CN109412386A - A kind of phase-wound rotor permanent magnet speed regulation device - Google Patents
A kind of phase-wound rotor permanent magnet speed regulation device Download PDFInfo
- Publication number
- CN109412386A CN109412386A CN201811544338.8A CN201811544338A CN109412386A CN 109412386 A CN109412386 A CN 109412386A CN 201811544338 A CN201811544338 A CN 201811544338A CN 109412386 A CN109412386 A CN 109412386A
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- Prior art keywords
- internal rotor
- rotor
- speed regulation
- winding
- stator
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/02—Machines with one stator and two or more rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K51/00—Dynamo-electric gears, i.e. dynamo-electric means for transmitting mechanical power from a driving shaft to a driven shaft and comprising structurally interrelated motor and generator parts
Abstract
The invention discloses a kind of permanent magnet speed regulation devices of phase-wound rotor, including outer rotor assembly, internal rotor assembly, speed regulation device assembly, external resistance box assembly and base assembly；In the internal rotor assembly, internal rotor coil windings and internal rotor iron core constitute phase-wound rotor structure；The outer circle of internal rotor iron core is uniform-distribution with rotor line ring recess, the internal rotor coil windings are embedded in rotor line ring recess, and internal rotor coil windings are connected into three-phase or multiphase symmetric winding with insulated conductor, the outlet beginning and line end of the every phase winding connected into are shorted；In the speed regulation device assembly, the inner circle of stator core is uniform-distribution with stator slot winding, and the depth of rebate H of stator slot winding is greater than the maximum outside diameter of power input shaft.Since the present invention significantly shortens the axial length of internal rotor assembly and speed regulation device assembly, and then the axial length of entire permanent magnet speed regulation device is shortened, and then reduces permanent magnet speed regulation device manufacture and installation cost.
Description
Technical field
The present invention relates to a kind of permanent magnet speed regulation device, especially a kind of phase-wound rotor permanent magnet speed regulation device.
Background technique
Chinese patent CN2018102515689 proposes a kind of permanent magnetic speed-adjusting based on rotor loop induced potential adjusting type
Device, by the induced electromotive force in control stator coil, to realize in internal rotor coil winding induced electromotive force and induct
The adjusting of electric current, and then realize the adjusting of power output shaft speed in internal rotor assembly, but the device has following two:
1, the internal rotor coil windings of the device are cage-type rotor, and cage-type rotor is structurally characterized in that the number of phases more (every
Conducting bar is a phase) and the number of turns is few (every phase is half turn), and the sectional area of cage item is larger, therefore leads to induced current in cage item very
It is big and induced potential is very low；Known by transformer principle, when the voltage of first winding (i.e. internal rotor coil windings) is very low, to obtain
Induced potential or potential needed for secondary winding (i.e. stator coil), it is necessary to lengthen first winding and secondary winding coil and
The axial length of core length, the internal rotor coil windings and stator coil that result in the device in this way is longer, and causes in turn
Internal rotor assembly and the axial length of entire speed-regulating system are longer；
2, the stator coil of the device is conventional structure, i.e., (conventional structure is general for the depth of rebate very little of stator core (9)
For 2~3mm), the maximum outside diameter for making the end size of stator coil be less than power input shaft in radial directions (is said see the patent
Bright book attached drawing 1), therefore to avoid the end of stator coil and the maximum outside diameter of power input shaft from interfering, it is necessary to assure it is fixed
The end of subcoil and the maximum outside diameter of power input shaft maintain a certain distance in the axial direction；Due to the end of stator coil
Portion is useless length, therefore the addition of this portions end length also increases the axial length of the speed-regulating system of the device.
Since existing permanent magnet speed regulation device is mounted between motor and load, when axial length is excessive, it will produce
Raw following problem:
1, motor or the critical speed and rigidity of load reduce, and motor or load is made easily to generate vibration and noise；
2, when carrying out speed regulation transformation to the motor of some old, old engineerings, due to not considering permanent magnetic speed-adjusting when initial design
Device installation, therefore ambient enviroment is relatively fixed, motor or load are all difficult to move, and lead to the axial peace of permanent magnet speed regulation device
Fill insufficient space；
3, the manufacture of permanent magnet speed regulation device and installation cost increase.
