单相电动机运转时，产生与运转方向逆方向的转矩，因此不可能在短时间内改变方向。
The single-phase motor has a reverse direction with the totating's when operated.
如果更多的电力需求是间歇性，发动机的功率可补充电动机在电源时，需要更多的时间。
If demand for more power is intermittent, the power of the engine can be supplemented by an electric motor during times when more power is needed.
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 .
定性地分析了在异步电动机间接磁场定向控制中，电机时间常数失配度对异步电动机稳定性的影响。
The influence of the motor time constant mismatch on the stability of induction motors under indirect field-oriented control is analyzed.
主机和电动机通过液力偶合器连接，能够缩短电机起动时间，减少起动过程中的平均电流，防止动力过载。
Main machine and motor connected through the fluid coupling, it can shorten the motor start-up time, reduce the average current during start and prevent overload of the power.
单相电动机运转时，产生与运转方向逆方向的转矩，因此不可能在短时间内改变方向。
The single-phase motor have a reverse direction with the totating's when operated.
只要给予足够的时间，即使是一台小型的电动机也能做到这么多的功。
Even a small motor could do this amount of work if it were allowed a long enough time.
介绍了无刷直流电动机(BLDCM)位置伺服系统离散时间变结构控制器的设计方法。
In this paper the design of a discrete time variable structure controller (VSC) for a brushless DC motor drive (BLDCM) position servo system is introduced.
风机型电动机组启动时间一般较长，对电动机定子、转子导体温升不利。
The startup time for the fan type motor is relatively longer, which is unfavorable to the temperature rise of its stator and rotor conductors.
本文提出了利用轧机主传动电动机微机在线监测保护系统对轧制时间进行检测与统计。
The detecting and statistics on rolling time by using monitor protect system in the computer of main electrical machinery of rolling mill were presented in this paper.
设计电压型PW M变频器时死区时间的设定会造成输出谐波增加、负载电动机转矩脉动，严重时甚至引起电动机震荡。
In the design of voltage PWM inverter, the existence of dead-time will arouse the in-crease of output harmonic, the pulsation of the motor torque, and even the oscillation of the motor.
潜油电动机滑行时间是评定电动机装配质量的重要指标。
The sliding time of the submersible electric motor is one of the important parameter for evaluating the assembling quality of the motor.
采用线性关系表示异步电动机启动阶段转速与时间的关系，计算出立式行星磨的启动时间范围为7.94~10.32s。
The start-up time of the mill is calculated to be 7.94~ 10.32 s by a linear formulation for the rotating velocity-time relationship to be 7.94~ 10.32 s.
采用线性关系表示异步电动机启动阶段转速与时间的关系，计算出立式行星磨的启动时间范围为7.94~10.32s。
The start-up time of the mill is calculated to be 7.94~ 10.32 s by a linear formulation for the rotating velocity-time relationship to be 7.94~ 10.32 s.
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