CN108173467B - Circuit for controlling motor and control system - Google Patents
Circuit for controlling motor and control system Download PDFInfo
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- CN108173467B CN108173467B CN201810157594.5A CN201810157594A CN108173467B CN 108173467 B CN108173467 B CN 108173467B CN 201810157594 A CN201810157594 A CN 201810157594A CN 108173467 B CN108173467 B CN 108173467B
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- inversion
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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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
-
- 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
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
-
- 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
- H02P2209/00—Indexing scheme relating to controlling arrangements characterised by the waveform of the supplied voltage or current
- H02P2209/11—Sinusoidal waveform
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
Circuit for controlling motor provided by the invention and control system, are related to control technology field.Wherein, circuit for controlling motor includes: the first rectification subelement and the second rectification subelement that input terminal is connect with AC power source respectively；The the first inversion subelement and the second inversion subelement that output end is connect with the control winding of AC servo motor and excitation winding respectively；The the first driving subelement and the second driving subelement that power end is connect with the output end of the second rectification subelement respectively；Control unit, the output end of the control unit is connect with the input terminal of the input terminal of the first driving subelement and the second driving subelement respectively, exports two groups of AC sinusoidal voltages that amplitude is identical, frequency is identical, phase difference is 90 ° to control winding and excitation winding respectively to control the first inversion subelement and the second inversion subelement.By above-mentioned setting, can improve in the prior art to the problem of the control effect difference of AC servo motor.
Description
Technical field
The present invention relates to control technology fields, in particular to a kind of circuit for controlling motor and control system.
Background technique
It is also more and more using the equipment of the technology with the continuous development of control technology.Wherein, AC servo motor is made
It is widely paid close attention to for multi-field common motive power outputting apparatus, performances such as a kind of life and industrial productions.It is ground through inventor
Study carefully discovery, there is control effect difference in the existing control technology to AC servo motor.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of circuit for controlling motor and control system, to improve existing skill
To the problem of the control effect difference of AC servo motor in art.
To achieve the above object, the embodiment of the present invention adopts the following technical scheme that
A kind of circuit for controlling motor, comprising:
Rectification unit, the first rectification subelement and the second commutator list being connect respectively with AC power source including input terminal
Member；
Inversion unit, the first inversion connecting respectively with the output end of the first rectification subelement including input terminal are single
Member and the second inversion subelement, wherein the output end of the first inversion subelement and the control winding of AC servo motor connect
It connects, the output end of the second inversion subelement is connect with the excitation winding of the AC servo motor；
Driving unit, the first driving connecting respectively with the output end of the second rectification subelement including power end are single
Member and the second driving subelement, wherein the control of the output end and the first inversion subelement of the first driving subelement
The output end of end connection, the second driving subelement is connect with the control terminal of the second inversion subelement；
Control unit, the input terminal and described second that the output end of the control unit drives subelement with described first respectively
The input terminal connection of subelement is driven, to control the first inversion subelement and the second inversion subelement respectively to described
Control winding and the excitation winding export two groups of AC sinusoidal voltages that amplitude is identical, frequency is identical, phase difference is 90 °.
In the embodiment of the present invention preferably selects, in above-mentioned circuit for controlling motor, the first inversion subelement packet
It includes:
The first field-effect tube that control terminal is connect with the output end of the first driving subelement；
The second field-effect tube that control terminal is connect with the output end of the first driving subelement, second field-effect tube
The first output end as the first inversion subelement after hot end is connect with the cold end of first field-effect tube
It is connect with the first end of the control winding, cold end and ground connection；
The third field-effect tube that control terminal is connect with the output end of the first driving subelement, the third field-effect tube
Input terminal as the first inversion subelement and institute after hot end is connect with the hot end of first field-effect tube
State the output end connection of the first rectification subelement；
The 4th field-effect tube that control terminal is connect with the output end of the first driving subelement, the 4th field-effect tube
Second output terminal as the first inversion subelement after hot end is connect with the cold end of the third field-effect tube
It is connect with the second end of the control winding, cold end ground connection.
