CN106899241A - A kind of brushless dual-feed motor starts control device and method - Google Patents
A kind of brushless dual-feed motor starts control device and method Download PDFInfo
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- CN106899241A CN106899241A CN201710291501.3A CN201710291501A CN106899241A CN 106899241 A CN106899241 A CN 106899241A CN 201710291501 A CN201710291501 A CN 201710291501A CN 106899241 A CN106899241 A CN 106899241A
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000004804 winding Methods 0.000 claims abstract description 76
- 238000012546 transfer Methods 0.000 claims abstract description 20
- 238000001514 detection method Methods 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 abstract description 6
- 230000005284 excitation Effects 0.000 abstract description 3
- 230000007812 deficiency Effects 0.000 abstract 1
- 238000012935 Averaging Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Classifications
-
- 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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/20—Arrangements for starting
-
- 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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/005—Arrangements for controlling doubly fed motors
Abstract
Brushless dual-feed motor of the present invention starts control device, including brushless dual-feed motor, three-phase fully-controlled type power network side converter, three-phase fully-controlled type motor side converter, first and second AC power, DC transfer circuit, switching switch, power winding controlling switch and system control unit, wherein three-phase fully-controlled type power network side converter, three-phase fully-controlled type motor side converter, DC transfer circuit, switching switch and power winding controlling switch is connected with system control unit respectively.Present invention also offers the method and step for starting control.Its advantage is to improve startup control structure, power winding connects DC excitation, controling winding connects three-phase fully-controlled type motor side converter, because stator winding resistance is small, DC transfer circuit output voltage is relatively low, and its capacity also can be smaller, and motor is equivalent in start-up course to become the synchronous motor that power winding and controling winding are exchanged, staring torque deficiency problem during conventional synchronization starts is solved, the high-performance for realizing brushless dual-feed motor starts.
Description
Technical field
The present invention relates to motor speed regulation system field, and in particular to a kind of brushless dual-feed motor starts control device and side
Method.
Background technology
Brushless dual-feed motor is a kind of New-type electric machine.Brushless dual-feed motor is by power winding, controling winding and special sets
The rotor of meter realizes brushless structure.Current brushless double-fed motor Starting mode can be divided into synchronous averaging and asynchronous starting,
Traditional synchronous averaging be in two sets of stator winding of brushless double-fed motor simultaneously plus driving source, this require the capacity of current transformer with
The capacity of brushless dual-feed motor is consistent, and this only can be disagreed with brushless double-fed motor using the original intention of converter part capacity
The back of the body.For this problem, patent document (ZL201511015056.5) is by by all of power device of controling winding current transformer
Disconnect, and by braking resistor access power controling winding loop, although this method is using frequency converter own resources, realize
The function of brushless dual-feed motor start-up course current limliting and reach reduction equipment volume effect, but this method exist it is following not
Foot：(1) when the motor is energized between it is long when, current-limiting resistance heating is serious, influences system reliably working；(2) when electric motor starting is negative
When carrying larger, it may appear that the situation of electric motor starting failure.Patent document (ZL201511015056.5) is by power of motor winding
On the basis of short circuit, by the amplitude and frequency of regulation motor side converter output voltage, the startup of motor is realized.This method according to
Cannot so avoid when electric motor starting load is larger, it may appear that the situation of electric motor starting failure.
The content of the invention
In view of the defect of above-mentioned prior art, control dress is started it is an object of the invention to provide a kind of brushless dual-feed motor
Control method is put and its started, DC excitation is connect using power winding, controling winding connects three-phase fully-controlled type motor side converter, can
So that the synchronization that brushless dual-feed motor is equivalent to a power winding and controling winding exchange by motor in start-up course is electronic
Machine, so as to solve the problems, such as that staring torque is not enough in traditional synchronous averaging method.
