CN101018033A - Motor starter - Google Patents
Motor starter Download PDFInfo
- Publication number
- CN101018033A CN101018033A CNA200710005443XA CN200710005443A CN101018033A CN 101018033 A CN101018033 A CN 101018033A CN A200710005443X A CNA200710005443X A CN A200710005443XA CN 200710005443 A CN200710005443 A CN 200710005443A CN 101018033 A CN101018033 A CN 101018033A
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- CN
- China
- Prior art keywords
- motor
- starter
- switching device
- electric capacity
- ptc resistance
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- 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.)
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/42—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor
- H02P1/44—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor by phase-splitting with a capacitor
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor And Converter Starters (AREA)
Abstract
The invention relates to an electric motor, especially a starter for line starting electric motor. The starter has a main winding (4), and a start winding (12) connected in series with an operating capacitor (14). A series connection of a starting capacitor (17) and a positive temperature coefficient (PTC) resistance (19) is connected to the operating capacitor in parallel. A parallel connection of a switching device (20) and the resistance is connected in series with the starting capacitor.
Description
Technical field
The present invention relates to a kind of starter that is used for motor, starts (Linestart) motor especially for line, it has at least one main coil and at least one actuating coil, this actuating coil is connected with mutual capacitance, and this mutual capacitance is with the series circuit parallel connection of being made up of startup electric capacity and PTC resistance.
Background technology
From the different starter flexible program of the known synchronized asynchronous motor of international open source literature WO 2005/006520 A1, this starter has main coil and ancillary coil, and it is connected with mutual capacitance.In a kind of starter flexible program (Figure 13), PTC resistance is with starting capacitances in series.This series circuit is with the mutual capacitance parallel connection.In another starter flexible program (Figure 13), triac is connected PTC resistance and starts between the electric capacity.This triac constitutes a switching device together with flip-flop circuit, and it is connected motor when starting with startup electric capacity.After startup, motor and the connection that starts between the electric capacity are interrupted by described switching device.In another kind of starter flexible program (Fig. 4), the bimetal release device is connected PTC resistance and starts between the electric capacity.In another kind of starter flexible program (Fig. 5), by the bimetal release device with start series circuit that electric capacity forms with the parallel connection of PTC resistance.The shortcoming of series circuit shown in Figure 5 is, bimetallic 41 can frequent open and close, and this can cause wearing and tearing.Reason is, when this bimetallic for example was closed and starts electric capacity 27 and connect, it can open and cut off startup electric capacity.When bimetallic will occur this situation owing to flowing through when wherein electric current reaches definite temperature.When this bimetallic was closed and starts electric capacity and cut off, current flowing PTC 42 so.This PTC is because its electric current heating of flowing through.These heats can cause the bimetallic closure.Start thus that electric capacity is switched on and this process can start anew.In another kind of starter flexible program (Fig. 6), between PTC resistance and startup electric capacity, connect relay.Do not comprise PTC resistance in the another kind of starter flexible program (Fig. 8), between ancillary coil and startup electric capacity, connect relay.In Fig. 8, current relay 44 just is switched on after starting a bit of time.This current relay is opened (Fig. 7) when starting and is connected with coil 124 with about 15 milliseconds delay after making current.In this minor time slice, in mutual capacitance, form high voltage, when starting electric capacity 27 by relay 44 connections, this can cause puncturing the strong short circuit electric current that starts electric capacity 27.Described problem can solve by a resistance.But this resistance can cause loss.In Fig. 6, use a PTC to address this problem.This PTC will start electric capacity and connect a period of time, up to its electric current that flows into from mutual capacitance 28 greatly to making it obtain big like this resistance, thereby it can start electric capacity and cuts off.
Summary of the invention
Task of the present invention is that the aforementioned part according to claim 1 provides a kind of motor, particularly starter of line actuating motor of being used for, and it is simple in structure and can make economically.