In the embodiment of the present invention preferably selects, in above-mentioned circuit for controlling motor, the first inversion subelement is also
Include:
First discharge resistance, one end of first discharge resistance connect with the control terminal of first field-effect tube, are another
End is connect with the cold end of first field-effect tube；
Second discharge resistance, one end of second discharge resistance connect with the control terminal of second field-effect tube, are another
End is connect with the cold end of second field-effect tube；
Third discharge resistance, one end of the third discharge resistance connect with the control terminal of the third field-effect tube, are another
End is connect with the cold end of the third field-effect tube；
4th discharge resistance, one end of the 4th discharge resistance connect with the control terminal of the 4th field-effect tube, are another
End is connect with the cold end of the 4th field-effect tube.
In the embodiment of the present invention preferably selects, in above-mentioned circuit for controlling motor, the first inversion subelement is also
Include:
First diode, the cathode of the first diode are connect with the hot end of first field-effect tube；
Second diode, which is zener diode, and cathode is connect with the anode of the first diode；
First triode, the control terminal of first triode connect with the anode of second diode, hot end with
The control terminal of first field-effect tube connects；
Second triode, the hot end of second triode connect with the cold end of first triode, low electricity
Position end ground connection；
First divider resistance, one end of first divider resistance connect with the control terminal of first field-effect tube, are another
End is connect with the control terminal of second triode；
Second divider resistance, one end of second divider resistance connect with the control terminal of second triode, the other end
Ground connection.
In the embodiment of the present invention preferably selects, in above-mentioned circuit for controlling motor, the first inversion subelement is also
Including third diode, the 4th diode, third divider resistance, the 4th divider resistance, the 5th divider resistance, the 6th partial pressure electricity
Resistance, third transistor and electric capacity of voltage regulation, wherein the 4th diode is zener diode；
The anode of the third diode is connect with the hot end of first field-effect tube, cathode and the third divide
One end of piezoresistance connects, and the other end of the third divider resistance is connect with one end of the 4th divider resistance, and described the
The other end of four divider resistances is connect with one end of the 5th divider resistance, the other end of the 5th divider resistance with it is described
The cathode of second diode connects, and the control terminal of the third transistor is connected to the third divider resistance and 4th point described
Between piezoresistance, hot end is connect with the cathode of second diode, cold end is connect by the 6th divider resistance
Ground, the cathode of the 4th diode is connected between the 4th divider resistance and the 5th divider resistance, plus earth,
One end of the electric capacity of voltage regulation is connected between the 4th divider resistance and the 5th divider resistance, the other end is grounded.
In the embodiment of the present invention preferably selects, in above-mentioned circuit for controlling motor, the first driving subelement packet
Include four groups of drive modules, and power end is connect with the output end of the second rectification subelement respectively, input terminal respectively with it is described
Control unit each output end connection, output end respectively with first field-effect tube, the second field-effect tube, third field-effect tube
And the 4th field-effect tube control terminal connection, control corresponding the respectively with the control signal exported according to described control unit
One field-effect tube, the second field-effect tube, third field-effect tube and the 4th field-effect tube.
In the embodiment of the present invention preferably selects, in above-mentioned circuit for controlling motor, any one group of drive module includes:
5th field-effect tube, the control terminal of the 5th field-effect tube and an output end of described control unit connect, are low
Potential end ground connection；
6th field-effect tube, the control terminal of the 6th field-effect tube connect with the hot end of the 5th field-effect tube,
Hot end ground connection；
7th field-effect tube, the control terminal of the 7th field-effect tube connect with the hot end of the 5th field-effect tube,
Hot end as the drive module power end with it is described second rectification subelement output end connect, cold end with it is described
As the output end of the drive module and first field-effect tube, second effect after the cold end connection of 6th field-effect tube
The control terminal of Ying Guan, third field-effect tube or the 4th field-effect tube connect；
Pull-up resistor, one end of the pull-up resistor connect with the hot end of the 7th field-effect tube, the other end and institute
State the hot end connection of the 5th field-effect tube；
Wherein, the polarity phase of the 6th field-effect tube and the 7th field-effect tube.
In the embodiment of the present invention preferably selects, in above-mentioned circuit for controlling motor, the inversion unit, driving unit
And control unit is integrated in same circuit board.
In the embodiment of the present invention preferably selects, in above-mentioned circuit for controlling motor, described control unit includes:
Multiple output ends of processor, the processor are connect with the input terminal of each drive module respectively, with to each driving mould
Block output control signal；
Inductance, one end of the inductance are connect with the ground terminal of the processor, the other end and second field-effect tube and
It is grounded after the cold end connection of 4th field-effect tube.
