CN106100468A - A kind of rotor null adjustment method, device, circuit and rotary transformer - Google Patents
A kind of rotor null adjustment method, device, circuit and rotary transformer Download PDFInfo
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- CN106100468A CN106100468A CN201610536553.8A CN201610536553A CN106100468A CN 106100468 A CN106100468 A CN 106100468A CN 201610536553 A CN201610536553 A CN 201610536553A CN 106100468 A CN106100468 A CN 106100468A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000001360 synchronised effect Effects 0.000 claims abstract description 76
- 230000004083 survival effect Effects 0.000 claims description 7
- 230000005669 field effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
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Abstract
Embodiment of the present invention discloses a kind of rotor null adjustment method, device, circuit and rotary transformer.Described method includes: control the flow direction of electric current in the three-phase synchronous motor being connected on DC source, make one the first constant magnetic field of the internal generation of described three-phase synchronous motor, the direction that direction is rotor zero-bit that described first magnetic field is pointed to, described first magnetic field promotes described rotor to turn to zero-bit.Embodiment of the present invention controls the magnetic direction of rotor by controlling the resultant current of three-phase synchronous motor, motor is dragged in rotor zero-bit, thus the zero-bit of calibrating rotary transformer is consistent with the zero-bit of permagnetic synchronous motor, improve motor torque, rotary speed precision and dynamic property.
Description
Technical field
Embodiment of the present invention relates to motor control technology field, particularly relates to a kind of rotor null adjustment side
Method, device and circuit and rotary transformer.
Background technology
Rotary transformer, is a kind of electromagnetic sensor, also known as synchronizing decomposer.It is a kind of to measure the small-sized of angle
Ac motor, is used for measuring rotating shaft angular travel and the angular velocity of rotating object, is made up of stator and rotor.Wherein stator winding
As the former limit of transformator, accepting excitation voltage, excitation frequency is generally with 400,3000 and 5000Hz etc..Rotor windings is as change
The secondary of depressor, obtains induced voltage by electromagnetic coupled.
Rotating transformer of permanent magnet synchronous motor is a kind of device for detecting permanent-magnetic synchronous motor rotor magnetic field position, its
Essence is also a small-sized alternating current generator.Inventor during realizing the present invention, find that prior art at least exists below
Problem: owing to the restriction in fabrication and installation, the zero-bit of rotary transformer and the zero-bit of permagnetic synchronous motor exist deviation, cause electricity
Machine torque, rotary speed precision are the lowest, and dynamic property is bad, is easily damaged controller, how to calibrate rotary transformer zero-bit,
The zero-bit making rotary transformer is consistent with the zero-bit of permagnetic synchronous motor, is that prior art has problem to be solved.
Summary of the invention
Embodiment of the present invention is mainly solving the technical problems that existing rotating transformer of permanent magnet synchronous motor is owing to making
There is deviation in the restriction installed, the zero-bit of rotary transformer and the zero-bit of permagnetic synchronous motor, causes motor torque, rotating speed essence
Spending the lowest, dynamic property is bad, is easily damaged controller.
For solving above-mentioned technical problem, the technical scheme that embodiment of the present invention uses is: provide a kind of motor to turn
Sub-null adjustment method, described method includes:
Control the flow direction of electric current in the three-phase synchronous motor being connected on DC source, make inside described three-phase synchronous motor
Producing a first constant magnetic field, the direction that direction is rotor zero-bit that described first magnetic field is pointed to, described first magnetic field pushes away
Dynamic described rotor turns to zero-bit.
Wherein, described method also includes:
Control the flow direction of electric current in the three-phase synchronous motor being connected on DC source, make inside described three-phase synchronous motor
Producing a second constant magnetic field, the direction that described second magnetic field is pointed to is the direction deviateing described rotor zero-bit.
Wherein, the direction that described second magnetic field is pointed to is 120 ° or the angle of 240 ° with the direction of described rotor zero-bit.
Wherein, the electric current in described three-phase synchronous motor is flowed through less than or equal to the two of described three-phase synchronous motor rated current
/ mono-.
Wherein, the electric current flowed through in described three-phase synchronous motor incrementally increases, described in flow through in described three-phase synchronous motor
Electric current maximum less than or equal to described three-phase synchronous motor rated current 1/2nd.
Wherein, described first magnetic field and the second magnetic field set have the survival time, and the described survival time is more than or equal to 200ms.
