本文着重论述了在周期性负载下，稀土永磁同步电动机效率与参数之间的相关性。
This paper mainly deals with the relation between energy efficiency and parameters of rare earth permanent magnet synchronous motor (REPMSM)operating under periodical load.
目前变频空调压缩机大多采用感应电动机驱动，而感应电动机效率低，变频控制器比较复杂。
Presently, induction motor is mostly used for frequency-change air conditioner compressor, but it has such drawbacks as low efficiency and complicated controller.
本文介绍了如何通过变频器的模拟量输出来测量变频器的输出功率，进而计算出变频电动机效率的方法。
This paper introduces how to measure output of the inverter by simulating quantity of it, and the method for calculating the efficiency of variable-frequency motor.
在许多情况下，在工业设备中使用由电池电力驱动的电动机比使用柴油发动机效率更高。
In many cases, using electric motors powered by batteries will be more efficient than running diesel engines in industrial equipment.
电动机功率密度大、效率高。
介绍了评估节能电动机经济效益及效率测试的方法。
Last, the evaluation of economic benefit and efficiency test for energy-saving motors are to be introduced.
介绍了通用电动机的现状和损耗与效率的基本知识，以及相关的效率测试标准。
This paper introduces the condition of general motors, knowledge of lose and efficiency, and concerned test standard.
稀土永磁同步电动机具有效率高、功率因数高的特点，是一种高效节能产品。
High efficiency and high power factor are characteristic of rare earth and permanent magnetism and synchronous motor. lt is a energy saving product.
对风机及电动机的电源电压、频率、功率，盘管规格，加湿器种类，空气过滤器形式及效率，配管口径及方向等有要求时请注明；
About the supply voltage, frequency, capacity factor of the fan and motor, specification of coil pipe, kinds of humidifier, form and efficiency of air filter, caliber and direction of pipe and etc.
并提出如何有效地利用电动机来拖动用电设备，提高工作效率。
How to effectively use the motor to drag electric equipment for improving work efficiency is presented.
在系统设计中，机车牵引力通过牵引电动机电压、电流、效率以及机车速度进行计算。
In this system, Traction force can be gained through the motor voltage, current, efficiency and velocity of train.
最后，文章给出了按上述模型建立的异步电动机电磁设计中有关效率目标参数专家决策经验的知识表示实例。
Finally, based on above model, an example of the expert knowledge expression of efficiency object parameter in electromagnetism design of asynchronous electromotor is presented.
本文介绍了异步电动机的效率、功率因数和其他参数的特性。
This paper describes the efficiency, power factor and other parameter features of the synchronous electric motor.
本文简述了三相异步电动机运行中的效率、功率因数、负载率和功率的关系及各种节电措施。
This paper explained in brief the relation of three-phase asynchronous motor among efficiency, power factor, load rate and power and every power saving measures.
仿真计算及实验结果表明该控制方案可以使异步电动机在不同的负载下均呈现出较高的效率，并且兼顾提高功率因数。
The approach, which takes the ratio of the stator voltage to current as the control criterion, improves the efficiency and power factor of asynchronous motors.
有杆泵往复抽油方式常采用机、杆、泵优化的方法来提高系统的整体效率，但易忽略电动机与其他设备的合理匹配。
Rod pumping oil recovery system is applied widely, the optimal method was usually used to enhance the efficiency, but it is easy to ignore that the electromotor matches other fixtures rationally.
使用中，随着流量、扬程发生变化，潜水电泵的效率和电动机功率也相应发生变化，对潜水电泵使用的经济性和可靠性有一定的影响。
In use, with the flow, changes in lift, submersible pump motor efficiency and a corresponding change in power, the use of submersible pump of the economy and have a certain impact on reliability.
讨论了游梁抽油机的变动载荷对电动机的电流、输入功率、效率和功率因数的影响，给出了计算公式。
The influence of variable load on a beam pumping unit on the electric current, input power, efficiency and power factor of the electric motor is discussed, and relevant calculating formulae are given.
本文提出了电流型逆变器-感应电动机变频调速系统中电机驱动恒功率负载时，系统以最大效率运行的节能控制方式。
This paper proposes an energy saving control mode for current source inverter(CSI) induction motor drive system with the motor driving a constant power load.
洗衣机用电容电动机通常有两个绕组，其平均效率仅为52%。
The common capacitor motors for washer have two windings, their average efficiency was only 52%.
在电动机微机保护装置中采用DSP芯片进行开发设计，不仅可以完成电动机综合保护的功能，而且大大提高了处理数据的效率。
Using the DSP in developing and designing the motor-protection device not only realizes the function of general motor protection, but also greatly raises the efficiency of processing data.
此外，该驱动器的性能属性，使该技术用简单直接的驱动装置取代了效率较低的电动机。
Additionally, the actuator's performance attributes enable the technology to replace less efficient electric motors with a simple direct drive device.
由于电动机可以单独更换，提高了维护效率。
Because of the motor can be individually replaced, raise the efficiency of maintenance.
为了解决游梁式抽油机效率低、能耗高和调整参数复杂等问题，研制开发了电动机换向智能抽油机。
To solve the problems of low efficiency and high power consumption and inconvenient parameter adjustment of beam pumping units, a motor-reversing type pumping unit is developed.
异步电动机运行在额定工作状态效率较高，轻载运行时效率就会明显下降。
Efficiency of induction motor at rated operation state is higher and is obviously reduced at light-load operation.
结果表明，试验车的电动机主要工作于低效率区，说明其传动系的参数与整车参数匹配不合理。
The result shows that the motor of HEV6700 works mainly at the low efficient condition and that the parameter of the drive train does not match that of the vehicle.
混合动力汽车是一种用发动机和电动机组合起来共同驱动的低污染、高效率和经济性能好的汽车。
Hybrid electric vehicle, driven by the engine and electromotor, has the virtues of low pollution, high efficiency, and economical performance.
三相电动机以三相电源驱动感应电动机，其效率很高，启动力矩也比较大。
Three-phase motor relies on three-phase supply. It has a high efficiency and can get a high starting torque.
本偶合器传动效率高，可实现电动机软启动，过载保护。
Its advantages are high drive efficiency, soft start of electric motor, and overload protection.
本偶合器传动效率高，可实现电动机软启动，过载保护。
Its advantages are high drive efficiency, soft start of electric motor, and overload protection.
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