A kind ofly be used for motor, especially for the starter of line actuating motor, it has at least one main coil and at least one actuating coil, this actuating coil is connected with mutual capacitance, this mutual capacitance is with the series circuit parallel connection of being made up of startup electric capacity and PTC resistance, this task is finished like this in described starter, and promptly the parallel circuits of being made up of switching device and PTC resistance starts capacitances in series together.This series circuit is again with the mutual capacitance parallel connection.Switching device can be used for PTC resistance short circuit like this.Switching device has been realized startup electric capacity individually with the mutual capacitance parallel connection, and does not need the through-flow PTC resistance of electric current.When motor started or start, switching device was opened, thereby PTC resistance plays a role.In case through a certain period of time or reach in other words and to surpass particular current level, switching device is put up with PTC resistance short circuit, thereby PTC resistance no longer plays a role.Be that according to a significant advantage of solution of the present invention two electric capacity connect from the outset, and be in operation and also keep connecting.In the disclosed solution, staring torque is dwindled by PTC resistance in Fig. 6 of international open source literature WO 2005/006520 A1, in comparison, provides all available staring torques at this.Described in addition problem is avoided by big short circuit electric current when current relay is closed, because PTC reduces electric current, and the voltage of two electric capacity can be described as identical.
A preferred embodiment of starter is characterised in that switching device comprises current relay, and it is opened when motor start-up, and when reaching in advance the predetermined electric current level closure.When switching device was in open mode, electric current was by starting the PTC resistance of electric capacity and series connection with it.When reaching in advance the predetermined electric current level, PTC resistance is only flow through startup electric capacity by short circuit and electric current, and no longer flows through PTC resistance.PTC resistance in most of start-up time by the current relay short circuit.The advantage of doing like this is that PTC resistance can have than size littler in traditional starter or littler quality.Thus can cost saving and energy.
Another preferred embodiment of starter is characterised in that, described current relay links to each other with main coil like this, and promptly it depends on by the electric current of main coil and opens or closed.Realize the automatic control of switching device thus in simple mode.
Another preferred embodiment of starter is characterised in that in case surpass prior predetermined electric current level, so described current relay is opened.For levels of current prior regulation, that the decision current relay is opened, be preferably with the levels of current of decision current relay closure identical.
Another preferred embodiment of starter is characterised in that the described parallel circuits of being made up of switching device and PTC resistance is connected actuating coil and starts between the electric capacity.Also can be connected between the parallel circuits of forming by switching device and PTC resistance and actuating coil starting electric capacity.
Another preferred embodiment of starter is characterised in that mutual capacitance is parallel to the parallel circuits of being made up of switching device and PTC resistance and starts the series circuit that electric capacity is formed together.
The invention still further relates to a kind of motor, particularly a kind of line actuating motor, it has previously described starter.
The invention still further relates to a kind of compressor especially for household electrical appliance, it has hermetically enclosed compressor case, is provided with previously described motor in this shell.
The invention still further relates to a kind of method that is used to start or start previously described motor, described switching device is opened when motor starts or start, in case through a certain period of time or reach in other words and to surpass particular current level, described switching device is just closed.By moving of switching device, PTC resistance is by short circuit, thereby it no longer plays a role.
Other advantages of the present invention, feature and details provide in description subsequently, wherein describe embodiment with reference to the accompanying drawings in detail.At this, can be respectively independent or important combination in any to the present invention in claim and the feature in specification, mentioned.
Description of drawings
Accompanying drawing illustrates the circuit according to line actuating motor 1 of the present invention.
Embodiment
This line actuating motor 1 comprises two lead bifurcateds 2 and 3, and main coil 4 is arranged between them, and this main coil also is known as the coil that travels (Fahrwicklung).Main coil travels coil 4 in other words by connection lead 5,6 power supplies with the joint 7,8 that is connecting power supply.Actuating coil 12 is arranged between lead bifurcated 3 and the another one lead bifurcated 10.
Another one wire installation 13 and mutual capacitance 14 are connected between lead bifurcated 2 and 10.Start electric capacity 17 and be parallel to mutual capacitance 14, and be connected between lead bifurcated 2 and 10 with the parallel circuits of forming by switching device 20 and PTC resistance 19 from lead bifurcated 2.Starting electric capacity 17 is arranged between lead bifurcated 2 and the another one lead bifurcated 22.Switching device 20 is arranged between lead bifurcated 22 and the lead bifurcated 10.PTC resistance 19 is parallel to switching device 20 and is connected between lead bifurcated 22 and 13.Lead bifurcated 13 is between lead bifurcated 10 and mutual capacitance 14.