For solving above-mentioned technical problem, another technical scheme that embodiment of the present invention uses is: provide one to synchronize
Rotor null adjustment device, including:
Power supply unit, said supply unit is DC source, and said supply unit is connected with three-phase synchronous motor；
Control unit, described control unit is connected between said supply unit and described three-phase synchronous motor, described control
Unit processed is for controlling the flow direction of electric current in described three-phase synchronous motor, so that described three-phase synchronous motor is internal produces a perseverance
The first fixed magnetic field, the direction that direction is rotor zero-bit that described first magnetic field is pointed to.
For solving above-mentioned technical problem, the technical scheme that embodiment of the present invention also uses is: provide a kind of motor
Rotor null adjustment circuit, including: electric machine controller and three-phase synchronous motor；
Described electric machine controller includes: DC source, the first switching tube, second switch pipe, the 3rd switching tube, the 4th switch
Pipe, the 5th switching tube and the 6th switching tube；
Described DC source two ends be provided with first be connected in parallel point, second be connected in parallel point, the 3rd be connected in parallel point, the 4th
It is connected in parallel point, the 5th is connected in parallel a little and the 6th is connected in parallel a little；
Described first be connected in parallel a little and second be connected in parallel a little between be connected in series with the first switching tube and second switch
Pipe, the described 3rd be connected in parallel a little and the 4th be connected in parallel a little between be connected in series with the 3rd switching tube and the 4th switching tube, institute
State the 5th be connected in parallel a little and the 6th be connected in parallel a little between be connected in series with the 5th switching tube and the 6th switching tube；
The first junction point, described 3rd switching tube and the 4th switch it is provided with between described first switching tube and second switch pipe
It is provided with the second junction point between pipe, between described 5th switching tube and the 6th switching tube, is provided with the 3rd junction point；
Described three-phase synchronous motor is connected with described first junction point, the second junction point and the 3rd junction point respectively.
Wherein, described first switching tube, second switch pipe, the 3rd switching tube, the 4th switching tube, the 5th switching tube and the 6th
Switching tube is field effect transistor.
For solving above-mentioned technical problem, the technical scheme that embodiment of the present invention also uses is: provide a kind of motor
Rotary transformer, described rotary transformer includes rotor null adjustment circuit of the present invention.
Embodiment of the present invention provides the benefit that: be different from the situation of prior art, and embodiment of the present invention is by control
The resultant current of three-phase synchronous motor processed controls the magnetic direction of rotor, is dragged to by motor in rotor zero-bit, from
And the zero-bit of calibrating rotary transformer is consistent with the zero-bit of permagnetic synchronous motor, improve motor torque, rotary speed precision and dynamic
Energy.
Accompanying drawing explanation
Fig. 1 is the flow chart of the present invention a kind of rotor null adjustment method；
Fig. 2 is the structural representation of the present invention a kind of rotor null adjustment device；
Fig. 3 is the structural representation of the present invention a kind of rotor null adjustment circuit；
Fig. 4 is the schematic diagram of the present invention a kind of rotor null adjustment circuit work；
Fig. 5 is the flow chart of the present invention a kind of rotor null adjustment circuit work.
Detailed description of the invention
Embodiment 1
Refering to Fig. 1, embodiment of the present invention includes: a kind of rotor null adjustment method, and described method includes:
S1: control the flow direction of electric current in the three-phase synchronous motor being connected on DC source, make described three-phase synchronous motor
One the second constant magnetic field of internal generation, the direction that described second magnetic field is pointed to is the direction deviateing described rotor zero-bit.
S2: control the flow direction of electric current in the three-phase synchronous motor being connected on DC source, make described three-phase synchronous motor
One the first constant magnetic field of internal generation, the direction that direction is rotor zero-bit that described first magnetic field is pointed to, described first magnetic
Field promotes described rotor to turn to zero-bit.
The principle of this method is to apply three-phase dc electric current by three-phase synchronous motor, makes the space of three-phase dc electric current
Resultant current direction is the zero-bit direction of rotor, and the electric current of synthesis will produce the first constant magnetic field, and this first magnetic field will
Rotor turns to zero-bit.Owing to being not aware that the particular location of rotor at the beginning, it is impossible to directly apply three-phase dc
Electric current synthesizes the first magnetic field, and otherwise rotor is possible without turning to zero-bit, therefore, it is also desirable to control to be connected to unidirectional current
The flow direction of electric current in three-phase synchronous motor on source, makes one the second constant magnetic field of the internal generation of described three-phase synchronous motor,
The direction that described second magnetic field is pointed to is the direction deviateing described rotor zero-bit, the direction of described second magnetic field sensing and described turn
The direction of sub-zero-bit is 120 ° or the angle of 240 °, and first being turned to by rotor with the direction of described rotor zero-bit is 120 °
Or on the direction of 240 °, then produce described first magnetic field by resultant current rotor is turned to zero-bit.In order to prevent electricity
Flow through and burn out greatly controller and motor, and have the resistances such as the enough moment frictional force overcoming rotor to make rotor rotate, flow through
Electric current in described three-phase synchronous motor, less than or equal to 1/2nd of described three-phase synchronous motor rated current, flows through described three
Electric current in synchronised motor incrementally increases, described in flow through the maximum of electric current in described three-phase synchronous motor less than or equal to institute
Stating 1/2nd of three-phase synchronous motor rated current, meanwhile, described first magnetic field and the second magnetic field set have survival time, institute
State the survival time more than or equal to 200ms.
