CN216929714U - Economical fractional slot motor structure - Google Patents

Abstract

The utility model discloses an economical fractional slot motor structure, belonging to the technical field of motor structures, and the economical fractional slot motor structure comprises a rotor, wherein the outer end of the rotor is provided with a rotor slot, the outer part of the rotor is sleeved with a stator, the inner end of the stator is provided with a stator slot, the outer part of the stator is sleeved with a heat conduction sleeve, and the outer end of the stator is provided with two symmetrical open slots. The magnetic density distribution is similar, and the operation requirement is met.

Description

Economical fractional slot motor structure

Technical Field

The utility model relates to the technical field of motor structures, in particular to an economical fractional slot motor structure.

Background

Fractional slot concentrated winding aims at realizing multiple pairs of poles by using less slots and is applied to an asynchronous generator, the direct-drive type motor absorbs the advantages of two traditional motors, the converter with smaller capacity of the traditional double-fed motor can realize direct drive without a gear box, the cost is greatly saved, the transmission efficiency of the generator is also improved, the fractional slot concentrated winding induction motor has unique advantages in the aspect of offshore wind power generation, but the existing fractional slot motor structure still has certain problems, and certain inconvenience is brought to the use of the fractional slot motor structure.

The tooth space number of the stator and rotor iron core produced by the modern assembly line is difficult to meet the individual requirements of the fractional slot concentrated winding induction motor, the slotting customization process of the iron core is complex and tedious, the price is low, and the difficulty is brought to the research and development of the fractional slot concentrated winding induction motor, so that the technology capable of improving the structure of the fractional slot motor is urgently needed to perfect the equipment.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

Aiming at the problems in the prior art, the utility model aims to provide an economical fractional slot motor structure, and solves the problems that the tooth space number of a stator and rotor iron core produced by a modern production line is difficult to meet the individual requirements of a fractional slot concentrated winding induction motor, the slotting customization process of the iron core is complex and tedious, the price is not high, and the research and development of the fractional slot concentrated winding induction motor are difficult.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

The utility model provides an economic score groove motor structure, includes the rotor, the outer end of rotor is excavated there is the rotor groove, the outside cover of rotor is equipped with the stator, the inner excavation of stator has the stator groove, the outside cover of stator is equipped with heat conduction cover, the outer end excavation of stator has two symmetrical open slots, the one end excavation that the stator is close to the open slot has the spread groove, the one end excavation that the stator is close to the spread groove has the draw-in groove, the one end fixedly connected with fixture block that the heat conduction cover corresponds the draw-in groove, two symmetrical heat conduction posts of the outer end fixedly connected with of heat conduction cover, the outer end fixedly connected with radiator of heat conduction post, the outer end fixedly connected with fin of radiator.

Furthermore, the stator is provided with 15 stator slots, two empty slots are arranged between every two stator slots, 18 rotor slots are arranged on the rotor, and one empty slot is arranged between every two rotor slots.

Further, the stator winding is 0.67mm in national standard wire diameter, the number of turns of a single coil of the stator winding is 35, the rotor winding is 0.63mm in national standard wire diameter, and the number of turns of the single coil of the rotor winding is 32.

Furthermore, the open slot, the connecting slot and the clamping slot are communicated, and the cross sections of the open slot, the connecting slot and the clamping slot are U-shaped.

Furthermore, a frosting layer is arranged at the contact position of the clamping groove and the clamping block, and the clamping groove is matched with the clamping block in size.

3. Advantageous effects

Compared with the prior art, the utility model has the following beneficial effects:

(1) the utility model calculates the number of slots opened by the actual motor and the integral multiple of the number of slots opened by the fractional slot concentrated winding motor, uniformly distributes three phases on the required theoretical number of slots, utilizes an integral slot silicon steel sheet model to meet the design requirement of the fractional slot motor, and when the actual number of slots of a stator and a rotor of the existing motor is more than the required theoretical number of slots of the motor, a winding strides over the corresponding number of slots to be wound, namely, the stator and the rotor of the motor have empty slots, the performance index of the motor under the iron core mechanism reaches the standard, the voltage simulation waveforms of the empty slots and the empty slots are basically identical, the magnetic density distribution is similar, and the operation requirement is met.

