Search results for "Induction coil"
showing 3 items of 3 documents
Plakana profila divslāņu indukcijas spoles izveide
2015
Darbā tiek izstrādāta indukcijas spole ar jauna tipa ģeometriju. Galvenais mērķis ir izveidot spoli tā, lai pie tās pēc iespējas tuvāk varētu novietot pastāvīgo magnētu sistēmu un maksimizētu spoles inducēto lauku. Spoles izmēru izvēlei, veikti analītiski novērtējumi. Izveidots spoles ģeometriskajām īpašībām atbilstošs skaitliskais modelis, un modelētie dati salīdzināti ar cita veida ģeometrijas spolēm. Eksperimentālais modelis izveidots laboratorijas apstākļos un tiek pielāgots jau esošam strāvas avotam. Ap spoli izveidota noslēgta cikla ūdens dzesēšanas sistēma. Apskatīta spoles izdalītā un ar dzesēšanas sistēmas palīdzību aizvadītā siltuma bilance. Veikta skaitliska un eksperimentāla mag…
Design of a System to Compose 50 Hz Alternating and Static Magnetic Field From Induction Coil and Permanent Magnets
2020
We demonstrate a technical solution to achieve an intense 50 Hz alternating magnetic field and a static magnetic field made by a permanent magnet at the same place. A compact coil built using the Bitter coil concept is customized to support alternating current, thus creating an alternating magnetic field. A complementary permanent magnet assembly is built around it to achieve the superposition of both fields along the axis of symmetry. Results from the experimental model are compared to both numerical and analytical models.
Floating Zone Growth of Silicon
2015
Abstract The floating zone (FZ) technique changed from a crucible-free purification method into a growth technique mainly for high purity silicon crystals. The melt zone is inductively heated by the high frequency magnetic field of a sophisticated one-turn induction coil being the heart of the FZ growth. The needle-eye technique allows for crystals with large diameters beyond the capillary limitations of a cylindrical zone, but both electric breakthrough at the coil slit and bursting of the crystal by thermomechanical stress presently limit the diameter to 200 mm. A novel gFZ concept is depicted that works with granular silicon feedstock instead of expensive feed rods. The automation of the…