The embodiment of the present invention provides the control method of a kind of rotor zero-bit, by controlling the synthesis of three-phase synchronous motor
Electric current controls the magnetic direction of rotor, is dragged to by motor in rotor zero-bit, thus calibrates the zero of rotary transformer
Position is consistent with the zero-bit of permagnetic synchronous motor, improves motor torque, rotary speed precision and dynamic property.
Embodiment 2
As in figure 2 it is shown, the embodiment of the present invention also provides for a kind of rotor null adjustment device, including:
Power supply unit 1, said supply unit is DC source, and said supply unit is connected with three-phase synchronous motor；
Control unit 2, described control unit is connected between said supply unit and described three-phase synchronous motor, described control
Unit processed is for controlling the flow direction of electric current in described three-phase synchronous motor, so that described three-phase synchronous motor is internal produces a perseverance
The first fixed magnetic field, the direction that direction is rotor zero-bit that described first magnetic field is pointed to.
The embodiment of the present invention provides the adjusting means of a kind of rotor zero-bit, is matched with control unit by power supply unit
Close the magnetic direction making the resultant current of three-phase synchronous motor control rotor, motor be dragged in rotor zero-bit,
Thus the zero-bit of calibrating rotary transformer is consistent with the zero-bit of permagnetic synchronous motor, improve motor torque, rotary speed precision and dynamically
Performance.
Embodiment 3
As it is shown on figure 3, the embodiment of the present invention provides a kind of rotor null adjustment circuit, including: electric machine controller with
Three-phase synchronous motor；
Described electric machine controller include DC source W, the first switching tube Q1, second switch pipe Q2, the 3rd switching tube Q3,
Four switching tube Q4, the 5th switching tube Q5 and the 6th switching tube Q6；
Described DC source two ends W is provided with and first is connected in parallel an a1, second is connected in parallel an a2, the 3rd is connected in parallel a little
A3, the 4th it is connected in parallel an a4, the 5th is connected in parallel an a5 and the 6th and is connected in parallel an a6；
Described first is connected in parallel an a1 and second is connected in parallel between an a2 and is connected in series with the first switching tube Q1 and
Two switching tube Q2, the described 3rd be connected in parallel an a3 and the 4th be connected in parallel between an a4 be connected in series with the 3rd switching tube Q3 with
4th switching tube Q4, the described 5th is connected in parallel an a5 and the 6th is connected in parallel between an a6 and is connected in series with the 5th switching tube Q5
With the 6th switching tube Q6；
Be provided with between described first switching tube Q1 and second switch pipe Q2 the first junction point b1, described 3rd switching tube Q3 with
It is provided with the second junction point b2 between 4th switching tube Q4, is provided with the 3rd between described 5th switching tube Q5 and the 6th switching tube Q6 even
Contact b3；
Described three-phase synchronous motor is respectively with described first junction point b1, the second junction point b2 and the 3rd junction point b3 even
Connect.
Preferably, described first switching tube Q1, second switch pipe Q2, the 3rd switching tube Q3, the 4th switching tube Q4, the 5th open
Closing pipe Q5 and the 6th switching tube Q6 is field effect transistor.
This three-phase synchronous motor is three-phase input, by the first switching tube Q1 on control electric machine controller, second switch
Pipe Q2, the 3rd switching tube Q3, the 4th switching tube Q4, the 5th switching tube Q5 and the 6th switching tube Q6 export three-phase current IA、IBWith
IC, the electric current that definition flows to three-phase synchronous motor from electric machine controller is positive current, controls from three-phase synchronous motor flow direction motor
The electric current of device is negative current, the spatial phase relationship of three-phase current as shown in Figure 4, three-phase current IA、IBAnd ICIn the space of points mutually
Becoming 120 ° of angles, the direction of arrow represents positive direction, electric current IAThe zero-bit direction that positive direction is rotor.
