多种非线性因素与具有离散采样和调制非线性特性的变流器控制系统之间的相互作用是造成系统非线性耦合振荡的根本原因。

We can say wavelet transform is the effective tool on detecting of electric driving system fault .

可以说小波变换是电力传动系统故障诊断的有效工具。

Power factor correction;topology;control;active power factor correction;zero current switching;boost;average current type

论文导师杜少武，论文学位硕士，论文专业电力电子与电力传动论文单位合肥工业大学，点击次数 14，论文页数 50页File Size2394K

Sparse matrix converter; matrix converter; zero current; waveforms

论文导师朱建林，论文学位硕士，论文专业电力电子与电力传动

YZR range of m otor and inducition eddy-current brake.

重机械中电力传动和调速。

In order to study diesel locomotive AC-DC electric-drive system, this thesis makes a analysis of the primary capability parameters of AC-DC electric-drive system, under the train"s running state, such as traction dynamotor"s voltage/ current, pulling power and train velocity, then makes a research in the ideal running characteristic and the adjust characteristic of dynamotor and the speed adjust characteristic of electromotor with the theory of AC-DC electric-drive.

本文针对内燃机车交-直电力传动系统，对机车运行过程中，传动系统的主要性能指标参数(如牵引发电机电压/电流、牵引力、机车速度等)及其关系进行分析；并运用交-直电力传动原理，对机车电力传动过程中牵引发电机的理想外特性、调整特性及牵引电动机的速度调节特性进行研究；通过参考东风7型内燃机车的性能、结构参数，运用Visual Basic对内燃机车交-直电力传动系统进行数学建模。

This paper describes different characteristics of traction motor for freight electric locomotive and pas-senger electric locomotive.

对客运电力机车和货运电力机车所用牵引电动机的不同特点进行描述，针对货运电力机车的使用特点，提出了速度为120km/h的交流传动电力机车用牵引电动机的设计方案，并指出开发货运用途变频交流异步牵引电动机的必要性。

The design features of standardization, generalization and serialization of main parts on electric locomotive in China are briefed, the current situation of 3 types freight electric locomotive s and 5 types passenger electric locomotives is analyzed, and the necessity of preparing AC DC drive electric locomotive spectrum in China is stated as well.

简述了我国电力机车主要零部件的标准化、简统化、系列化设计特点，分析了货运电力机车3种车型和客运电力机车5种车型的现状，表明了我国交直传动电力机车型谱化的必要性。

Recent years is because of the electric power electronics piece the printing machine for electric power for making, base onning electric power electronics electric circuit converting, calculator technique, micro-electronics technique, network communication waiting technique continuous changes and improvements, adopting have noing the stalk spreading moving technique emerge with the tide of the times, and acquire the quick development, already predominant machine main current of modern printing.

近年由于电力电子器件制造，基于电力电子电路的电力转换，计算机技术，微电子技术，全数字化、网络通讯等技术日新月异，采用无轴传动技术的印刷机应运而生，并获得迅速发展，己主导现代印刷机械主流。

Power consumption due Flange-connection lifting plug valve Acc.to ANSI to electricity transmission much of its traction system no longer uses air-cooled transformer, but rather to use liquid cooling.

因电力传动消耗的功率很大，其牵引系统变压器不再使用空气冷却，而是改用液体冷却。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。