Dławik z litym rdzeniem ferromagnetycznym do rozruchu i hamowania elektrycznego silników indukcyjnych pierścieniowych

Middle and large drives which work in special technological processes or work in application with many start-ups and breakings require using start-up and braking devices. A well-known modern solution for start-up of asynchronous sleep-ring motors is reactors with solid ferromagnetic core, also known as addy current starters. Research on the reactors done for many years by Faculty of Electrical Engineering of Wrocław University of Technology made it possible to use them for sub-synchronous electrical braking of drives with sleep-ring motors. This article describes applications of electrical reactor with solid ferromagnetic core for start-up and electrical braking of sleep-ring asynchronous motor 630 kW exemplified with application of electrical reactor for counter-current braking in the bucket wheel drive in the process of braking with the addy starter.