CN107659238A - A kind of Direct Torque Control device of switched reluctance machines - Google Patents
A kind of Direct Torque Control device of switched reluctance machines Download PDFInfo
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- CN107659238A CN107659238A CN201711114493.1A CN201711114493A CN107659238A CN 107659238 A CN107659238 A CN 107659238A CN 201711114493 A CN201711114493 A CN 201711114493A CN 107659238 A CN107659238 A CN 107659238A
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- torque
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- 238000004804 winding Methods 0.000 claims description 33
- 230000015654 memory Effects 0.000 claims description 9
- 230000033228 biological regulation Effects 0.000 claims description 2
- 230000010349 pulsation Effects 0.000 abstract description 4
- 230000004044 response Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
Classifications
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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
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/08—Reluctance motors
- H02P25/098—Arrangements for reducing torque ripple
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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
- H02P23/0004—Control strategies in general, e.g. linear type, e.g. P, PI, PID, using robust 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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/30—Direct torque control [DTC] or field acceleration method [FAM]
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention discloses a kind of Direct Torque Control device of switched reluctance machines, have and the torque reference amount Tcmd of speed pi regulator output is handled and PI torque controller, torque feedback module and execution module to switched reluctance machines output control signal.The Direct Torque Control device of the present invention can be to switched reluctance machines torque directly controlled, by the magnitude of current that is exported to torque controller progress Hysteresis control, improve the responding ability to direct torque, and torque pulsation can be reduced to a certain extent.
Description
Technical field
The present invention relates to the control technology field of switched reluctance machines, specifically a kind of switched reluctance machines it is direct
Torque control unit.
Background technology
Switched reluctance machines use speed control method, the direct output current specified rate of speed regulator, controller mostly
PI regulations are carried out to given value of current amount, to control average current, and then the average torque of indirect controlled motor, but this side
Formula is weaker to the control response of electric current, and the response to direct torque is also slow, is difficult to play switch magnetic to a certain extent
Hinder the performance of motor.
The content of the invention
The present invention is directed to above-mentioned state of the art, and provides a kind of Direct Torque Control device of switched reluctance machines,
Torque is directly controlled, hysteresis control is carried out by the magnitude of current exported to torque controller, improved to direct torque
Responding ability, and torque pulsation can be reduced to a certain extent.
Technical scheme is used by the present invention solves above-mentioned technical problem：A kind of Direct torque of switched reluctance machines
Device processed, have and the torque reference amount Tcmd of speed pi regulator output is handled and to switched reluctance machines output control
PI torque controller, torque feedback module and the execution module of signal.
Above-mentioned PI torque controller has the first port for the torque reference amount Tcmd for receiving the output of speed pi regulator,
And receive the torque feedback amount T_fb of torque feedback module output second port.PI torque controller is to torque reference amount
Tcmd and torque feedback amount T_fb difference are adjusted, and output current specified rate Icmd.
Above-mentioned torque feedback module has the 3rd port for receiving winding current feedback quantity Ifb, and in each position
Under, the moment coefficient memories of moment coefficient Kt lists is corresponded under every speed and under each electric current.Torque feedback module according to
Corresponding Kt values in the winding current feedback quantity Ifb values inquiry moment coefficient memory that 3rd port receives, it is anti-to calculate torque
Feedback amount T_fb and the second port for being sent to PI torque controller.
Above-mentioned torque feedback module has the computing module that feedback torque amount T_fb is calculated according to T_fb=Kt*Ifb.
Above-mentioned execution module has the 4th port for receiving winding current feedback quantity Ifb and receives given value of current amount Icmd
Fifth port, by the way that winding current feedback quantity Ifb is calculated compared with given value of current amount Icmd, control corresponding winding electricity
Flow the opening and closing of switching tube.
Above-mentioned execution module has in Ifb>Closing control phase winding switching tube during Icmd+ △ I1, work as Ifb<Icmd-
The comparison computing module of the phase winding switching tube is opened during △ I2, is compared corresponding to computing module to winding current switching tube output
Control signal.
Above-mentioned △ I1 and △ I2 is the hysteresis value set as needed.
Above-mentioned execution module has the hysteresis value that △ I1 and △ I2 lists are corresponded under various loads and current levels
Memory, execution module △ I1 and △ I2 hysteresis values according to corresponding to list query.
Above-mentioned switched reluctance machines are N phase switch reluctance motors, and wherein N is more than 2.
The present invention Direct Torque Control device can be to switched reluctance machines torque directly controlled, by turn
The magnitude of current of square adjuster output carries out Hysteresis control, improves the responding ability to direct torque, and can be to a certain degree
Upper reduction torque pulsation.
Brief description of the drawings
Fig. 1 is the control block diagram of invention device.
Fig. 2 is the block diagram of Direct Torque Control device.
Fig. 3 electric current hysteresis controlling curves.
Embodiment
Embodiments of the invention are described in further detail below in conjunction with accompanying drawing.
