CN203352304U - Novel generator stator winding - Google Patents

Abstract

The utility model discloses a novel generator stator winding, which comprises a plurality of silicon steel sheets, each silicon steel sheet has a plurality of inner groove teeth and a plurality of outer groove teeth, and a plurality of inner groove teeth and a plurality of outer groove teeth Corresponding to the position in the radial direction, the gaps between the plurality of inner teeth form the inner grooves facing the direction of the center of the circle, and the gaps between the plurality of outer teeth form the outer grooves away from the direction of the circle center. Multiple silicon steel sheets with the same structure are stacked together to form the stator of the generator. The utility model improves the utilization rate of the changing magnetic field in the silicon steel sheet. Only the part of the magnetic field in the silicon steel sheet of the traditional generator stator that is close to the winding coil participates in power generation, and there are no winding coils on both sides and outside, so there is no power generation Function: The generator winding method of the utility model makes full use of the changing magnetic field in the silicon steel sheet to generate induced current, and directly improves the power generation current intensity under the premise of constant input power.

Description

A New Generator Stator Winding

technical field

The utility model relates to a stator structure of a generator. the

Background technique

At present, in all kinds of common generators, the stator winding is composed of silicon steel sheets with slots in the inner ring and enameled wires (or copper bars), and the enameled wires are stuck in the slots of the silicon steel sheets according to the specified rules. The common feature is that the slots of the silicon steel sheet are all facing the center of the circle, and the effective power generation parts of the enameled wire are all stuck in the slots of the silicon steel sheet facing the center of the circle. This stator winding method keeps the wires parallel to the magnetic rotor, allowing the wires to "cut the flux lines" to generate electricity. At the same time, silicon steel sheet, a highly magnetic material, plays a vital role in improving the generator's power generation efficiency. If there is no silicon steel sheet as a support for the enameled wire, and a non-magnetic material is used as a support, the generator's The outgoing current will be reduced. the

It is worth mentioning that when the magnetic field lines pass through the silicon steel sheet, they are completely constrained by the silicon steel sheet, that is, the magnetic field passing through the silicon steel sheet does not form a cutting magnetic field line with the stator coil, and the silicon steel sheet has a great influence on the power generation efficiency. The enhancement of the stator coil can only rely on the continuously changing magnetic field inside the silicon steel sheet to induce current in the stator coil. This point is consistent with the principle that the secondary coil of the transformer generates current, and both conform to Maxwell's electromagnetic field theory. the

Based on the analysis of the magnetic field lines of the stator winding of the generator, it can be deduced that when the two adjacent teeth of the silicon steel sheet pass through the N-level and S-level of the rotor respectively, the silicon steel in the C area of the two alveolar roots where the magnetic force lines pass through In the chip, the number of magnetic force lines passing through is equal to the number of magnetic force lines passing through the two teeth A and B areas respectively. That is to say, there is a changing magnetic field inside the silicon steel sheet in the C area, and the changing magnetic field can generate an induced current, which can be used for power generation. Judging from the current winding method of the generator, only one side of the coil is used for the magnetic field in the C area, and the other three sides are not used. the

Utility model content

In order to improve the power generation efficiency of the generator, the utility model provides a generator winding to solve the above problems. the

The technical solution adopted is:

A new type of generator stator winding, including a plurality of silicon steel sheets, each silicon steel sheet has a plurality of inner slot teeth and a plurality of outer slot teeth, and the positions of the plurality of inner slot teeth and the plurality of outer slot teeth correspond to each other in the radial direction. The gaps between the plurality of inner teeth form inner slots facing the direction of the center of the circle, and the gaps between the plurality of outer teeth form outer slots away from the direction of the center of the circle. Multiple silicon steel sheets with the same structure are stacked together to form the stator of the generator.

Compared with the traditional generator winding, the utility model has the following beneficial technical effects:

1. Improve the utilization rate of the changing magnetic field in the silicon steel sheet. Only the part of the magnetic field in the traditional generator stator silicon steel sheet that is close to the winding coil participates in power generation. There are no winding coils on both sides and outside, so it does not play a role in power generation. ; The generator winding method of the utility model makes full use of the changing magnetic field in the silicon steel sheet to generate induced current, and directly improves the power generation current intensity under the premise of constant input power.

2. More coil lengths are involved in the power generation process. In traditional generator windings, there are a large number of wires between the slots that do not participate in power generation. However, the generator winding described in the utility model makes the gap between the slots More than 98% of the wires directly participate in the generation of induced current, thereby improving the power generation utilization rate of the stator coil of the generator. the

3. Under the premise of not increasing the input mechanical energy, the power generation efficiency of the generator is improved. the

Description of drawings

Fig. 1 is a schematic diagram of the generator stator silicon steel sheet proposed by the utility model. the

Detailed ways

A new type of generator stator winding, including a silicon steel sheet 1, a plurality of inner slot teeth 3 and a plurality of outer slot teeth 4 on the silicon steel sheet 1, and a plurality of inner slot teeth 3 and a plurality of outer slot teeth 4 in the radial direction The positions are corresponding, the gaps between the plurality of inner teeth 3 form the inner groove 2 facing the direction of the center of the circle, and the gaps between the plurality of outer teeth 4 form the outer groove 5 away from the direction of the center. Multiple silicon steel sheets 1 of the same structure are stacked together to form the stator of the generator. the

According to the generator stator winding winding method proposed by the utility model, after the enameled wire of the generator stator enters the corresponding card slot, it winds the expected number of turns in the card slot at one time, and then leaves the card slot to enter the corresponding next card slot. According to the specified direction, the expected number of turns is wound in the slot at one time, and the above operations are repeated until the winding in each specified slot is completed. Before the winding of each card slot starts to be wound, it is necessary to pay attention to the insulating cushion between the enameled wire and the silicon steel sheet. the

After the coils in each slot of the generator stator winding proposed by the utility model are independently wound, the relationship between the coils on each phase sequence can be connected in series or in parallel. the

The outer groove teeth 4 of the silicon steel sheet of the generator stator winding proposed by the utility model are higher than the inner groove teeth 3 of the silicon steel sheet, and the space of the outer groove 5 of the silicon steel sheet is larger than the space of the inner groove 2 of the silicon steel sheet, so that when the winding When the coil is fully wound in the inner slot 2 of the silicon steel sheet, there is still a part of space outside the outer slot 5 of the silicon steel sheet for fixing between the stator and the outer casing. the

The implementation of the present utility model has been described above in conjunction with the accompanying drawings, but the present utility model is not limited to the above-mentioned specific embodiment, and the above-mentioned specific embodiment is only illustrative, rather than restrictive, and those of ordinary skill in the art Under the enlightenment of the utility model, many forms can also be made without departing from the purpose of the utility model and the protection scope of the claims, and these all belong to the protection scope of the utility model. the

Claims (1)

1. a Novel generator stator winding, comprise a plurality of silicon steel sheets, it is characterized in that: there is a plurality of inside groove teeth and a plurality of water jacket tooth on each silicon steel sheet, a plurality of inside groove teeth and a plurality of water jacket tooth be the position correspondence diametrically, gap between a plurality of inside groove teeth forms the inner card cage towards center of circle direction, gap between a plurality of water jacket teeth forms the exterior bayonet slot that leaves center of circle direction, and a plurality of silicon steel sheets with same structure overlap and form the stator of generator.