本装置采用的判据是反应转子电压变化量,与传统的转子判据不同。
The response of the rotor voltage variation is taken as the criterion which is different from the conventionally used ones.
介绍了5号发电机的主要设计规范及其励磁系统组成,分析了如何处理5号发电机在运行过程中出现的转子电压摆动的异常现象。
5 generator rotor and the composition of its excitation system, analyzes how to treat the abnormal phenomena of rotor voltage swing appearing in the running process of no.
通过对定子电压方程做有条件的简化,得到一种转子磁通观测算法。
Through simplification of stator's voltage equation, a method for observing the flux of rator is obtained.
失电残压在有些情况下是可以利用的,本文对利用失电残余电压诊断异步电机转子绕组故障进行研究。
However, RVACD can be utilized in some cases, diagnosis of rotor winding for asynchronous motor is researched by RVACD.
其参数是通过在系统扰动过程中的发电机电压、电流和转子角等数据而得到的。
The parameters are calculated from the data of small perturbations of the generator voltage, current and rotor angle during system disturbances.
研究了电网电压升高或降低时转子温度场的变化情况。
The alteration of the rotor temperature field is analyzed when voltage increases or decreases.
在低速范围内,对无传感器感应电动机进行矢量控制时用定子电压和电流推算转子磁通是比较困难的。
The sensorless of induction motor field-oriented control employing stator voltages and currents has difficulty in estimating rotor flux in the low-speed range.
在分析了该系统控制方法的基础上,建立了交直交变频器网侧电压定向以及转子侧定子磁场定向的矢量控制系统模型。
Based on the analysis of control strategy of the system, this paper used respectively voltage oriented and stator flux oriented vector control in grid side and rotor side of the converter.
并且进行编译调试,验证了电压计算、转子磁链观测以及SVPWM输出等子程序的正确性。
The system proved its validity of subprograms which include voltage calculation module, rotor magnetic chain observation module and SVPWM output module.
本文对铁磁实体转子隐极同步电动机异步起动时的转矩与电压关系进行了研究。
This paper studied the relationship between torque and voltage, when the solid rotor synchronous motor involving non salient pole started asynchronously.
在系统发生功率振荡时,通过改变转子励磁电压的相角调节双馈变速风电机组输出与振荡相关的阻尼功率,达到使风电场能够改善系统阻尼的目的。
During the power oscillation of a power system, a damping active power is injected into the network from the DFIG machine via regulating the rotor excitation voltage Angle.
针对感应电机无速度传感器磁场定向控制系统,提出一种基于电压模型的改进转子磁链观测方法。
An improved rotor flux estimator based on voltage model was proposed for speed sensorless field-oriented vector controlled induction motor drives.
最后,利用DSP相关软件,对转子初始位置估算方法进行模拟仿真,验证了高频电压信号注入法理论的正确性。
Finally, the paper simulated to the rotor initial point estimate method using DSP related tool and confirmed the accuracy of high frequency voltage signal method.
基于交流阻抗和两极电压试验数据的分析,发现发电机转子绕组因存在铜渣而造成匝间短路故障的原因。
Based on the analysis of AC impedance and two poles voltage test data, the reason of turn - to - turn short circuit fault caused by having copper dregs in generator rotor winding was found.
分析了轴电压吸收回路以及接地碳刷与大轴间接触电阻对发电机转子接地保护的影响,并分别提出了相应的对策和注意事项。
This paper analyzes the influences of shaft voltage absorbing circuit and brush touching resistance on the performance of generator rotor earth fault protection.
最后,探讨了旋转、脉动高频电压信号注入法下定子电阻对转子位置估算影响的问题。
Finally, the stator resistance effect of rotor position estimation in high frequency voltage signal injection is investigated.
推导了转子外加电压与电机转速、定子侧功率因数之间的关系。
Deduce the relationship between rotor voltage and DF -ig speed or power factor.
因此,在一些特殊及精度要求不高的场合,由只根据采样电流、电压等易测量,通过特定方法估算转子位置和转速的无位置传感器控制策略将得到广泛应用。
Thus, sensorless control strategy which only according the sampling of the current and voltage to estimate the rotor position and speed by specific methods will be widely applied.
转子和定子成品然后装配进中央电机壳装置内。随后电机总成需经过高电压测试。
The finished rotor and stator unit is then assembled into a central motor housing unit. The motor assembly is then subjected to a High-Potential (Hi-Pot) Test.
他们都要求监控的电流、电压(流量观测),然后运用知识的磁特性、转子位置所决定的。
They all require monitoring of the phase current and applied voltage (flux observation), then by using knowledge of the magnetic characteristics, the rotor position is determined.
产品一经出厂,它是按照电机转子的电压、电流初步判断电机负载情况已配制好的液阻。
Once the product is ex-work, the motor load condition shall be judged initially based on the rotor voltage and current, and liquid resistance will be ready.
为此,提出了防范此类事故的对策,建议引入励磁变压器电源作为调节器的工作电源,并对该机组的转子过电压保护进行改造。
It is suggested that the excitation transformer power be introduced as the operational power supply for the regulator, and the rotor overvoltage protection of the unit be modified.
根据异步电机转子磁场定向控制的基本方程序,对直接磁场定向矢量控制系统,设计了结合电压模型和电流模型优点的磁通观测器模型。
According to the fundamental equations induction motor for the field oriented control, a new rotor flux model combine with the merits of voltage model and current model is presented.
电路方程用于描述定子绕组连接及转子导条和端环连接,电压源可以是任意电压波形。
The circuit equations were used to describe the winding connections to support voltage source with arbitrary waveform.
其次,探讨了一种新的永磁同步电机转子初始位置估算方法——高频电压信号注入法。
Next, it puts forward a new permanent magnetism synchronous machine rotor initial point estimate method - High frequency signals injection method.
从法国进口的300MW发电机转子存在匝间短路和过电压保护问题。
Rotors of 300mw generators imported from France are afflicted by problems concerning short circuit between windings and overvoltage.
就转子过电压危险的程度而言,隐极同步发电机比凸极同步发电机要小。
So far as the dangerous level of rotor overvoltage is concerned, no-salient pole has a small value by comparison with salient pole synchronous generator.
在IP引脚电压从VREF降低至 VREF / 2期间,在阶段(a)转子在直流励磁模式下对准某一指定的位置。
The rotor is aligned to a certain position specified in DC excitation mode for the period of (a), during which the IP pin voltage decreases from VREF to VREF/2 level.
HMGB11A型灭磁及转子过电压保护装置经实践检验,效果良好,减少了工作量,提高了发电机的可靠性。
The effectiveness of HMGB11A type ME an ROVP is proved in engineering practice. Workload is reduced and generator's reliability is improved.
HMGB11A型灭磁及转子过电压保护装置经实践检验,效果良好,减少了工作量,提高了发电机的可靠性。
The effectiveness of HMGB11A type ME an ROVP is proved in engineering practice. Workload is reduced and generator's reliability is improved.
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