磁发电机

In the paper,connection of bridge rectifier in rotor,arrangement of winding in the stator and the rotor,analysis of performance of the generator nonloaded and fully-loaded and design characteristic of the generator series are discussed respectively.Some considerable problems in design and m...

着重介绍了该发电机转子旋转整流电路的接线方式和定、转子绕组结构，分析了发电机在空载和负载2种情况下的运行特性以及该系列发电机的设计特点，指出了采用该励磁方式的单相交流同步发电机在设计和制造过程应注意的问题。

This thesis calculates emphases the excitor circult of AC excitor .but the calculate of excitor circult must solve two problem: how to caculate the output AC phasic potential, phasic electric current and the capacity of AC excitor basing on the main generator direct current excitating voltage and direct current excitation current ;how to caculate the armature feedback, power factor and required ampere-turn of AC exciter.

本文重点对交流励磁机的磁路进行计算，但磁路计算先要解决两个问题：如何根据主发电机给定的直流励磁电压和直流励磁电流计算出交流励磁机的输出交流相电势，相电流及交流励磁机容量；如何计算交流励磁机的电枢反应，功率因数及其所需的安匝数。

In order to improve the reliability of the nuclear Generating Sets and the stabilization of the power system, prevent the long time low frequency oscillation caused by the disturbed of the outside electrical net, assured improving the stabilization margin of the nuclear generating sets in the precondition of enough transient stability, validate the sensitivity of the parameter to the damping of Generating Sets of the MEC5220 digital excitation adjustor produce in Japan that used in the Second Project of Qinshan Nuclear Power Plant, confirm the parameter rationality of the digital excitation adjustor, optimize the parameter of PSS, in this paper, we put up a in-depth study to the principle of MEC5220 digital adjustor produce in Japan by the PSS/E software that develop by the PTI Company in the USA, completed the modeling of the excitation adjustor, PSS, generator, excitor, described the performance of this excitation adjustor, analyzed the essential reason that caused the low frequency oscillation, illuminated the factor that influence the damping characteristic of the MEC5220 digital excitation adjustor. Based on model and emulate, this paper optimized the primary parameter of the excitation adjustor, make a reasonable regulation to the PSS parameter.

为提高核电机组的运行可靠性和接入系统的安全稳定性，防止在外电网的干扰下核电机组发生长时间的低频振荡，保证机组在暂态稳定的前提下提高其稳定裕度，验证秦山核电二期核电机组所配日产MEC5220型数字式励磁调节器参数对机组阻尼的灵敏性，确定数字式励磁调节器的参数的合理性，优化PSS整定参数，本文利用美国PTI公司研发的PSS／E软件对日产MEC5220型数字调节器的原理进行进行了深入细化的研究，完成了励磁调节器、PSS、发电机、励磁机的建模，描述了该型励磁调节器的性能，分析了产生低频振荡的根本原因，阐明了影响阻尼特性的因素。

Then introduce the principle of work and the construction characteristic. This thesis calculates emphases the excitor circult of AC excitor .but the calculate of excitor circult must solve two problem: how to caculate the output AC phasic potential, phasic electric current and the capacity of AC excitor basing on the main generator direct current excitating voltage and direct current excitation current ;how to caculate the armature feedback, power factor and required ampere-turn of AC exciter.

本文重点对交流励磁机的磁路进行计算，但磁路计算先要解决两个问题：如何根据主发电机给定的直流励磁电压和直流励磁电流计算出交流励磁机的输出交流相电势，相电流及交流励磁机容量；如何计算交流励磁机的电枢反应，功率因数及其所需的安匝数。

Microprocessor-based excitor has rapid regulatingspeed, high precision, more reliability and other excellences.What Double-channel microprocessor-based excitation regulators mean that onesynchronous generator has two microprocessor-based regulators, one as the main, theother as the backup.

双通道励磁调节器是指在每个发电机配置两个微机励磁调节器，一个为主机，一个为备机，两个通道之间实现冗余备份，可以极大提高励磁系统的可靠性。

For the purpose of this insurance a Steam Turbine Generator shall comprise the steam turbine and generator complete including exciter and generator cooling plant but not beyond the limits of the inlet steam stop-valve generator terminals or condenser steam inlet point.

为了本保险合同目的，一个蒸汽涡轮发电机包括蒸汽涡轮机、发电机，其中发电机包含励磁机和发电机制冷设备，但该机组以蒸汽进口截止阀、发电机接线柱或蒸汽冷凝器入口点为限。

With operating the excitation control system with PLC, this design maintains the terminal voltage of the generator and the whole system, distributes the wattless loads equitably over the generators, makes sure that the generator works normally and the electricity power system functions savely.

本设计通过用可编程控制器控制发电机的励磁系统，来稳定发电机的机端电压，并稳定地分配机组的无功功率，来满足发电机正常发电及电力系统安全运行的需要。

Field loss protection of generator has to operate after field regulator low excitation limit, to prevent maloperation of field loss protection the setting match between field loss and low excitation limit should conform with this requirement that related protocol states.

发电机的失磁保护必须在励磁调节器的低励限制之后动作，为防止失磁保护误动作，相关规程均明确要求失磁保护和低励限制的整定必须满足此配合条件。

The problem is given for the normal circuit of the double exci ter and the trubogenerator for heat giving.The circuit of the double exciter is discusse d and the new circuit of double exciters is given which can be used on the trubo genator for heat giving.

文摘：提出相位复式励磁装置与供热为主的汽轮发电机常规接线配装存在的问题，从研究改进&相复励&接线方式入手，以满足供热式汽轮发电机励磁的需要，推荐使用改进的新型接线方式。

Faults of power unit of generator excitation system have great influence on stable operation of generator.So,it is necessary to find and eliminate these faults quickly.

1引言发电机励磁系统是同步发电机的重要控制单元，对发电机运行的稳定性及可靠性有直接的影响。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。