CN1719700A - Screw permanent magnet field motor - Google Patents
Screw permanent magnet field motor Download PDFInfo
- Publication number
- CN1719700A CN1719700A CNA2005100912450A CN200510091245A CN1719700A CN 1719700 A CN1719700 A CN 1719700A CN A2005100912450 A CNA2005100912450 A CN A2005100912450A CN 200510091245 A CN200510091245 A CN 200510091245A CN 1719700 A CN1719700 A CN 1719700A
- Authority
- CN
- China
- Prior art keywords
- winding
- permanent magnet
- motor
- switch
- control system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
This invention relates to a permanent magnetic switch resistance motor including a base, a bearing, a control system, a rotor, a stator and a winding characterizing that the rotor is composed of a circular magnet, a rotor core and a spindle fixed as one from outside to inside, N-s poles on the axial circular post surface of the magnet are coincident with each other to form a screw state, the stator is composed of a tile pole and a circular base, which includes an internal wall hump fixedly connected with the tile pole, the circular stand is connected with the base, the inside wall of the tile pole is corresponding to the outer wall of the post surface of the magnet, the winding jackets the hump of the inside wall of the circular stand, the control system provides power to the winding intermittently.
Description
Technical field the present invention relates to a kind of magneto switched reluctance motor, specifically a kind of screw permanent magnet field motor.
The background technology motor constantly develops in the application of industrial and agricultural production, traffic and daily life various aspects, and its power consumption is also growing with each passing day.For energy savings, all at the energy-efficient New-type electric machine of development, be exactly a kind of motor of novel efficient both at home and abroad as " switched reluctance machines ", widelyd popularize abroad, replace traditional AC asynchronous motor gradually.
I am a kind of magneto switched reluctance motors as one of applicant's domestic application for a patent for invention 200510083403.8, and it has made full use of the permanent magnetism energy, and is more energy-conservation than " switched reluctance motor ", has higher efficient.But, need compare big transformation if utilize prior art to make this motor.
Summary of the invention the object of the present invention is to provide a kind of identical with patent application 200510083403.8 principles, possess its all characteristics, on making, can adopt the manufacturing process and the material of conventional motors, make full use of energy-conservation, the high efficiency screw permanent magnet field motor that prior art is made.
In order to realize described purpose, the present invention adopts following technical proposals: a kind of screw permanent magnet field motor comprises support, bearing, control system, rotor, stator, winding; It is characterized in that: rotor is made up of the round ring magnet, rotor core and the rotating shaft that install to one from outside to inside, on the axial annular cylinder of round ring magnet N-S the two poles of the earth coincide mutually form spiral-shaped; Stator is made up of a watt shape utmost point, annular seating, and annular seating is provided with the inwall projection, and watt shape utmost point is fixedlyed connected with the inwall projection, and annular seating is fixedlyed connected with support; Watt shape utmost point inwall is corresponding with the annular cylinder outer wall of round ring magnet; Winding is enclosed within on the inwall projection of annular seating; Control system is to the winding intermittent power supply.
The running principle of screw permanent magnet field motor of the present invention is: the rotating torque of motor, come from the interaction force of rotor and stator, 360 ° of spiral-shaped permanent magnet rotor annular cylinder of the present invention, be divided into four watts of shape zones, along counter-clockwise direction N, N-S, S, N-S zone are arranged with longitudinal centre line, they constitute one group of big magnetic field of N-S and two groups of little magnetic fields of N-S respectively.
When stator winding is not switched on, rotor permanent magnetism power and stator effect, the N-S utmost point of rotor always is parked in the corresponding upper and lower position of stator longitudinal centre line, and promptly the N utmost point is parked in the last position of stator, and the S utmost point is parked in the upper/lower positions of stator; (or the N utmost point be parked in the upper/lower positions of stator, the S utmost point is parked in the last position of stator); Thereby constitute N-S " big magnetic loop ".
Behind stator winding electrifying, watt shape utmost point of stator generates an electromagnetic field, and interacts with the rotor permanent magnetic field, makes rotor turn over 90 ° along counter-clockwise direction, and in this rotation process, electromagnetic field constitutes " push-and-pull magnetic circuit " to two groups of little magnetic fields of N-S.
