CN106374431A - Overtemperature electronic protector for electric motor winding - Google Patents
Overtemperature electronic protector for electric motor winding Download PDFInfo
- Publication number
- CN106374431A CN106374431A CN201610812789.XA CN201610812789A CN106374431A CN 106374431 A CN106374431 A CN 106374431A CN 201610812789 A CN201610812789 A CN 201610812789A CN 106374431 A CN106374431 A CN 106374431A
- Authority
- CN
- China
- Prior art keywords
- motor winding
- overtemperature
- electric motor
- electronic protector
- motor
- 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
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
- H02H5/042—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using temperature dependent resistors
Landscapes
- Protection Of Generators And Motors (AREA)
Abstract
The invention discloses an overtemperature electronic protector for an electric motor winding, and belongs to the electromechanical application field. The overtemperature electronic protector adopts thermistors (2) with negative temperature coefficients, wherein multiple thermistor elements with negative temperature coefficients are connected in series to be tightly attached to surfaces of each phase of coils of the motor winding (1) and to be connected to a signal input end of a single chip microcomputer controller (3); the temperature of the electric motor coil winding is sensed through the thermosensitive characteristic of the thermistors with negative temperature coefficients; and whether machine shutdown protection needs to be executed or not is controlled through programming analysis in the single chip microcomputer controller (3) according to the set temperature. The overtemperature electronic protector for the electric motor winding provided by the invention is quite suitable for most of alternating current asynchronous high-power and low-power electric motor users; and the overtemperature electronic protector has the characteristics of low manufacturing cost, small size, capability of achieving a waterproof property, functional intelligence, convenience in use, and the like.
Description
Technical field
A kind of motor winding overtemperature electronic protector. belong to electromechanical applications field.
Technical background
People are during productive life all the time. often use various AC asynchronous motors, due to a variety of causes
As over loading. power supply is unstable. and machinery is stuck. motor rotor stall. three phase mains is seriously uneven. and three phase mains lacks a phase
Electricity. Exposure to Sunlight etc., make motor winding often exceed specified temperature work. time length. motor winding is aging. then burns
Bad machine winding, makes people cause very big economic loss. and give people productive life and bring very big inconvenience, people adopt
Various protection mistakes are applied. such as. threshold currents are protected. and voltage limit is protected. open-phase protection. staff on duty etc., but also whether very effect
Preferable.
Content of the invention
A kind of motor winding overtemperature electronic protector of my invention, extraordinary solves this problem. it be by
Multiple negative tempperature coefficient thermistor elements. tightly attached machine winding coil surface. quote negative tempperature coefficient thermistor temperature-sensitive special
Property (resistance value with own temperature change and change). to perceive the temperature of motor winding winding. analyzed by Single Chip Microcomputer (SCM) program.
According to the temperature setting. overtemperature alarm. and show instant temperature. and failure code. for reference, according to the temperature of setting
Degree. control. the need of stoppage protection, treat after shutdown that electromotor winding temperature is down in safe temperature range, a kind of motor
Winding overtemperature electronic protector restarts motor (except artificial shutdown), a kind of this motor winding overtemperature Electronic Protection
Device. it is suitable for major part alternating current asynchronous high or low power motor user, due to low cost of manufacture. small volume. water proof type can be made. work(
Can be intelligent, easy to use. life-span length. reliability is high. and can be numerous motor producers and motor use the features such as unmanned
Family wishes to have.
Accompanying drawing is a kind of structural representation of motor winding overtemperature electronic protector of the present invention.
A kind of motor winding overtemperature electronic protector is the 2 negative tempperature coefficient thermistor elements by 1 motor winding,
3 singlechip controllers, 4 display, 5 selection keys, 6 determination buttons, 8 motor power lines, a kind of 9 motor are pressed in 7 settings
The electric power incoming line of winding overtemperature electronic protector, 10 relay switches etc. form.
Tightly it is attached to three 2 negative tempperature coefficient thermistor element series connection and 3 singlechip controllers on 1 motor winding surface
It is connected. control 10 relay switches to motor winding power. electric motor normal working. each parts cooperate. formed
Unified entirety.
A kind of motor winding overtemperature electronic protector is such work, when a kind of motor winding overtemperature Electronic Protection
Device. when being arranged on request on protected motor. according to the requirement of user can customize work (as timed power on/off. or
Reserved to start up or close etc.) finish and switch on power after, at this moment tightly can be attached on 1 motor winding surface automatically into working condition
Three 2 negative tempperature coefficient thermistor element series connection are connected with 3 singlechip controllers. control 10 relay switches, to electronic
Machine winding power. electric motor normal working, lead rotor processed and be stuck when certain reason such as machinery is out of order. stall. electronic
Machine operating current rises violently. the temperature of motor winding winding quickly rises violently. when temperature is raised to 120 DEG C (setting protected
Motor winding safe upper temperature) 2 negative tempperature coefficient thermistor elements. total resistance is less than what .3 singlechip controller set
Threshold values .3 singlechip controller controls 10 relay switches to disconnect .1 motor winding power-off and report to the police. display failure code, this
When motor because transshipping again. temperature too fast 3 singlechip controllers that rise violently will not reset motor, wait artificial treatment.
The .1 motor winding when certain reason such as induction-motor load exceeds rated load 20 percent, temperature slowly rises
Height, when more than 120 DEG C .3 singlechip controller controls 10 relay switch power-off .1 motor winding power-off to shut down. wait 1
When electromotor winding temperature drops in safety range 3 singlechip controllers control 10 relay switches closure. to 1 motor around
Group power supply. electric motor normal working, (except artificial shutdown).