The embodiment of the invention also provides a kind of control systems, including AC power source, AC servo motor and motor control
Circuit processed, wherein the circuit for controlling motor includes:
Rectification unit, the first rectification subelement and the second commutator being connect respectively with the AC power source including input terminal
Unit；
Inversion unit, the first inversion connecting respectively with the output end of the first rectification subelement including input terminal are single
Member and the second inversion subelement, wherein the control of the output end of the first inversion subelement and the AC servo motor around
Group connection, the output end of the second inversion subelement are connect with the excitation winding of the AC servo motor；
Driving unit, the first driving connecting respectively with the output end of the second rectification subelement including power end are single
Member and the second driving subelement, wherein the control of the output end and the first inversion subelement of the first driving subelement
The output end of end connection, the second driving subelement is connect with the control terminal of the second inversion subelement；
Control unit, the input terminal and described second that the output end of the control unit drives subelement with described first respectively
The input terminal connection of subelement is driven, to control the first inversion subelement and the second inversion subelement respectively to described
Control winding and the excitation winding export two groups of AC sinusoidal voltages that amplitude is identical, frequency is identical, phase difference is 90 °.
Circuit for controlling motor provided by the invention and control system, by rectification unit, inversion unit, driving unit and
Control unit is equipped with, and can be distinguished based on control winding from same AC power source to AC servo motor and excitation winding
Two groups of AC sinusoidal voltages are exported, and the amplitude of two groups of AC sinusoidal voltages is identical, frequency is identical, phase difference is 90 °, in turn
Guarantee that control winding and excitation winding generate circular rotating field in air gap, to improve in the prior art to AC servo motor
Control effect difference problem, and reduce the power consumption of AC servo motor.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
Fig. 1 is the structural block diagram of control system provided in an embodiment of the present invention.
Fig. 2 is the structural block diagram of circuit for controlling motor provided in an embodiment of the present invention.
Fig. 3 is another structural block diagram of circuit for controlling motor provided in an embodiment of the present invention.
Fig. 4 is the circuit diagram of the first inversion subelement provided in an embodiment of the present invention.
Fig. 5 is another circuit diagram of the first inversion subelement provided in an embodiment of the present invention.
Fig. 6 is another circuit diagram of the first inversion subelement provided in an embodiment of the present invention.
Fig. 7 is the circuit diagram of the first driving subelement provided in an embodiment of the present invention.
Icon: 10- control system；100- circuit for controlling motor；110- rectification unit；111- first rectifies subelement；
113- second rectifies subelement；130- inversion unit；131- the first inversion subelement；The first field-effect tube of Q11-；Q12- second
Field-effect tube；Q13- third field-effect tube；The 4th field-effect tube of Q14-；The first discharge resistance of R11-；The second discharge resistance of R12-；
R13- third discharge resistance；The 4th discharge resistance of R14-；D1- first diode；The second diode of D2-；The first triode of Q21-；
The second triode of Q22-；The first divider resistance of R21-；The second divider resistance of R22-；D3- third diode；The 4th diode of D4-；
R23- third divider resistance；The 4th divider resistance of R24-；The 5th divider resistance of R25-；The 6th divider resistance of R26-；Q23- third
Triode；C- electric capacity of voltage regulation；133- the second inversion subelement；150- driving unit；151- first drives subelement；Q15- the 5th
Field-effect tube；The 6th field-effect tube of Q16-；The 7th field-effect tube of Q17-；R30- pull-up resistor；153- second drives subelement；
170- control unit；200- AC power source；300- AC servo motor.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment only
It is a part of the embodiments of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings
The component of embodiment can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.In description of the invention
In, term " first ", " second ", " third ", " the 4th " etc. are only used for distinguishing description, and should not be understood as only or imply opposite
Importance.
In the description of the present invention unless specifically defined or limited otherwise, term " setting ", " connected ", " connection " are answered
It is interpreted broadly, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The connection in portion.For the ordinary skill in the art, the tool of above-mentioned term in the present invention can be understood with concrete condition
Body meaning.
As shown in Figure 1, the embodiment of the invention provides a kind of control system 10, including circuit for controlling motor 100, alternating current
Source 200 and AC servo motor 300.
Wherein, the AC servo motor 300 includes control winding and excitation winding, and passes through the motor control respectively
Circuit 100 is connect with the AC power source 200, with the alternating current work exported by the AC power source 200.
