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ABB 5SHY3545L0009 自動化處理器可控硅模塊

該控制器為具有自動轉(zhuǎn)換功能的關(guān)鍵備用或主電源應(yīng)用中使用的單發(fā)電機(jī)組而設(shè)計(jì)?？刂破靼▽ｉT構(gòu)建的算法和邏輯，用于啟動、停止、控制和保護(hù)發(fā)電機(jī)組、打開/關(guān)閉斷路器和具有自動轉(zhuǎn)換功能的電源監(jiān)控

可控硅原理：

可控硅是可控硅整流元件的簡稱,是一種具有三個PN 結(jié)的四層結(jié)構(gòu)的大功率半導(dǎo)體器件,一般由兩晶閘管反向連接而成.它的功用不僅是整流，還可以用作無觸點(diǎn)開關(guān)以快速接通或切斷電路，實(shí)現(xiàn)將直流電變成交流電的逆變，將一種頻率的交流電變成另一種頻率的交流電等等?？煽毓韬推渌雽?dǎo)體器件一樣，具有體積小 穩(wěn)定性好、工作可靠等優(yōu)點(diǎn)。它的出現(xiàn)，使半導(dǎo)體技術(shù)從弱電領(lǐng)域進(jìn)入了強(qiáng)電領(lǐng)域，成為工業(yè)、農(nóng)業(yè)、交通運(yùn)輸、軍事科研以至商業(yè)、民用電器等方面爭相采用的元件。

主要用途：

整流，普通可控硅 基本的用途就是可控整流。二極管整流電路屬于不可控整流電路。如果把二極管換成可控硅，就可以構(gòu)成可控整流電路。我畫一個 簡單的單相半波可控整流電路。在正弦交流電壓U2的正半周期間，如果VS的控制極沒有輸入觸發(fā)脈沖Ug，VS仍然不能導(dǎo)通，只有在U2處于正半周，在控制極外加觸發(fā)脈沖Ug時，可控硅被觸發(fā)導(dǎo)通。畫出它的波形圖，可以看到，只有在觸發(fā)脈沖Ug到來時，負(fù)載RL上才有電壓UL輸出。Ug到來得早，可控硅導(dǎo)通的時間就早；Ug到來得晚，可控硅導(dǎo)通的時間就晚。通過改變控制極上觸發(fā)脈沖Ug到來的時間，就可以調(diào)節(jié)負(fù)載上輸出電壓的平均值UL(陰影部分的面積大小)。在電工技術(shù)中，常把交流電的半個周期定為180°，稱為電角度。這樣，在U2的每個正半周，從零值開始到觸發(fā)脈沖到來瞬間所經(jīng)歷的電角度稱為控制角α；在每個正半周內(nèi)可控硅導(dǎo)通的電角度叫導(dǎo)通角θ。很明顯，α和θ都是用來表示可控硅在承受正向電壓的半個周期的導(dǎo)通或阻斷范圍的。通過改變控制角α或?qū)ń铅?，改變?fù)載上脈沖直流電壓的平均值UL，實(shí)現(xiàn)了可控整流。無觸點(diǎn)開關(guān)，可控硅一個關(guān)鍵用途在于做為無觸點(diǎn)開關(guān)。在自動化設(shè)備中,用無觸點(diǎn)開關(guān)代替通用繼電器已被逐步應(yīng)用。其 特點(diǎn)是無噪音,壽命長。

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全系列高壓產(chǎn)品模塊都有：ABB 5SHY3545L0009 自動化處理器可控硅模塊

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