Summary of the invention
To solve the above problems existing in the prior art, the present invention will propose a kind of phase-wound rotor permanent magnet speed regulation device,
In addition to having the advantages that the permanent magnet speed regulation device based on rotor loop induced potential adjusting type, following purpose is also realized:
1, vibration and the noise of motor or load are reduced；
2, the axially mounted space of permanent magnet speed regulation device is reduced, in favor of the transformation of old equipment；
3, manufacture and installation cost are reduced.
To achieve the above object, technical scheme is as follows:
A kind of permanent magnet speed regulation device of phase-wound rotor, including outer rotor assembly, internal rotor assembly, speed regulation device assembly,
External resistance box assembly and base assembly；The outer rotor assembly includes permanent magnet, flush type bearing and power input shaft；Institute
The internal rotor assembly stated includes internal rotor coil windings, internal rotor iron core and power output shaft；The speed regulation device assembly packet
Include stator core, stator coil winding, shell, outlet box and stator winding outlet；The external resistance box assembly includes
Grade speed adjusting resistance case and external resistance box lead；The base assembly includes bottom plate, left end bearing block, left end bearing, right end
Bearing block and right end bearing.
The power input shaft is stepped shaft structure, and passes through left end bearing block and connect with engine, power input shaft
The maximum inscribed circle surface installation permanent magnet, flush type bearing is installed at the type hole of center.
In the internal rotor assembly, internal rotor coil windings and internal rotor iron core constitute phase-wound rotor structure；Interior turn
Sub- iron core is formed by the silicon steel plate stacking of double-sided insulation, and the outer circle of internal rotor iron core is uniform-distribution with rotor line ring recess, described
Internal rotor coil windings are embedded in rotor line ring recess, and internal rotor coil windings are connected into three-phase or multiphase with insulated conductor
Symmetric winding, the outlet beginning and line end of the every phase winding connected into are shorted；The internal rotor iron core passes through bonded
Knot or interference fit type are fixedly connected on outer round surface corresponding to power output shaft；The power output shaft is multi-diameter shaft
Structure, one end are connected by flush type bearing with power input shaft, and the other end is connected by right end bearing with right end bearing block, are moved
The middle part of power output shaft is fixedly connected by key or interference fit type with internal rotor coil windings.
In the speed regulation device assembly, the outer surface of shell is fixedly connected with base assembly insole board, inner surface and fixed
Sub- iron core is fixedly connected；The inner circle of stator core is uniform-distribution with stator slot winding, and the stator coil winding is embedded in fixed
In sub-line ring recess, the depth of rebate H of stator slot winding is greater than the maximum outside diameter of power input shaft；Stator core is compressed on shell
Inner surface；The stator winding outlet of stator coil is drawn by outlet box；The external resistance box includes a grade speed adjusting resistance
Case, stepless speed regulation resistance box and fixed resistance box, and be connected by resistance box lead with stator winding outlet.
In the base assembly, type hole is provided on the left end bearing block；The left end bearing top circle is mounted on
The type hole inner surface of left end bearing block, inner hole are mounted on the outer round surface of the corresponding diameter of axle of power input shaft；The right end
Bearing block is provided with type hole；The right end bearing top circle is mounted on the type hole inner surface of right end bearing block, and inner hole is mounted on dynamic
The correspondence diameter of axle outer round surface of power output shaft；The central axis coaxial of power input shaft and power output shaft；The bottom plate is
Slab construction is equipped with left end bearing block and right end bearing block thereon.
The step speed regulation resistance box is made of contactor K1~KN and multilevel resistance R1~RN；The fixed electricity
Resistance case is made of three fixed energy consumption resistor R of resistance value in parallel.The stepless speed regulation resistance box is by a frequency converter and one
Group energy consumption resistor composition.
Further, the structure of the internal rotor coil windings is hard winding, mush winding or scattered winding.
Further, K1~KN probe of contactor, every phase rotor windings series connection are set in the step speed regulation resistance box
Resistance R1~RN；Each phase resistance R1~RN is parallel connection, and probe of contactor K1~KN is arranged between each phase resistance R1~RN.