The principle of this rotor null adjustment circuit refer to the former of rotor null adjustment method in embodiment 1
Reason, here is omitted.
Refer to Fig. 5, first turn on Q2 and Q6, for ensureing to have enough moment to overcome the resistances such as friction rotor, incrementally increase
The conducting dutycycle of Q3, i.e. incrementally increases three-phase current IA、IBAnd IC, now IBFor positive current, IAAnd ICFor negative current, three-phase combination
Becoming electric current is 120 °, and rotor is turned to the position of 120 ° by the magnetic field now produced, and in order to prevent, electric current is excessive burns out motor
Controller and three-phase synchronous motor, as three-phase current IA、IBAnd ICIncrease to 1/2nd of three-phase synchronous motor rated current
Time, stop increasing electric current, for guaranteeing that rotor has the position that enough time forwards 120 ° to, make electric current have certain survival time,
Keep direction electric current 200ms, be then powered off Q2, Q3 and Q6；Next conducting Q4 and Q6, incrementally increases the conducting duty of Q1
Ratio, now IAFor positive current, IBAnd ICFor negative current, three-phase resultant current is 0 °, and rotor is rotated by the magnetic field now produced
To the position of 0 °, as three-phase current IA、IBAnd ICIncrease to three-phase synchronous motor rated current two/for the moment, stop increase
Electric current, keeps direction electric current 200ms, is then powered off Q1, Q4 and Q6, now the rotor zero dead stop of three-phase synchronous motor, reads
Go out this value, be the zero value of rotary transformer.
The embodiment of the present invention provides a kind of rotor null adjustment circuit, by motor controller controls three-phase synchronous electricity
Three-phase current on machine, makes the resultant current of three-phase synchronous motor control the magnetic direction of rotor, motor is dragged to electricity
In machine rotor zero-bit, thus the zero-bit calibrating rotary transformer is consistent with the zero-bit of permagnetic synchronous motor, improves motor torque, turns
Speed precision and dynamic property.
Embodiment 4
The embodiment of the present invention also provides for a kind of rotary transformer (not shown), and described rotary transformer includes that the present invention implements
Rotor null adjustment circuit described in example 3, with the null adjustment of the rotary transformer of rotor null adjustment circuit
Principle is consistent with the principle of the rotor null adjustment circuit described in embodiment 3, and here is omitted.
The embodiment of the present invention provides a kind of rotary transformer, and including rotor null adjustment circuit, this circuit is by control
The resultant current of three-phase synchronous motor processed controls the magnetic direction of rotor, is dragged to by motor in rotor zero-bit, from
And the zero-bit of calibrating rotary transformer is consistent with the zero-bit of permagnetic synchronous motor, improve motor torque, rotary speed precision and dynamic
Energy.
The foregoing is only embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every utilization is originally
Equivalent structure or equivalence flow process that description of the invention and accompanying drawing content are made convert, or are directly or indirectly used in what other were correlated with
Technical field, is the most in like manner included in the scope of patent protection of the present invention.
Claims (10)
1. a rotor null adjustment method, it is characterised in that described method includes:
Control the flow direction of electric current in the three-phase synchronous motor being connected on DC source, make the internal generation of described three-phase synchronous motor
One the first constant magnetic field, the direction that direction is rotor zero-bit that described first magnetic field is pointed to, described first magnetic field promotes institute
State rotor and turn to zero-bit.
Rotor null adjustment method the most according to claim 1, it is characterised in that described method also includes:
Control the flow direction of electric current in the three-phase synchronous motor being connected on DC source, make the internal generation of described three-phase synchronous motor
One the second constant magnetic field, the direction that described second magnetic field is pointed to is the direction deviateing described rotor zero-bit.
Rotor null adjustment method the most according to claim 2, it is characterised in that the side that described second magnetic field is pointed to
It is 120 ° or the angle of 240 ° to the direction with described rotor zero-bit.
4. according to the rotor null adjustment method described in claims 1 to 3 any one, it is characterised in that flow through described
Electric current in three-phase synchronous motor is less than or equal to 1/2nd of described three-phase synchronous motor rated current.
Rotor null adjustment method the most according to claim 4, it is characterised in that flow through described three-phase synchronous motor
In electric current incrementally increase, described in flow through the maximum of electric current in described three-phase synchronous motor less than or equal to described three-phase synchronous
/ 2nd of Rated motor electric current.
6. according to the rotor null adjustment method described in claim 2～3 any one, it is characterised in that described first
Magnetic field and the second magnetic field set have the survival time, and the described survival time is more than or equal to 200ms.
