CN102227092A

CN102227092A - Permanent magnet motor

Info

Publication number: CN102227092A
Application number: CN2011101676126A
Authority: CN
Inventors: 张文祐; 何智平
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-20
Filing date: 2011-06-20
Publication date: 2011-10-26

Abstract

A permanent magnet motor comprises a chasis, a rotor (9) and stators (3) which are equipped with drive coils (4). A pair or multiple pairs of axial polarity permanent magnets (6) are circumferentially arranged on the rotor disc body. N and S polarities of the adjacent two permanent magnets are opposite. Each stators are respectively provided with axial arms (31) which are parallel with a main shaft. Axial two ends of the axial arms are inwardly extended to two sides of the rotor disc body respectively through radial arms which are vertical to the axial two ends of the axial arms. Two inner ends of the radial arms are respectively turned to a direction of the rotor disc body so as to form stator polar arms (33). Rotation space of the rotor disc body is formed between two ends of the stator polar arms. Two ends of the stator polar arms form stator salient poles (35). The two stator salient poles are respectively over against the permanent magnet in the space. A position sensor is arranged in the chasis. The stators designed in the invention can make magnetic lines generated by the drive coils form loop. Structure is compact. Volume is small. Weight is light. Materials can be saved and work efficiency is high. Motor power can be improved.

Description

A kind of permanent-magnetic electric machine

Technical field

The invention belongs to technical field of motors, particularly a kind of permanent-magnetic electric machine.

Background technology

There is big energy-consuming in existing magneto and the switched reluctance machines that adopts permanent magnet to make rotor, and volume weight is big, consumptive material is many, the problem of complex structure, startup difficulty.

Summary of the invention

The technical problem to be solved in the present invention is to overcome above-mentioned deficiency, and a kind of compact conformation, little, in light weight, the high efficiency of volume are provided, and can promote the permanent-magnetic electric machine of complete machine power.

The technical scheme that addresses the above problem is: be provided with casing, be provided with the rotor that is contained on the main shaft in the casing, with the casing relative fixed, the stator of drive coil is housed, described rotor is the circumferential permanent magnet that is embedded with one or more pairs of axial polarity on the insulation disk body of non-magnetic conduction, the N of adjacent two permanent magnets, S polarity is opposite, described stator is made by the stack of permeability magnetic material sheet, it is characterized in that: each stator is respectively equipped with the axial arm parallel with main shaft, the axial two ends of axial arm extend inward into rotor disk body both sides by perpendicular radial arm respectively, turn respectively to rotor disk body direction two radial arm the inners, form the stator polar arm, form the rotation space of rotor disk body between the two stator polar arm ends, two stator polar arm ends form the stator salient poles that is positioned at the rotor both sides, two stator salient poles are respectively over against the permanent magnet that forwards this space to, the position transducer of detection rotor turned position is housed in the casing, and position transducer is connected with electric machine controller.

Further, described epitrochanterian permanent magnet is an even number, and the stator corresponding with permanent magnet on the rotor is to be not less than 3 odd number.

Further, on the described stator power coil is housed.

Further, described drive coil is divided into two parts of series connection, is contained in respectively on the stator polar arm that is positioned at rotor disk body both sides, and described power coil is contained on the stator polar arm of drive coil away from rotor one side.

Operation principle of the present invention is: of the present inventionly decide word and be a sideband opening and " return " font, opening part forms the rotation space of rotor, and during rotor rotation, permanent magnet turns over from the opening rotation space of each stator successively; Electric machine controller is according to the rotor rotation position of position transducer input, drive coil on each stator feeds electric current forward or backwards, make the stator salient poles that is positioned at the rotor both sides produce opposed polarity, the two poles of the earth to permanent magnet and adjacent permanent magnet produce suction or repulsion respectively, magnetic force and epitrochanterian permanent magnet that stator salient poles produces produce tangential force mutually, make rotor rotation.

The present invention becomes " returning " type structure of a side band opening with stator design, and the magnetic line of force that drive coil is produced forms the loop, promotes the power of motor.The present invention have compact conformation, volume little, in light weight, save material, high efficiency, can promote the advantage of power of motor.

The stator of the further scheme of the present invention is set to odd number, makes that motor is easier when starting to overcome the dead point, is easy to start.

The recyclable excess energy of power coil that the further scheme of the present invention is provided with in stator is returned power supply, has energy savings, reduces electrical consumption, makes motor energy-saving advantages more.

Description of drawings

Fig. 1, the embodiment of the invention 1 structural representation

Stator 3 structural representations shown in Fig. 2, Fig. 1 embodiment

The C of Fig. 3, stator shown in Figure 23 is to view

The perspective view of Fig. 4, stator shown in Figure 23

The B of stator 3 position in housing is to structural representation shown in Fig. 5, Fig. 1 embodiment

The A-A of rotor 6 is to structural representation shown in Fig. 6, Fig. 1 embodiment

Fig. 7, the embodiment of the invention 2 stators 3 structural representations

Fig. 8, the embodiment of the invention 3 stators 3 structural representations

1-main shaft 2-end plate 3-stator 4-drive coil 5-coil pressing plate 6-permanent magnet 7-signal panels 8-power coil 9-rotor 10-position transducer 11-rotor cover 12-housing

Embodiment

Embodiment 1 (Fig. 1-Fig. 6)

Referring to Fig. 1, this example is respectively equipped with end plate 2 at cylindrical shell 12 two ends, main shaft 1 two ends are connected with end plate 2 by bearing respectively, the disk body of rotor 9 is installed on the rotor cover 11, and the rotor cover is fixed on the main shaft 1, referring to Fig. 6 by keyway, the disk body of rotor 9 is to form in the grinding tool typing with the reinforcing fiber resin dosing equipment, circumferentially on it evenly be embedded with 3 pairs of permanent magnets 6, the N of permanent magnet 6, S extreme direction are parallel with major axes orientation, and the adjacent permanent magnet polarity on the same card of rotor disk body is opposite.

