CN209267364U - A kind of electric device - Google Patents
A kind of electric device Download PDFInfo
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- CN209267364U CN209267364U CN201822165991.5U CN201822165991U CN209267364U CN 209267364 U CN209267364 U CN 209267364U CN 201822165991 U CN201822165991 U CN 201822165991U CN 209267364 U CN209267364 U CN 209267364U
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- rotor
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- electric device
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Abstract
The utility model relates to motor technology fields, refer in particular to a kind of electric device, including casing, the first rotor and the second rotor for the power generation mechanism of power generation and with casing rotation connection, power generation mechanism is equipped with power generation rotor, the first rotor is connected with brake and clutch, the first rotor is connected by the power generation rotor of clutch and power generation mechanism, and bitrochanteric inside is arranged in the first rotor or the inside of the first rotor is arranged in the second rotor.The utility model is not only able to carry out current limliting to reduce influence of the starting current to power grid and peripheral equipment, and torque with higher when starting, can satisfy the occasion for needing larger starting torque.
Description
Technical field
The utility model relates to motor technology field, a kind of electric device and its control method are referred in particular to.
Background technique
Squirrel-cage asynchronous motor because having many advantages, such as that structure is simple, easily manufactured, reliable for operation, cheap, and
There are also higher efficiency and applicable mechanical property, and be widely used in industry, agricultural, transportation, national defense industry and
In other all trades and professions.But it also has the shortcomings that obvious, and starting performance is poor, and starting current is excessive, and starting torque is little.
Across-the-line starting mode is limited by motor power (output) and transformer capacity, general middle-size and small-size squirrel-cage asynchronous motor
Can be with across-the-line starting, across-the-line starting equipment is simple, and method is easy.However for the motor of relatively high power, this starting
The shortcomings that mode is: starting current is big, if transformer capacity is smaller, will cause network voltage degradation, threatens other electricity consumptions
The normal work of equipment；If Fraquent start, excessive starting current will also cause that the motor feels hot, influence electrical machinery life, work as transformation
When device capacity is unsatisfactory for across-the-line starting condition, reduced voltage starting mode must be used.The a part of motor by power grid when reduced voltage starting
Voltage.This start mode can limit starting current, but because torque is directly proportional to voltage squared, so reduced voltage starting also subtracts significantly
Low starting torque, therefore this reduced voltage starting mode is suitable for not needing the occasion of larger starting torque.Traditional decompression rises
Dynamic such as Y/ Δ starting, auto-induction voltage-reduced starting mode, starting effect is poor and has secondary current impact, and high failure rate, loss is big,
Using being increasingly restricted.
It in the prior art can also be by the way of soft start come started squirrel-cage formula asynchronous motor.A kind of mode is to pass through
The IGBT group angle of flow inside micro computer control soft starter realizes AC voltage adjusting, can control the voltage of motor, makes
It is gradually increased in starting process, but size thyristor voltage regulator can not solve and rushing when soft start because of its harmonic problem
Electric current is hit, prospect of the application is restricted.
Summary of the invention
The utility model provides a kind of electric device for problem of the prior art, which can limit when starting
Higher starting torque is kept while stream.
The utility model adopts the following technical solution: a kind of electric device, including casing, for power generation power generation mechanism with
And the first rotor and the second rotor with casing rotation connection, power generation mechanism are equipped with power generation rotor, the first rotor is connected with system
Dynamic device and clutch, the first rotor are connected by the power generation rotor of clutch and power generation mechanism, and the first rotor is arranged at second turn
The inside of the first rotor is arranged in the inside or the second rotor of son.
Preferably, the power generation rotor of power generation mechanism is made of permanent magnet.
Preferably, the clutch is hysteresis cluth or electromagnetic slip clutches or magnetic powder cluth or hydraulic clutch
Device or pneumatic clutch.
Preferably, the first rotor and the second rotor are respectively equipped with the conducting bar or described of armature winding, cage
The first rotor and the second rotor are respectively equipped with the conducting bar of cage, armature winding；The electric device further include processor and
For detecting the detection unit of the electric current of armature winding, the output end of detection unit by the control terminal of processor and brake with
And the control terminal electrical connection of clutch.
Preferably, the electric device further includes slip ring, external power supply is powered by slip ring to armature winding.
Preferably, the electric device further includes shaft coupling, the first rotor is connect by shaft coupling with clutch.
The utility model has the beneficial effects that electric device is not only able to carry out current limliting to reduce starting current to electricity when starting
The influence of net and peripheral equipment, and torque with higher can satisfy the occasion for needing larger starting torque.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment one.
Fig. 2 is the structural schematic diagram of the utility model embodiment two.
Fig. 3 is the structural schematic diagram of the utility model embodiment three.
Fig. 4 is the structural schematic diagram of the utility model embodiment four.
Appended drawing reference are as follows: 1, casing；2, the first rotor；21, the second rotor；3, power generation mechanism；4, brake；5, clutch
Device；6, armature winding；7, conducting bar；8, slip ring；9, shaft coupling.
Specific embodiment
For the ease of the understanding of those skilled in the art, the utility model is made below with reference to embodiment and attached drawing further
Explanation, the content that embodiment refers to not is restriction to the utility model.The utility model is carried out below in conjunction with attached drawing
Detailed description.
Embodiment one
As shown in Figure 1, a kind of electric device, including casing 1, for power generation power generation mechanism 3 and rotated with casing 1
The first rotor 2 of connection and the second rotor 21, power generation mechanism 3 be equipped with power generation rotor, the first rotor 2 be connected with brake 4 and from
Clutch 5, the first rotor 2 are connect by clutch 5 with the power generation rotor of power generation mechanism 3, and the second rotor 21 is arranged in the first rotor 2
Inside.
The revolutional slip when motor starting of routine between rotor and air-gap field is larger, air-gap field cutting rotor conductor
Speed is larger, therefore starting current is larger.Using the second rotor 21 as output shaft in the present embodiment, and the first rotor 2 is equipped with electricity
Pivot winding 6, the second rotor 21 are equipped with for the conducting bar 7 of cage.When starting, the first rotor 2 and the second rotor 21 are rotated backward, gas
Revolutional slip between gap magnetic field and the second rotor 21 is smaller, therefore starting current is small.The utility model is not necessarily to reduced voltage starting simultaneously, because
This output torque is larger.
The torque that clutch 5 described in the utility model exports is adjustable.When clutch 5 is specially hysteresis cluth or electromagnetism
When slipping clutch or magnetic powder cluth, the excitation current of clutch 5 is passed through by adjusting to adjust turning for the output of clutch 5
Square.When clutch is hydraulic clutch, the torque of the output of clutch 5 is adjusted by hydraulic.When clutch 5 is air clutch
When device, the torque that is exported by pneumatically controlled clutch 5.The workflow of the utility model are as follows: to the first rotor 2 armature around
Group 6 is powered, so that the first rotor 2 and the second rotor 21 reversely rotate, 5 output torque of clutch is then enabled to be gradually increased, thus
So that power generation mechanism 3 converts electric energy for a part of mechanical energy of the first rotor 2 and drops the revolving speed of the first rotor 2 gradually
Low, the revolving speed of the second rotor 21 gradually increases.When the revolving speed of the second rotor 21 reaches certain value, the braking of brake 4 the is utilized
One rotor 2, so that the first rotor 2 is static, the second rotor 21 is run under rated speed at this time.The utility model utilizes generator
Structure 3 comes so that 2 reduction of speed of the first rotor, and converts electric energy for a part of mechanical energy of the first rotor 2, effectively reaches energy regenerating
Effect.Cage conducting bar 7 and gas when the revolving speed of air-gap field is gradually increasing by the preset acceleration time, on the second rotor 21
The relative velocity in gap magnetic field is very low, therefore starting current very little.
When the air-gap field revolving speed between the first rotor 2 and the second rotor 21 is na, the rotating excitation field of the generation of armature winding 6
Revolving speed is n0, the revolving speed of the first rotor 2 is nbWhen, air-gap field revolving speed is na=n0-nb, therefore can be by adjusting the first rotor
2 revolving speed adjusts air-gap field revolving speed, to realize the adjusting to 21 revolving speed of the second rotor.Control 5 output torque of clutch
Consecutive variations, the electric energy and also change to the braking moment of the generation of the first rotor 2 that power generation mechanism 3 generates, 2 He of the first rotor
The revolving speed of air-gap field between second rotor 21 also recurs variation, so that 21 revolving speed of the second rotor can recur variation.
Therefore adjust clutch 5 output torque can continuously smooth adjust the second rotor 21 output revolving speed.
The power generation rotor of power generation mechanism 3 is made of permanent magnet.The first rotor 2 rotates, when clutch 5 engages, power generation mechanism 3
It can generate electricity.
The utility model is also able to achieve soft stop function, even the revolving speed of the second rotor 21 be gradually lowered from big to small to
Zero.Detailed process is to enable brake 4 no longer brake the first rotor 2 and continue to adjust the output torque of clutch 5, so that clutch
5 output torque is gradually reduced, so that the revolving speed of the first rotor 2 is gradually increased, so that the revolving speed of the second rotor 21
It is gradually reduced, when the revolving speed very little of the second rotor 21, cutting is passed through the electric current of the armature winding 6 of the first rotor 2.
As shown in Figure 1, the electric device further includes the detection list of processor and the electric current for detecting armature winding 6
The output end of member, detection unit is electrically connected by processor with the control terminal of the control terminal of brake 4 and clutch 5.Processing
Device can be single-chip microcontroller or PLC.The utility model can also limit the output torque of electric device.Output torque and armature around
The wired sexual intercourse of electric current of group 6, when output torque reaches certain value, the electric current of armature winding 6 also reaches certain value, this season
Brake 4 no longer brakes the first rotor 2, enable 5 slippage of clutch run so that the second rotor 21 with certain rotational speed and by its
A part of mechanical energy passes to power generation mechanism 3 to generate electricity, to realize the limitation to output torque, prevents electric device from crossing carrying
Row.
As shown in Figure 1, the electric device further includes slip ring 8, external power supply is powered by slip ring 8 to armature winding 6.With
Anti- cord wrap.
As shown in Figure 1, the electric device further includes shaft coupling 9, the first rotor 2 passes through shaft coupling 9 and clutch 5
Connection, is transferred to clutch 5 and power generation mechanism 3 for the mechanical energy of the first rotor 2.
Embodiment two
As shown in Fig. 2, the difference between this embodiment and the first embodiment lies in the first rotor 2 is arranged in the second rotor 21
Portion.
Embodiment three
As shown in figure 3, the difference between this embodiment and the first embodiment lies in the second rotor 21 be equipped with armature winding 6, first turn
Son 2 is equipped with the conducting bar 7 of cage.
Example IV
As shown in figure 4, the difference between this embodiment and the first embodiment lies in the inside of the first rotor 2 is arranged in the second rotor 21
And second rotor 21 be equipped with armature winding 6, the first rotor 2 be equipped with cage conducting bar 7.
The above is only the utility model preferred embodiment, is not made in any form to the utility model
Limitation, although the utility model is disclosed as above with preferred embodiment, is not intended to limit the utility model, any to be familiar with sheet
Technical professional is not departing within the scope of technical solutions of the utility model, makes when using the technology contents of the disclosure above
A little change or the equivalent embodiment for being modified to equivalent variations, but it is all without departing from the content of the technical scheme of the utility model, foundation
The utility model technology refers to any simple modification, equivalent change and modification to the above embodiments, belongs to practical
In the range of new technique scheme.
Claims (6)
1. a kind of electric device, it is characterised in that: including casing (1), for the power generation mechanism (3) and and casing of power generation
(1) the first rotor (2) and the second rotor (21) being rotatablely connected, power generation mechanism (3) are equipped with power generation rotor, and the first rotor (2) is even
It is connected to brake (4) and clutch (5), the first rotor (2) is connect by clutch (5) with the power generation rotor of power generation mechanism (3),
The first rotor (2) setting is arranged in the inside of the second rotor (21) or the second rotor (21) in the inside of the first rotor (2).
2. a kind of electric device according to claim 1, it is characterised in that: the power generation rotor of power generation mechanism (3) is by permanent magnetism
System at.
3. a kind of electric device according to claim 1, it is characterised in that: the clutch (5) be hysteresis cluth or
Electromagnetic slip clutches or magnetic powder cluth or hydraulic clutch or pneumatic clutch.
4. a kind of electric device according to claim 3, it is characterised in that: the first rotor (2) and the second rotor
(21) armature winding (6), the conducting bar (7) of cage or the first rotor (2) and the second rotor (21) are respectively equipped with respectively
Conducting bar (7), armature winding (6) equipped with cage；
The electric device further includes the detection unit of processor and the electric current for detecting armature winding (6), detection unit
Output end be electrically connected with the control terminal of the control terminal of brake (4) and clutch (5) by processor.
5. a kind of electric device according to claim 1, it is characterised in that: the electric device further includes slip ring (8), outside
Portion's power supply is powered by slip ring (8) to armature winding (6).
6. a kind of electric device according to claim 1, it is characterised in that: the electric device further includes shaft coupling (9),
The first rotor (2) is connect by shaft coupling (9) with clutch (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822165991.5U CN209267364U (en) | 2018-12-21 | 2018-12-21 | A kind of electric device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822165991.5U CN209267364U (en) | 2018-12-21 | 2018-12-21 | A kind of electric device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209267364U true CN209267364U (en) | 2019-08-16 |
Family
ID=67560755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822165991.5U Active CN209267364U (en) | 2018-12-21 | 2018-12-21 | A kind of electric device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209267364U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109474124A (en) * | 2018-12-21 | 2019-03-15 | 广东力源工程技术有限公司 | A kind of electric device and its control method |
-
2018
- 2018-12-21 CN CN201822165991.5U patent/CN209267364U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109474124A (en) * | 2018-12-21 | 2019-03-15 | 广东力源工程技术有限公司 | A kind of electric device and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200522 Address after: 523000 Room 305, unit 2, building 1, No. 8, Keji 2nd Road, Songshanhu Park, Dongguan City, Guangdong Province (cluster registration) Patentee after: One time motor (Dongguan) Co., Ltd Address before: 523000, No. 130 East Fu Yuan Road, Nancheng District, Guangdong, Dongguan Patentee before: GUANGDONG LIYUAN ENGINEERING TECHNOLOGY Co.,Ltd. |