Turn in 90 ° at rotor, the stator winding outage, rotor is rotated further 90 ° under the effect of permanent magnetism power, and the rotor N utmost point is parked in the upper/lower positions of stator, and the S utmost point is parked in the last position of stator; Then stator winding is switched on again 90 ° (sense of current changes), cut off the power supply 90 °, and the like, rotor is running continuously just, and the output torque.
Control system of the present invention, its principal character is to take intermittent power supply to motor stator winding, motor mainly is to promote by electromagnetic force when promptly powering, and during outage, motor is tried hard to recommend moving by permanent magnetism.
Control system of the present invention can adopt open-loop control system, also can adopt closed-loop control system.
The present invention can be made into single-phase motor, two phase motor and threephase motor.
The present invention has the advantage of switched reluctance machines, simultaneously, because rotor is made by permanent magnet, has made full use of the potential of permanent magnetic material, so further improved energy-saving effect than general switched reluctance machines.Main feature of the present invention is:
1, adopt screw permanent magnet field and " big magnetic loop ", " the push-and-pull magnetic circuit " and circulation theory, both utilized electromagnetic force, given full play to the effect of permanent magnetism power again, thereby improved electromechanical conversion efficiency.
2, adopt intermittent power supply to have remarkable energy saving effect.
When 3, adopting open loop control, available frequency converter directly starts, running and stepless speed regulation.
When 4, adopting closed-loop control, if use AC power, the thyristor switch circuit can be realized synchronous speed; If use DC power supply, the power transistor switch circuit then can be realized stepless speed regulation.
When 5, motor moves, have higher efficient equally under small-power and sub-load, obviously be better than traditional monopole asynchronous motor.
The present invention is identical with patent application 200510083403.8 principles, possesses its all characteristics; " axial magnetic field " adopted in patent application 200510083403.8, and the present invention adopts " radial magnetic field ", prior motor version, basically all adopt " radial magnetic field ", so the present invention can adopt the manufacturing process and the material of conventional motors, make full use of prior art and make.
Description of drawings Fig. 1 is a structural representation sketch of the present invention,
Fig. 2 is the A-A cutaway view of Fig. 1,
Fig. 3 is the structure chart of rotor end-face,
Fig. 4 is the expanded view of the round ring magnet of Fig. 3 rotor,
Fig. 5 is the structural representation of two-phase induction motor stator faces,
Fig. 6 is the structural representation of three-phase motor stator end face,
Fig. 7 is the structural representation of monophase machine stator faces,
Fig. 8 is the B-B cutaway view of Fig. 5, Fig. 6, Fig. 7,
Fig. 9 is the interaction schematic diagram of rotor and stator when not switching on,
Figure 10 is the stator winding orientation schematic diagram of monophase machine when not switching on,
Figure 11 is the orientation schematic diagram in four watts of shape districts of rotor when not switching on,
Figure 12 is the interaction schematic diagram of energising back rotor and stator,
Figure 13 is the orientation schematic diagram in its four watts of shape districts of rotor half-twist, energising back,
Figure 14 is the outage back rotor orientation schematic diagram in its four watts of shape districts of half-twist again,
Figure 15 is a stator winding supply current oscillogram,
Figure 16 is monophase machine open-loop control system pulsed frequency converter output current wave figure,
Figure 17 is two-phase induction motor open-loop control system pulsed frequency converter output current wave figure,
Figure 18 is three phase electric machine open-loop control system pulsed frequency converter output current wave figure,
Figure 19 is monophase machine closed control circuit figure,
Figure 20 is two-phase induction motor closed control circuit figure,
Figure 21 is a closed-loop control position switch component drawings,
Figure 22 is the left view of monophase machine closed-loop control position switch slip ring,
Figure 23 is the left view of two-phase induction motor closed-loop control position switch slip ring,
Figure 24 is an assembly structure figure of the present invention.
Among the figure: 1-rotor, 101-round ring magnet, 102-rotor core, 103-rotating shaft, 2-stator, the 201-watt shape utmost point, 202-annular seating, 3-winding, 4-support, 401-support hole, 402-end cap, 5-bearing, 6-control system, 7-position switch assembly, 701-slip ring seat, 702-slip ring, 703-brush, 704-brushgear housing, 705-separating tank, 706-interior ring, 707-outer shroud.