It is that, up to above-mentioned purpose, a kind of brushless dual-feed motor of the invention starts control device, including brushless dual-feed motor, three-phase
Full-control type power network side converter, three-phase fully-controlled type motor side converter and first and second AC power, also including DC converting electricity
Road, switching switch, power winding controlling switch and system control unit, wherein three-phase fully-controlled type grid side AC side of converter
Connect with the first AC power successively split-phase, DC side and the three-phase fully-controlled type motor side unsteady flow of three-phase fully-controlled type power network side converter
The DC side of device is connected by dc bus, and dc-link capacitance is parallel with dc bus；The input side of DC transfer circuit
In parallel with dc-link capacitance, the outlet side of DC transfer circuit switchs the power winding phase with brushless dual-feed motor by switching
Even, wherein switching second input and the 3rd input short circuit of switch；First AC power is through overpower winding controlling switch
It is connected with the power winding of brushless dual-feed motor；It is three-phase fully-controlled type power network side converter, three-phase fully-controlled type motor side converter, straight
Stream translation circuit, switching switch and power winding controlling switch are connected with system control unit respectively, system control unit output
The clock signal of device for power switching conducting, the control that system control unit is performed in control three-phase fully-controlled type motor side converter
Sequence includes：
Step 1：System control unit is initialized, and disconnects switching switch and power winding controlling switch；
Step 2：Start three-phase fully-controlled type power network side converter, reach three-phase fully-controlled type power network side converter output voltage
Rated value；
Step 3：After closure switching switch, DC transfer circuit output voltage is controlled, the electric current of power winding is progressively reached
To preset value；
Step 4：System control unit sends instruction, and each switching device is logical in control three-phase fully-controlled type motor side converter
It is disconnected, the rotating speed of brushless dual-feed motor is increased；
Step 5：Judge that whether the rotating speed of brushless dual-feed motor, close to rated speed, if it is, disconnecting switching switch, is performed
Next step；If not, returning to previous step；
Step 6：The output current of three-phase fully-controlled type motor side converter is adjusted, makes the phase and width of power winding terminal voltage
Phase and amplitude of the value respectively with the first AC power reaches unanimity；
Step 7：Closed power winding controlling switch, completes start-up course, and system control unit controls each power switch device
The on off state of part, brushless dual-feed motor enters normal operating condition.
Brushless dual-feed motor of the present invention starts control device, wherein the step 2 is using double based on instantaneous power theory
Ring control algolithm, makes power network side converter output voltage reach rated value.
Brushless dual-feed motor of the present invention starts control device, wherein system control unit detection is brushless double in the step 4
The electric current of generating aid controling winding, the phase of power winding terminal voltage, the phase of amplitude and the second AC supply voltage, amplitude,
Using space vector modulation algorithm, by the way that the amplitude and frequency of controling winding current reference vector is altered in steps, control three-phase is complete
Device for power switching switching signal in control type motor side converter, steps up the rotating speed of brushless dual-feed motor.
Brushless dual-feed motor of the present invention starts control device, wherein first AC power is phase with the second AC power
Same AC power.
Brushless dual-feed motor of the present invention starts control device, wherein first AC power is not with the second AC power
Identical AC power.
It is, up to above-mentioned purpose, control method to be started the invention provides a kind of brushless dual-feed motor, the method sets brushless
Double feedback electric engine, three-phase fully-controlled type power network side converter, three-phase fully-controlled type motor side converter, DC transfer circuit, switching switch,
Power winding controlling switch and system control unit, the method are comprised the following steps：
Step 1：System control unit is initialized, and disconnects switching switch and power winding controlling switch；
Step 2：Start three-phase fully-controlled type power network side converter, power network side converter output voltage is reached rated value；
Step 3：After closure switching switch, DC transfer circuit output voltage is controlled, the electric current of power winding is progressively reached
To preset value；
Step 4：System control unit sends instruction, each device for power switching in control three-phase fully-controlled type motor side converter
Break-make, the rotating speed of brushless dual-feed motor is increased；
Step 5：Judge that whether the rotating speed of brushless dual-feed motor, close to rated speed, if it is, disconnecting switching switch, is performed
Next step；If not, returning to previous step；
Step 6：The output current of three-phase fully-controlled type motor side converter is adjusted, makes the phase and width of power winding terminal voltage
Phase and amplitude of the value respectively with the second AC power reaches unanimity；
Step 7：Closed power winding controlling switch, completes start-up course, and system control unit controls each power switch
On off state, brushless dual-feed motor enters normal operating condition.
Brushless dual-feed motor of the present invention starts control method, wherein the step 2 is using double based on instantaneous power theory
Ring control algolithm, makes power network side converter output voltage reach rated value.
Brushless dual-feed motor of the present invention starts control method, wherein system control unit detection is brushless double in the step 4
The electric current of generating aid controling winding, the phase of power winding terminal voltage, the phase of amplitude and the second AC supply voltage, amplitude,
Using space vector modulation algorithm, by the way that the amplitude and frequency of controling winding current reference vector is altered in steps, control three-phase is complete
Device for power switching switching signal in control type motor side converter, steps up the rotating speed of brushless dual-feed motor.
