IRKT71/16A

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IRKT71/ 16A is a six-terminal, 3 phase, phase angle-controlled thyristor voltage regulator module manufactured by SEMIKRON. It is a three-phase, SCR firing board capable of an output power range of 40A to 90A. The IRKT71/16A is a member of the SEMIKRON family of voltage regulators and is commonly used in unattended or remote-controlled systems. It is also commonly used in HVDC and FACTS systems, as well as voltage control applications in power plants.

The IRKT71/ 16A typically contains three bridges consisting of six thyristors with each bridge having a common anode connection. The thyristor bridges are connected in parallel between the input and output and are triggered in the order to obtain a desired voltage regulation. The thyristor bridges of the IRKT71/ 16A are able to accept commands from the auxiliary control unit, allowing the user to select the type of energy required to keep a regulated voltage. The IRKT71/ 16A can also be manually triggered or triggered with a three-phase alternating current.

The main functions of the IRKT71/ 16A module are to control the input voltage and ensure steady state output voltage. The IRKT71/ 16A is composed of a power bridge formed by three pairs of SCRs, a pulse isolator as well as various gate drive circuits and control circuits. It uses what is referred to as a "gate turn off" technique, meaning that the gate drive circuits have both an on and off state with specific thresholds in between. When the input switching current exceeds the gate drive current, the gate drive will turn off and the SCRs will be returned to their rest state.

The two main components regulating the firing of the thyristors are the delay circuit and the zero-cross circuit. The delay circuit sets the thyristor delay time and is used to adjust the firing of the thyristors. The delay circuit provides a control current for each SCR and can be adjusted to keep the output voltage constant. The zero-cross circuit is used to detect the zero-crossing of the input voltage and provides a signal to the delay circuit which then triggers the firing of the SCRs.

The IRKT71/ 16A module is designed to operate in high voltage, high power applications such as power generation, oil and gas processing, HVDC systems and FACTS systems. It is also used in low voltage applications such as motor control, lighting control and power conditioning. Furthermore, the module can be used in applications such as heating and ventilation, high current applications, energy storage, and energy conversion.

In conclusion, the IRKT71/ 16A is an advanced three-phase thyristor voltage regulation module with high reliability and performance. It is an essential component for providing safe, reliable and efficient power distribution in many industries and applications. The IRKT71/ 16A can be easily placed into operation and is easy to use, making it a great choice for both beginners and experts alike.

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