Embodiment
The monophase machine of embodiment 1 open-loop control system
As shown in Figure 1: a kind of screw permanent magnet field motor comprises support 4, bearing 5, control system 6, rotor 1, stator 2, winding 3; Referring to Fig. 2, Fig. 3 and Fig. 4, rotor 1 is made up of the round ring magnet 101, rotor core 102 and the rotating shaft 103 that install to one from outside to inside, on the axial annular cylinder of round ring magnet 101 N-S the two poles of the earth coincide mutually form spiral-shaped, round ring magnet 101 is by permanent magnetic material, as processing and fabricatings such as neodymium iron boron, ferrites; Referring to Fig. 7 and Fig. 8, stator 2 is made up of two pieces watts of shape utmost points 201, annular seating 202, watt shape utmost point 201 is fixedly connected on annular seating 202, watt shape utmost point 201 and annular seating 202 are by permeability magnetic material, make as silicon steel sheet, soft ferrite, support is provided with support hole 401, and the annular seating 202 of stator 2 is fixed in the support hole 401; Annular seating 202 is provided with the inwall projection, and watt shape utmost point 201 is fixedlyed connected with the inwall projection; Watt shape utmost point 201 inwalls are corresponding with the annular cylinder outer wall of round ring magnet 101; Winding 3 is enclosed within on the inwall projection of annular seating 202; Control system 6 is to winding 3 intermittent power supplies.
The present invention, the running principle that is the spiral permanent magnet motor is: the rotating torque of motor, come from the interaction force of rotor 1 and stator 2, shown in Figure 11 and Fig. 4-2: 360 ° of the round ring magnet 101 annular cylinders of rotor 1 of the present invention, be divided into four watts of shape zones, n-quadrant, N-S zone, S zone, N-S zone are arranged from the end face longitudinal centre line along counter-clockwise direction, and referring to Fig. 4, they constitute one group of big magnetic field of N-S and two groups of little magnetic fields of N-S respectively.
Fig. 9 is the interaction schematic diagram of rotor 1 and stator 2 when not switching on, when stator winding is not switched on, 2 effects of rotor 1 permanent magnetism power and stator, referring to Figure 11: rotor 1 its N-S utmost point always is parked in the A-B position of stator 2, be the A position that the N utmost point is parked in stator 2, the S utmost point is parked in the B position of stator 2; (or the N utmost point be parked in the B position of stator, the S utmost point is parked in the A position of stator); Thereby constitute " big magnetic loop ", be somebody's turn to do " big magnetic loop " shown in dotted line direction among Fig. 9.
Behind stator winding electrifying, referring to Figure 12 and Figure 13: watt shape utmost point 201 of stator 2 generates an electromagnetic field, interact with rotor 1 permanent magnetic field, make rotor 1 turn over 90 ° along counter-clockwise direction, in this rotation process, electromagnetic field constitutes " push-and-pull magnetic circuit " to two little magnetic fields of N-S, is somebody's turn to do " push-and-pull magnetic circuit " shown in Figure 12 dotted line.
When rotor 1 turns over 90 °, stator winding 3 outages, rotor 1 is under the effect of permanent magnetism power, be rotated further 90 °, be to have rotated 180 ° relative to initial condition, referring to Figure 14: the rotor 1N-S utmost point stops to the position opposite with the A-B of stator 2, and promptly the N utmost point is parked in the B position of stator, and the S utmost point is parked in the A position of stator; Then stator winding is switched on again 90 ° (sense of current changes), cut off the power supply 90 °, and the like, rotor is running continuously just, and the output torque.
Figure 15 shows the oscillogram into monophase machine stator winding power supply, and this figure illustrates that a principal character of the present invention is an intermittent power supply, and motor mainly is to promote by electromagnetic force when promptly powering, and during outage, motor is tried hard to recommend moving by permanent magnetism.
What the present embodiment monophase machine adopted is open-loop control system, as shown in Figure 1: directly drive startup, running and the speed governing of motor as control system 6 by frequency converter, frequency converter 6 is single-phase frequency converters, this single-phase frequency converter is not common sine wave AC frequency converter, but the single-phase frequency converter of employing square waveform, positive negative pulse stuffing formula, Figure 16 shows the oscillogram of the frequency converter output of monophase machine.
