Key components of demanding applications
Hitachi Energy’s semiconductors are essential components in a wide range of demanding applications across power transmission and distribution, industry, mobility, and renewable energy. Customers around the world rely on Hitachi Energy’s high-quality power semiconductor products, used in systems with power ratings from 50 kW to 10 GW.
Applications
- Power transmission and distribution: HVDC, FACTS, STATCOM, and related systems
- Industry: medium- and low-voltage drives, soft starters, UPSs, high-power rectifiers, excitation systems, and more
- Renewable energy: converters for pumped hydro, wind turbines, and solar installations
- Mobility: rail and subway main and auxiliary drives, traction converters, and electric vehicles
Thyristors with turn-off capability
GTOs (Gate Turn-Off Thyristors) are advanced types of thyristors that include an additional turn-off function. Unlike conventional thyristors that require external circuitry to stop current flow, GTOs can be switched off by applying a negative gate pulse. This built-in capability allows for precise and rapid control of high power, making GTOs ideal for use in high-voltage, high-current applications.
Hitachi Energy GTOs are widely used in traction systems, power transmission, and industrial drives, environments that demand both robustness and efficiency. These GTO devices provide reliable switching performance, improved safety, and reduced energy losses compared to traditional thyristor designs. Thanks to their ability to handle extreme voltage and current stresses, GTOs remain an essential technology in the field of high-power conversion and control. For applications requiring even faster switching and lower losses, Hitachi Energy also offers IGCTs.
Asymmetric Gate Turn-Off Thyristors
Asymmetric GTOs are divided into two main categories: Buffer Layer and Standard types. Buffer Layer GTOs feature exceptionally low on-state and dynamic losses. Fine-pattern types (5SGF) are optimized for fast switching, while transparent-emitter designs (5SGT) focus on minimizing on-state losses. Standard GTOs provide an excellent trade-off between on-state and switching losses, making them versatile for various industrial and traction applications. Each GTO type is engineered for specific performance needs, ensuring high efficiency and consistent reliability in demanding electrical environments.
Schedule a Technical Online Meeting with Peter
At Astrolkwx, we offer a full range of Hitachi Energy GTOs designed for efficient and reliable switching in high-power electronics. Whether your focus is traction, renewable energy conversion, or industrial drives, our GTO solutions provide outstanding performance and durability. Schedule an online meeting today with one of our power electronics consultants to learn how GTOs can enhance system control, efficiency, and reliability in your next power electronics project.
