ADJUSTABLE-SATURATION REACTOR Russian patent published in 1996 - IPC

FIELD: electrical engineering; shunt reactors with steplessly controlled reactive power. SUBSTANCE: adjustable-saturation reactor has laminated core of electric steel laminations, side yokes 3, and end yokes 4,5. Yoke width, maximum diameter of external winding 7, and its radial size are interrelated by expression D_o-2_c≅ a ≅ D_c, where D_o is maximum diameter of external winding; c is radial size of external winding; a is yoke width. Outer surface of end yokes 4,5 is flat. Immediately adjacent to this surface are flat shunts 8 in the form of parallelepiped; center line of each shunt 8 is aligned with axis of rod mounting each of shunts 8. Shunt length equals yoke width. Width of shunt 8, rod diameter, and shunt height are interrelated by expression D-h_sh/2 ≅ b ≅ D+h_sh/2, where D is shunt rod diameter; h_sh is shunt height; b is shunt width. Shunt height is found from formula h_ш=D/2(1-D/a)·k, where k=0.5-2.0 is factor depending on relationship between dimensions of winding core, space factor of winding core, and also on selected flux density in rod and shunts. EFFECT: reduced input of electric steel; reduced stray loss; simplified design of core. 3 dwg