The monophase machine of embodiment 2 closed-loop control systems
Present embodiment only is that control system adopts closed-loop control system, and other is identical with embodiment 1.The supply waveform of single-phase closed-loop control system is much the same with the corresponding waveform of single-phase open-loop control system, its specific implementation process is: position switch assembly 7 is fixed on machine shaft 103 and the end cap 402, this position switch assembly 7, send signal according to the motor corner, the conducting of controlling the electronic switch of forming by semiconductor power device with close, thereby control starting, running and the speed governing of motor.
Semiconductor power device can adopt power transistor, also can adopt thyristor, and the power switch integration module etc., corresponding power supply can adopt direct current or interchange.
The semiconductor power device of present embodiment adopts thyristor and AC power.
Figure 19 illustrates the control circuit that monophase machine adopts thyristor and AC power, and wherein N is unidirectional winding, K switch
1, K
2Be used for being connected K switch with position switch assembly 7
1, K
2And be connected on the alternating current circuit loop with single-phase winding N after connecing; As Figure 21 and shown in Figure 22: position switch assembly 7 is made up of with brushgear housing 704 slip ring seat 701, slip ring 702, brush 703, and slip ring 702 is fixed in slip ring seat 701, referring to Figure 24: the slip ring seat 701 and electric motor end cap 402 Joints of position switch assembly 7; The brushgear housing 704 of position switch assembly 7 is packed in the rotating shaft 103; Brush 703 is installed on brushgear housing 704, and brush 703 usefulness graphite or metal material are made, and brushgear housing 704 is made by insulating material, and the centre bore of brushgear housing 704 is connected with machine shaft 103; Slip ring 702 is made up of with outer shroud 707 interior ring 706, is provided with separating tank 705 between interior ring 706 and the outer shroud 707, and brush 703 end faces closely contact with the end face of outer shroud 707 with the interior ring 706 on separating tank 705 both sides; Four five equilibrium grooves are divided into four secter pats with outer shroud 707, draw four leads from two secter pats and interior ring 706, form K
1With K
2Two switch contacts.The K of Figure 22
1, K
2K among two switch contacts control circuit Figure 19 corresponding with it
1, K
2Be connected.Owing to be provided with separating tank 705 between interior ring 706 and the outer shroud 707, encircle 706 in separating tank 705 makes and be separated, do not contact, so K with outer shroud 707
1, K
2It is not conducting; And brush just slips over from the centre of interior ring 706 with outer shroud 707, corresponding outer shroud secter pat and interior ring 706 is connected, i.e. K
1, K
2Switch conduction; So just by winding N, motor just starts operating current.The rotation of motor drives brush 703 conducting and cut-out K successively
1, K
2Thereby, realized the closed-loop control of motor.
The two-phase induction motor of embodiment 3 open-loop control systems
Referring to Fig. 5 and Fig. 8: the stator 2 of present embodiment is made up of the henry chloranthus herb shape utmost point 201 and annular seating 202; Have four windings 3 (i.e. two pairs of windings); The frequency converter 6 of its open-loop control system is the two-phase frequency converter, is the two-phase AC converter that adopts square waveform, positive negative pulse stuffing formula; Figure 17 shows the oscillogram of two-phase induction motor AC converter output: for the motor of biphase current, two pairs of windings, its current i
1With i
2Phase difference be pi/2; Other is identical with embodiment 1.
The two-phase induction motor of embodiment 4 closed-loop control systems
Referring to Fig. 5 and Fig. 8: the stator 2 of present embodiment is made up of the henry chloranthus herb shape utmost point 201 and annular seating 202; Have two pairs of windings 3; Other mechanical part is identical with embodiment 1; The closed-loop control system of present embodiment is formed its electronic switch by thyristor as semiconductor power device, and adopts AC power.Figure 20 shows two-phase induction motor closed control circuit figure, wherein N
1, N
2Be respectively two phase windings, K switch
1, K
2, K
3, K
4Be used for being connected with position switch assembly 7; K switch
1, K
2And connect the back with winding N
1Be composed in series the first switch winding, K switch
3, K
4And connect the back with winding N
2Be composed in series the second switch winding, the first switch winding and second switch winding are connected in parallel on the alternating current circuit loop; As Figure 21 and shown in Figure 23: the difference of the structure of this position switch assembly 7 and embodiment 2 is: draw eight leads from four secter pats and interior ring 706, form K
1, K
2, K
3, K
4Four switch contacts, other structure of this position switch assembly 7 is identical with embodiment 2.
