3BHL000390P0104 ABB可控硅晶闸管模块是一种电力控制器件，具有节能、高效、可靠等优点，广泛应用于电力控制、变流器、能量调节等应用领域。

可控硅晶闸管是一种半控型器件，通过控制门极电压的大小可以控制晶闸管的导通和关断时间，从而实现电路的整流和逆变等功能。3BHL000390P0104 ABB可控硅晶闸管模块采用高品质的材料和严格的生产工艺，具有高可靠性、高稳定性、高精度等优点，适用于各种需要精确控制的电力控制应用场景。

该模块的节能原理是采用变频调速系统，以输出压力作为控制对象，由变频器、压力传感器、电机组成闭环恒压控制系统，工作压力值可由操作面板直接设置，现场压力由传感器来检测，转换成4~20mA电流信号后反馈到变频器，变频器根据反馈信号与设定值进行比较，调整电机转速及输出功率，实现节能控制。

3BHL000390P0104 ABB可控硅晶闸管模块的工作原理是基于可控硅的导通和关断状态的控制。它由阳极A、阴极K和控制极G三个电极构成。

当在它的阳极A与阴极K之间外加正向电压或者在它的控制极G与阴极K之间输入一个正向触发电压时，可控硅晶闸管处于导通状态。导通后，即使去掉控制极上的电压，它仍然会维持导通状态。

如果阳极或控制极外加的是反向电压，晶闸管就不能导通。控制极的作用是通过外加正向触发脉冲使晶闸管导通，但不能使它关断。使导通的晶闸管关断，可以断开阳极电源或使阳极电流小于维持导通的最小值（称为维持电流）。

如果晶闸管阳极和阴极之间外加的是交流电压或脉动直流电压，那么，在电压过零时，晶闸管会自行关断。

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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