Further, the power input shaft is permeability magnetic material axis；The baseboard material is Fine Steel Casting iron plate；Institute
The power output shaft stated is Fine Steel Casting iron axis.
Further, the rotor line ring recess is axial groove, and the outer circle circumferencial direction along internal rotor iron core is uniformly distributed, rotor
The center line of coil slot cross section is conllinear with a radial line of internal rotor iron core；The stator slot winding is axial groove, edge
The inner circle circumferencial direction of stator core is uniformly distributed, and the center line of stator slot winding cross section and a radial line of stator core are total
Line.
The present invention has following significant compared with Chinese patent CN2018102515689 (hereinafter referred to as existing apparatus)
Advantage:
1, the present invention uses Wound-rotor type inner rotor core, if setting the number of turns of internal rotor coil windings of the invention as N, line
Circle umber of turn is then N times of internal rotor coil windings the number of turns of existing apparatus, therefore when air gap flux density, pole span and slip are identical
When, the generated induced potential of internal rotor coil windings of the present invention is N times of existing apparatus, and induced current is existing apparatus
1/N times, by transformer or the electric potential balancing volume of asynchronous machine, internal rotor coil windings needed for speed regulation device of the present invention and
The length of stator coil winding is then the 1/N of existing apparatus, i.e., under the same operating conditions, internal rotor coil windings of the present invention
And the axial length of stator coil is much smaller compared with the same parts of existing apparatus.
2, since the depth of rebate H that the inner circle of stator core of the invention is distributed is greater than the maximum outside diameter of power input shaft,
I.e. the end of stator coil will not be interfered with the maximum outside diameter of power input shaft, thus in speed regulation device stator winding axis
Same section to length than existing apparatus reduces an end axial length.
3, due to the shortening of overall axial length of the present invention, the critical speed and rigidity of motor or load can be improved, in turn
Reliability when raising motor and the power output and operation of load；In addition, carrying out electric machine speed regulation transformation to some old, old engineerings
When, due to the shortening of overall axial length, it can make permanent magnet speed regulation device of the present invention that there is enough axially mounted spaces；
4, it since the present invention significantly shortens the axial length of internal rotor assembly and speed regulation device assembly, and then shortens
The axial length of entire permanent magnet speed regulation device, and then reduce permanent magnet speed regulation device manufacture and installation cost.
Detailed description of the invention
Fig. 1 is mechanical structure schematic diagram of the invention.
Fig. 2 is A-A the schematic diagram of the section structure of the invention.
Fig. 3 is B-B the schematic diagram of the section structure of the invention.
Fig. 4 is the enlarged view at I of Fig. 3.
Fig. 5 is fixed resistance box and resistance box lead schematic diagram.
Fig. 6 is step speed regulation resistance box and resistance box lead schematic diagram.
Fig. 7 is stepless speed regulation resistance box and resistance box lead schematic diagram.
In figure: 1, permanent magnet, 2, stator winding outlet, 3, outlet box, 4, power output shaft, 5, right end bearing, 6, right end
Bearing block, 7, internal rotor coil windings, 8, shell, 9, stator core, 10, stator coil winding, 11, bottom plate, 12, flush type axis
It holds, 13, left end bearing, 14, left end bearing block, 15, power input shaft, 16, resistance box lead, 17, step speed regulation resistance box,
18, fixed resistance box, 19, internal rotor iron core, 20, stepless speed regulation resistance box, 21, frequency converter.
Specific embodiment
The present invention is further described with reference to the accompanying drawing.As shown in figs. 1-7, the permanent magnetism tune of a kind of phase-wound rotor
Speed variator, including outer rotor assembly, internal rotor assembly, speed regulation device assembly, external resistance box assembly and base assembly；Described
Outer rotor assembly includes permanent magnet 1, flush type bearing 12 and power input shaft 15；The internal rotor assembly includes internal rotor line
Enclose winding 7, internal rotor iron core 19 and power output shaft 4；The speed regulation device assembly include stator core 9, stator coil around
Group 10, shell 8, outlet box 3 and stator winding outlet 2；The external resistance box assembly include grade speed adjusting resistance case 17 and
External resistance box lead 16；The base assembly includes bottom plate 11, left end bearing block 14, left end bearing 13, right end bearing block 6
And right end bearing 5.