Optionally, the voltage value of the AC power source 200 is unrestricted, can be selected according to actual needs, for example,
It can be 220V.The type of the AC servo motor 300 is unrestricted, can be selected according to practical application request, example
Such as, either asynchronous type, is also possible to synchronized model.
In conjunction with Fig. 2, the embodiment of the present invention also provides a kind of circuit for controlling motor that can be applied to above-mentioned control system 10
100.Wherein, the circuit for controlling motor 100 may include rectification unit 110, inversion unit 130, driving unit 150 and control
Unit 170 processed.
The rectification unit 110 is connect with the AC power source 200, to obtain the electric energy that the AC power source 200 exports
And carry out rectification processing.The inversion unit 130 is separately connected with the rectification unit 110 and the driving unit 150, described
Driving unit 150 is connect with described control unit 170, so that control of the driving unit 150 according to described control unit 170
Signal drives the inversion unit 130 to carry out inversion processing to the direct current that the rectification unit 110 exports, to obtain alternating current
And it exports to the AC servo motor 300.
In conjunction with Fig. 3, in the present embodiment, the rectification unit 110 includes what input terminal was connect with AC power source 200 respectively
First rectification subelement 111 and the second rectification subelement 113.The inversion unit 130 includes input terminal respectively with described first
Rectify the first inversion subelement 131 and the second inversion subelement 133 of the output end connection of subelement 111, wherein described first
The output end of inversion subelement 131 is connect with the control winding of AC servo motor 300, the second inversion subelement 133
Output end is connect with the excitation winding of the AC servo motor 300.The driving unit 150 include power end respectively with it is described
First driving subelement 151 of the output end connection of the second rectification subelement 113 and the second driving subelement 153, wherein described
The output end of first driving subelement 151 is connect with the control terminal of the first inversion subelement 131, and the second driving is single
The output end of member 153 is connect with the control terminal of the second inversion subelement 133.The output end of described control unit 170 is distinguished
It is connect with the input terminal of the input terminal of the first driving subelement 151 and the second driving subelement 153, described in control
First inversion subelement 131 and the second inversion subelement 133 are exported to the control winding and the excitation winding respectively
The AC sinusoidal voltage that two groups amplitude is identical, frequency is identical, phase difference is 90 °.
Optionally, the number for the electrical component that the first rectification subelement 111 and the second rectification subelement 113 include
Amount is unrestricted with type, can be selected according to practical application request, for example, in the first rectification 111 He of subelement
It may include transformer when the second rectification subelement 113 carries out voltage conversion treatment.
Also, the amplitude of the voltage of two rectification subelement output is unrestricted, either it is identical, it is also possible to not
With.In the present embodiment, the voltage that the first rectification subelement 111 exports can be 220V, the second commutator list
The voltage of 113 output of member can be 12V.
Optionally, the number for the electrical component that the first inversion subelement 131 and the second inversion subelement 133 include
Amount is unrestricted with type, can be selected according to practical application request.In the present embodiment, it is contemplated that first inversion
Subelement 131 and the second inversion subelement 133 need to export two groups respectively, and amplitude is identical, frequency is identical, phase difference is 90 °
AC sinusoidal voltage, the class for the electrical component that the first inversion subelement 131 includes with the second inversion subelement 133
Type and quantity can be identical.In conjunction with Fig. 4, it is illustrated by taking the first inversion subelement 131 as an example below.
The first inversion subelement 131 may include the first field-effect tube Q11, the second field-effect tube Q12, third field effect
It should pipe Q13 and the 4th field-effect tube Q14.Wherein, the control terminal of the first field-effect tube Q11 and the first driving are single
The output end connection of member 151.The output end of the control terminal of the second field-effect tube Q12 and the first driving subelement 151
Connection, hot end connect with the cold end of the first field-effect tube Q11 after as the first inversion subelement 131
First output end connect with the first end of the control winding, cold end and ground connection.The control of the third field-effect tube Q13
End with it is described first drive subelement 151 output end connect, the hot end of hot end and the first field-effect tube Q11
It is connect as the input terminal of the first inversion subelement 131 with the output end of the first rectification subelement 111 after connection.Institute
The output end of the control terminal and the first driving subelement 151 of stating the 4th field-effect tube Q14 connect, hot end and described the
Second output terminal and the control after the cold end connection of three field-effect tube Q13 as the first inversion subelement 131
The second end connection of winding, cold end ground connection.
