查询词典 application generator

The main body of a book have analysed a generator losing the magnetism physics process , have given a generator out the fundamental equation losing the magnetism queen; By using simulated module of electric system in Matlab/Simulink,build a single infinity system emulation model , have included module such as generator , excitation system , transformer , idle work power source , circuit loads , infinity system , transmission line; Lose magnetism condition two kinds specifically for the excitation winding loses magnetism and the part completely losing magnetism, lower emulation having carried out different working condition, have gained machine holding stater voltage , have encouraged the magnetoelectricity stream , excitation voltage and output having performed meritorious service power wave form change condition; By simulated wave form of contrast , to every electricity amounts, change law has carried out theoretical analysis.

本文分析了发电机失磁的物理过程，给出了发电机失磁后的基本方程；通过使用Matlab/Simulink中的电力系统仿真模块，建立一个单机无穷大系统仿真模型，包括了发电机、励磁系统、变压器、无功电源、线路负载、无穷大系统、输电线路等模块；针对励磁绕组完全失磁和部分失磁两种失磁情况，进行了不同工况下的仿真，获得了机端定子电压、励磁电流、励磁电压和输出有功功率波形的变化情况；通过对比仿真波形，对各电气量变化规律进行了理论分析。

The system description is concentrated on units' function. The principle of induction generator describes how to generate electric power from induction motor and the difference between synchronous generator and induction generator. The design of induction generation system is focus on a 80kW biogas induction generation and controlled parallel panel. Finally, the peripheral unit design is interesting in biogas storage tank, hot air duct and safety device .

系统描述针对感应式沼气发电系统所需设备的功能说明；感应发电机原理机针对马应马达与发电机之运转模式说明，并比较同步式与感应式发电机之差异；感应发电系统设计则针对80kW感应式沼气发电系统所需发电机组、保护并联盘设计说明；周边设施包括沼气储袋、引擎热风导管及沼气安全装置。

The ground faults in the generator stator and rotor are common and always the premonitory of the internal fault of generator, which may make great damage to the generator.

发电机定子、转子接地故障是发电机常见故障，而且往往是更为严重的发电机内部故障的先兆，严重威胁发电机的安全。

With the reformational spring tide and rapid progress of separating air enterprise, Chuangwen people have improved the quality much more with trial and error and the surefooted and innovative spirit. We have excogitated the PSA nitrogen generator, PSA oxygen generator, Membrane separating nitrogen generator, No heat regeneration dryer, Nitrogen sanctifier, Hydrogen sanctifier, Efficiently oil filter and muffler etc.

伴随着我国改革大潮和空分事业的蓬勃发展，创文人以脚踏实地的探索、追求、创新精神，经多次反复实验、改进、使产品质量提高到更高的专业水平，并创下了引人注目的业绩，开发出了：PSA制氮机、PSA制氧机、膜分离制氮机，无热再生干燥器、氮气净化器、氢气净化器、高效除油过滤器、消声器及其他非标产品等。

Based on generator self excitation theory and the characteristics of black-start, we choose this simple method to be the criterion of generator self excitation problem in black start. Later, simulation of hydraulic generator self-excitation study is given.

从适用於黑启动快速这一特点出发，在已有的方法中选择了一种简单的近似方法来作为黑启动研究中自励磁产生与否的判据，从自励磁现象本质出发进行了阐述，并对水轮机组自励磁产生的暂态过程进行了仿真计算。

Thirdly, proper probabilistic model is built for the bilateral stop-and-go generator and the probability properties of its output sequence are studied. It is proved that the output sequence obey strong law of large numbers and central limit theorem and that, however, the distributions of 0 and 1 in the output sequence are imbalanced, which implies that this generator cannot be used as keystream generator directly. The rate of coincidence between the output sequence and corresponding LFSR sequences, together with their first derivatives are obtained, which reveal the existence of correlation between these sequences.

