Laminated iron core of a generator

Abstract

This article is a laminated core used as a rotor or stator for a generator. This laminated core is formed by stacking multiple thin core plates. As is clear from Reference Figure 1 (reference front view of the core plate) and Reference Figure 2 (reference plan view of the core plate), the core plate is, for example, about 0.5 mm thick, and the laminated core is formed by stacking, for example, about 600 of these core plates. As is clear from Reference Figure 1, the core plate is formed from a circular yoke, teeth extending outward from the outer circumference of the yoke, and bolt holes. The teeth have a first projection and a second projection. The first projection is the head portion of the T-shape and protrudes to the left and right in the circumferential direction. The second projection protrudes to the left and right in the circumferential direction from the middle of the vertical bar of the T-shape. This core plate is formed by combining multiple core plate parts, each having protrusions and grooves at both ends. A joint portion is formed at the protrusion and groove of the adjacent core plate parts. As is clear from Reference Figure 3, bolts are inserted into bolt holes to fix the laminated core plates. The thickness of the core plates is preferably 0.25 mm to 0.5 mm.

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