认为发电机转速达到两倍临界转速附近，轴系发生了油膜振荡。
Thought that the generator rotational speed had achieved nearby two time of critical rotation speeds, the shafting has had the oil film vibration.
介绍了BP网络用于船舶发电机转速控制系统传感器故障诊断的方法。
BP networks on fault diagnose of sensor used on generator speed control system of Marine is introduced.
结合神经网络与PID控制，形成船舶柴油发电机转速神经网络控制系统；
Rotation speed control of marine diesel engine generator is built by the combination of neural network and PID control system.
本课题研制电子调速器来控制汽油发电机转速，以降低转速超调，提升发电机性能。
This study develop a Digital electronic governor to control rotate speed of Petrol generator in order to reduce rotate speed fluctuate, improve it's performance.
介绍了风力发电系统的两种形式和并网运行的频率控制、功率控制、发电机转速控制。
Two kinds of wind power generation systems are introduced as well as the frequency control, power control and rotational speed control of generator in parallel operation.
控制装置设有机组集控装置、励磁机交流励磁装置、发电机助磁装 置、发电机转速传感器和风机制动控制器；
The control equipment includes centralized control device for set, AC field system of exciter, device for assisting magnetism (DAM), speed sensor of generator, and braking controller for blower fan.
从发电机转速、功率和直流母线电压之间的相互关系出发，提出利用直流母线电压进行转速观测实现无速度传感器。
According to the relationship of rotational speed, power and DC bus voltage, observing rotational speed by using DC bus voltage is proposed to realize none direct speed measurement.
由于直驱式风力发电机转速较低，定子绕组需要有较多的匝数以输出足够高的电压，因而绕组负载电流的去磁反应较大；
More turns of winding is needed to produce enough voltage because the DPMG rotates at low speed, but the armature reaction is high at same time.
通过计算发电机转速和无功补偿节点电压变化量对各控制器参数的轨迹灵敏度，获得目标函数对各控制器参数的梯度，以便于用共轭梯度法寻找最优解。
Trajectory sensitivity approach is used to assess the gradient of the PSS and SVC parameters on the objective function and then conjugate gradient approach is applied to find the optimum solution.
电厂涡轮发电机组就是一个例子，它主要的目的是维持发电机的转速尽可能的接近于恒值。
An example is the speed control system of a turbine-generator set in a power station, whose main purpose is to maintain the generator speed as nearly constant as possible.
PLC采样发电机的剩磁电压，通过软件编程测取剩磁电压的周期，来获得原动机的点火转速信号。
PLC samples the remanence voltage of generator and measures its period with software to get the signal of fire speed.
飞机发动机转速是变化的，因此由飞机发电机发出的电能是变频交流电。
The speed of aeroplane engine is variational, so the electricity energy that the aeroplane generator gives off is variational frequency communion electric current.
在中小型直流调速系统中，一般都取消了测速发电机，而以电枢电压作为电机转速信号。
In general, tachometer generators are eliminated in the small and medium power DC rotating speed governing systems, and armature voltage is used as motor speed signal.
变桨距是通过改变风力机叶片桨距角来改变风力机的转速，从而调整发电机输出功率。
Pitch angle control system can change pitch, accordingly regulate the rotational speed and output power by adjusting blade incidence of wind-driven device.
测速发电机，提供频率与转速成比例的电流的小发电机。
TACHOMETER generator, a small electric generator for supplying current at a frequency proportional to the speed of rotation.
内置整流器和电压调节器的汽车交流发电机，其建压转速是一项重要的性能参数。
The speed of voltage buildup is an important performance parameter for the automotive alternator.
高精度转速源是为测速发电机的校准测试提供速度基准的驱动系统，具有转速精度高、调速范围宽及无级平滑调速的特点。
The benchmark rev equipment is designed to provide speed reference for tacho generator's testing, which has high velocity precision, wide speed range and stepless speed adjustment.
研究了一种宽转速范围内稳压的组合转子同步发电机。
A new type generator with hybrid rotors was studied, which operated constant voltage over a wide rang of speeds.
普通永磁同步发电机由于励磁不可调，端电压随转速或负载变化而变化，影响了供电品质。
The terminal voltage of a common permanent-magnet generator varies with its rotating speed and load due to its constant permanent-magnet flux, which resulting in unstable quality of power supply.
高功率液压驱动系统测速部分一般采用测速发电机测量转速，但这种方法故障率高，严重影响液压系统的安全稳定运行。
A speed generator is usually applied to measure speed of high power hydraulic machine. But the way has a higher fault rate and affects the safe operation of the machine.
直驱永磁同步风力发电机运行转速低，一般定子外径都比较大。
Direct-driven PMSG works at low speed and its size is generally big.
控制绕组的频率一定时，而发电机的转速在风速下的变化过程。
Control winding frequency of a certain time, while the generator speed in the wind under the process of change.
g在汽轮机不同转速时，测量发电机转子绕阻的绝缘电阻及交流阻抗，功率消耗。
G different speed in the turbine, generator rotor measuring resistance around the insulation resistance and AC impedance, power consumption.
用迭代的方法计算出发电机负载不同转速时的输出电流。
The output current of the alternator at different speed is computed by an iteration method.
传统的PSS使用本地可测量的发电机电磁功率、转速等作为输入信号以抑制低频振荡。
The traditional PSS use the local signal such as the generator electromagnetism power or shaft speed as its input to restrain low frequency oscillation.
这为解决非直联水轮发电机组甩负荷时转速上升的计算和调节负荷时调节系统稳定性的分析等问题提供了一个重要依据。
Thus an important basic is provided for calculation of speed rise when load rejection and for analysis of regulation system stability when load regulation.
分析了汽车发电机抛负载电压的形成过程及其与发电机的相电动势、激磁电流和转速之间的关系。
This paper analyzes the forming process of unloading voltage and the relations among unloading voltage, phase electromotive force, exciting current and rotational speed in art alternator.
这款可靠的直流发电机可根据电枢轴的旋转速度直接提供电压输出值，该设计应用于速度控制应用领域。
These reliable direct current generators provide a voltage output directly proportional to the rotational speed of the armature shaft and are specifically designed for speed control applications.
这款可靠的直流发电机可根据电枢轴的旋转速度直接提供电压输出值，该设计应用于速度控制应用领域。
These reliable direct current generators provide a voltage output directly proportional to the rotational speed of the armature shaft and are specifically designed for speed control applications.
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