Switching device 20 comprises a relay 24 with the armature 26 that can move around.A free end at armature 26 is provided with contact element 28.This contact element 28 has distance in the position that illustrates of armature 26 with contact position 31 and 32.These contact positions 31 and 32 are arranged between lead bifurcated 10 and 22, and are used at the lead that interrupts between contact position 31 and 32 between lead bifurcated 10 and 22.If contact element 28 contacts with 32 with contact position 31, the connection between the contact element 28 formation contact positions 31 and 32 so.The conduction of finishing thus between lead bifurcated 10 and 22 connects.
A vertical section of armature 26 extends through switch coil 34.This switch coil 34 is arranged on lead bifurcated 2 and main coil or travels between the coil 4.In case do not have or have only very little electric current by main coil 4 and switch coil 34, relay 24 is opened so, contact element 28 and armature 26 are in the position that illustrates in other words.If the electric current by main coil 4 and switch coil 34 reaches or surpass prior predetermined electric current level, armature 26 moves up so, interconnects with contact position 31 and 32 up to contact element 28.Thus, with the PTC resistance 19 of switching device 20 parallel connections by short circuit.
In the example that illustrates, line actuating motor 1 comprises a main coil 4 and an actuating coil 12.But this line actuating motor 1 also can comprise the coil and more than one actuating coil of travelling more than.Can have the resistance that raises along with temperature with the PTC resistance 19 that starts electric capacity 17 series connection.
When online actuating motor 1 starts, also be known as the startup electric capacity 17 that starts electric capacity and be used to the staring torque that reaches bigger.This staring torque is used for overcoming the load that is caused by line actuating motor 1 at the asynchronous run duration of motor.Start electric capacity in addition and help the synchronous of line actuating motor rotor.By forming rotating magnetic field, the two-phase system of this rotating magnetic field in the stator that starts electric capacity 17 online actuating motors in electric capacity, to cause by phase shift.
According to a further aspect in the invention, the parallel circuits of being made up of current relay 24 and PTC resistance 19 is connected with starting electric capacity 17 between lead bifurcated 10 and 22.During current relay 24 is opened, guarantee to start electric capacity 17 and 19 series connection of PTC resistance thus.Current relay 24 arranges like this, promptly when reaching or surpass prior predetermined electric current level with PTC resistance 19 short circuits.This current relay 24 has been realized long start-up time, and it is only limited by actuating coil 12.After with PTC resistance 19 short circuits, start electric capacity 17 and connect with current relay 24 series connection.Can reduce the size of PTC resistance 19 thus.Use new starter can realize temporary transient unrestricted start-up time, because PTC resistance 19 was eliminated in other words by short circuit after the short time.By the relay 24 of closure, be not subjected to PTC resistance 19 to obtain the direct parallel circuits of electric capacity 14 and 17 with influencing.
Claims (9)
1. be used for motor, especially for the starter of line actuating motor, it has at least one main coil (4) and at least one actuating coil (12), the same mutual capacitance of this actuating coil (14) series connection, this mutual capacitance is with the series circuit parallel connection of being made up of startup electric capacity (17) and PTC resistance (19), it is characterized in that, connect with described startup electric capacity (17) by the parallel circuits that switching device (20) and PTC resistance (19) are formed.
2. starter according to claim 1 is characterized in that, described switching device (20) comprises relay (24), and it is opened when motor (1) starts and closure when reaching prior predetermined electric current level.
3. starter according to claim 2 is characterized in that, described relay (24) links to each other with main coil like this, and promptly it depends on by the electric current of main coil (4) and opens and/or closure.
4. according to claim 2 or 3 described starters, it is characterized in that in case surpass prior predetermined electric current level, described relay (24) is opened.
5. according to each described starter in the aforementioned claim, it is characterized in that the described parallel circuits of being made up of switching device (20) and PTC resistance (19) is connected actuating coil (12) and starts between the electric capacity (17).
6. according to each described starter in the aforementioned claim, it is characterized in that described mutual capacitance (14) is parallel to the parallel circuits of being made up of switching device (20) and PTC resistance (19) and starts the series circuit that electric capacity (17) is formed together.
7. motor particularly has the line actuating motor of each described starter in the aforementioned claim.
8. compressor, especially for the compressor of household electrical appliance, it has hermetically enclosed compressor case, is provided with in this shell according to each described motor in the aforementioned claim.
