☆型号:810-068158-015 摇臂阀接口板 直流输电系统
【产品详情】
810-068158-014 LAM 摇臂阀接口板
直流输电系统能够长时间持续运行,需要一颗强大而又稳定的心脏,那就是整个直流工程最关键的设备——换流器,我们也称之为换流阀。今天,我们来一起探讨换流器的基本工作原理。
首先,换流器的功能是:实现ac-dc或者dc-ac的变换,前者称为整流,后者称为逆变。这是最基本,也是直流输电系统最核心的功能。
为了实现这个功能,一定的物理结构是必须的,也就是我们所说的结线方式。结线方式是多种多样的,其中三相桥式结线最为常用,由6个桥臂组成,每一个桥臂由数十个至数百个串联的晶闸管元件组成。桥臂具有阀的特性,正常情况下只能从阳极到阴极单方向导通。
控制部件,主要负责对指令译码,并且发出为完成每条指令所要执行的各个操作的控制信号。
其结构有两种:一种是以微存储为核心的微程序控制方式;一种是以逻辑硬布线结构为主的控制方式。
微存储中保持微码,每一个微码对应于一个基本的微操作,又称微指令;各条指令是由不同序列的微码组成,这种微码序列构成微程序。中央处理器在对指令译码以后,即发出一定时序的控制信号,按给定序列的顺序以微周期为节拍执行由这些微码确定的若干个微操作,即可完成某条指令的执行。
简单指令是由(3~5)个微操作组成,复杂指令则要由几十个微操作甚至几百个微操作组成。
☆型号:810-068158-015 摇臂阀接口板 直流输电系统
【英文介绍】
810-068158-014 LAM Interface board of rocker arm valve
Dc power transmission system can run for a long time, need a strong and stable heart, that is the most critical equipment of the entire DC project - converter, we also call the converter valve. Today, we will discuss the basic working principle of the converter.
First of all, the function of the converter is: to achieve ac-dc or dc-ac transformation, the former is called rectification, the latter is called inverter. This is the most basic, but also the most core function of the HVDC system.
In order to achieve this function, a certain physical structure is required, which is what we call the wiring method. There are a variety of wiring methods, of which three-phase bridge wiring is the most commonly used, consisting of six bridge arms, each of which is composed of dozens to hundreds of thyristor elements in series. The bridge arm has the characteristics of a valve, and under normal circumstances can only be one-way from the anode to the cathode.
The control unit is mainly responsible for decoding the instructions and issuing the control signals for the various operations to be performed for each instruction.
There are two kinds of structure: one is microprogram control with micromemory as the core; One is based on the logic hard-wired structure of the control mode.
Microcode is kept in microstorage, and each microcode corresponds to a basic microoperation, also known as microinstruction; Each instruction is composed of a different sequence of microcode, and this microcode sequence constitutes a microprogram. After decoding the instructions, the central processor sends out a certain sequence of control signals, and executes a number of microoperations determined by these microcodes according to the given sequence in microcycles to the beat to complete the execution of a certain instruction.
Simple instructions are composed of (3 to 5) microoperations, and complex instructions are composed of dozens or even hundreds of microoperations.
☆型号:810-068158-015 摇臂阀接口板 直流输电系统
【其他型号推荐】