Introduction of the phase-controlled turn-off operation into thyristor changeover switches in the Tokaido Shinkansen

The changeover switches are essential apparatuses in Shinkansen high-speed operation systems to keep powering everywhere. Recently, the thyristor changeover switches (THSs) are introduced instead of the vacuum changeover switches (VSs), hoped to reinforce the stability and reduce the maintenance cost of changeover switches. The THSs have merits in operation, such...