基于国产MCU的汽车发电机调节器设计

电压调节器是稳定发电机工作电压的重要部件。为提升汽车发电机系统核心器件的自主可控率,本文提出一种基于国产MCU的汽车发电机电压调节器系统设计方案。系统以国产芯旺微KF8A100FNG微控制器作为主控芯片,根据调节器的应用需求,采用模块化设计,完成了系统的外围电路设计。测试结果在预期范围内。本方案具有很强的工程实用性,是对芯片国产化的一次应用尝试,也为发电机调节器后续的相关开发和改进提供参考。     

汽车发电机电压调节器电路分析

文章通过对常用的汽车电压调节器电路分析,详细地阐述了汽车发电机晶体管电压调节器和触点式电压调节器电路的结构和工作原理,对从事汽车电路教学、汽车维修人员具有重要的参考价值     

一种大功率汽车发电机电压调节器芯片设计

鉴于当今汽车交流发电机功率随汽车上用电设备增多而不断增大的现状,为保证发电机与用电设备在高负载状态下稳定工作,对电压调节器进行集成化设计并增加一系列保护电路,采用带隙基准作为基准电压源,以提高电压调节精确度.基于电压调节器工作原理,详细讨论其结构框图及内部设计,包括启动电路、带隙基准、比较器、过流保护、过热保护等模块....     

基于PWM的汽车交流发电机调节器芯片电路设计

为满足车载用电设备的不断更新对汽车交流发电机调节器性能提出的更高的要求，设计一款汽车交流发电机调节器芯片，通过脉冲宽度调制控制功能来调节电路占空比，解决因调频不稳导致的电压数值上下摆动的问题。为进一步优化汽车调节器性能，在调节器芯片内部电路增设启动电路、基准电压源电路、PWM比较器、短路保护电路、过热保护电路等组合模块。电路芯片采用双极工艺制成，发挥其高速、高跨导、高密度、低功耗等优势。通过电路仿真验证调节器芯片各项参数均满足设计需求。     

平凉电厂#3机励磁系统切换异常分析研究

华能平凉电厂#3发电机励磁系统由A、B两套组成且调节器可以运行在恒电压、恒电流、恒功率因数3个通道,还配有备励通道。在机组投运初期进行过电压与电流通道切换,且两个通道切换时各个监控量数据正常平稳。2014年#3机组大修后在做励磁调节器双套电压通道切换备励时,发生发电机转子电压、转子电流、定子电流、无功功率剧烈摆动。经过调取事故发生时的录波图形,通过详细的理论分析,对励磁调节器的参数进行修正,成功解决了电压通道与备励通道不能切换问题。经实践证明,系统改造后电压通道与备励通道可以可靠切换,目前应用于#2、#3、#4机组。     

3200MVA冲击发电机励磁控制系统运行分析

论述了冲击发电机励磁系统组成及原理,励磁调节器调节电压的原理,以及强励的作用,论述了冲击发电机灭磁的必要性,分析了放电电阻灭磁和灭弧栅灭磁的灭磁原理。     

汽车交流发电机的电压调节器

至今在很多汽车的发电机调节器上仍然使用电——机械继电器。通常,这些调节器的可靠性是一个令人烦恼的问题。另一方面,如果用电子组件置换现有的电——机械调节器,迂到的困难是:如果汽车制造厂家不提供这里选用的组件,就需要寻找一种通用的组件。在本文介绍的电压调节器里,通用的CA3085积分电路既作误差检测器也作放大器。设计图中表示,调节的输出电压为14伏直流。当产生的直流电压小于14伏时,CA3085集成电路增加第八脚的电压几乎到电沅电压。这样使2N6385达林顿功率晶体管导通,并使它进入饱和。于是,在磁场绕组中的电     

DSP控制的谐波励磁同步发电机电压调节器的研制

本文介绍一种基于数字信号处理单片机(TMS320F240)构成的谐波励磁同步发电机电压调节器，它具有硬件电路简单、性能价格比高、可靠性好等特点。     

柴油发电机数字电压调节技术研究

发电机调压器是维持柴油机组正常运行不可缺少的重要部分,对机组的安全稳定运行起到重要作用。目前,主要存在基于晶体管式的模拟调压器以及基于微处理器的数字调压器两种。鉴于数字调压器具有传统的模拟式调压器无法比拟的优势,本文针对某型车辆柴油发电机设计了基于TMS320F28335芯片的数字电压调节器。设计了数字电压调节器的输入输出接口电路,包括模拟量调理电路、数字量调理电路、励磁主电路和励磁驱动电路等,制作功率板。采用以TMS320F28335为核心的DSP最小系统作为核心控制器,利用电压、励磁电流双环调节的方式,采用复合PID控制算法。搭建系统实验平台,对调压器进行测试,满足预期功能要求。     

