电动机

Companies leading products for Y80-355 aircraft Zuohao three-phase asynchronous motor and more than 20 spin-off series dedicated motor.

公司主导产品为Y80-355机座号三相异步电动机及二十多个系列的派生专用电动机。

ZQDR-310 traction motor is produced in home,a 4-poles series-wound motor with forced ventilation,mainly used in narrow-railway gas engine locomotive in home and overseas.

ZQDR-310型牵引电动机是国内生产的为窄轨内燃机车配套的串激四级强迫通风电动机，主要用于国内外窄轨内燃机车。

This text make deep analysis and design to single winding many speed electronic electromechanical motive.

本文是对单绕组多速电动机电动机做出深入的剖析与设计。

An automatic dipping production line machine equipment mainly comprises a liquid pool, a thermostated container, a curing oven, a heating cabinet, an air heating cabinet, a high pressure air heater., an air cooler, a column, a motor, a gearbox, a sprocket, a guiding wheel a supporting wheel, dual chains, a chain hanging scroll, a dedicated cradle, a vibratory pump, a dead lever, a wind plate and so on.

一种自动浸渍流水线设备，主要由液体池、恒温箱、固化箱、加热箱、空气加热箱、高压热风机、冷风机、立柱、电动机、变速机、链轮、导向轮、托轮、双链条、链条挂轴、专用挂篮、振动泵、固定杆、挡风板等构成，通电后，电动机驱动变速机使链条通过导向轮的定位导向，使待浸渍防潮液的物品的浸液、除余液、固化等工序自动连续完成，挡风板控制着热量的循环利用，具备优质高效、环保节能，是物品防潮浸渍的理想自动化流水线设备。

Series motor is totally enclosed and fan-cooling three-phase squirrel cage induction motor,which is newly designed inconformity with the relevant requirement of IEC stand ards.

系列电动机是全封闭自扇冷式绎笼型三相异步电动机，是最新设计的基本系列，符合IEC标准的有关规定。

According to the local electricity supply, electricity supply reliable motor areas should be elected, the general selection of squirrel-cage type, only in the power grid capacity is very small, not enough to guarantee the squirrel cage motor starting, the only consideration to use Wound.

根据当地的供电情况，供电可靠的地区应选电动机，一般选用鼠笼型，仅在电网容量很小，不足以保证鼠笼型电动机启动的情况下，才考虑选用绕线型。

Three-phase squirrel-cage induction motor in its structure is simple, cost-effective and of good work, and many other advantages, in today's industrial applications in various fields have a wide range of applications, but it is an obvious shortcomings, is the starting current too big ( General starter for the rated current of the current five to seven times or even greater), so regardless of the motor itself, or the power grid and other electrical equipment, will have a negative impact.

留学解答资讯网：三相鼠笼式异步电动机以其结构简单、性价比高和工作特性好等诸多优点，在当今工业应用的各个领域都有广泛的应用，但它有一明显缺点，就是起动电流过大(一般起动电流为额定电流的5～7倍甚至更大)，这样不论是对电动机本身，还是对电网以及其他电气设备，都会产生不利的影响。

To control speeds for a typical alternating current motor we usually take control variables (to change voltage and frequency of the stator power supply) from the stator side in an electric motor which is also the only way for squirrel-cage asynchronous motor with rotor in a short-circuit state.

对于一般交流电动机的调速，我们都是从电动机的定子侧引入控制变量（改变定子供电电压、频率）来实现的，这对于转子处于短路状态的交。。。

Aimed at the problem of choosing the initial value when the Newton method is used to compute the controlling unstable equilibrium point, a practical and rigorous solving scheme was presented: by identifying the controlling load bus of the given fault, and using the Thevenin equivalent circuit to represent the rest of the system at the state of the post disturbance stable equilibrium point, using the steady equivalent circuit to represent the induction motor in composite load, and then using the torque characteristics of induction motor, a point near the CUEP is gained to be the initial value. The second order normal forms was used to approximate the stable manifold of CUEP, and the local approximating boundary of the region of attraction of the post disturbance stable equilibrium point was gained. Then just by simulating the state of the system at the fault clearing time, the transient voltage stability of the system could be determined.

针对采用牛顿法求取故障后系统主导不稳定平衡点(controlling unstable equilibrium point，CUEP)存在的初值选取难题，提出一种实用但不失严谨的解决方案：通过识别给定故障的主导负荷母线，对主导负荷母线以外系统由故障后稳定平衡点处的状态进行戴维南等值，对负荷中感应电动机部分采用其稳态等值电路，再由感应电动机的转矩特性求得CUEP附近的一个点作为近似的CUEP，以此为迭代初值可靠求得CUEP；采用二阶正规型来近似CUEP的稳定流形的方法求得近似的局部吸引域边界；由仿真得到故障清除时刻系统的状态并根据该状态是否位于吸引域内判断系统的暂态电压稳定性。

Then can weld starting the resistance directly on the rotor winding, and cancel collecting the electric ring and electric brush.

将定子一种极数的磁场感应于转子绕组中的电流，通过集电环和电刷，但由另一种极数的磁场感应的电流，却自动流经另一闭合回路，而不通过集电环和电刷：于是，如果后一种极数是电动机的工作基波磁场，而把前一种极数作为用以起动的谐波磁场，则可以把起动电阻直接焊接在转子绕组上，而把集电环和电刷取消，从而出现了转子电路上无集电环、无电刷、无触点的谐波起动绕线型感应电动机。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。