When certain reason such as motor brownout .1 motor winding. operating current raises, and temperature also slowly rises
High. when more than 120 DEG C .3 singlechip controller controls 10 relay switches to disconnect .1 motor winding power-off and shuts down. treat 1 electricity
When motivation winding temperature drops in safety range, 3 singlechip controllers control 10 relay switch closures. to 1 motor winding
Power supply. electric motor normal working, (except artificial shutdown).
When certain reason such as motor overtension .1 motor winding. electric current raises, and temperature also slowly raises, when
.3 singlechip controller during more than 120 DEG C. control 10 relay switches to disconnect .1 motor winding power-off and shut down. treat 1 motor
When winding temperature drops in safety range, 3 singlechip controllers control 10 relay switch closures. supply to 1 motor winding
Electricity. electric motor normal working, (except artificial shutdown).
When certain reason such as motor three-phase voltage is seriously uneven or phase shortage .1 motor winding. certain several winding
Electric current raises, and temperature also quickly raises. .3 singlechip controller when more than 120 DEG C. control 10 relay switches to disconnect 1 electronic
Machine winding power-off is shut down. and because certain several winding currents rising is too fast, temperature also quickly raises .3 singlechip controller will not again
Start motor. and report to the police. display failure code. wait artificial treatment.
A kind of motor winding overtemperature electronic protector. through above-mentioned 0007-0011 work process one perfectly electricity
Motivation intelligent protection device just completes. a lot of valuable time of people and maintenance cost can be saved, people can efficiently pacify again
Complete using various AC asynchronous motors.
Certainly above-described embodiment only technology design to illustrate the invention and feature it is therefore intended that allowing people will appreciate that this
The content of invention according to this enforcement it is impossible to be limited the scope of the invention with this, all according to main technical schemes of the present invention
The equivalent transformation that spirit is done or modification all should be included within the scope of the present invention.
Claims (5)
1. a kind of motor winding overtemperature electronic protector, according to its whole structure and installation connected mode, it includes: is being protected
The every phase coil of 1 motor winding on.Tightly have the thermistor (temperature) sensor of 2 negative temperature coefficients, the temperature-sensitive of this 2 negative temperature coefficient
Electric resistance sensor. access 3 singlechip controller signal input parts for many series connection.
2. a kind of motor winding overtemperature electronic protector. it also includes 3 single-chip microcomputers being made up of electronic components such as single-chip microcomputers
Controller.
3. according to claim 2, in 3 singlechip controllers. write and store several functions control program. and pass through 4 display
Display. select to use for user.
4. according to claim 3, in 3 singlechip controllers. equipped with multiple 10 relay switches, control 1 motor winding energising
And power-off.
5. according to claim 1-2-3-4, tightly it is attached to the critesistor of 2 negative temperature coefficients on the every phase coil of 1 motor winding
Sensor. cooperate with 3 singlechip controllers. be integrally formed unified control system. root Ju be manually set control exchange different
Step motor. normal work in the scope of safety.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610812789.XA CN106374431A (en) | 2016-08-29 | 2016-08-29 | Overtemperature electronic protector for electric motor winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610812789.XA CN106374431A (en) | 2016-08-29 | 2016-08-29 | Overtemperature electronic protector for electric motor winding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106374431A true CN106374431A (en) | 2017-02-01 |
Family
ID=57900497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610812789.XA Pending CN106374431A (en) | 2016-08-29 | 2016-08-29 | Overtemperature electronic protector for electric motor winding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106374431A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2612148Y (en) * | 2003-03-26 | 2004-04-14 | 深圳市贝顿科技有限公司 | Soft starting protector of dynamo |
| CN1965455A (en) * | 2004-06-10 | 2007-05-16 | Abb有限公司 | Isolated measurement circuit for sensor resistance |
| CN204347216U (en) * | 2014-12-29 | 2015-05-20 | 无锡新大力电机有限公司 | A kind of multifunction electric apparatus test device |
| CN104977091A (en) * | 2014-04-08 | 2015-10-14 | 舍弗勒技术股份两合公司 | Temperature sensor assembly for motor, electric automobile and mounting method |
| US20150311695A1 (en) * | 2013-01-17 | 2015-10-29 | Trane International Inc. | Variable frequency drive overvoltage protection |
-
2016
- 2016-08-29 CN CN201610812789.XA patent/CN106374431A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2612148Y (en) * | 2003-03-26 | 2004-04-14 | 深圳市贝顿科技有限公司 | Soft starting protector of dynamo |
| CN1965455A (en) * | 2004-06-10 | 2007-05-16 | Abb有限公司 | Isolated measurement circuit for sensor resistance |
| US20150311695A1 (en) * | 2013-01-17 | 2015-10-29 | Trane International Inc. | Variable frequency drive overvoltage protection |
| CN104977091A (en) * | 2014-04-08 | 2015-10-14 | 舍弗勒技术股份两合公司 | Temperature sensor assembly for motor, electric automobile and mounting method |
| CN204347216U (en) * | 2014-12-29 | 2015-05-20 | 无锡新大力电机有限公司 | A kind of multifunction electric apparatus test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| DD01 | Delivery of document by public notice |
Addressee: Shen Qianbao Document name: the First Notification of an Office Action |
|
| DD01 | Delivery of document by public notice | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170201 |
|
| WD01 | Invention patent application deemed withdrawn after publication |