ABB 5SHY3545L0009 自动化处理器可控硅模块

该控制器为具有自动转换功能的关键备用或主电源应用中使用的单发电机组而设计。控制器包括专门构建的算法和逻辑，用于启动、停止、控制和保护发电机组、打开/关闭断路器和具有自动转换功能的电源监控

可控硅原理：

可控硅是可控硅整流元件的简称,是一种具有三个PN 结的四层结构的大功率半导体器件,一般由两晶闸管反向连接而成.它的功用不仅是整流，还可以用作无触点开关以快速接通或切断电路，实现将直流电变成交流电的逆变，将一种频率的交流电变成另一种频率的交流电等等。可控硅和其它半导体器件一样，具有体积小 稳定性好、工作可靠等优点。它的出现，使半导体技术从弱电领域进入了强电领域，成为工业、农业、交通运输、军事科研以至商业、民用电器等方面争相采用的元件。

主要用途：

整流，普通可控硅 基本的用途就是可控整流。二极管整流电路属于不可控整流电路。如果把二极管换成可控硅，就可以构成可控整流电路。我画一个 简单的单相半波可控整流电路。在正弦交流电压U2的正半周期间，如果VS的控制极没有输入触发脉冲Ug，VS仍然不能导通，只有在U2处于正半周，在控制极外加触发脉冲Ug时，可控硅被触发导通。画出它的波形图，可以看到，只有在触发脉冲Ug到来时，负载RL上才有电压UL输出。Ug到来得早，可控硅导通的时间就早；Ug到来得晚，可控硅导通的时间就晚。通过改变控制极上触发脉冲Ug到来的时间，就可以调节负载上输出电压的平均值UL(阴影部分的面积大小)。在电工技术中，常把交流电的半个周期定为180°，称为电角度。这样，在U2的每个正半周，从零值开始到触发脉冲到来瞬间所经历的电角度称为控制角α；在每个正半周内可控硅导通的电角度叫导通角θ。很明显，α和θ都是用来表示可控硅在承受正向电压的半个周期的导通或阻断范围的。通过改变控制角α或导通角θ，改变负载上脉冲直流电压的平均值UL，实现了可控整流。无触点开关，可控硅一个关键用途在于做为无触点开关。在自动化设备中,用无触点开关代替通用继电器已被逐步应用。其 特点是无噪音,寿命长。

This controller is designed for single generator units used in critical backup or main power applications with automatic conversion function. The controller includes specially constructed algorithms and logic for starting, stopping, controlling, and protecting the generator set, opening/closing circuit breakers, and power monitoring with automatic switching function

Principle of thyristor:

Thyristor, abbreviated as thyristor rectifier element, is a high-power semiconductor device with a four layer structure of three PN junctions, generally composed of two thyristors connected in reverse. Its function is not only rectification, but also as a contactless switch to quickly connect or cut off circuits, achieving the inversion of converting direct current into alternating current, converting alternating current of one frequency into alternating current of another frequency, and so on. Thyristors, like other semiconductor devices, have the advantages of small size, good stability, and reliable operation. Its emergence has led semiconductor technology from the weak current field to the strong current field, becoming a component that is eagerly adopted in industries, agriculture, transportation, military research, as well as commercial and civil electrical appliances.

Main purpose:

Rectification, the basic use of ordinary thyristor is controllable rectification. Diode rectifier circuits belong to uncontrollable rectifier circuits. If the diode is replaced with a thyristor, a controllable rectifier circuit can be formed. I will draw a simple single-phase half wave controllable rectifier circuit. During the positive half cycle of the sinusoidal AC voltage U2, if the control pole of VS does not input the trigger pulse Ug, VS still cannot conduct. Only when U2 is in the positive half cycle and the trigger pulse Ug is applied to the control pole, the thyristor is triggered to conduct. Draw its waveform and it can be seen that only when the trigger pulse Ug arrives, there is a voltage UL output on the load RL. Ug arrives early, and the time for thyristor conduction is early; If Ug arrives late, the thyristor conduction time will be late. By changing the time when the trigger pulse Ug arrives at the control pole, the average output voltage UL (the size of the shaded area) on the load can be adjusted. In electrical technology, the half cycle of alternating current is often set at 180 °, known as the electrical angle. In this way, the electrical angle experienced during each positive half cycle of U2 from zero to the moment the trigger pulse arrives is called the control angle α； The electrical angle at which the thyristor conducts within each positive half cycle is called the conduction angle θ。 Obviously, α and θ Both are used to represent the conduction or blocking range of the thyristor during half a cycle of withstanding forward voltage. By changing the control angle α Or conduction angle θ， By changing the average value UL of the pulse DC voltage on the load, controllable rectification is achieved. A key use of thyristor in contactless switches is as a contactless switch. In automation equipment, the use of contactless switches instead of general relays has gradually been applied. Its characteristic is no noise and long service life.

ABB全系列高压产品模块都有：ABB 5SHY3545L0009 自动化处理器可控硅模块

GFD233A103 3BHE022294R0103

PCD232A 3BHE022293R0101

GFD233A 3BHE022294R0103

FET3251C0P184C0H2

5SHY3545L0009

3BHB013085R0001

3BHE009681

5SHX08F4502

CP405 A0 1SAP500405R0001

PM866-2 3BSE050201R1

DI04

CAI04

PM866-23BSE050201R1

PU515A 3BSE032401R1

ICSE08B5 FPR3346501R1012

R474A11XE

REF615A_E

PM864AK01 3BSE018161R1

PCD232A 3BHE022293R01

REF542PLUS 1VCF752000