The ∏ type position transducer 10 that extends in parallel arm with two is housed in the housing, two adjutages extend to the both sides of the signal panels 7 that are contained on the main shaft 1 respectively, the turned position that is used for detection rotor, position transducer is connected with controller, and controller is according to the rotation of the signal control motor of position transducer input.

Referring to Fig. 2-Fig. 4, stator 3 is formed by stacking by the silicon steel sheet of double-sided insulation, silicon steel sheet is " returning " font that a side is provided with opening, with be provided with the open side edges opposed side edges and be superimposed as the axial arm parallel 31 with main shaft, axial arm 31 two ends are parallel with axial arm together by perpendicular radial arm 32 respectively, and the stator polar arm 33 that is provided with opening is connected as a single entity, stator polar arm opening both sides are respectively stator salient poles 35, the radial arm 32 of stator 3 both sides is by end plate 2 relative fixed of screw and both sides, for the rotor disk body provides rotation space, the central axis of stator salient poles 35 aligns with the central axis of permanent magnet 6 in forwarding this space between two stator salient poles 35.

This example is enclosed within two parts that driving winding 4 on the stator is divided into series connection, is fixed on the position of stator polar arm opening both sides (Fig. 1) by pressing plate 5 respectively, and the central axis of drive coil 4 is extremely corresponding with the axial N, the S that forward the permanent magnet between two stator salient poles to.After the drive coil energising, the magnetic line of force between two stator salient poles can pass through stator radial arm 32, axial arm 31 forms loops, thereby can promote the power of complete machine, has that compact conformation, volume are little, in light weight, an advantage of saving material, high efficiency.

The circumferential 3 pairs of permanent magnets 6 (Fig. 6) that evenly are provided with are corresponding with 3 pairs of permanent magnets 6 on these routine rotor 9 disk bodies, and the stator 3 of circumferential even setting is 5 (referring to Fig. 5,6).The stator setting is not less than 3 odd number, helps the startup of motor, has the advantage that a rotor gets final product balance.

Be with power coil 8 on the stator, power coil is installed in that drive coil 4 is away from the one side of rotor on the side stator polar arm 33, and power coil and drive coil are installed respectively, independent operating.Be used to reclaim excess energy and return power supply, have energy savings, reduce electrical consumption, make motor energy-saving advantages more.

Embodiment 2 (Fig. 7)

As different from Example 1, the driving winding 4 of this example is divided into two parts of series connection, is enclosed within respectively on two radial arms 32 of stator 3, makes two stator salient poles 35 of stator 3 produce opposite polarity after the energising.

Also be with power coil 8 on the radial arm 32 of one side.

Embodiment 3 (Fig. 8)

As different from Example 1, the driving winding 4 of this example is a winding that is enclosed within on stator 3 axial arm 31, makes two stator salient poles 35 of stator 3 produce opposite polarity after the energising.

Also be with power coil 8 on the axial arm 31.

Above-mentioned three embodiment have only described the structure of a group rotor and stator, and the present invention can be provided with a plurality of and

embodiment

1,2 or 3 identical rotor, stator pack on same main shaft, separate with non-magnetic insulating barrier between each group.

The above; it only is preferred embodiment of the present invention; be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs to the protection range of technical solution of the present invention to any simple modification, equivalent variations and modification that above embodiment did.

Claims

1. permanent-magnetic electric machine, be provided with casing (12), be provided with the rotor (9) that is contained on the main shaft (1) in the casing, with the casing relative fixed, the stator (3) of drive coil (4) is housed, described rotor is the circumferential permanent magnet (6) that is embedded with one or more pairs of axial polarity on the insulation disk body of non-magnetic conduction, the N of adjacent two permanent magnets, S polarity is opposite, described stator is made by the stack of permeability magnetic material sheet, it is characterized in that: each stator is respectively equipped with the axial arm parallel with main shaft (31), the axial two ends of axial arm extend inward into rotor (9) disk body both sides by perpendicular radial arm (32) respectively, turn respectively to rotor disk body direction two radial arms (32) the inner, form stator polar arm (33), form the rotation space (34) of rotor disk body between the two stator polar arm ends, two stator polar arm ends form the stator salient poles (35) that is positioned at the rotor both sides, two stator salient poles are respectively over against the permanent magnet that forwards this space to (6), the position transducer (10) of detection rotor turned position is housed in the casing, and position transducer is connected with electric machine controller.

2. permanent-magnetic electric machine according to claim 1 is characterized in that: described epitrochanterian permanent magnet (6) is an even number, and the stator corresponding with permanent magnet on the rotor (3) is for being not less than 3 odd number.

3. permanent-magnetic electric machine according to claim 1 is characterized in that: power coil (8) is housed on the described stator (3).

4. according to claim 1,2 or 3 described permanent-magnetic electric machines, it is characterized in that: described drive coil (4) is divided into two parts of series connection, is contained in respectively on the stator polar arm (33) that is positioned at rotor disk body both sides.