9. be used to start or start the method for motor according to claim 7, it is characterized in that, described switching device (20) is opened when motor starts or start, and in case through a certain period of time or reach in other words and to surpass a particular current level, described switching device is just closed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200610007266 DE102006007266A1 (en) | 2006-02-09 | 2006-02-09 | Line starting electric motor`s starter for household appliance, has start winding connected in series with operating capacitor, and parallel connection of switching device and resistance connected in series with starting capacitor |
| DE102006007266.9 | 2006-02-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101018033A true CN101018033A (en) | 2007-08-15 |
Family
ID=38288767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200710005443XA Pending CN101018033A (en) | 2006-02-09 | 2007-02-08 | Motor starter |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101018033A (en) |
| DE (1) | DE102006007266A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101895100A (en) * | 2010-07-02 | 2010-11-24 | 贵阳新光电气有限公司 | Method for preventing false action of direct current single-point grounding of relay and product thereof |
| CN102640064A (en) * | 2009-10-22 | 2012-08-15 | 思科普有限责任公司 | A motor and a relay for a motor |
| CN102891639A (en) * | 2011-06-23 | 2013-01-23 | 森萨塔科技麻省公司 | Assembly of electric motor starter components |
| CN104426429A (en) * | 2013-08-26 | 2015-03-18 | 森萨塔科技麻省公司 | Positive-temperature-coefficient thermistor starter |
| CN108900115A (en) * | 2018-08-24 | 2018-11-27 | 国家电网有限公司 | Water-storage static frequency changer self-adaptive current control method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102377375B (en) * | 2010-07-12 | 2014-03-12 | 思科普有限责任公司 | Starting device used in motor |
| DE102012009883A1 (en) * | 2012-05-18 | 2013-11-21 | Diehl Ako Stiftung & Co. Kg | Circuit arrangement for driving an electrical load |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2847456C2 (en) * | 1978-11-02 | 1982-04-29 | Danfoss A/S, 6430 Nordborg | Starting circuit for a compressor arrangement |
| JP2007527189A (en) * | 2003-07-09 | 2007-09-20 | 松下電器産業株式会社 | Induction synchronous motor and hermetic electric compressor using the same |
-
2006
- 2006-02-09 DE DE200610007266 patent/DE102006007266A1/en not_active Withdrawn
-
2007
- 2007-02-08 CN CNA200710005443XA patent/CN101018033A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102640064A (en) * | 2009-10-22 | 2012-08-15 | 思科普有限责任公司 | A motor and a relay for a motor |
| CN102640064B (en) * | 2009-10-22 | 2015-12-09 | 思科普有限责任公司 | Motor and the relay for motor |
| CN101895100A (en) * | 2010-07-02 | 2010-11-24 | 贵阳新光电气有限公司 | Method for preventing false action of direct current single-point grounding of relay and product thereof |
| CN102891639A (en) * | 2011-06-23 | 2013-01-23 | 森萨塔科技麻省公司 | Assembly of electric motor starter components |
| CN102891639B (en) * | 2011-06-23 | 2016-05-18 | 森萨塔科技麻省公司 | The assembling of motor starter assembly |
| CN104426429A (en) * | 2013-08-26 | 2015-03-18 | 森萨塔科技麻省公司 | Positive-temperature-coefficient thermistor starter |
| CN104426429B (en) * | 2013-08-26 | 2019-10-18 | 森萨塔科技公司 | Positive temperature coefficient thermistor starter |
| CN108900115A (en) * | 2018-08-24 | 2018-11-27 | 国家电网有限公司 | Water-storage static frequency changer self-adaptive current control method |
| CN108900115B (en) * | 2018-08-24 | 2021-06-22 | 国家电网有限公司 | Self-adaptive current control method for pumped storage static frequency converter |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102006007266A1 (en) | 2007-08-23 |
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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 | ||
| ASS | Succession or assignment of patent right |
Owner name: DANFOSS HOUSEHOLD COMPRESSORS GMBH Free format text: FORMER OWNER: DANFOSS FLENSBURG GMBH Effective date: 20110727 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20110727 Address after: Germany Flensburg Applicant after: Danforth home compressors Ltd Address before: Germany Flensburg Applicant before: Danfoss Flensburg limited liability company |
|
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20070815 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |