3BHL000390P0104 ABB可控硅晶閘管模塊是一種電力控制器件，具有節(jié)能、高效、可靠等優(yōu)點，廣泛應(yīng)用于電力控制、變流器、能量調(diào)節(jié)等應(yīng)用領(lǐng)域。
可控硅晶閘管是一種半控型器件，通過控制門極電壓的大小可以控制晶閘管的導(dǎo)通和關(guān)斷時間，從而實現(xiàn)電路的整流和逆變等功能。3BHL000390P0104 ABB可控硅晶閘管模塊采用高品質(zhì)的材料和嚴格的生產(chǎn)工藝，具有高可靠性、高穩(wěn)定性、高精度等優(yōu)點，適用于各種需要精確控制的電力控制應(yīng)用場景。
該模塊的節(jié)能原理是采用變頻調(diào)速系統(tǒng)，以輸出壓力作為控制對象，由變頻器、壓力傳感器、電機組成閉環(huán)恒壓控制系統(tǒng)，工作壓力值可由操作面板直接設(shè)置，現(xiàn)場壓力由傳感器來檢測，轉(zhuǎn)換成4~20mA電流信號后反饋到變頻器，變頻器根據(jù)反饋信號與設(shè)定值進行比較，調(diào)整電機轉(zhuǎn)速及輸出功率，實現(xiàn)節(jié)能控制。
3BHL000390P0104 ABB可控硅晶閘管模塊的工作原理是基于可控硅的導(dǎo)通和關(guān)斷狀態(tài)的控制。它由陽極A、陰極K和控制極G三個電極構(gòu)成。
當(dāng)在它的陽極A與陰極K之間外加正向電壓或者在它的控制極G與陰極K之間輸入一個正向觸發(fā)電壓時，可控硅晶閘管處于導(dǎo)通狀態(tài)。導(dǎo)通后，即使去掉控制極上的電壓，它仍然會維持導(dǎo)通狀態(tài)。
如果陽極或控制極外加的是反向電壓，晶閘管就不能導(dǎo)通。控制極的作用是通過外加正向觸發(fā)脈沖使晶閘管導(dǎo)通，但不能使它關(guān)斷。使導(dǎo)通的晶閘管關(guān)斷，可以斷開陽極電源或使陽極電流小于維持導(dǎo)通的最小值（稱為維持電流）。
如果晶閘管陽極和陰極之間外加的是交流電壓或脈動直流電壓，那么，在電壓過零時，晶閘管會自行關(guān)斷。
3BHL000390P0104 ABB thyristor module is a power control device with advantages such as energy saving, high efficiency, and reliability. It is widely used in power control, converters, energy regulation, and other application fields.
Thyristor is a semi controlled device that can control the on and off time of the thyristor by controlling the gate voltage, thereby achieving functions such as rectification and inversion of the circuit. The 3BHL000390P0104 ABB thyristor module uses high-quality materials and strict production processes, which have the advantages of high reliability, high stability, and high precision. It is suitable for various power control application scenarios that require precise control.
The energy-saving principle of this module is to use a frequency conversion speed regulation system, with output pressure as the control object. A closed-loop constant pressure control system is composed of a frequency converter, pressure sensor, and motor. The working pressure value can be directly set by the operation panel, and the on-site pressure is detected by the sensor. It is converted into a 4-20mA current signal and fed back to the frequency converter. The frequency converter compares the feedback signal with the set value, adjusts the motor speed and output power, Implement energy-saving control.
The working principle of the 3BHL000390P0104 ABB thyristor module is based on the control of the on and off states of the thyristor. It consists of three electrodes: anode A, cathode K, and control electrode G.
When a forward voltage is applied between its anode A and cathode K, or a forward trigger voltage is input between its control electrode G and cathode K, the thyristor is in a conductive state. After conducting, even if the voltage on the control pole is removed, it will still maintain a conducting state.
If a reverse voltage is applied to the anode or control electrode, the thyristor cannot conduct. The function of the control pole is to conduct the thyristor by applying a forward trigger pulse, but it cannot be turned off. To turn off a conducting thyristor, the anode power can be disconnected or the anode current can be kept below the minimum value required to maintain conduction (known as maintenance current).
If there is an AC voltage or pulsating DC voltage applied between the anode and cathode of the thyristor, the thyristor will turn off on its own when the voltage crosses zero.
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