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New Methods of Increasing Transmission Capacity
Published in Anjan K. Deb, Power Line Ampacity System, 2017
The Gate Turn Off Thyristor (GTO) is turned on by a short pulse of gate current, and is turned off by applying a reverse gate signal. It has a short turn-off time in the order of tens of nanoseconds, which is much faster than a thyristor. The main disadvantage of a GTO is the high current requirement to turn off current. It has a low ratio of commutation current to turn off current, generally in the range of 3 to 5. This reduces the power that can be commuted by a GTO in a FACTS application.
Power Semiconductors
Published in Nihal Kularatna, DC Power Supplies Power Management and Surge Protection for Power Electronic Systems, 2018
A gate turn-off thyristor (GTO) is a thyristorlike latching device that can be turned off by application of a negative pulse of current to its gate. This gate turn-off capability is advantageous because it provides increased flexibility in circuit application. It now becomes possible to control power in DC circuits without the use of elaborate commutation circuitry.
Semiconductors and Power Electronics
Published in Ranjan Vepa, Electric Aircraft Dynamics, 2020
The gate turn-off thyristor (GTO), is an obsolete device that behaves like a normal thyristor, but can be turned off using a gate input. Turning off the GTO requires complex circuitry. The GTO needs a very large reverse gate current to turn it off. The gate drive design is complex due to this very large reverse gate current at turn-off.
Design and Performance Analysis of WSCC System Using Modified Grey Wolf Optimization for Optimal Power Quality Enhancement
Published in Electric Power Components and Systems, 2023
T. Dineshkumar, P. Thirumoorthi
Flexible AC transmission system (FACTS) is a technology that is employed in the power grid to optimize the power transfer capacity and increase the reliability and performance of the electricity flow control network. Some of the commonly used shunt FACTS devices are STATCOM or SSC and SVC, while Gate-Turn-Off Thyristor-Controlled Series Condenser (GCSC), Thyristor Controlled Series Condenser (TCSC), and Static Synchronous Series Compensator (SSSC) are series FACTS technologies. These are generally linked in a power transmission line system for regulation of line impedance, which in turn controls the active power flow and line current. However, they are not competent in controlling reactive and active power flow simultaneously as well as independently.
Novel discontinuous PWM for dc-link voltage balancing of multilevel quasi-nested topologies
Published in International Journal of Electronics, 2022
The advancement in gate-controlled, power semiconductors like the insulated gate bipolar transistor (IGBT), the gate turn-off thyristor (GTO) and the gate-commutated thyristor (IGCT) has given great impulse to the development of medium and high voltage topologies within power ratings. In order to reach these power ratings, using traditional converter topologies (mainly NPC and two-level voltage and current source converters), the semiconductor technology has made great improvements to reach higher nominal blocking voltages and currents, currently at 8 kV and 6 kA) (Adler et al., 1984; Baliga, 1988; Moguilnaia et al., 2005), which also increased the final costs.
On the Stabilization and Stability Domain Estimation of VSC-HVDC Transmission Systems
Published in IETE Journal of Research, 2022
M. Ayari, M. M. Belhaouane, N. Benhadj Braiek, X. Guillaud
In 1997, the innovation of the Voltage Source Converter (VSC) used solid-state switches (Gate turn-off thyristor (GTO) and Insulated Gate Bipolar Transistor (IGBT)) and PWM technology. Many scientific researchers paid attention to VSC because of its high controllability of VSC-HVDC. Moreover, VSC leads to many advantages, viz. no telecommunication channel is required between two VSC-HVDC stations, the active and reactive power can be controlled independently, active and reactive power of VSC-HVDC transmission systems have made a positive impact on the system dynamics of power systems [3–7].