(2) According to the utility model, the heat conduction sleeve and the radiator are arranged, the heat conduction sleeve is sleeved at the outer end of the stator, the heat conduction sleeve drives the clamping block to move to the inside of the open slot, the heat conduction sleeve is rotated and pulled, the clamping block can be driven by the heat conduction sleeve to move to the inside of the clamping slot from the connecting slot, the heat conduction sleeve is convenient to limit, meanwhile, heat is transferred to the radiator through the heat conduction sleeve, and the heat is quickly radiated through the radiating fins, so that the use is convenient.

Drawings

Fig. 1 is a schematic structural diagram of an FSC motor (left) with a stator 15 slot and a rotor 18 slot (two slots are empty between every two slots) and a south Anhui motor (right) with a stator 15 slot and a rotor 18 slot (one slot is empty between every two slots) according to the present invention;

FIG. 2 is a schematic structural view of a stator and a heat dissipation mechanism according to the present invention;

FIG. 3 is a schematic side view of the stator of the present invention;

FIG. 4 is an expanded view of the stator winding of the present invention;

fig. 5 is an expanded view of the rotor winding of the present invention.

The reference numbers in the figures illustrate:

1. a rotor; 2. a rotor slot; 3. a stator; 4. a stator slot; 5. a heat conducting sleeve; 6. an open slot; 7. connecting grooves; 8. a card slot; 9. a clamping block; 10. a heat-conducting column; 11. a heat sink; 12. and a heat sink.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1-5, an economical fractional slot motor structure includes a rotor 1, a rotor slot 2 is drilled at an outer end of the rotor 1, a stator 3 is sleeved at an outer portion of the rotor 1, a stator slot 4 is drilled at an inner end of the stator 3, a heat conduction sleeve 5 is sleeved at an outer portion of the stator 3, two symmetrical open slots 6 are drilled at an outer end of the stator 3, a connection slot 7 is drilled at one end of the stator 3 close to the open slot 6, a clamping slot 8 is drilled at one end of the stator 3 close to the connection slot 7, a clamping block 9 is fixedly connected at one end of the heat conduction sleeve 5 corresponding to the clamping slot 8, two symmetrical heat conduction columns 10 are fixedly connected at an outer end of the heat conduction column 5, a heat radiator 11 is fixedly connected at an outer end of the heat radiator 10, and a heat radiation fin 12 is fixedly connected at an outer end of the heat radiator 11.

The number of slots of an actual motor and the integral multiple of the number of slots of a fractional slot concentrated winding motor are calculated, three phases are uniformly distributed on the required theoretical number of slots, an integral slot silicon steel sheet model is utilized to meet the design requirement of the fractional slot motor, when the actual number of slots of a stator and a rotor of the existing motor is more than the required theoretical number of slots of the motor, a winding wire strides over the corresponding number of slots to be wound, namely, the stator and the rotor of the motor have empty slots, the performance index of the motor using the iron core mechanism reaches the standard, the empty slots are basically consistent with the voltage simulation waveforms of the empty slots, the magnetic density distribution is similar, and the operation requirement is met.

Referring to fig. 1, 4 and 5, a stator 3 is provided with 15 stator slots 4, two empty slots are provided between each two stator slots 4, a rotor 1 is provided with 18 rotor slots 2, one empty slot is provided between each two rotor slots 2, a winding of the stator 3 is 0.67mm national standard wire diameter, the number of turns of a single coil of the stator 3 is 35 turns, a winding of the rotor 1 is 0.63mm national standard wire diameter, and the number of turns of the single coil of the rotor 1 is 32 turns.

