A gate turn-off thyristor (GTO) is a special type of thyristor, which is a high-power semiconductor device. It was invented at General Electric. GTOs, as opposed to normal thyristors, are fully controllable switches which can be turned on and off by their third lead, the gate lead.
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The GTO Thyristor can be described as a high power semiconductor which is a controllable switch. It can be turned on and off the third lead, also called as the Gate lead.
A normal thyristor is not a fully controlled switch. The Thyristor acts like a semiconductor diode after it is turned on.
The Turn on signal is accomplished by the positive current flowing between the gate and cathode terminals. Turn off is carried out by negative voltage pulse.
The Gate turn off Thyristor Switches(GTOs) Market is applied in static VAR compensators, motor drives, and AC/DC power supplies. Increased flexibility in the circuit application is the main advantage of the GTO switch.
Scope & Regional Forecast of the Gate turn off Thyristor Switches(GTOs) Market
The Gate controlled switch is available with or without the reverse blocking nature. This feature is an addition to the forward voltage drop due to the need to get a long low doped P1 region.
It can block the reverse voltage called Symmetrical GTO Thyristor. This kind of thyristor is applied in the current source inverter.
The GTO device needs external devices for preparing the Turn on and Turn off currents. This is done to prevent the destruction of the device.
When the device is turned on, it has a high dl/dt rating that limits the rise of the current. It is to ensure that the Thyristor control circuit is turned on.
If the rating is in excess, the area of the device near the gate contacts is overheated and melts.
During turn off, the forward voltage of the Thyristor diode module should be limited, until there is no current. Substantial snubber circuits are added to the device for limiting the voltage rise at turn off.
The applications of the Thyristor Switches(GTOs) Market are noticed in high power inverter, variable speed motor drives, and traction.
Segmentations & Key Players Involved in the Gate turn off Thyristor Switches(GTOs) Market
The Gate turn off Thyristor Switches (GTOs) Market can be broken down into various segments as follows:
- Region- North America, Europe and Asia.
Some of the key players involved in the Gate turn off Thyristor Switches (GTOs) Market are as follows:
- Pulse Power & Measurement Ltd
- A&S Thyristor Co
- IXYS Corporation
- Zhejiang Liujing Rectifier
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