CN202918165U

CN202918165U - Brushless direct-current motor

Info

Publication number: CN202918165U
Application number: CN 201220627274
Authority: CN
Inventors: 安跃军; 安辉; 孙丹; 闵家龙; 薛丽萍
Original assignee: Shenyang University of Technology
Current assignee: Shenyang University of Technology
Priority date: 2012-11-26
Filing date: 2012-11-26
Publication date: 2013-05-01
Anticipated expiration: 2022-11-26

Abstract

Provided is a brushless direct-current motor. The commutation of the brushless direct-current motor is performed one slot by one slot. The brushless direct-current motor includes an end cover, a bearing, a fastener, a casing, an armature iron core, a cooling fan, a protective hood, an armature winding, an electronic commutator, a commutating component support, a position-indicating permanent magnet, a position-indicating permanent magnet support, a rotor permanent magnet main magnetic pole, a rotor iron core and a rotating shaft. The brushless direct-current motor is characterized in that a detecting/commutating device is a detecting/commutating integrated device; the electronic commutator is matched with the position-indicating permanent magnet so as to form the detecting/commutating device, wherein the electronic commutator is composed of a commutating component array A and a commutating component array B which are supported and fixed by the commutating component support, and the position-indicating permanent magnet is fixed on the rotating shaft through the position-indicating permanent magnet support; reed switches in the commutating component array A and the commutating component array B are normally switched off without the effect of the magnetic field of the position-indicating permanent magnet, and are switched on with the effect of the magnetic field of the position-indicating permanent magnet.

Description

A kind of brshless DC motor

Technical field

The utility model relates to a kind of electromechanical energy conversion device, and particularly a kind of brshless DC motor of noncontact commutation belongs to brshless DC motor design and manufacturing technology field.

Background technology

Common DC motor has the easily plurality of advantages such as accents of simple in structure and rotating speed, particularly, because commutation element basically pursues groove and commutates, so torque pulsation is very little, the motor injection volume and good operational stability.

Brshless DC motor is comprised of position detecting device, electronic commutator and motor body three parts usually, because the motor winding commutates take every extremely every phase groove number as unit, so torque pulsation is very large, affect the motor traveling comfort, limited to a great extent the application of brshless DC motor.Therefore, the exploitation, simple in structure, cheap, the reliable brshless DC motor of research and production be numerous potential users expect needed with market.

Summary of the invention

The purpose of this utility model just is to overcome the deficiency of the torque pulsation that prior art exists, and a kind of simple in structure, cheap, stable brshless DC motor is provided.

The technical solution that the utility model provides is.

This brshless DC motor, comprise end cap 1, bearing 2, securing member 3, casing 4, armature core 5, cooling fan 6, anti-wind shelling cover 7, armature winding 8, electronic commutator 9, commutation element support 10, show a permanent magnet 11, show a permanent magnet support 12, rotor permanent magnet main pole 13, rotor core 14 and rotating shaft 15, be characterized in that the detection reversing arrangement of described brshless DC motor is for detecting the commutation integrated device, this detection reversing arrangement by electronic commutator 9 with show that a permanent magnet 11 cooperates and consist of, wherein electronic commutator 9 is made of commutation element array A and commutation element array B, and commutation element array A is by not only making detecting element but also making the first tongue tube A1 of commutation element, the second tongue tube A2, the 3rd tongue tube A3, the 4th tongue tube A4, the 5th tongue tube A5, the 6th tongue tube A6, the 7th tongue tube A7, the 8th tongue tube A8, the 9th tongue tube A9, the tenth tongue tube A10, the 11 tongue tube A11, the 12 tongue tube A12, the 13 tongue tube A13, the 14 tongue tube A14, the 15 tongue tube A15, the 16 tongue tube A16 consists of; Commutation element array B is by not only making detecting element but also making the 17 tongue tube B1 of commutation element, the 18 tongue tube B2, the 19 tongue tube B3, the 20 tongue tube B4, the 21 tongue tube B5, the 22 tongue tube B6, the 23 tongue tube B7, the 24 tongue tube B8, the 25 tongue tube B9, the 26 tongue tube B10, the 27 tongue tube B11, the 28 tongue tube B12, the 29 tongue tube B13, the 30 tongue tube B14, the 31 tongue tube B15, the 32 tongue tube B16 consists of; Commutation element array A and commutation element array B support fixing by commutation element support 10, show that a permanent magnet 11 is by showing that a permanent magnet support 12 is supported and fixed in the rotating shaft 15, the normality of tongue tube among commutation element array A and the B when not showing permanent magnet 11 magnetic fields disconnects, and conducting when showing permanent magnet 11 magnetic fields is arranged.