微机控制的谐波励磁发电机自动电压调节器

介绍了采用高性能16位单片机80C196控制的谐波励磁发电机自动电压调节器,运用先进的PWM、GTR控制技术及合理的控制算法实现其高精度、高可靠性、多功能控制。性能、功能价格比高。     

Design of variable structure voltage regulator using poleassignment technique

In a power system, the role of a generator voltage regulator is to ensure that the output voltage is maintained within an acceptable threshold. In this paper a voltage regulator is proposed. The design of this regulator is based on both variable structure control theory and a pole assignment technique. The performance of the proposed regulator has been compared to that of the realistic regulator system proposed by the IEEE Committee on Excitation Systems. The results are discussed, and the pertaining recommendations are given     

模糊控制技术在无刷交流发电机电压调节中的应用

传统的发电机调压器是由模拟电路构成的,数字电子技术的发展使发电机的调压数字化成为可能。讨论了一种采用的模糊控制技术的数字调压器,并将其应用于无刷交流发电机上。最后,仿真结果说明这种数字调压器具有良好的稳态特性和暂态特性。     

Comparison of resonant current regulators for DFIG during grid voltage distortion

We investigate two different kinds of resonant current regulators for a doubly fed induction generator （DFIG） under distorted grid voltage conditions： proportional integral resonant （PIR） regulator with traditional resonant part and vector propor- tional integral （VPI） regulator with VPI resonant part. Based on the mathematical model of DFIG under distorted grid voltage, the transfer function and frequency response characteristics of the two current regulators are analyzed and compared. The superiority of the VPI current regulator over the PIR regulator is pointed out, and the influence of discretization methods on the performance of the resonant current regulator is studied. All the results are validated by MATLAB simulation and experiments.     

柴油发电机组状态反馈H2/H∞调压器的研究

独立电力系统电压的稳定性主要取决于柴油发电机组的电压响应特性.同步发电机调压系统是一个非线性控制系统,为了分析系统的动态特性,首先建立同步发电机调压系统的非线性数学模型,然后以此为基础设计状态反馈H2/H∞调压器.将H2/H∞控制理论应用于柴油发电机组调压器的设计,把系统性能要求转化为标准H2/H∞控制问题,获得了柴油...     

An improved Backstepping technique using sliding mode control for transient stability enhancement and voltage regulation of SMIB power system

The problem of transient stability and voltage regulation for a single machine infinite bus (SMIB) system is addressed in this paper. An improved Backstepping design method for transient stability enhancement and voltage regulation of power systems is discussed beginning with the classical Backstepping to designing the nonlinear excitation control of synchronous generator. Then a more refined version of this technique will be suggested incorporating the sliding mode control to enhance voltage regulation and transient stability. The proposed method is based on a standard third-order model of a synchronous generator connected to the grid (SMIB system). It is basically implemented on the excitation side of the synchronous generator and compared to the classical Backstepping controller as well as the conventional controllers which are the automatic voltage regulator and the power system stabiliser. Simulation results prove the effectiveness of the proposed method which ameliorates to a great extent the transient stability compared to the other methods.     

Improving power network stability and unit stress with adaptive generator control

The ‘steady state stability’ of the French power transmission system has been greatly improved by supplying additional signals to the voltage regulator. The control system parameters, including the additional signals, have been chosen in order to cover all the possible operating conditions and network configurations. These additional signals lead to an increase in the ‘steady state stability’ domain even with a regulator having constant parameters. Better results have been obtained using the model reference adaptive control method with an adjustable regulator. A method based on the ‘hyperstability’ approach has been used for the design of the adaptive control system because of its efficiency. Moreover, the adaptive control of generator excitation, using voltage, speed and active power as input signals, reduces the oscillations of the H.P. turbine valves when the generator is affected by network perturbations. Therefore, the wear of the units, in particular of nuclear units, could be reduced. The principles of this new type regulator are discussed and experimental results are presented.     

航空发电机性能试验系统的设计与实现

简要介绍了航空发电机的结构,电压调节原理及性能试验系统的组成,详细阐述了其中新型发电机数控调压器电路与控制算法的设计,实现,该系统已成功应用于运７、伊尔７６、波音７３７、某新型战斗机恒装组合发电机等多机型的维修试验中。