In like manner, the K of Figure 23
1, K
2, K
3, K
4K among four switch contacts control circuit Figure 20 corresponding with it
1, K
2, K
3, K
4Be connected.Owing to be provided with separating tank 705 between interior ring 706 and the outer shroud 707, encircle 706 in separating tank 705 makes and be separated, do not contact, so K with outer shroud 707
1, K
2, K
3, K
4It is not conducting; And brush just slips over from the centre of interior ring 706 with outer shroud 707, corresponding outer shroud secter pat and interior ring 706 is connected, i.e. K
1, K
2, K
3, K
4Switch conduction; So operating current is just by winding N
1, N
2, motor just starts.The rotation of motor drives brush 703 conducting and cut-out K successively
1, K
2, K
3, K
4Thereby, realized the closed-loop control of motor.
The three phase electric machine of embodiment 5 open-loop control systems
Referring to Fig. 6 and Fig. 8: the stator 2 of present embodiment is made up of the griffith woodsorrel herb shape utmost point 201, annular seating 202; Have three windings 3; The frequency converter 6 of its open-loop control system is a three phase converter, is the three-phase alternating current frequency converter that adopts square waveform, positive negative pulse stuffing formula; Figure 18 shows the oscillogram of three phase electric machine AC converter output: for the motor of three-phase current, three windings, its current i
1, i
2, i
3Phase difference be followed successively by 2 π/3, other is identical with embodiment 1.
Claims (9)
1, a kind of screw permanent magnet field motor comprises support, bearing, control system, rotor, stator, winding; It is characterized in that: described rotor (1) is made up of the round ring magnet (101), rotor core (102) and the rotating shaft (103) that install to one from outside to inside, on the axial annular cylinder of described round ring magnet (101) N-S the two poles of the earth coincide mutually form spiral-shaped; Described stator (2) is made up of a watt shape utmost point (201), annular seating (202), and described annular seating (202) is provided with the inwall projection, and the described watt of shape utmost point (201) fixedlyed connected with the inwall projection, and described annular seating (202) is fixedlyed connected with described support (4); The described watt of shape utmost point (201) inwall is corresponding with the annular cylinder outer wall of described round ring magnet (101); Described winding (3) is enclosed within on the inwall projection of described annular seating (202); Described control system (6) is to described winding (3) intermittent power supply.
2, a kind of screw permanent magnet field motor as claimed in claim 1, it is characterized in that: 360 ° of the annular cylinder of round ring magnet (101) of described rotor (1), be divided into four watts of shape zones, n-quadrant, N-S zone, S zone, N-S zone are arranged from the end face longitudinal centre line along counter-clockwise direction, and they constitute one group of big magnetic field of N-S and two groups of little magnetic fields of N-S respectively.
3, a kind of screw permanent magnet field motor as claimed in claim 1 is characterized in that: described support (4) is provided with support hole (401), and the described annular seating (202) of described stator (2) is fixed in the described support hole (401).
4, a kind of screw permanent magnet field motor as claimed in claim 1 is characterized in that: described screw permanent magnet field motor is divided into monophase machine, two-phase induction motor and three phase electric machine by the number of phases of described stator (1); Described monophase machine has the two described watt shape utmost point (201) and two described windings (3), described two-phase induction motor have the four described watt shape utmost point (201) and four described windings (3), described three phase electric machine have the three described watt shape utmost point (201) and three described windings (3).
5, as any described a kind of screw permanent magnet field motor of claim 1 to 4, it is characterized in that: described control system (6) is an open-loop control system, directly drive startup, running and the speed governing of motor by AC converter as control system (6), described AC converter (6) is to adopt square waveform, positive negative pulse stuffing formula frequency converter; Monophase machine uses the single phase alternating current (A.C.) frequency converter; Two-phase induction motor uses the two-phase AC converter; Three phase electric machine uses the three-phase alternating current frequency converter.
6, a kind of screw permanent magnet field motor as claimed in claim 4, it is characterized in that: described control system (6) is a closed-loop control system, closed-loop control system has position switch assembly (7) to be fixed on described rotating shaft (103) and the end cap (402), described position switch assembly (7) sends signal according to the motor corner, the conducting of controlling the electronic switch of forming by semiconductor power device with close; Described semiconductor power device adopts a kind of in power transistor, thyristor, the power switch integration module, and corresponding power supply is DC power supply or AC power.