By above-mentioned setting, may be implemented: the first field-effect tube Q11 and the 4th field-effect tube Q14 synchronize lead
Logical and shutdown, the second field-effect tube Q12 and the synchronous conducting of the third field-effect tube Q13 and shutdown, and described first
When the conducting of field-effect tube Q11 and the 4th field-effect tube Q14, the second field-effect tube Q12 and the third field-effect
Pipe Q13 shutdown is exported direct current conversion for alternating current with realizing.
Further, it is contemplated that the first field-effect tube Q11, the second field-effect tube Q12, third field-effect tube Q13 with
And the 4th field-effect tube Q14 need frequent conducting and shutdown, the first field-effect tube Q11, the second field-effect tube Q12,
The control terminal of third field-effect tube Q13 and the 4th field-effect tube Q14 will form discharge current, to avoid the discharge current from influencing
The work of first driving subelement 151, in the present embodiment, the first inversion subelement 131 can also include the first electric discharge
Resistance R11, the second discharge resistance R12, third discharge resistance R13 and the 4th discharge resistance R14.
Wherein, one end of the first discharge resistance R11 connect with the control terminal of the first field-effect tube Q11, is another
End is connect with the cold end of the first field-effect tube Q11.One end of the second discharge resistance R12 and described second effect
Should pipe Q12 control terminal connection, the other end connect with the cold end of the second field-effect tube Q12.The third electric discharge electricity
One end of resistance R13 is connect with the control terminal of the third field-effect tube Q13, the other end is low with the third field-effect tube Q13's
Potential end connection.One end of the 4th discharge resistance R14 connect with the control terminal of the 4th field-effect tube Q14, the other end
It is connect with the cold end of the 4th field-effect tube Q14.
Further, it is contemplated that if in the first field-effect tube Q11, the second field-effect tube Q12, third field-effect tube
When the conducting of Q13 or the 4th field-effect tube Q14, the electric current flowed through crosses senior general and damages corresponding field-effect tube, in the present embodiment,
It may be provided for the first field-effect tube Q11, the second field-effect tube Q12, third field-effect tube Q13 or the 4th effect
Should pipe Q14 carry out overcurrent protection electrical component.In conjunction with Fig. 5, it is illustrated by taking the first field-effect tube Q11 as an example below.
The first inversion subelement 131 can also include first diode D1, the second diode D2, the first triode
Q21, the second triode Q22, the first divider resistance R21 and the second divider resistance R22, to realize in first field-effect tube
The first field-effect tube Q11 is turned off when Q11 overcurrent.
Wherein, the cathode of the first diode D1 is connect with the hot end of the first field-effect tube Q11, and described
Two diode D2 are zener diode, and cathode is connect with the anode of the first diode D1, the first triode Q21's
Control terminal is connect with the anode of the second diode D2, hot end is connect with the control terminal of the first field-effect tube Q11,
The hot end of the second triode Q22 is connect with the cold end of the first triode Q21, cold end is grounded, institute
The one end for stating the first divider resistance R21 connect with the control terminal of the first field-effect tube Q11, the other end and the two or three pole
The control terminal of pipe Q22 connects, and one end of the second divider resistance R22 connect with the control terminal of the second triode Q22, is another
One end ground connection.
By above-mentioned setting, may be implemented: when the first field-effect tube Q11 overcurrent, the voltage of hot end can be raised
And then the second diode D2 is caused to be reversed breakdown, so that the voltage of hot end is applied to the first triode Q21
Control terminal so that the hot end of the first triode Q21 is connected with cold end, and then the by being connected and being grounded
Two triode Q22 drag down the voltage of the control terminal of the first field-effect tube Q11, so that the first field-effect tube Q11 is turned off.
Further, to avoid the first field-effect tube Q11 when off, the second diode D2 is by described first
The high voltage reverse breakdown that subelement 111 exports is rectified, in the present embodiment, in conjunction with Fig. 6, the first inversion subelement 131
It can also include third diode D3, the 4th diode D4, third divider resistance R23, the 4th divider resistance R24, the 5th partial pressure
Resistance R25, the 6th divider resistance R26, third transistor Q23 and electric capacity of voltage regulation C.
Wherein, the 4th diode D4 is zener diode.The anode of the third diode D3 with described first
The hot end connection of effect pipe Q11, cathode are connect with one end of the third divider resistance R23, the third divider resistance
The other end of R23 is connect with one end of the 4th divider resistance R24, the other end of the 4th divider resistance R24 with it is described
One end of 5th divider resistance R25 connects, the cathode of the other end of the 5th divider resistance R25 and the second diode D2
Connection, the control terminal of the third transistor Q23 are connected to the third divider resistance R23 and the 4th divider resistance R24
Between, hot end is connect with the cathode of the second diode D2, cold end is connect by the 6th divider resistance R26
Ground, the cathode of the 4th diode D4 is connected between the 4th divider resistance R24 and the 5th divider resistance R25,
Plus earth, one end of the electric capacity of voltage regulation C be connected to the 4th divider resistance R24 and the 5th divider resistance R25 it
Between, the other end ground connection.
Pass through the third divider resistance R23, the 4th divider resistance R24, the partial pressure electricity of the 5th divider resistance R25 and the 6th
Resistance R26 carries out voltage division processing to the voltage that the first inversion subelement 131 exports, so that the first field-effect tube Q11 exists
When shutdown, the voltage of the second diode D2 is restricted to the voltage at the both ends the 6th divider resistance R26, and then avoids
The problem of second diode D2 described in when the first field-effect tube Q11 is turned off is reversed breakdown.
Optionally, the class for the electrical component that the first driving subelement 151 and the second driving subelement 153 include
Type and quantity are unrestricted, can be selected according to practical application request.In the present embodiment, it is contemplated that first driving
Subelement 151 is identical with quantity with the type for the electrical component that the second driving subelement 153 includes, below with described first
It is illustrated for driving subelement 151.
In conjunction with Fig. 7, in the present embodiment, the first driving subelement 151 may include four groups of drive modules, and power supply
End respectively with it is described second rectification subelement 113 output end connect, input terminal respectively with each output of described control unit 170
End connection, output end respectively with the first field-effect tube Q11, the second field-effect tube Q12, third field-effect tube Q13 and the
The control terminal of four field-effect tube Q14 connects, and controls corresponding the respectively with the control signal exported according to described control unit 170
One field-effect tube Q11, the second field-effect tube Q12, third field-effect tube Q13 and the 4th field-effect tube Q14.
Wherein, any one group of drive module may include the 5th field-effect tube Q15, the 6th field-effect tube Q16, the 7th effect
It should pipe Q17 and pull-up resistor R30.One output of the control terminal and described control unit 170 of the 5th field-effect tube Q15
End connection, cold end ground connection.The control terminal of the 6th field-effect tube Q16 and the high potential of the 5th field-effect tube Q15
End connection, hot end ground connection.The control terminal of the 7th field-effect tube Q17 and the high potential of the 5th field-effect tube Q15
End connects, hot end is connect as the power end of the drive module with the output end of the second rectification subelement 113, low electricity
It is imitated after being connect with the cold end of the 6th field-effect tube Q16 as the output end of the drive module and described first at position end
Should pipe Q11, the second field-effect tube Q12, third field-effect tube Q13 or the 4th field-effect tube Q14 control terminal connection.The pull-up
One end of resistance R30 connect with the hot end of the 7th field-effect tube Q17, the other end and the 5th field-effect tube Q15
Hot end connection.
Also, the polarity of the 6th field-effect tube Q16 and the 7th field-effect tube Q17 is on the contrary, be based on phase to realize
Same signal is respectively turned on and turns off, and then realizes the output of low and high level.
Further, it is produced between each unit to avoid the circuit for controlling motor 100 since circuit paths are longer
The problem of raw parasitic inductance, in the present embodiment, the inversion unit 130, driving unit 150 and control unit 170, are integrated
In same circuit board.
Wherein, each electrical component that the inversion unit 130, driving unit 150 and control unit 170 include can be with
It is grounded jointly after connection, to realize the simplified purpose of circuit structure.
Further, it is contemplated that the second field-effect tube Q12 and the 4th field-effect tube Q14 need continually to turn off
Biggish electric current will affect the reliable output of control signal, in this reality if the ground terminal of described control unit 170 is directly grounded
It applies in example, described control unit 170 may include processor and inductance.
Wherein, multiple output ends of the processor are connect with the input terminal of each drive module respectively, with to each driving mould
Block output control signal.One end of the inductance is connect with the ground terminal of the processor, the other end and second field-effect
It is grounded after the connection of the cold end of pipe Q12 and the 4th field-effect tube Q14.
In conclusion circuit for controlling motor 100 provided by the invention and control system 10, pass through rectification unit 110, inversion
Unit 130, driving unit 150 and control unit 170 are equipped with, and can be watched based on same AC power source 200 to exchange
The control winding and excitation winding for taking motor 300 export two groups of AC sinusoidal voltages respectively, and two groups of AC sinusoidal voltages
Amplitude is identical, frequency is identical, phase difference is 90 °, and then guarantees that control winding and excitation winding generate circular rotating in air gap
Magnetic field to improve in the prior art to the problem of the control effect difference of AC servo motor 300, and reduces AC servo motor
300 power consumption.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of circuit for controlling motor characterized by comprising
Rectification unit, the first rectification subelement being connect respectively with AC power source including input terminal and the second rectification subelement；
Inversion unit, including input terminal respectively with the first inversion subelement for connecting of output end of the first rectification subelement and
Second inversion subelement, wherein the output end of the first inversion subelement and the control winding of AC servo motor connect, institute
The output end for stating the second inversion subelement is connect with the excitation winding of the AC servo motor；
Driving unit, including power end respectively with it is described second rectification subelement output end connect first drive subelement and
Second driving subelement, wherein the output end of the first driving subelement and the control terminal of the first inversion subelement connect
It connects, the output end of the second driving subelement is connect with the control terminal of the second inversion subelement；
Control unit, input terminal and described second of the output end of the control unit respectively with the first driving subelement drive
The input terminal of subelement connects, to control the first inversion subelement and the second inversion subelement respectively to the control
Winding and the excitation winding export two groups of AC sinusoidal voltages that amplitude is identical, frequency is identical, phase difference is 90 °；
The first inversion subelement includes: the first field-effect that control terminal is connect with the output end of the first driving subelement
Pipe；The second field-effect tube that control terminal is connect with the output end of the first driving subelement, the height electricity of second field-effect tube
The first output end as the first inversion subelement and institute after position end is connect with the cold end of first field-effect tube
State first end connection, cold end and the ground connection of control winding；Control terminal is connect with the output end of the first driving subelement
Third field-effect tube, conduct after the hot end of the third field-effect tube is connect with the hot end of first field-effect tube
The input terminal of the first inversion subelement is connect with the output end of the first rectification subelement；Control terminal and described first is driven
4th field-effect tube of the output end connection of subunit, the hot end of the 4th field-effect tube and the third field-effect tube
Cold end connection after as the first inversion subelement second output terminal connect with the second end of the control winding,
Cold end ground connection；
The first inversion subelement further include: the first discharge resistance, one end of first discharge resistance and described first effect
Should pipe control terminal connection, the other end connect with the cold end of first field-effect tube；Second discharge resistance, this second is put
One end of resistance connect with the control terminal of second field-effect tube, the cold end of the other end and second field-effect tube
Connection；Third discharge resistance, one end of the third discharge resistance connect with the control terminal of the third field-effect tube, the other end with
The cold end of the third field-effect tube connects；4th discharge resistance, one end of the 4th discharge resistance with described 4th
The control terminal connection of effect pipe, the other end are connect with the cold end of the 4th field-effect tube；
The first inversion subelement further include: first diode, the cathode of the first diode and first field-effect tube
Hot end connection；Second diode, second diode are zener diode, and the sun of cathode and the first diode
Pole connection；First triode, the control terminal of first triode connect with the anode of second diode, hot end and institute
State the control terminal connection of the first field-effect tube；Second triode, the hot end of second triode and first triode
Cold end connection, cold end ground connection；First divider resistance, one end of first divider resistance and first field-effect
The control terminal connection of pipe, the other end are connect with the control terminal of second triode；Second divider resistance, second divider resistance
One end connect with the control terminal of second triode, the other end ground connection；
The first inversion subelement further include third diode, the 4th diode, third divider resistance, the 4th divider resistance,
5th divider resistance, the 6th divider resistance, third transistor and electric capacity of voltage regulation, wherein the 4th diode is two pole of pressure stabilizing
Pipe；The anode of the third diode is connect with the hot end of first field-effect tube, cathode and third partial pressure are electric
One end of resistance connects, and the other end of the third divider resistance is connect with one end of the 4th divider resistance, and described 4th point
The other end of piezoresistance is connect with one end of the 5th divider resistance, the other end and described second of the 5th divider resistance
The cathode of diode connects, and the control terminal of the third transistor is connected to the third divider resistance and the 4th partial pressure electricity
Between resistance, hot end is connect with the cathode of second diode, cold end is grounded by the 6th divider resistance, institute
The cathode for stating the 4th diode is connected between the 4th divider resistance and the 5th divider resistance, plus earth, described
One end of electric capacity of voltage regulation is connected between the 4th divider resistance and the 5th divider resistance, the other end is grounded.
2. circuit for controlling motor according to claim 1, which is characterized in that the first driving subelement includes four groups of drives
Dynamic model block, and power end respectively with it is described second rectification subelement output end connect, input terminal respectively with described control unit
Each output end connection, output end respectively with first field-effect tube, the second field-effect tube, third field-effect tube and the 4th
The control terminal of field-effect tube connects, and controls corresponding first field-effect respectively with the control signal exported according to described control unit
Pipe, the second field-effect tube, third field-effect tube and the 4th field-effect tube.
3. circuit for controlling motor according to claim 2, which is characterized in that any one group of drive module include:
5th field-effect tube, the control terminal and the output end connection of described control unit, low potential of the 5th field-effect tube
End ground connection；
6th field-effect tube, the control terminal of the 6th field-effect tube connect with the hot end of the 5th field-effect tube, are high electric
Position end ground connection；
7th field-effect tube, the control terminal of the 7th field-effect tube connect with the hot end of the 5th field-effect tube, are high electric
Position end as the drive module power end with it is described second rectify subelement output end connect, cold end and the described 6th
Output end and first field-effect tube, the second field-effect after the cold end connection of field-effect tube as the drive module
The control terminal connection of pipe, third field-effect tube or the 4th field-effect tube；
Pull-up resistor, one end of the pull-up resistor connect with the hot end of the 7th field-effect tube, the other end and described the
The hot end of five field-effect tube connects；
Wherein, the polarity of the 6th field-effect tube and the 7th field-effect tube is opposite.
4. circuit for controlling motor according to claim 3, which is characterized in that the inversion unit, driving unit and control
Unit processed is integrated in same circuit board.
5. circuit for controlling motor according to claim 4, which is characterized in that described control unit includes:
Multiple output ends of processor, the processor are connect with the input terminal of each drive module respectively, with defeated to each drive module
Signal is controlled out；
Inductance, one end of the inductance are connect with the ground terminal of the processor, the other end and second field-effect tube and the 4th
It is grounded after the cold end connection of field-effect tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810157594.5A CN108173467B (en) | 2018-02-24 | 2018-02-24 | Circuit for controlling motor and control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810157594.5A CN108173467B (en) | 2018-02-24 | 2018-02-24 | Circuit for controlling motor and control system |
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| CN108173467A CN108173467A (en) | 2018-06-15 |
| CN108173467B true CN108173467B (en) | 2019-10-08 |
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| CN101534110A (en) * | 2009-04-10 | 2009-09-16 | 深圳市科陆变频器有限公司 | IGBT current-limiting drive circuit |
| CN202182129U (en) * | 2011-08-22 | 2012-04-04 | 无锡艾柯威科技有限公司 | Drive circuit of clutch |
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| CN104868457A (en) * | 2014-12-24 | 2015-08-26 | 万洲电气股份有限公司 | IGBT overvoltage protective circuit capable of large-power energy discharge |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6831442B2 (en) * | 2002-07-03 | 2004-12-14 | General Motors Corporation | Utilizing zero-sequence switchings for reversible converters |
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2018
- 2018-02-24 CN CN201810157594.5A patent/CN108173467B/en not_active Expired - Fee Related
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|---|---|---|---|---|
| CN101534110A (en) * | 2009-04-10 | 2009-09-16 | 深圳市科陆变频器有限公司 | IGBT current-limiting drive circuit |
| CN202182129U (en) * | 2011-08-22 | 2012-04-04 | 无锡艾柯威科技有限公司 | Drive circuit of clutch |
| CN102780443A (en) * | 2012-08-14 | 2012-11-14 | 西北工业大学 | Aerial three-level electric excitation motor starting control method and aerial three-level electric excitation motor starting control device |
| CN104868457A (en) * | 2014-12-24 | 2015-08-26 | 万洲电气股份有限公司 | IGBT overvoltage protective circuit capable of large-power energy discharge |
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