Referring to fig. 2-3, the open slot 6, the connecting slot 7 and the clamping slot 8 are communicated, the cross-sections of the open slot 6, the connecting slot 7 and the clamping slot 8 are U-shaped, a frosted layer is arranged at the contact position of the clamping slot 8 and the clamping block 9, the clamping slot 8 is matched with the clamping block 9 in size, the heat conduction sleeve 5 is sleeved at the outer end of the stator 3, the heat conduction sleeve 5 drives the clamping block 9 to move to the inside of the open slot 6, the heat conduction sleeve 5 is rotated and pulled, the clamping block 9 can be driven by the heat conduction sleeve 5 to move to the inside of the clamping slot 8 from the connecting slot 7, the heat conduction sleeve 5 is convenient to limit, meanwhile, heat is transferred to the radiator 11 through the heat conduction sleeve 5, and the heat is quickly dissipated through the radiating fins 12, so that the use is convenient.

In the utility model, when related technicians use the device, three phases are uniformly distributed on the required theoretical slot number by calculating the integral multiple of the actual slot number of the motor and the slot number of the fractional slot concentrated winding motor, the design requirement of the fractional slot motor is met by utilizing an integral slot silicon steel sheet model, when the actual slot number of the stator and the rotor of the existing motor is more than the required theoretical slot number of the motor, a winding strides over the corresponding slot number for winding, namely, the stator and the rotor of the motor have empty slots, in addition, the winding method is flexible to operate, can be implemented without the need of skilled winding technology of operators, and has wide application range. The motor performance index under this iron core mechanism of use is up to standard, the dead slot coincide basically with no dead slot voltage simulation waveform, the magnetic density distributes similarly, satisfy the operation demand, and the motor is easy to produce the heat at the during operation, can establish the outer end at stator 3 with heat conduction cover 5 cover, heat conduction cover 5 drives fixture block 9 and removes the inside of open slot 6, rotate and stimulate heat conduction cover 5, can make heat conduction cover 5 drive fixture block 9 and remove the inside of draw-in groove 8 from spread groove 7, be convenient for carry on spacingly to heat conduction cover 5, transmit the heat to radiator 11 through heat conduction cover 5 simultaneously, and dispel the heat fast through fin 12, and facilitate the use.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. An economical fractional slot motor structure comprising a rotor (1), characterized in that: the outer end of the rotor (1) is provided with a rotor groove (2), the outside of the rotor (1) is sleeved with a stator (3), the inner end of the stator (3) is provided with a stator slot (4), the outer part of the stator (3) is sleeved with a heat conduction sleeve (5), the outer end of the stator (3) is provided with two symmetrical open grooves (6), one end of the stator (3) close to the open slot (6) is provided with a connecting slot (7), a clamping groove (8) is drilled at one end of the stator (3) close to the connecting groove (7), one end of the heat conduction sleeve (5) corresponding to the clamping groove (8) is fixedly connected with a clamping block (9), the outer end of the heat conduction sleeve (5) is fixedly connected with two symmetrical heat conduction columns (10), the outer end of the heat conduction column (10) is fixedly connected with a radiator (11), and the outer end of the radiator (11) is fixedly connected with a radiating fin (12).

2. An economical fractional slot machine structure as defined in claim 1, wherein: the stator (3) is opened and chiseled altogether and is had 15 stator slots (4), and is a plurality of stator slot (4) all are equipped with two dead slots between two liang, rotor (1) is opened and chisels altogether has 18 rotor slots (2), and is a plurality of rotor slot (2) all are equipped with a dead slot between two liang.

3. An economical fractional slot machine structure as defined in claim 1, wherein: the winding of the stator (3) is 0.67mm in national standard wire diameter, the number of turns of a single coil of the winding of the stator (3) is 35 turns, the winding of the rotor (1) is 0.63mm in national standard wire diameter, and the number of turns of the single coil of the winding of the rotor (1) is 32 turns.

4. An economical fractional slot machine structure according to claim 1, characterized in that: the open slot (6), the connecting slot (7) and the clamping slot (8) are communicated, and the cross sections of the open slot (6), the connecting slot (7) and the clamping slot (8) are U-shaped.

5. An economical fractional slot machine structure according to claim 1, characterized in that: the mutual contact position of the clamping groove (8) and the clamping block (9) is provided with a frosting layer, and the size of the clamping groove (8) is matched with that of the clamping block (9).

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