VS-VSKN71/10

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Thyristors - SCRs - Modules: VS-VSKN71/10 Application Field and Working Principle

Thyristors, more commonly referred to as Silicon Controlled Rectifiers (SCRs), are one of the most important components in modern electrical engineering. Thyristors’ unique properties make them suitable for applications in a variety of fields including power supplies, motor control, communications, and computing, as well as many other areas. This article will focus on the VS-VSKN71/10 thyristor module, discussing its application field and working principle.

The VS-VSKN71/10 is a compact, high power, and high voltage thyristor module developed by STMicroelectronics. The device is suitable for use in electric power systems, and is capable of withstanding up to 10 kilovolts max voltage rating. Additionally, it has an over-temperature protection mechanism and an active damping system that helps to improve its reliability. This makes it especially suitable for use in smart grid, traction, renewable energy, electrical vehicles and other industrial applications.

In terms of operation, the VS-VSKN71/10 module is triggered by the application of a voltage pulse across its gate terminals. This pulse must remain applied for at least two milliseconds for the hysteresis process to complete, after which a feedback signal is sent to the control unit. The feedback signal indicates whether the SCR module has been turned on or off. Once on, the gate voltage no longer needs to be applied and the SCR will remain in its on state until the current is reduced to zero, or the gate voltage is reapplied in the reverse direction.

The VS-VSKN71/10 module also has an adjustable trip time, which is the time required for the thyristor device to turn off after its gate voltage is removed. This time can be increased or reduced by changing the trip time resistor. The device has an adjustable voltage sensitivity, which can be adjusted by changing the trip time current. This adjustable voltage sensitivity ensures that the device can be used in a variety of systems.

Once triggered, the VS-VSKN71/10 module is capable of conducting current at a maximum of 460 amps and dissipating up to 1.7 kilowatts. It can operate in temperatures ranging from -40°C to +105°C, and its surge current (I2t) rating is 15 kiloAmps. The device is also hermetically sealed for protection against dust and moisture.

The VS-VSKN71/10 thyristor module is an ideal choice for industrial and other applications in need of high-reliability, high-power modules. Its adjustable voltage sensitivity and adjustable trip time make it suitable for a variety of systems, and its over-temperature protection and active damping system make it one of the most reliable thyristor modules on the market. Through the application of voltage pulses to its gate terminals, it is capable of reliably controlling electrical power in a variety of industrial scenarios.

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