1) three-phase asynchronous motor
三相异步电机
1.
Soft starter is widely used in the starting of three-phase asynchronous motor because of its small starting current and economy of energy sources.
由于电气化铁道采用单相交流供电,目前8G型电力机车辅助系统电机采用电容分相直接起动方式来实现单相供电时三相异步电机的起动,存在着起动电流大和起动转矩不足的问题,致使电机烧损严重。
2.
A new circuit topology based on thyristor control was proposed and discrete frequency control strategy was adopted,which realize soft starting of three-phase asynchronous motor connected to single-phase supply.
提出一种基于晶闸管控制的电路拓扑结构,采用分级变频控制策略,实现了三相异步电机在单相供电条件下的分级变频软启动,并对单相供电与三相供电的软启动方法进行了比较。
2) three phase asynchronous motor
三相异步电动机
1.
The trouble result from single phase operation in three phase asynchronous motor and measures to prevent it were presented.
叙述了三相异步电动机单相运行对电机工作的影响以及如何防止电机单相运行的措施。
2.
The theory is analyzed of restraining harmonic component and saving energy by means of using △-Y mixed winding on the three phase asynchronous motor.
分析了三相异步电动机采用△-Y混合绕组型式抑制高次谐波和降低电机损耗的原理。
3) three-phase asynchronous motor
三相异步电动机
1.
The analysis and eliminatory method of the three-phase asynchronous motor fault;
三相异步电动机故障的综合分析与排除方法
2.
Analysis on working of rest two phases windings in three-phase asynchronous motors with one short-cut phase winding;
三相异步电动机一相绕组短路后另二相绕组组合运行分析
3.
Measuring the slip and rotative velocity of invisible shaft three-phase asynchronous motor with microcomputer;
不可见轴三相异步电动机转差率转速的微机测试
4) three-phase induction motor
三相异步电动机
1.
Research on method for on line testing the working characteristics of three-phase induction motor;
三相异步电动机工作特性在线测试方法
2.
A vertical high-voltage Increased safe three-phase induction motor with air-water cooling and strong-thrust is introduced in this article to meet the request of users and market.
根据用户和市场需求,文章提供了一种增安型大推力立式高压箱式空—水冷三相异步电动机的设计方案,并给出具体的设计和装配方案以及试验结果,为用户提供了选择。
3.
The vibration fault of three-phase induction motor makes the equipment run unsafely.
三相异步电动机出现异常振动,使设备运行存在着不安全隐患。
5) three-phase asynchronous motors
三相异步电动机
1.
Using symmetry to analyse three-phase asynchronous motors running with one phase off;
用对称分量法分析三相异步电动机的断相运行
2.
This paper studied some technical problems arising during the soft starting of three-phase asynchronous motors with heavy loads,which was achieved by means of discrete variable frequency.
针对采用离散变频方式实现三相异步电动机重载软起动过程的一些技术问题进行了分析和研究。
3.
Aim at the faults of three-phase asynchronous motors such as overload, locked rotor,broken phasing,unbalanced supply voltage,ground fault,over-voltage and under-voltage etc.
针对三相异步电动机的过载、堵转、断相、电压不平衡、接地、过压和欠压等外部故障,提出了一种基于BP神经网络的故障诊断方法,测试结果表明了该方法的有效性和正确性。
6) Asynchronous motor
三相异步电动机
1.
Application of PLC in three-phase asynchronous motorcontrolling and protection;
PLC在三相异步电动机控制和保护中的应用
2.
A soft starting controller of the asynchronous motor based upon STC microprocessor is proposed and the operational principle of the controller, functional block diagram are given.
提出一种以STC单片机为控制核心的三相异步电动机软起动控制器,阐述了该控制器的工作原理、回路结构。
补充资料：三相异步电动机
| 三相异步电动机 three-phase asynchronous motor 作电动机运行的三相异步电机。三相异步电动机转子的转速低于旋转磁场的转速，转子绕组因与磁场间存在着相对运动而感生电动势和电流，并与磁场相互作用产生电磁转矩，实现能量变换。与单相异步电动机相比，三相异步电动机运行性能好，并可节省各种材料。按转子结构的不同，三相异步电动机可分为笼式和绕线式两种。笼式转子的异步电动机结构简单、运行可靠、重量轻、价格便宜，得到了广泛的应用，其主要缺点是调速困难。绕线式三相异步电动机的转子和定子一样也设置了三相绕组并通过滑环、电刷与外部变阻器连接。调节变阻器电阻可以改善电动机的起动性能和调节电动机的转速。 |
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条