Brushless dual-feed motor of the present invention starts control method, wherein first AC power is phase with the second AC power
Same AC power.
Brushless dual-feed motor of the present invention starts control method, wherein first AC power is not with the second AC power
Identical AC power.
The advantage and good effect that brushless dual-feed motor of the present invention starts control device and method be：It is brushless double by improving
Generating aid control structure, DC excitation is connect by power winding, and controling winding connects three-phase fully-controlled type motor side converter, due to stator
Winding resistance is small, and DC transfer circuit output voltage can be with relatively low, and its capacity also can be smaller, and brushless dual-feed motor is in start-up course
In it is equivalent become the synchronous motor that a power winding and controling winding are exchanged, so as to solve traditional synchronous averaging method
The not enough problem of middle staring torque, the high-performance for realizing brushless dual-feed motor starts.
Brief description of the drawings
Fig. 1 is the circuit structure diagram that brushless dual-feed motor of the present invention starts control device；
Fig. 2 is the control flow chart that brushless dual-feed motor of the present invention starts control method.
Specific embodiment
To make the purpose of the present invention, technical scheme and effect clearer, clear and definite, with reference to referring to the drawings to the present invention
Further describe the embodiment that brushless dual-feed motor of the present invention starts control device and method.It should be appreciated that this place is retouched
The specific embodiment stated only is used to explain the present invention, is not intended to limit the present invention.
Reference picture 1, brushless dual-feed motor of the present invention starts control device includes brushless dual-feed motor 7, three-phase fully-controlled type electricity
Net side current transformer 3, three-phase fully-controlled type motor side converter 4, first and second AC power 1,2, DC transfer circuit 5, switching switch
K1, power winding controlling switch K2 and system control unit 6.The wherein AC of three-phase fully-controlled type power network side converter 3 and
The split-phase connection successively of one AC power 1, DC side and the three-phase fully-controlled type motor side unsteady flow of three-phase fully-controlled type power network side converter 3
The DC side of device 4 is connected by dc bus, and dc-link capacitance C is parallel with dc bus.
The input side of DC transfer circuit 5 is in parallel with dc-link capacitance C, and the outlet side of DC transfer circuit 5 is by cutting
Change switch K1 to be connected with the power winding of brushless dual-feed motor 7, wherein second input and the 3rd input of switching switch K1
Short circuit；Second AC power 2 is connected through overpower winding controlling switch K2 with the power winding of brushless dual-feed motor 7.
Three-phase fully-controlled type power network side converter 3, three-phase fully-controlled type motor side converter 4, DC transfer circuit 5, switching are opened
K1 and power winding controlling switch K2 is closed to be connected with system control unit 6 respectively.The output control three-phase fully-controlled of system control unit 6
The clock signal of device for power switching conducting, reference picture 2, the control sequence that system control unit 6 is performed in type motor side converter 4
Row include：
Step 1：System control unit 6 is initialized, and disconnects switching switch K1 and power winding controlling switch K2；
Step 2：Start three-phase fully-controlled type power network side converter 3, using the double -loop control algorithm based on instantaneous power theory,
The output voltage of three-phase fully-controlled type power network side converter 3 is set to reach rated value；
Step 3：After closure switching switch K1, the output voltage of DC transfer circuit 5 is controlled, make the electric current of power winding progressively
Reach preset value；
Step 4：System control unit sends instruction, each device for power switching in control three-phase fully-controlled type motor side converter
The break-make of S7-S12, rises the rotating speed of brushless dual-feed motor 7；
Specific method is the electric current that system control unit 6 detects the controling winding of brushless dual-feed motor 7, power winding terminal voltage
Phase, amplitude and the voltage of the second AC power 2 phase, amplitude, using space vector modulation algorithm, by the way that control is altered in steps
The amplitude and frequency of winding current reference vector processed, each device for power switching S7- in control three-phase fully-controlled type motor side converter 4
The switching signal of S12, steps up the rotating speed of brushless dual-feed motor.
Step 5：The rotating speed that system control unit 6 passes through encoder real-time detection brushless dual-feed motor 7, judges brushless double feed
Whether the rotating speed of motor 7 if it is, disconnect switching switch K1, performs next step close to rated speed；If not, on returning
One step；
Step 6：The output current of regulation three-phase fully-controlled type motor side converter 4, make the phase of power winding terminal voltage and
Phase and amplitude of the amplitude respectively with the second AC power 2 reaches unanimity；
Step 7：Closed power winding controlling switch K2, completes start-up course, and system control unit 6 controls each power switch
The on off state of device S1-S12, brushless dual-feed motor 7 enters normal operating condition.
The brushless dual-feed motor that the present invention is provided starts control method step, the control sequence performed with system control unit 6
Row are consistent.
In brushless dual-feed motor of the present invention starts control device and method, the first AC power 1 and the second AC power 2
It can be identical AC power, or the AC power for differing.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to structure of the invention
Think and scope is defined.On the premise of design concept of the present invention is not departed from, this area ordinary person is to technology of the invention
The all variations and modifications that scheme is made, all should drop into protection scope of the present invention, claimed technology contents of the invention,
All record in detail in the claims.
Claims (10)
1. a kind of brushless dual-feed motor starts control device, including brushless dual-feed motor (7), three-phase fully-controlled type power network side converter
(3), three-phase fully-controlled type motor side converter (4) and first and second AC power (1,2), it is characterised in that：Also include DC converting
Circuit (5), switching switch (K1), power winding controlling switch (K2) and system control unit (6), wherein：
Three-phase fully-controlled type power network side converter (3) AC connects with first AC power (1) successively split-phase, and described three
The DC side of phase full-control type power network side converter (3) passes through straight with the DC side of the three-phase fully-controlled type motor side converter (4)
Stream bus is connected, and dc-link capacitance (C) is parallel with the dc bus；
The input side of the DC transfer circuit (5) is in parallel with the dc-link capacitance (C), the DC transfer circuit (5)
Outlet side by it is described switching switch (K1) be connected with the power winding of the brushless dual-feed motor (7), wherein the switching
Switch second input and the 3rd input short circuit of (K1)；Second AC power (2) is through overpower winding controlling switch
(K2) the power winding with the brushless dual-feed motor (7) is connected；
The three-phase fully-controlled type power network side converter (3), three-phase fully-controlled type motor side converter (4), DC transfer circuit (5),
Switching switch (K1) and power winding controlling switch (K2) are connected with the system control unit (6) respectively, the system control
The clock signal of device for power switching conducting, described in three-phase fully-controlled type motor side converter (4) described in unit (6) output control
The control sequence that system control unit (6) is performed includes：
Step 1：System control unit (6) is initialized, and disconnects switching switch (K1) and power winding controlling switch (K2)；
Step 2：Start three-phase fully-controlled type power network side converter (3), reach three-phase fully-controlled type power network side converter (3) output voltage
To rated value；
Step 3：After closure switching switch (K1), DC transfer circuit (5) output voltage is controlled, make the electric current of power winding progressively
Reach preset value；
Step 4：System control unit (6) sends instruction, each power switch device in control three-phase fully-controlled type motor side converter (4)
The break-make of part (S7-S12), rises the rotating speed of brushless dual-feed motor (7)；
Step 5：Whether the rotating speed of brushless dual-feed motor (7) is judged close to rated speed, if it is, switching switch (K1) is disconnected,
Perform next step；If not, returning to previous step；
Step 6：The output current of regulation three-phase fully-controlled type motor side converter (4), makes the phase and width of power winding terminal voltage
Phase and amplitude of the value respectively with the second AC power (2) reaches unanimity；
Step 7：Closed power winding controlling switch (K2), completes start-up course, and system control unit (6) controls each power switch
The on off state of device (S1-S12), brushless dual-feed motor (7) enters normal operating condition.
2. the startup control device of brushless dual-feed motor according to claim 1, it is characterised in that：Wherein described step 2
Using the double -loop control algorithm based on instantaneous power theory, three-phase fully-controlled type power network side converter (3) output voltage is set to reach volume
Definite value.
3. the startup control device of brushless dual-feed motor according to claim 1 and 2, it is characterised in that：Wherein described step
The electric currents of rapid 4 detection brushless dual-feed motor (7) controling winding, the phase of power winding terminal voltage, amplitude and the second AC power
(2) phase of voltage, amplitude, using space vector modulation algorithm, by the width that controling winding current reference vector is altered in steps
Value and frequency, each device for power switching (S7-S12) switching signal is adjusted in control three-phase fully-controlled type motor side converter (4)
The output current of three-phase fully-controlled type motor side converter (4), makes the phase and amplitude of power winding terminal voltage be handed over second respectively
The phase and amplitude of stream power supply (2) reaches unanimity.
4. the startup control device of brushless dual-feed motor (7) according to claim 3, it is characterised in that：Wherein described
One AC power (1) and the second AC power (2) are identical AC power.
5. the startup control device of brushless dual-feed motor (7) according to claim 3, it is characterised in that：Wherein described
One AC power (1) and the second AC power (2) are the AC power for differing.
6. a kind of brushless dual-feed motor starts control method, it is characterised in that：The method sets brushless dual-feed motor (7), three-phase
Full-control type power network side converter (3), three-phase fully-controlled type motor side converter (4), DC transfer circuit (5), switching switch (K1),
Power winding controlling switch (K2) and system control unit (6), the method is comprised the following steps：
Step 1：System control unit (6) is initialized, and disconnects switching switch (K1) and power winding controlling switch (K2)；
Step 2：Start three-phase fully-controlled type power network side converter (3), reach three-phase fully-controlled type power network side converter (3) output voltage
To rated value；
Step 3：After closure switching switch (K1), DC transfer circuit (5) output voltage is controlled, make the electric current of power winding progressively
Reach preset value；
Step 4：System control unit (6) sends instruction, each power switch device in control three-phase fully-controlled type motor side converter (4)
The break-make of part (S7-S12), rises the rotating speed of brushless dual-feed motor (7)；
Step 5：Whether the rotating speed of brushless dual-feed motor (7) is judged close to rated speed, if it is, switching switch (K1) is disconnected,
Perform next step；If not, returning to previous step；
Step 6：The output current of regulation three-phase fully-controlled type motor side converter (4), makes the phase and width of power winding terminal voltage
Phase and amplitude of the value respectively with the second AC power (2) reaches unanimity；
Step 7：Closed power winding controlling switch (K2), completes start-up course, and system control unit (6) controls each power switch
The on off state of device (S1-S12), brushless dual-feed motor (7) enters normal operating condition.
7. the startup control method of brushless dual-feed motor according to claim 6, it is characterised in that：Wherein described step 2
Using the double -loop control algorithm based on instantaneous power theory, three-phase fully-controlled type power network side converter (3) output voltage is set to reach volume
Definite value.
8. the startup control method of the brushless dual-feed motor according to claim 6 or 7, it is characterised in that：Wherein described step
The electric currents of rapid 6 detection brushless dual-feed motor (7) controling winding, the phase of power winding terminal voltage, amplitude and the second AC power
(2) phase of voltage, amplitude, using space vector modulation algorithm, by the width that controling winding current reference vector is altered in steps
Value and frequency, each device for power switching (S7-S12) switching signal is adjusted in control three-phase fully-controlled type motor side converter (4)
The output current of three-phase fully-controlled type motor side converter (4), makes the phase and amplitude of power winding terminal voltage be handed over second respectively
The phase and amplitude of stream power supply (2) reaches unanimity.
9. the startup control method of brushless dual-feed motor according to claim 8, it is characterised in that：Wherein described first hands over
Stream power supply (1) and the second AC power (2) are identical AC power.
10. the startup control method of brushless dual-feed motor according to claim 8, it is characterised in that：Wherein described first
AC power (1) and the second AC power (2) are the AC power for differing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710291501.3A CN106899241B (en) | 2017-04-28 | 2017-04-28 | Brushless doubly-fed motor starting control device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710291501.3A CN106899241B (en) | 2017-04-28 | 2017-04-28 | Brushless doubly-fed motor starting control device and method |
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| CN106899241A true CN106899241A (en) | 2017-06-27 |
| CN106899241B CN106899241B (en) | 2023-09-26 |
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| CN201710291501.3A Active CN106899241B (en) | 2017-04-28 | 2017-04-28 | Brushless doubly-fed motor starting control device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111669000A (en) * | 2019-03-08 | 2020-09-15 | 美的威灵电机技术（上海）有限公司 | Control circuit of rotor, rotor assembly, motor and compressor |
| CN113236525A (en) * | 2021-06-11 | 2021-08-10 | 西安热工研究院有限公司 | Method for transforming steam-driven water feeding pump into double-fed motor driven water feeding pump and starting method |
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| CN111669000A (en) * | 2019-03-08 | 2020-09-15 | 美的威灵电机技术（上海）有限公司 | Control circuit of rotor, rotor assembly, motor and compressor |
| CN111669000B (en) * | 2019-03-08 | 2021-09-21 | 美的威灵电机技术（上海）有限公司 | Control circuit of rotor, rotor assembly, motor and compressor |
| CN113236525A (en) * | 2021-06-11 | 2021-08-10 | 西安热工研究院有限公司 | Method for transforming steam-driven water feeding pump into double-fed motor driven water feeding pump and starting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106899241B (en) | 2023-09-26 |
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