根据“等效功率损耗法”推导出实用的电动机负载率计算公式。
According to the equivalent efficiency loss method, the practical formula for motor load rate is derived.
介绍了电动机负载率的几种不同测算法，并举例说明电流法应用的局限性。
The diverse measurements and calculations for asynchronous motor load rate are mentioned and some examples are given to illustrate the limitations of electric current method.
介绍了三相笼型异步电动机负载杂散损耗的四种测试方法，包括三种实测法和推荐值法。
Four kinds of test methods for determining stray-load loss of three-phase cage asynchronous motors were introduced, including three kinds of procedures by measuring and by assuming.
无负载转速是电动机设计过程中的一个重要参数。
No - load speed is one of important parameters in ultrasonic motors design.
一些常见的非线性负载有荧光灯、可控硅电动机启动器以及UPS系统。
Some common nonlinear loads are fluorescent lighting, SCR motor starters and UPS systems.
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.
海水泵电动机当其负载电流接近额定电流时不能满足运行要求，请选择另 一台容量大的电动机。
The se water pump motor is unable to meet the operation requirement when its load current adjacent to its rated current. Please select another one with a large capacity.
海水泵电动机当其负载电流接近额定电流时不能满足运行要求，请选择另一台容量大的电动机。
The se water pump motor is unable to meet the operation requirement when its load current adjacent to its rated current. Please select another one with a large capacity.
同步电动机不但功率因数高，而且其转速与负载大小无关，只决定于电网频率。
Not only high power factor synchronous motor, and its speed is independent of the load, depends only on grid frequency.
典型应用包括电动机控制、负载检测及管理、电源和过流保护。
Typical applications include motor control, load detection and management, power supplies, and overcurrent fault protection.
对电动机在不同性质的负载下，恒电流起动过程中起动时间与电压率、起动电流倍数的关系进行了理论分析。
The paper analyses the relation of the starting-time and the multiple of starting current and voltage in the current-limited starting process of motor with different character load .
实验结果表明，以“被测试电机-直流电力测功机-负载电阻”为结构、基于数字信号处理芯片的感应电动机转矩-转速特性自动测试系统是可行的。
The experimental results demonstrate: the automatic measurement system which bases on the DC dynamometer and DSP can well measure torque-speed characteristic of induction motor.
当加上非线性负载如调速电动机驱动器时，会影响正弦电源。电压波形畸变变成非正弦波。
When nonlinear loads, such as adjustable speed motor drives, affect a sinusoidal power source, the voltage waveform is distorted and becomes nonsinusoidal.
本文对变转速泵控马达液压系统进行了仿真分析，建立了系统中变频器、异步电动机、定量泵、马达以及负载的数学模型。
Simulation analysis was carried out for the variable speed pump-control-motor hydraulic system. Mathematic models of inverter, asynchronous motor, fixed pump and load were set up.
本文将在周期性负载下稀土永磁同步电动机持续稳态的动态特性的状态变量法与相关技术这两种现代分析方法有机地结合在一起。
The state variables analysing method and interrelation analysing method are combined effectively in calculating the sustained steady state dynamic performance of REPMSM under periodical load.
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.
电动机的负载电流不得超过额定值，三相电流平衡。
The electric motor should not overload, three -phase current should be balance.
因此，电动机的“热”在最大负荷，和“酷”在无负载。
这是因为电励磁的同步电动机可通过调节励磁电流来改变其磁场和功率因数，使输出的机械特性与负载特性相匹配。
Synchronous motor excitated magnet by direct current can make output mechanism specialities matched load specialities by means of adjusting exciting current to change magnetic field and power factor.
当采用通用有限元软件对永磁同步电动机进行分析时，存在着电机定转子轴线相对位置未知的问题，而确定这个相对位置是进行电机负载磁场计算的前提。
When using universal finite element software to analyze PMSM, the relative position of stator and rotor axis is unknown, which is the precondition for load field calculation.
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.
液力耦合器是安装在电动机与负载之间的传动装置，它有其独特的工作原理。
The liquid dint matches the machine is to installs at the electric motor with load its spread to move the device, it have its special work principle.
泵、风机类负载通常采用鼠笼式异步电动机拖动，恒速运行。
Pump, air pump and so on generally is pulling by squirrel - cage motor, moving in constant velocity.
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.
装置结合内馈绕线式电动机构成风机、水泵类负载的调速系统，具有极高的性价比。
A high feature and low cost drive system can be composed of this kind of drive combining a internal-feedback wound-rotor induction motor for loads like fans and pumps.
根据计算得到的空载及负载的磁场分布，提出了计算单边永磁直线同步电动机产生的推力和垂直力的方法。
According to the field distributions in no-load and load operations, the methods of calculating the thrust and vertical force in a single-sided PMLSM are presented.
本文介绍电压逆变器的原理，分析带上磁滞同步电动机这一负载后逆变器输出电压电流波形畸变的原因。
It introduces the principle of voltage inverter, analyzed the reason of distortion of output voltage and current wave form, as it is loaded with hysteresis synchronous motor.
在感应电动机无速传感器矢量控制系统中，在负载条件下转子速度估计的精确度对电机内部模型参数误差非常敏感。
The accuracy of the rotor speed estimation in speed sensorless vector control system of induction motor under load is sensitive to parameter errors of the internal machine model.
本文研究交流单相异步电动机作为继电器负载时，继电器闭合与分断时电压与电流的试验条件。
This paper researches the testing requirement of voltage and current when relay closed or opened if the relay loaded AC single phase separate step motor.
本文研究交流单相异步电动机作为继电器负载时，继电器闭合与分断时电压与电流的试验条件。
This paper researches the testing requirement of voltage and current when relay closed or opened if the relay loaded AC single phase separate step motor.
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