RU2204734C1 - Windmill-electric generator stator - Google Patents

Abstract

FIELD: wind-power engineering. SUBSTANCE: generator stator has magnetic circuits, windings, field members, and bracing bolts with straps; novelty is that generator is built of two arched wound segments whose external sides are joined together so that ends of arcs are symmetrically facing different sides; transversal magnetic circuits are placed in inner parts of arcs and field members are disposed in-between. EFFECT: reduced mass and size, minimized cost of generator. 1 cl, 4 dwg

Description

 The invention relates to the field of wind energy.

 Known wind generators [1, 2] with stators of the traditional type.

 Of all the known analogues, the closest to the claimed combination of essential features is a wind generator [3] of a segment type, the stator of which is a segment of a traditional type stator.

 The disadvantage of this stator is that it is adapted to work with only one wind wheel. The installation of another parallel wind wheel is associated with the use of a second same stator, which increases the mass and dimensions of the unit.

 The invention is aimed at reducing the mass and dimensions of the generator while minimizing its cost.

 This is achieved by the fact that the stator is made in the form of two segments with windings aligned with the outer sides so that the ends of the arcs are directed symmetrically in different directions, transverse magnetic cores are installed in the inner parts of the arcs, between which exciting elements are placed.

 The achievement of the technical result is due to the fact that as arched segments you can use parts of conventional type stators with standard windings, while it is possible to work with two electric wheels at the same time, which improves economic performance.

 The invention is illustrated in the drawing, in which figure 1 shows the original stator of the traditional type, in particular the stator of a universal commutator motor; figure 2 shows a stator made on the basis of arched segments obtained from the original stator, front view; figure 3 is the same side view; figure 4 shows the stator in combination with rotor elements mounted on the blades of a wind wheel.

 The stator of the wind generator is assembled on the basis of the stator of the universal commutator motor (Fig. 1), which is cut along line AA.

 The stator consists of two halves 1 and 2, which correspond to the upper and lower half of the stator, shown in figure 1. Each of the halves has windings 3 and 4 and internal pole pieces 5. A non-magnetic non-conductive spacer 6 is installed between the stators. As can be seen from FIG. 2, each of the halves of the stator is made in the form of two arcuate segments with windings aligned by the outer (FIG. 1) sides symmetrically in different directions. In the internal parts of the arcs, i.e., the pole pieces 5, transverse magnetic cores 7 are installed, between which exciting elements (permanent magnets) are located 8. The stator is pulled together by coupling bolts 9, which pass through the straps 10. When the generator is in operation, the stator is periodically in magnetic contact with rotary inserts 11, which are fixed at the ends of the blades 12. Magnetic cores have side sections 13.

 For the manufacture of this stator, a typical stator is used, for example, a universal commutator motor cut along line AA (see FIG. 1) with standard windings that are used as workers. In addition to the existing kit, transverse magnetic cores drawn from strips of electrical steel are installed.

 This configuration is pulled together by bolts 9 together with exciting elements - permanent magnets or field windings with cores. The lateral sections 13 have cuts that approximate their shape to a cylindrical one, for better magnetic contact with the rotor inserts 11.

 The operation of the generator is as follows.

 When the blades 12 rotate, the rotor inserts 11 move along a circular trajectory, periodically changing the magnetic conductivity between the side sections 13, i.e., modeling the frequency of the magnetic flux generated in the circuit: source 8 — transverse magnetic core 7 — inner pole 5 — of one of two half (for example, 1) insert 11 - second half 2 - second magnetic core 7 - second pole of source 8. As a result, EMF is induced in the windings 3 with a rotation frequency multiple of the number of blades 12 and the number of wheels.

 The advantage of this generator is its high manufacturability, due to the use of a standard stator with windings, as well as simple and technologically advanced elements - magnetic cores 7 and permanent magnets 8 - the minimum revision can be caused only by making gaps to better ensure magnetic contact of sections 13 and rotor inserts 11.

Sources of information
1. Shefter Ya.I. Using wind power. M .; Energoatomizdat, 1983, p. 109-110, fig. 5.28; 5.29.

 2. USSR copyright certificate 732572 / V.K. Alexandrov, /V.F. Mosolov - Windmill /, B.I. 17, 1980, F 03 D 3/30.

 3. USSR copyright certificate 861716 / I.P. Kopylov, T.V. Lyadova - Gearless Wind Turbine.

Claims (1)

 The stator of the wind generator, containing magnetic cores, windings, exciting elements and coupling bolts with straps, characterized in that the stator is made in the form of two arcuate segments with windings aligned with the outer sides so that the ends of the arcs are directed symmetrically in different directions, transverse in the inner parts of the arcs magnetic circuits between which exciting elements are placed.

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