7, a kind of screw permanent magnet field motor as claimed in claim 6 is characterized in that: described position switch assembly (7) is made up of with brushgear housing (704) slip ring seat (701), slip ring (702), brush (703); Described slip ring (702) is fixed in described slip ring seat (701), described slip ring seat (701) and described end cap (402) Joint; Described brush (703) is installed on described brushgear housing (704), and described brush (703) is made with graphite or metal material, and described brushgear housing (704) is made by insulating material, and the centre bore of described brushgear housing (704) is connected with described rotating shaft (103); Described slip ring (702) is made up of interior ring (706) and outer shroud (707), be provided with separating tank (705) between ring (706) and the described outer shroud (707) in described, described brush (703) end face closely contacts with the end face of described outer shroud (707) with the described interior ring (706) on described separating tank (705) both sides; Four five equilibrium grooves are divided into four secter pats with described outer shroud (707).
8, as claim 6 or 7 described a kind of screw permanent magnet field motors, it is characterized in that: described screw permanent magnet field motor is a monophase machine; Semiconductor power device is a thyristor; Power supply is an AC power; K switch
1, K
2And be connected on alternating current circuit loop composition control circuit with single-phase winding N after connecing; Draw four leads from two secter pats and described interior ring (706), form K
1, K
2Two switch contacts.
9, as claim 6 or 7 described a kind of screw permanent magnet field motors, it is characterized in that: described screw permanent magnet field motor is a two-phase induction motor; Semiconductor power device is a thyristor; Power supply is an AC power; K switch
1, K
2And connect the back with winding N
1Be composed in series the first switch winding, switch, K
3, K
4And connect the back with winding N
2Be composed in series the second switch winding, the first switch winding and second switch winding are connected in parallel on the alternating current circuit loop; Draw eight leads from four secter pats and described interior ring (706), form K
1, K
2, K
3, K
4Four switch contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100912450A CN1719700A (en) | 2005-08-12 | 2005-08-12 | Screw permanent magnet field motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100912450A CN1719700A (en) | 2005-08-12 | 2005-08-12 | Screw permanent magnet field motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1719700A true CN1719700A (en) | 2006-01-11 |
Family
ID=35931461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100912450A Pending CN1719700A (en) | 2005-08-12 | 2005-08-12 | Screw permanent magnet field motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1719700A (en) |
-
2005
- 2005-08-12 CN CNA2005100912450A patent/CN1719700A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3416146B2 (en) | Electromagnetic piston engine | |
| CN201219227Y (en) | Permanent magnet synchronous machine rotor | |
| CN1097336C (en) | Constant-power brushless DC motor | |
| CN101783573B (en) | Multiphase long-stator primary permanent magnet linear motor | |
| CN101056027B (en) | Non symmetrical interleaving mixed exciting synchronization motor | |
| CN1913284A (en) | Halbach permanent magnet fault-tolerant brushless DC machine | |
| CN1095240C (en) | Flat type vibrating motor | |
| CN105896865A (en) | Permanent magnet direct current energy adding motor | |
| CN201018373Y (en) | Mixed field excitation synchronous motor | |
| CN201188577Y (en) | Single-phase reluctance generator | |
| CN2819600Y (en) | Spiral permanent-magnet electric motor | |
| CN101090226B (en) | Reluctance motor | |
| CN2805203Y (en) | Vortex permanent-magnetic field electric motor | |
| CN201667603U (en) | Primary permanent magnetic linear motor with winding-complementation magnetic circuit symmetrical structure | |
| CN2687941Y (en) | Efficient electricity-saving direct-current permanent-magnet machine | |
| CN1753289A (en) | Bisalient pole magnetic resistance wheel hub electric motor | |
| CN1719700A (en) | Screw permanent magnet field motor | |
| CN205693540U (en) | A kind of DC adds can motor | |
| CN1725602A (en) | Vortex permanent magnetic field motor | |
| CN201204532Y (en) | Three-phase switch reluctance motor using overall spread winding excitation | |
| CN2810009Y (en) | Full-ring DC motor | |
| CN110112852B (en) | Double-fed permanent magnet motor | |
| CN205622452U (en) | Large -tonnage is electronic screw press PMSM of formula of driving directly | |
| CN101056046A (en) | Reversion-resistance electromotive force DC motor | |
| CN104467339A (en) | Linear vibration motor with gravity compensation function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |