CN109120107A - A kind of motor reel electric current inhibition device and method - Google Patents
A kind of motor reel electric current inhibition device and method Download PDFInfo
- Publication number
- CN109120107A CN109120107A CN201811278131.0A CN201811278131A CN109120107A CN 109120107 A CN109120107 A CN 109120107A CN 201811278131 A CN201811278131 A CN 201811278131A CN 109120107 A CN109120107 A CN 109120107A
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- Prior art keywords
- motor
- coil assembly
- inductive coil
- electric current
- induction
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Links
- 238000000034 method Methods 0.000 title claims description 8
- 230000005764 inhibitory process Effects 0.000 title abstract description 6
- 230000006698 induction Effects 0.000 claims abstract description 59
- 230000001939 inductive effect Effects 0.000 claims abstract description 29
- 238000004804 winding Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/0094—Structural association with other electrical or electronic devices
Abstract
A kind of motor reel electric current inhibition device including magnetic field caused by induction shaft current and generates the inductive coil assembly of induced electromotive force and consumes the power consumption component of produced electric energy on inductive coil assembly.By installing inductive coil assembly between motor rotor and bearing of motor, changing magnetic field caused by shaft current can make to generate induced current on inductive coil assembly, by the way that power consumption component is arranged on inductive coil assembly, consume the electric energy in inductive coil assembly, therefore, the energy that shaft current generates can consume on resistance, and then inhibit shaft current on source.
Description
Technical field
The present invention relates to technical field of motors, especially a kind of motor reel electric current inhibits device and method.
Background technique
During motor operation, due to stator core combinated seam, stator silicon steel sheet seam, stator and rotor air
Reasons, the shafts of motor such as gap is uneven, and spindle central and magnetic field center are inconsistent are inevitably endless at one
It is rotated in holosymmetric magnetic field.In this way, an alternating voltage will be generated in both ends of the shaft, so that generating axis on motor rotary shaft
Electric current.
Currently, traditional braking measure is to be separated in the position of bearing of motor inner ring or outer ring using insulating materials, make
Open circuit is constituted at shaft current path, to block shaft current, do so that there are two disadvantages: (1) can not block flow through it is electronic
The shaft current of machine and load bearing, manufactures into electroerosion bearing shaft；(2) for the shaft current for flowing through bearing of motor,
It is equivalent to and is added to a capacitor on this path, which is merely able to the relatively low shaft current of blocking frequency, when frequency compares
The capacitive reactance of Gao Shi, capacitor reduce, and this method is helpless for the inhibition of shaft current.
Summary of the invention
It is an object of the present invention to provide a kind of motor reel electric currents that can solve the above problem to inhibit device and method, to reach
Above-mentioned purpose, the present invention adopts the following technical scheme:
A kind of motor reel electric current inhibits device, including magnetic field caused by induction shaft current and generates the induction of induced electromotive force
The power consumption component of produced electric energy on coil block and consumption inductive coil assembly.
Further, the inductive coil assembly includes several induction coils, and the induction coil is circularly and evenly distributed
In the outer peripheral surface of motor rotary shaft, the magnetic induction line that shaft current generates is vertical with induction coil.When the friendship generated on motor rotary shaft
One timing of electric voltage frequency is flowed, magnetic induction line passes perpendicularly through induction coil, and the magnetic flux on induction coil is maximum, on induction coil
The average induced electromotive force generated is also maximum, and the inhibitory effect of shaft current is preferably also.
Further, the induction coil is one another in series to form closed circuit, and the power consumption component, which is connected on, to be closed back
On the road.
Further, the inductive coil assembly further includes across the induction coil and by induction coil banding in shaft
The cuff of outer wall.
Further, the inductive coil assembly includes solenoid and induction coil, and the solenoid includes direction of winding
Coiling that is vertical with induction coil direction of winding and passing through induction coil.
Further, the solenoid connects to form closed circuit with induction coil, and the power consumption component, which is connected on, to be closed
It closes on circuit.
Further, the power consumption component is resistance.
Further, the inductive coil assembly is arranged between motor rotor and bearing of motor.
Further, the motor is dc motor or ac motor.
In addition, the line of induction is arranged on motor rotary shaft the present invention also provides a kind of motor reel electric current suppressing method
Coil assembly, is arranged power consumption component in inductive coil assembly, and the inductive coil assembly can incude magnetic caused by shaft current
Field simultaneously generates induced electromotive force, and the power consumption component can consume generated electric energy on inductive coil assembly.
By using above-mentioned technical proposal, accessible beneficial effect is, during motor operation, both ends of the shaft
An alternating voltage can be generated, so that generating the shaft current of variation on motor rotary shaft, according to Ampere's law, shaft is suitable at this time
In the straight wire that one is powered, shaft current generates magnetic field, magnetic induction line twisted rotary shaft.Because the voltage at axis both ends is alternating voltage,
Therefore shaft current is variation, and magnetic field is also variation, by installing the line of induction between motor rotor and bearing of motor
It encloses, changing magnetic field caused by shaft current can make to generate induced current on induction coil, by the way that resistance is arranged on coil, disappear
The electric energy in induction coil is consumed, therefore, the energy that shaft current generates can consume on resistance, and then inhibit axis electricity on source
Stream, meanwhile, it can manufacture to avoid to bearing shaft at electroerosion, especially during motor operates in a high frequency, using insulating means
Inhibit shaft current, be equivalent to and increase capacitor in the loop because frequency increases, capacitive reactance is reduced, and insulation effect is poor, high frequency when
The shaft current inhibitory effect of time is poor, but also can effectively inhibit shaft current using technical solutions according to the invention.
Detailed description of the invention
Fig. 1 is the schematic diagram of the embodiment of the present invention one.
Fig. 2 is the schematic diagram of the embodiment of the present invention two.
Specific embodiment
A kind of motor reel electric current inhibition device, including magnetic field caused by induction shaft current and generates induced electromotive force
The power consumption component of produced electric energy, the preferred resistance of power consumption component on inductive coil assembly 1 and consumption inductive coil assembly 1
2, specifically include following two embodiment:
Embodiment one:
As shown in Figure 1, inductive coil assembly 1 includes several induction coils 3 and passes through induction coil 3 and by 3 banding of induction coil
In the cuff 4 of 5 outer wall of shaft.Induction coil 3 is circularly and evenly distributed in the outer peripheral surface of motor rotary shaft 5, shaft current generation
Magnetic induction line is vertical with induction coil 3.Induction coil 3 is one another in series to form closed circuit, and resistance 2 is connected on closed circuit.For
Facilitate the structure for indicating cuff 4, part induction coil 3 is hidden in Fig. 1.
Embodiment two:
As shown in Fig. 2, inductive coil assembly 1 includes solenoid 6 and induction coil 3, solenoid 6 includes direction of winding and the line of induction
It encloses 3 direction of windings vertically and passes through the coiling of induction coil 3, solenoid 6 connects to form closed circuit with induction coil 3, resistance 2
It is connected on closed circuit.For convenience of the structure for indicating solenoid 6, part induction coil 3 is hidden in Fig. 2.
Inductive coil assembly 1 in above-mentioned two embodiment is arranged between motor rotor and bearing of motor, axis
Changing magnetic field caused by electric current can make to generate induced current on induction coil 3, be consumed on induction coil 3 by resistance 2
Electric energy, and then inhibit the shaft current in shaft 5.
When one timing of alternating current voltage frequency generated on motor rotary shaft 5, magnetic induction line passes perpendicularly through induction coil 3, passes through
Magnetic flux on induction coil 3 is maximum, and the average induced electromotive force generated on induction coil 3 is also maximum, the inhibition effect of shaft current
Fruit is preferably also.
Motor is dc motor or ac motor.During motor operation, can all it be generated at 5 both ends of shaft
One frequency alternating voltage relevant to 5 revolving speed of shaft, to generate changing magnetic field.
Working principle of the invention is as follows: during motor operation, 5 both ends of shaft can generate an alternating voltage,
So that generating the shaft current of variation on motor rotary shaft 5, according to Ampere's law, shaft 5 is equivalent to directly leading for an energization at this time
Line, shaft current generate magnetic field, magnetic induction line twisted rotary shaft 5.Because the voltage at axis both ends is alternating voltage, shaft current is variation
, magnetic field is also variation, by installing induction coil 3 between motor rotor and bearing of motor, produced by shaft current
Changing magnetic field can make to generate induced current on induction coil 3, by coil be arranged resistance 2, consume induction coil 3 in
Electric energy, therefore, the energy that shaft current generates can consume on resistance 2, and then inhibit shaft current on source, meanwhile, can be with
It avoids manufacturing into electroerosion bearing shaft, especially during motor operates in a high frequency, inhibits shaft current using insulating means,
It is equivalent to and increases capacitor in the loop, because frequency increases, capacitive reactance is reduced, and insulation effect is poor, shaft current suppression when high frequency
Effect processed is poor, but also can effectively inhibit shaft current using technical solution of the present invention.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the present invention can have various changes, combination and variation.All within the spirits and principles of the present invention, made any
Modification, equivalent replacement, improvement etc., should be included within scope of the presently claimed invention.
Claims (10)
1. a kind of motor reel electric current inhibits device, it is characterised in that: including magnetic field caused by induction shaft current and generate sense
Answer the power consumption component of produced electric energy on the inductive coil assembly and consumption inductive coil assembly of electromotive force.
2. a kind of motor reel electric current according to claim 1 inhibits device, it is characterised in that: the inductive coil assembly
Including several induction coils, the induction coil is circularly and evenly distributed in the outer peripheral surface of motor rotary shaft, shaft current generation
Magnetic induction line is vertical with induction coil.
3. a kind of motor reel electric current according to claim 2 inhibits device, it is characterised in that: the induction coil is each other
Series connection forms closed circuit, and the power consumption component is connected on closed circuit.
4. a kind of motor reel electric current according to claim 2 inhibits device, it is characterised in that: the inductive coil assembly
Further include across the induction coil and by induction coil banding shaft outer wall cuff.
5. a kind of motor reel electric current according to claim 1 inhibits device, it is characterised in that: the inductive coil assembly
Including solenoid and induction coil, the solenoid include direction of winding it is vertical with induction coil direction of winding and pass through the line of induction
The coiling of circle.
6. a kind of motor reel electric current according to claim 5 inhibits device, it is characterised in that: the solenoid and induction
Coil connects to form closed circuit, and the power consumption component is connected on closed circuit.
7. a kind of motor reel electric current according to claim 1 inhibits device, it is characterised in that: the power consumption component is
Resistance.
8. a kind of motor reel electric current according to claim 1 inhibits device, it is characterised in that: the inductive coil assembly
It is arranged between motor rotor and bearing of motor.
9. a kind of motor reel electric current according to claim 1 inhibits device, it is characterised in that: the motor is direct current
Motor or ac motor.
10. a kind of motor reel electric current suppressing method, it is characterised in that: inductive coil assembly is set on motor rotary shaft,
Power consumption component is set in inductive coil assembly, and the inductive coil assembly can incude magnetic field caused by shaft current and generate sense
Electromotive force is answered, the power consumption component can consume generated electric energy on inductive coil assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811278131.0A CN109120107B (en) | 2018-10-30 | 2018-10-30 | Motor shaft current suppression device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811278131.0A CN109120107B (en) | 2018-10-30 | 2018-10-30 | Motor shaft current suppression device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109120107A true CN109120107A (en) | 2019-01-01 |
| CN109120107B CN109120107B (en) | 2020-11-13 |
Family
ID=64855720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811278131.0A Active CN109120107B (en) | 2018-10-30 | 2018-10-30 | Motor shaft current suppression device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109120107B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51136101A (en) * | 1975-05-20 | 1976-11-25 | Mitsubishi Electric Corp | Shaft current preventor |
| JPS6096150A (en) * | 1983-10-31 | 1985-05-29 | Nishishiba Denki Kk | Axial current preventing device of rotary electric machine |
| DE19742622A1 (en) * | 1997-09-26 | 1999-04-08 | Siemens Ag | Method and device for monitoring shaft currents and shaft voltages in a generator shaft |
| EP1445850B1 (en) * | 2003-02-07 | 2008-07-30 | Ab Skf | Arrangement for protecting the bearing of an electrical machine against demaging shaft current |
| CN106981936A (en) * | 2016-01-15 | 2017-07-25 | 丰田自动车株式会社 | Stator and electrical machine |
-
2018
- 2018-10-30 CN CN201811278131.0A patent/CN109120107B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51136101A (en) * | 1975-05-20 | 1976-11-25 | Mitsubishi Electric Corp | Shaft current preventor |
| JPS6096150A (en) * | 1983-10-31 | 1985-05-29 | Nishishiba Denki Kk | Axial current preventing device of rotary electric machine |
| DE19742622A1 (en) * | 1997-09-26 | 1999-04-08 | Siemens Ag | Method and device for monitoring shaft currents and shaft voltages in a generator shaft |
| EP1445850B1 (en) * | 2003-02-07 | 2008-07-30 | Ab Skf | Arrangement for protecting the bearing of an electrical machine against demaging shaft current |
| CN106981936A (en) * | 2016-01-15 | 2017-07-25 | 丰田自动车株式会社 | Stator and electrical machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109120107B (en) | 2020-11-13 |
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Denomination of invention: A motor shaft current suppression device and method Effective date of registration: 20231215 Granted publication date: 20201113 Pledgee: Canton bank Limited by Share Ltd. Yangjiang branch Pledgor: ENGGA (YANGJIANG) ELECTRIC CO.,LTD. Registration number: Y2023980072238 |
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