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Shinkasai Steel has successfully begun operating a digital Electric Arc Furnace (EAF) in Osaka, following the installation of the Q-One power feeder, according to a press release from Italian equipment provider Danieli.
The system was immediately operational, and after passing all performance tests, Shinkasai Steel issued the Final Acceptance Certificate (FAC) just 28 days after startup.
The Q-One power feeder enables highly efficient EAF melting through variable frequency operation, allowing it to run down to 20 Hz at full power. This results in strong, visible stirring within the liquid steel bath, leading to power reduction and energy savings of approximately 8pct.
One of the most notable features of the Q-One is its minimal impact on the power grid. It operates without requiring any compensation system, making it ideal for areas with weak electrical networks, such as the Osaka Sakai industrial zone. The Pst flicker value is around 0.5, and the harmonics level is only 30pct of the maximum allowed.
Following the successful installation of the first Q-One system at Tokyo Steel in Kyushu in 2021, Danieli has announced that two more Q-One power feeders will soon be installed in Japan, at Chiyoda Steel in Tokyo and JFE B&S in Himeji.
