空载

The first harmonic winding and harmonic winding no-load property curve are gained when field current is change.

通过改变励磁电流的大小，得到了基波绕组和三次谐波绕组的空载特性曲线。

The wave of the harmonic winding voltage and the no-load characteristics curve of the harmonic excited synchronous generator.

得出了谐波励磁同步发电机的旋转磁场波形、谐波绕组电压波形以及谐波绕组空载特性曲线。

And a new method ,named three-segment method , is present to analysis harmonic winding no-load property curve for synchronous generator by third harmonic excitation.

并提出了一种分析三次谐波励磁同步发电机谐波绕组空载特性的新方法——三段法。

Idle, jobless, out of work idlesse

n。 空转空载，无效，慢车，低速轧制

Simulation and experimental results indicate that for the SPWM inverter based on instantaneous output voltage feedback control,the fundamental open circuit output voltage incr...

仿真和实验结果表明，对于采用瞬时输出电压反馈控制技术的SPWM逆变器，其输出电压在空载时随着死区时间的增加而增加，负载电流超过临界电流后其输出电压随死区时间增加而下降；其阻性负载时的外特性曲线是一条先下降后上升的曲线。

Hook empty-load, outward travel at low speed and extreme position limiting at max radius is 5m jib(outward R=50m,inward R=7.5m), enable one switch of the radius limiter(outward and inward travel is controlled by its parting limiter switch), when the trolleying to and extreme position limiting at max radius, enable another limiter switch(ourward and inward limiter switch), then trolley stop travel, when travel it again, the trolley just travel in the center of the jib frame.

4.4.3 幅度限位器调整(结构调整方法见外购件说明书) adjusting method for radiuslimiter(the procedures is shown as the outsourcing instructions)(1)吊钩空载，以低速档运行，向外行至距最大幅度处5 米时(向外时 R=50 米，向内时 R=7.5 米)，幅度限位器中的一个开关恰好动作(向外，向内分别由一个限位开关控制)，当小车行至最大幅度时，另外一个限位开关动作，小车停止运行，再启动时，小车只能往臂架中央运行。

At the same time ,the sample machine's distribution diagram of the magnetic line of force and the sample machine's wave of the flux density in the air gap are given.

通过对同步发电机的电磁场计算结果进行后处理，得出了同步发电机的旋转磁场波形、电压波形以及空载特性曲线。

It is stated that it is not a easy thing to determine the precise value of the small cogging torque using the magnetic field numerical calculation method.

利用二维有限元法，解算了新型交流伺服电动机的空载场，并以此为基础，计算了电机的定位转矩，旋转感应电压和静转矩。

The method of how to analyze the electromagnetic field of the generator is introduced. And with the help of a kind of FEM software, the parameters of a model machine are calculated and simulated, including the electromagnetic field, no-load voltage, single-side magnetic force, loaded torque and axial force.

其次，对转子带防护罩的高速永磁发电机数学模型进行了推导，介绍了利用有限元法对电机磁场进行分析的方法，并运用有限元软件对一台样机的参数进行了仿真，包括电机磁场分析、空载电压波形、单边磁拉力、负载转矩以及轴向力等方面的内容。

The main dimensions are calculated by magnetic track, then the fields of load and without load are computed by 2-d FEM and references of the motor are obtained, so the structure of the motor can be adjusted.

用磁路设计法确定电机的主要尺寸，然后用二维有限元法计算电机的空载和负载磁场分布，得到电机的参数和性能，根据性能要求对电机结构尺寸调整。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。