The commutation method of this brshless DC motor is undertaken by groove, electronic commutator 9 in the brshless DC motor is made of the tongue tube commutation element array A and the commutation element array B that not only make detecting element but also make commutation element, tongue tube in the electronic commutator 9 among commutation element array A and the commutation element array B, by showing that a permanent magnet 11 triggers in turn conducting and closes, with realize to armature winding 8 by the groove commutation.

Compared with prior art, the beneficial effects of the utility model are.

Namely utilize tongue tube magnetic effect principle to consist of a kind of novel electron reversing arrangement, the same with standard machinery commutation brshless DC motor armature winding pursue the groove commutation, can reduce to greatest extent torque pulsation, improve the stability that brshless DC motor moves.

The utility model can as the standard machinery commutating dc motor, carry out speed governing by changing the direct current supply voltage U.By changing the polarity of direct current supply voltage U, just can change easily turning to of motor.

The utility model can be realized the operation of generator state as long as rotor drags rotation by prime mover.

Description of drawings

Fig. 1 is for adopting brushless DC motor structure generalized section of the present utility model.

Fig. 2 is for adopting brshless DC motor body construction cross sectional representation of the present utility model.

Fig. 3 is for adopting lap wound type armature winding of the present utility model to be connected expanded view with electronic commutator.

Fig. 4 is for adopting commutation element array A of the present utility model to cooperate schematic diagram with showing a permanent magnet position.

Fig. 5 is for adopting commutation element array B of the present utility model to cooperate schematic diagram with showing a permanent magnet position.

Number in the figure is described as follows.

1. end cap, 2. bearing, 3. securing member, 4. casing, 5. armature core, 6. cooling fan, 7. prevent wind shelling cover, 8. armature winding, 9. electronic commutator, 10. commutation element support, 11. show a permanent magnet, 12. show a permanent magnet support, 13. the rotor permanent magnet main pole, 14. rotor cores, 15. rotating shafts, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15 and A16 are first～the 16 tongue tube, B1, B2, B3, B4, B5, B6, B7, B8, B9, B10, B11, B12, B13, B14, B15 and B16 are the 17～the 32 tongue tube, 8.1,8.2,8.3,8.4,8.5,8.6,8.7,8.8,8.9,8.10,8.11,8.12,8.13,8.14,8.15,8.16 be first～the 16 armature coil, 11.1,11.2,11.3,11.4 for showing a permanent magnet, 13.1,13.2,13.3,13.4 be rotor permanent magnet main pole N1, S1, N2, the numbering of S2, U is direct current supply voltage.

Embodiment

Below in conjunction with the embodiment shown in the Figure of description the utility model is done and to be illustrated in greater detail.

An embodiment of the present utility model is 4 utmost points, 16 groove inner-rotor brushless direct current machines, as shown in Figure 1, comprise end cap 1, bearing 2, securing member 3, casing 4, armature core 5, cooling fan 6, anti-wind shelling cover 7, armature winding 8, electronic commutator 9, commutation element support 10, show a permanent magnet 11, show a permanent magnet support 12, rotor permanent magnet main pole 13, rotor core 14 and rotating shaft 15.

Among the embodiment, rotor permanent magnet main pole 13 is the mounted structures of four pole-faces, and N1, S1, N2 and S2 that rotor permanent magnet main pole 13 is settled by alternating polarity consist of, respectively with numbering 13.1,13.2,13.3,13.4, as shown in Figure 2.Rotor core 14 is built up by thin silicon steel plates or is made by good materials of magnetic property such as monoblock electrical pure irons, rotor core 14 and show between a permanent magnet support 12 and the rotating shaft 15 and take hot jacket or keyway to be connected, rotor permanent magnet main pole 13 adopts adhering method to be fixed in the rotor core 14, shows that a permanent magnet 11 adopts adhering method to be fixed on and shows on the permanent magnet support 12.