7. a rotor null adjustment device, it is characterised in that including:
Power supply unit, said supply unit is DC source, and said supply unit is connected with three-phase synchronous motor；
Control unit, described control unit is connected between said supply unit and described three-phase synchronous motor, and described control is single
Unit for controlling the flow direction of electric current in described three-phase synchronous motor so that described three-phase synchronous motor internal produce one constant
First magnetic field, the direction that direction is rotor zero-bit that described first magnetic field is pointed to.
8. a rotor null adjustment circuit, it is characterised in that including: electric machine controller and three-phase synchronous motor；
Described electric machine controller includes: DC source, the first switching tube, second switch pipe, the 3rd switching tube, the 4th switching tube,
5th switching tube and the 6th switching tube；
Described DC source two ends are provided with and first are connected in parallel point, second are connected in parallel point, the 3rd are connected in parallel point, the 4th in parallel
Junction point, the 5th it is connected in parallel a little and the 6th is connected in parallel a little；
Described first be connected in parallel a little and second be connected in parallel a little between be connected in series with the first switching tube and second switch pipe, institute
State the 3rd be connected in parallel a little and the 4th be connected in parallel a little between be connected in series with the 3rd switching tube and the 4th switching tube, the described 5th
Be connected in parallel a little and the 6th be connected in parallel a little between be connected in series with the 5th switching tube and the 6th switching tube；
Be provided with between described first switching tube and second switch pipe the first junction point, described 3rd switching tube and the 4th switching tube it
Between be provided with the second junction point, be provided with the 3rd junction point between described 5th switching tube and the 6th switching tube；
Described three-phase synchronous motor is connected with described first junction point, the second junction point and the 3rd junction point respectively.
Rotor null adjustment circuit the most according to claim 8, it is characterised in that described first switching tube, second
Switching tube, the 3rd switching tube, the 4th switching tube, the 5th switching tube and the 6th switching tube are field effect transistor.
10. a rotary transformer, it is characterised in that described rotary transformer includes described in claim 8～9 any one
Rotor null adjustment circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610536553.8A CN106100468A (en) | 2016-07-08 | 2016-07-08 | A kind of rotor null adjustment method, device, circuit and rotary transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610536553.8A CN106100468A (en) | 2016-07-08 | 2016-07-08 | A kind of rotor null adjustment method, device, circuit and rotary transformer |
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| CN106100468A true CN106100468A (en) | 2016-11-09 |
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| CN201610536553.8A Pending CN106100468A (en) | 2016-07-08 | 2016-07-08 | A kind of rotor null adjustment method, device, circuit and rotary transformer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107453673A (en) * | 2017-08-04 | 2017-12-08 | 北京新能源汽车股份有限公司 | Method and device for detecting initial position of rotor of motor and motor control system |
| CN109327174A (en) * | 2018-11-14 | 2019-02-12 | 苏州绿控传动科技股份有限公司 | Rotating transformer of permanent magnet synchronous motor zero-bit automatic identifying method |
| CN114389512A (en) * | 2021-12-31 | 2022-04-22 | 上海四横电机制造有限公司 | Method, device, equipment and medium for controlling phase sequence of adjustable speed motor |
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| CN103929100A (en) * | 2014-03-28 | 2014-07-16 | 北京高速拓博科技有限公司 | Method for determining starting initial position of permanent magnet synchronous motor |
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| CN105162372A (en) * | 2015-10-09 | 2015-12-16 | 南车株洲电力机车研究所有限公司 | Method and system for correcting initial zero offset |
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| US20030090262A1 (en) * | 2001-11-12 | 2003-05-15 | International Rectifier Corporation | Rotor angle estimation for permanent magnet synchronous motor drive |
| CN102347722A (en) * | 2010-08-06 | 2012-02-08 | 上海开通数控有限公司 | Method for detecting initial magnetic field position of linear synchronous motor |
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| CN107453673A (en) * | 2017-08-04 | 2017-12-08 | 北京新能源汽车股份有限公司 | Method and device for detecting initial position of rotor of motor and motor control system |
| CN109327174A (en) * | 2018-11-14 | 2019-02-12 | 苏州绿控传动科技股份有限公司 | Rotating transformer of permanent magnet synchronous motor zero-bit automatic identifying method |
| CN114389512A (en) * | 2021-12-31 | 2022-04-22 | 上海四横电机制造有限公司 | Method, device, equipment and medium for controlling phase sequence of adjustable speed motor |
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Application publication date: 20161109 |