The power input shaft 15 is stepped shaft structure, and connect by left end bearing block 14 with engine that power is defeated
Enter the maximum inscribed circle surface installation permanent magnet 1 of axis 15, flush type bearing 12 is installed at the type hole of center.
In the internal rotor assembly, internal rotor coil windings 7 and internal rotor iron core 19 constitute phase-wound rotor structure；It is interior
Rotor core 19 is formed by the silicon steel plate stacking of double-sided insulation, and the outer circle of internal rotor iron core 19 is uniform-distribution with rotor line ring recess,
The internal rotor coil windings 7 are embedded in rotor line ring recess, and internal rotor coil windings 7 are connected into three with insulated conductor
Mutually or multiphase symmetric winding, the outlet beginning and line end of the every phase winding connected into are shorted；The internal rotor iron core
19 are fixedly connected on outer round surface corresponding to power output shaft 4 by key joint or interference fit type；The power is defeated
Shaft 4 is stepped shaft structure, and one end is connected by flush type bearing 12 with power input shaft 15, and the other end passes through right end bearing 5
It is connected with right end bearing block 6, the middle part of power output shaft 4 is fixed by key or interference fit type and internal rotor coil windings 7
Connection.
In the speed regulation device assembly, the outer surface of shell 8 is fixedly connected with base assembly insole board 11, inner surface with
Stator core 9 is fixedly connected；The inner circle of stator core 9 is uniform-distribution with stator slot winding, and the stator coil winding 10 is embedding
Enter in stator slot winding, the depth of rebate H of stator slot winding is greater than the maximum outside diameter of power input shaft 15；Stator core 9 is pressed
Make the inner surface in shell 8；The stator winding outlet 2 of stator coil winding 10 is drawn by outlet box 3；The outer connecting resistance
Case includes step speed regulation resistance box 17, stepless speed regulation resistance box 20 and fixed resistance box 18, and by resistance box lead 16 with
Stator winding outlet 2 is connected.
In the base assembly, type hole is provided on the left end bearing block 14；13 outer circle of the left end bearing peace
Mounted in the type hole inner surface of left end bearing block 14, inner hole is mounted on the outer round surface of the corresponding diameter of axle of power input shaft 15；Institute
The right end bearing block 6 stated is provided with type hole；5 outer circle of right end bearing is mounted on the type hole inner surface of right end bearing block 6, in
Hole is mounted on the correspondence diameter of axle outer round surface of power output shaft 4；Power input shaft 15 and the central axis of power output shaft 4 are same
Axis；The bottom plate 11 is slab construction, is equipped with left end bearing block 14 and right end bearing block 6 thereon.
The step speed regulation resistance box 17 is made of contactor K1~KN and multilevel resistance R1~RN；Described is fixed
Resistance box 18 is made of three fixed energy consumption resistor R of resistance value in parallel.The stepless speed regulation resistance box 20 is by a frequency conversion
Device 21 and one group of energy consumption resistor form.
Further, the structure of the internal rotor coil windings 7 is hard winding, mush winding or scattered winding.
Further, K1~KN probe of contactor, every phase rotor windings string are set in the step speed regulation resistance box 17
Join resistance R1~RN；Each phase resistance R1~RN is parallel connection, and probe of contactor K1~KN is arranged between each phase resistance R1~RN.
Further, the power input shaft 15 is permeability magnetic material axis；11 material of bottom plate is Fine Steel Casting iron
Plate；The power output shaft 4 is Fine Steel Casting iron axis.
Further, the rotor line ring recess is axial groove, and the outer circle circumferencial direction along internal rotor iron core 19 is uniformly distributed, is turned
The center line of sub-line ring recess cross section is conllinear with a radial line of internal rotor iron core 19；The stator slot winding is axial
Slot, the inner circle circumferencial direction along stator core 9 is uniformly distributed, the center line of stator slot winding cross section and a diameter of stator core 9
It is conllinear to line.
Working principle of the present invention is as follows:
Power input shaft 15 and engine of the invention is connected and permanent magnet 1 is made to form rotating excitation field, internal rotor coil windings 7
Cutting magnetic line generates induced potential and then generates induced current, and generated induced current, which forms Lorentz force, makes internal rotor line
It encloses winding 7 to rotate along the direction of rotation of permanent magnet 1, and then internal rotor iron core 19 is driven to rotate；Connect since power output shaft 4 is fixed
It connects in interior rotor core 19, therefore power output shaft 4 is also with the rotation of identical revolving speed.
Speed adjusting mechanism of the invention are as follows:
Due in internal rotor coil windings 7 there are induced current, outside will also generate an Induced magnetic field, with speed regulation device
Stator core 9 and stator coil winding 10 in assembly act on, and an induced electromotive force will be also generated in stator coil winding 10,
And the induced electromotive force in internal rotor coil windings 7 need to balance therewith；By control stator coil winding 10 in induct it is electronic
Gesture, it can be achieved that internally in rotor coil winding 7 induced electromotive force and induced current adjusting, i.e., in increase stator coil winding 10
Induced electromotive force, will weaken internal rotor coil windings 7 in induced current, thus realize output revolving speed reduction；Otherwise subtract
Induced electromotive force in small stator coil winding 10, by induced current in enhancing internal rotor coil windings 7, to realize that output turns
The increase of speed.
There are two types of methods for induced electromotive force in control stator coil winding 10, are respectively as follows:
1, it is connected due to multilevel resistance R1~RN with stator coil winding 10, it can be by controlling step speed regulation resistance box
Multistage contact K1~KN in 17, so as to adjust and control the induced electromotive force of stator coil winding 10.
2, stator coil winding 10 is connected with stepless speed regulation resistance box 20, and frequency converter 21 is utilized in stepless speed regulation resistance box 20
The end voltage of controllable stator coil winding 10, and fallen energy consumption extra in internal rotor coil using energy consumption resistor R.
The present invention is not limited to the present embodiment, any equivalent concepts within the technical scope of the present disclosure or changes
Become, is classified as protection scope of the present invention.
Claims (5)
1. a kind of permanent magnet speed regulation device of phase-wound rotor, including it is outer rotor assembly, internal rotor assembly, speed regulation device assembly, outer
Connecting resistance box assembly and base assembly；The outer rotor assembly includes permanent magnet (1), flush type bearing (12) and power input
Axis (15)；The internal rotor assembly includes internal rotor coil windings (7), internal rotor iron core (19) and power output shaft (4)；Institute
The speed regulation device assembly stated includes stator core (9), stator coil winding (10), shell (8), outlet box (3) and stator winding
Outlet (2)；The external resistance box assembly includes grade speed adjusting resistance case (17) and external resistance box lead (16)；Described
Base assembly includes bottom plate (11), left end bearing block (14), left end bearing (13), right end bearing block (6) and right end bearing (5)；
The power input shaft (15) is stepped shaft structure, and connect by left end bearing block (14) with engine that power is defeated
Enter the maximum inscribed circle surface installation permanent magnet (1) of axis (15), flush type bearing (12) are installed at the type hole of center；
It is characterized by: internal rotor coil windings (7) and internal rotor iron core (19) constitute Wound-rotor type in the internal rotor assembly
Rotor structure；Internal rotor iron core (19) is formed by the silicon steel plate stacking of double-sided insulation, and the outer circle of internal rotor iron core (19) is uniformly divided
Cloth rotor line ring recess, the internal rotor coil windings (7) be embedded in rotor line ring recess, and with insulated conductor by internal rotor
Coil windings (7) connect into three-phase or multiphase symmetric winding, and the outlet beginning and line end of the every phase winding connected into are short
It connects；The internal rotor iron core (19) is fixedly connected on corresponding to power output shaft (4) by key joint or interference fit type
Outer round surface；The power output shaft (4) is stepped shaft structure, and one end passes through flush type bearing (12) and power input shaft
(15) be connected, the other end is connected by right end bearing (5) with right end bearing block (6), the middle part of power output shaft (4) pass through key or
Interference fit type is fixedly connected with internal rotor coil windings (7)；
In the speed regulation device assembly, the outer surface of shell (8) is fixedly connected with base assembly insole board (11), inner surface with
Stator core (9) is fixedly connected；The inner circle of stator core (9) is uniform-distribution with stator slot winding, the stator coil winding
(10) it is embedded in stator slot winding, the depth of rebate H of stator slot winding is greater than the maximum outside diameter of power input shaft (15)；Stator
Iron core (9) is compressed on the inner surface of shell (8)；The stator winding outlet (2) of stator coil winding (10) is drawn by outlet box (3)
Out；The external resistance box includes a grade speed adjusting resistance case (17), stepless speed regulation resistance box (20) and fixed resistance box
(18), and by resistance box lead (16) it is connected with stator winding outlet (2)；
In the base assembly, type hole is provided on the left end bearing block (14)；Left end bearing (13) the outer circle peace
Mounted in the type hole inner surface of left end bearing block (14), inner hole is mounted on the outer circle table of power input shaft (15) the corresponding diameter of axle
Face；The right end bearing block (6) is provided with type hole；Described right end bearing (5) outer circle is mounted on the type hole of right end bearing block (6)
Inner surface, inner hole are mounted on the correspondence diameter of axle outer round surface of power output shaft (4)；Power input shaft (15) and power output shaft
(4) central axis coaxial；The bottom plate (11) is slab construction, is equipped with left end bearing block (14) and right end bearing thereon
Seat (6)；
The step speed regulation resistance box (17) is made of contactor K1~KN and multilevel resistance R1~RN；The fixed electricity
Resistance case (18) is made of three fixed energy consumption resistor R of resistance value in parallel；The stepless speed regulation resistance box (20) is become by one
Frequency device (21) is formed with one group of energy consumption resistor.
2. a kind of permanent magnet speed regulation device of phase-wound rotor according to claim 1, it is characterised in that: the internal rotor
The structure of coil windings (7) is hard winding, mush winding or scattered winding.
3. a kind of permanent magnet speed regulation device of phase-wound rotor according to claim 1, it is characterised in that: described has grade tune
K1~KN probe of contactor, every phase rotor windings series resistance R1~RN are set in fast resistance box (17)；Each phase resistance R1~RN
For parallel connection, probe of contactor K1~KN is set between each phase resistance R1~RN.
4. a kind of permanent magnet speed regulation device of phase-wound rotor according to claim 1, it is characterised in that: the power is defeated
Entering axis (15) is permeability magnetic material axis；Bottom plate (11) material is Fine Steel Casting iron plate；The power output shaft (4) is excellent
Matter carbon steel shaft.
5. a kind of permanent magnet speed regulation device of phase-wound rotor according to claim 1, it is characterised in that: the rotor line
Ring recess is axial groove, and the outer circle circumferencial direction along internal rotor iron core (19) is uniformly distributed, the center line of rotor line ring recess cross section with it is interior
One radial line of rotor core (19) is conllinear；The stator slot winding is axial groove, along the inner circle circumference of stator core (9)
Direction is uniformly distributed, and the center line of stator slot winding cross section and a radial line of stator core (9) are conllinear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811544338.8A CN109412386A (en) | 2018-12-17 | 2018-12-17 | A kind of phase-wound rotor permanent magnet speed regulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811544338.8A CN109412386A (en) | 2018-12-17 | 2018-12-17 | A kind of phase-wound rotor permanent magnet speed regulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109412386A true CN109412386A (en) | 2019-03-01 |
Family
ID=65459522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811544338.8A Pending CN109412386A (en) | 2018-12-17 | 2018-12-17 | A kind of phase-wound rotor permanent magnet speed regulation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109412386A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116436254A (en) * | 2023-06-13 | 2023-07-14 | 成都理工大学 | Multistage torque amplification self-reduction motor based on composite excitation structure |
-
2018
- 2018-12-17 CN CN201811544338.8A patent/CN109412386A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116436254A (en) * | 2023-06-13 | 2023-07-14 | 成都理工大学 | Multistage torque amplification self-reduction motor based on composite excitation structure |
| CN116436254B (en) * | 2023-06-13 | 2023-09-12 | 成都理工大学 | Multistage torque amplification self-reduction motor based on composite excitation structure |
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