An embodiment of the present utility model is 4 utmost points, 16 groove inner-rotor brushless direct current machines, the motor body structural section as shown in Figure 2, lap wound type armature winding 8 is comprised of 16 armature coils, i.e. the first armature coil 8.1, the second armature coil 8.2, the 3rd armature coil 8.3, the 4th armature coil 8.4, the 5th armature coil 8.5, the 6th armature coil 8.6, the 7th armature coil 8.7, the 8th armature coil 8.8, the 9th armature coil 8.9, the tenth armature coil 8.10, the 11 armature coil 8.11, the 12 armature coil 8.12, the 13 armature coil 8.13, the 14 armature coil 8.14, the 15 armature coil 8.15 and the 16 armature coil 8.16, under minute levels embedding in 16 grooves of the armature core 5 that is laminated by the thin silicon steel plates jet-bedding, for the interlayer that prevents short-circuited armature coil and stator core and armature coil arranges insulating material, and behind rule, carry out complete machine electric insulation dipping lacquer and process; The first armature coil 8.1, the second armature coil 8.2, the 3rd armature coil 8.3, the 4th armature coil 8.4, the 5th armature coil 8.5, the 6th armature coil 8.6, the 7th armature coil 8.7, the 8th armature coil 8.8, the 9th armature coil 8.9, the tenth armature coil 8.10, the 11 armature coil 8.11, the 12 armature coil 8.12, the 13 armature coil 8.13, the 14 armature coil 8.14, the tongue tube array first tongue tube A1 of the 15 armature coil 8.15 and the 16 armature coil 8.16 and electronic commutator 9, the second tongue tube A2, the 3rd tongue tube A3, the 4th tongue tube A4, the 5th tongue tube A5, the 6th tongue tube A6, the 7th tongue tube A7, the 8th tongue tube A8, the 9th tongue tube A9, the tenth tongue tube A10, the 11 tongue tube A11, the 12 tongue tube A12, the 13 tongue tube A13, the 14 tongue tube A14, the 15 tongue tube A15, the 16 tongue tube A16, the 17 tongue tube B1, the 18 tongue tube B2, the 19 tongue tube B3, the 20 tongue tube B4, the 21 tongue tube B5, the 22 tongue tube B6, the 23 tongue tube B7, the 24 tongue tube B8, the 25 tongue tube B9, the 26 tongue tube B10, the 27 tongue tube B11, the 28 tongue tube B12, the 29 tongue tube B13, the 30 tongue tube B14, the 31 tongue tube B15, the annexation of the 32 tongue tube B16 and with rotor permanent magnet main pole 13(13.1,13.2,13.3,13.4) and show a permanent magnet 11(11.1,11.2,11.3,11.4) the position cooperate, as shown in Figure 3.

An embodiment of the present utility model is 4 utmost points, 16 groove inner-rotor brushless direct current machines, electronic commutator 9 is made of commutation element array A and commutation element array B, commutation element array A is by not only making detecting element but also making the first tongue tube A1 of commutation element, the second tongue tube A2, the 3rd tongue tube A3, the 4th tongue tube A4, the 5th tongue tube A5, the 6th tongue tube A6, the 7th tongue tube A7, the 8th tongue tube A8, the 9th tongue tube A9, the tenth tongue tube A10, the 11 tongue tube A11, the 12 tongue tube A12, the 13 tongue tube A13, the 14 tongue tube A14, the 15 tongue tube A15, the 16 tongue tube A16 consists of, commutation element array B is by not only making detecting element but also making the 17 tongue tube B1 of commutation element, the 18 tongue tube B2, the 19 tongue tube B3, the 20 tongue tube B4, the 21 tongue tube B5, the 22 tongue tube B6, the 23 tongue tube B7, the 24 tongue tube B8, the 25 tongue tube B9, the 26 tongue tube B10, the 27 tongue tube B11, the 28 tongue tube B12, the 29 tongue tube B13, the 30 tongue tube B14, the 31 tongue tube B15, the 32 tongue tube B16 consists of, the commutation element array A of electronic commutator 9 with show a permanent magnet 11(11.1,11.3) position matching as shown in Figure 4, the commutation element array B of electronic commutator 9 with show a permanent magnet 11(11.2,11.4) position matching as shown in Figure 5.