最后，建立了双侧停走生成器的概率模型，研究了双侧停走生成器输出序列的概率分布性质和大数性质，证明了生成器输出序列服从强大数定律和中心极限定理，得到了生成器输出序列中0，1分布是不平衡的结论，由此指出不能将这种生成器直接作为密钥流生成器；给出了双侧停走生成器输出序列和相应的线性移位寄存器序列之间的符合率以及一阶差分序列之间的符合率，得到了符合率的表达式，揭示了这些序列的对应比特和对应序列段之间存在相关性。

according to the users′ actually demand for uninterruptible power supply for loads,the internal structure of digital generator is analysed and the reason for its uninterruptible function can′t be achieved.a design of the uninterrupted power supply system which transformed from the digital generator is proposed.the system uses the inverter of generators,ac through inverter for loads,at the same time,charges the battery as ac is normal.inverter the battery dc converters to ac for load,meanwhile,starting generator,when power failure.the system applies uninterruptible power for load,whether the ac is normal or abnormal,and design voltage and frequency stabilization,output zero-interrupted,battery charging and discharging management.without requiring purchase an uninterruptible power supply separately,this design can avoid duplication of investment and wasting of resources.

快速安全提高汽轮发电机转子检修质量。。。摘要：针对用户对负载供电不间断的实际需求，分析了数码发电机的内部结构及其不能实现供电的不间断性能的原因，提出一种由数码发电机改造组成的交流不间断供电系统的设计方法。该设计利用发电机内部的逆变器，在市电正常时，由市电经过逆变器给负载供电，同时给蓄电池充电；在市电断电时，一边启动发电机，一边由蓄电池的直流电通过逆变器转换成交流电供负载使用，实现无论市电正常还是异常，系统对负载提供不间断电源。设计对市电进行稳压、稳频、输出零切换、蓄电池的充放电管理等新功能。此设计无需单独购买不间断电源，避免重复投资和资源浪费。

Compared with the induction generator and the synchronous generator, the doubly-fed generator shows few differences in structure, but the most outstanding characteristic is that it has no special requirement on rotative velocity to the axes.

从结构上看，双馈发电机与常见的感应发电机和同步发电机无太大的差别，但它却有一个引人注目的特点，即对轴上输入转速无任何特殊的要求。

Comparing with existing solutions, new method can utilize generators' speed signal measured by wide area measurement systems directly and detailed model and parameter of power system components were not needed. After sphering measurement-data, ICA with maximal negentropy criterion was carried out to obtain feature matrix. By this means high-dimension data of multi-machine perturbed trajectories were reduced to lower dimensions, and coherent generator groups were identified by pattern recognition consequently. Simulation results of 36-bus system with 8-generator and planning northwest China 750 kV power grid show that noise signals and bad data can be eliminated. This method is accurate in identifying coherent generator groups.

与现有方法相比，这种方法不需要获得系统元件模型和参数，而是直接球化广域测量系统(wide area measurement systems，WAMS)提供的发电机电角速度信号，再利用最大负熵准则进行独立分量分析得到特征矩阵，将高维数的多机受扰轨迹数据变换到低维空间，通过模式识别得到分群结果。8机36节点系统和西北750 kV电网规划系统算例表明，该方法能有效消除噪音和坏数据的影响，准确识别出同调机群。

Installation: Put the machine base on stable desktop, move transducer to adjust to an appropriate location and then lock, place ultrasonic generator and wheel machine next to it, and then connect Ultrasonic generator and transducer by assigned output line, and insert power plug of machine base into power output socket of ultrasonic generator.

安装：把机座放置在平稳的桌面上，将换能器升降移动调整至合适的位置然后锁紧，将超声波发生器及砂轮机放置在旁边，然后用随机所配的输出线将超声波发生器与换能器连接起来，而将机座上的电源插头插入超声波发生器的电源输出插座上。

Chinese traditional virtue is humility and wariness,the compliment and praise to the others should be declination

中国人的传统美德是谦虚谨慎，对别人的恭维和夸奖应是推辞。如

We bought this house on the never-never.

我们以分期付款的方式买下这座房子。