At state shown in Figure 2, the first armature coil 8.1, the 5th armature coil 8.5, the 9th armature coil 8.9 and the 13 armature coil 8.13 belong to commutating coil, and at this moment, the annexation of armature winding 8 and electronic commutator 9 as shown in Figure 2; In conjunction with Fig. 4 as seen, shown the effect in a permanent magnet 11.1 magnetic fields, the first tongue tube A1 among the commutation element array A and the second tongue tube A2 are closed, the negative pole of DC power supply will be connected to behind the second armature coil 8.2 short circuits, shown the effect in a permanent magnet 11.2 magnetic fields, the 21 tongue tube B5 among the commutation element array B and the 22 tongue tube B6 are closed, will be connected to dc power anode behind the 5th armature coil 8.5 short circuits, and direct voltage U puts on a branch road of armature winding 8; Equally, as seen from Figure 5, shown the effect in a permanent magnet 11.3 magnetic fields, the 9th tongue tube A9 among the commutation element array A and the tenth tongue tube A10 are closed, the negative pole of DC power supply will be connected to behind the 9th armature coil 8.9 short circuits, shown the effect in a permanent magnet 11.4 magnetic fields, the 29 tongue tube B13 among the commutation element array B and the 30 tongue tube B14 are closed, to be connected to the positive pole of DC power supply behind the 13 armature coil 8.13 short circuits, direct voltage U puts on another branch road of armature winding 8.Direct voltage divides two-way to put on armature winding, produces armature supply in armature winding, and armature supply and the effect of rotor main field produce electromagnetic torque, and electromagnetic torque drags load running, realizes energy converting between mechanical.During motor rotation, the relative position of the armature coil of armature winding 8 and rotor permanent magnet main pole 13 changes at any time, owing to showing that a permanent magnet 11 is with 13 rotations of rotor permanent magnet main pole, guaranteed to show that a permanent magnet 11 magnetic fields trigger the armature coil that closed tongue tube can short circuit need to commutate, and then realized the continuous machine electric energy conversion.

The tongue tube of commutation element array A and commutation element array B is not only as position detecting element but also as commutation power component (being that detecting element and switch element unite two into one) in the electronic commutator 9, realize detecting commutation integrated, so that electronic commutator of the present utility model and brushless DC motor structure are greatly simplified.

Show a permanent magnet 11 version, lay triggering and on state characteristic that form, material feature and spacing are determining commutation element array A and commutation element array B tongue tube in the electronic commutator 9, can utilize the design of electromagnetic field analysis computational methods to show the version of tongue tube in a permanent magnet 11 and the electronic commutator 9, lay form and dimensional parameters in conjunction with selected tongue tube characteristic, and suitably adjust aborning.

The utility model can have brushless motor as the standard machinery commutation, carries out speed governing by changing the direct current supply voltage U, by changing the reversing motor direction of rotation of direct current supply voltage U; If rotor drags rotation by prime mover, electronic commutator need not any adjustment can according to the operation of generator state, realize the reversible operation of motor easily.

Consider according to existing tongue tube technical target of the product, DRR-129 type dry-reed tube switch voltage such as HAMLIN is 400V, load current can reach 6A, single tongue tube feed ability surpasses 2kW, power of motor can reach more than several kilowatts, take cooperative mode work in parallel, then can commutate to larger electric current, power of motor accomplish tens so that up to a hundred kilowatts all be feasible.

Claims

1. brshless DC motor, comprise end cap (1), bearing (2), securing member (3), casing (4), armature core (5), cooling fan (6), anti-wind shelling cover (7), armature winding (8), electronic commutator (9), commutation element support (10), show a permanent magnet (11), show a permanent magnet support (12), rotor permanent magnet main pole (13), rotor core (14) and rotating shaft (15), it is characterized in that the detection reversing arrangement of described brshless DC motor is for detecting the commutation integrated device, this detection reversing arrangement cooperates formation by electronic commutator (9) with showing a permanent magnet (11), wherein electronic commutator (9) is made of commutation element array A and commutation element array B, and commutation element array A is by not only making detecting element but also making first tongue tube (A1) of commutation element, the second tongue tube (A2), the 3rd tongue tube (A3), the 4th tongue tube (A4), the 5th tongue tube (A5), the 6th tongue tube (A6), the 7th tongue tube (A7), the 8th tongue tube (A8), the 9th tongue tube (A9), the tenth tongue tube (A10), the 11 tongue tube (A11), the 12 tongue tube (A12), the 13 tongue tube (A13), the 14 tongue tube (A14), the 15 tongue tube (A15), the 16 tongue tube (A16) consists of; Commutation element array B is by not only making detecting element but also making the 17 tongue tube (B1) of commutation element, the 18 tongue tube (B2), the 19 tongue tube (B3), the 20 tongue tube (B4), the 21 tongue tube (B5), the 22 tongue tube (B6), the 23 tongue tube (B7), the 24 tongue tube (B8), the 25 tongue tube (B9), the 26 tongue tube (B10), the 27 tongue tube (B11), the 28 tongue tube (B12), the 29 tongue tube (B13), the 30 tongue tube (B14), the 31 tongue tube (B15), the 32 tongue tube (B16) consists of; Commutation element array A and commutation element array B are supported fixing by commutation element support (10), show that a permanent magnet (11) is by showing that a permanent magnet support (12) is supported and fixed in the rotating shaft (15), the normality of tongue tube among commutation element array A and the commutation element array B when not showing a permanent magnet (11) magnetic fields disconnects, and conducting when showing a permanent magnet (11) magnetic fields is arranged.