A kind of Direct Torque Control device of switched reluctance machines of the present invention, can enter to the torque of switched reluctance machines
Row directly controls, and carries out Hysteresis control by the magnitude of current exported to torque controller, improves the response energy to direct torque
Power, and torque pulsation can be reduced to a certain extent.
As shown in figure 1, the control of switched reluctance machines is mainly by speed pi regulator, Direct Torque Control device and switch
This several part of reluctance motor SRM are formed.Wherein Direct Torque Control device acts predominantly on three traditional rings or the control of two rings
Speed pi regulator output after.As shown in fig. 1, Vcmd is speed preset amount, and Vfb feeds back for motor actual speed
Amount, both difference admission velocity pi regulators are adjusted, speed pi regulator output torque specified rate Tcmd, Direct Torque
Control device receives the torque reference amount of speed pi regulator output, after treatment, direct controlling switch reluctance motor.
Direct Torque Control device as shown in Figure 2, mainly including PI torque controller, torque feedback module and execution mould
Block.
PI torque controller has the first port for the torque reference amount Tcmd for receiving the output of speed pi regulator, Yi Jijie
Receive the torque feedback amount T_fb of torque feedback module output second port.By torque reference amount Tcmd and torque feedback amount T_fb
Subtract each other, both differences are sent to PI torque controller and are adjusted, and output current specified rate Icmd.Given value of current amount Icmd
It is sent to execution module to be handled, and directly controls the on off state of the switching tube of each phase winding with the electricity of controlled motor winding
Stream.
Torque feedback module, it is that the feedback current of machine winding is converted into corresponding motor torque amount under this electric current.By
It is related to the inductance value under winding current, motor rotor position and current location in the torque of switching magnetic-resistance, it is one non-linear
Relation, therefore the moment coefficient Kt of switched reluctance machines is not a constant, but one with motor rotor position, winding
The variable of electric current and velocity correlation.
Torque feedback module has the 3rd port for receiving winding current feedback quantity Ifb.
In order to obtain the actual torque amount of current motor by current winding feedback electric current Ifb, it is necessary to establish one not
With under position, corresponding Kt forms under different rotating speeds and under different electric currents, torque feedback module also has under each position, is each
The moment coefficient memory of moment coefficient Kt lists is corresponded under individual rotating speed and under each electric current.Torque feedback module is according to the 3rd end
Corresponding Kt values in the winding current feedback quantity Ifb values inquiry moment coefficient memory that mouth receives, calculate torque feedback amount T_
Fb and the second port for being sent to PI torque controller.
Kt forms are the forms of a rotor-position, winding current and velocity correlation in the present invention, are obtaining machine winding
In the case of Ifb, by searching this form, Kt values corresponding to electric current are obtained.Torque feedback module has according to T_fb=Kt*
Ifb calculates feedback torque amount T_fb computing module, thus obtains torque feedback amount T_fb corresponding to the electric current.
Execution module has the 5th of the 4th port for receiving winding current feedback quantity Ifb and reception given value of current amount Icmd
Port, by the way that winding current feedback quantity Ifb is calculated compared with given value of current amount Icmd, control each phase winding current switch
The opening and closing of pipe.
As shown in figure 3, work as Ifb>During Icmd+ △ I1, the switching tube of the closing control phase winding, decline winding current；
Work as Ifb<During Icmd- △ I2, the switching tube for controlling the phase winding is opened, is that winding current rises.Wherein △ I1 and △ I2 are roots
The hysteresis value set according to needs, this value can be set as needed.△ I1 and △ I2 can also be built according to the change of load
The vertical form related to size of current, to obtain the corresponding different hysteresis values under different electric currents.Execution module has various
The hysteresis value memory of △ I1 and △ I2 lists is corresponded under load and current levels, described execution module is deposited according to hysteresis value
Reservoir.
Switched reluctance machines in the present invention, can be N phase switch reluctance motors, wherein N=2,3,4 ..., and its pole
Logarithm is respectively under the corresponding number of phases, all possible number of pole-pairs combines.
Highly preferred embodiment of the present invention has illustrated, and the various change or remodeling made by those of ordinary skill in the art are not
It can depart from the scope of the present invention.
Claims (9)
1. a kind of Direct Torque Control device of switched reluctance machines, it is characterized in that：With turning to speed pi regulator output
Square specified rate Tcmd is handled and the PI torque controller to switched reluctance machines output control signal, torque feedback module and
Execution module.
2. Direct Torque Control device according to claim 1, it is characterized in that：Described PI torque controller, which has, to be received
The torque reference amount Tcmd of speed pi regulator output first port, and receive the torque feedback of torque feedback module output
Measure T_fb second port；Described PI torque controller is carried out to torque reference amount Tcmd and torque feedback amount T_fb difference
Regulation, and output current specified rate Icmd.
3. Direct Torque Control device according to claim 2, it is characterized in that：Described torque feedback module, which has, to be received
Winding current feedback quantity Ifb the 3rd port, and torque system is corresponded under each position, under every speed and under each electric current
The moment coefficient memory of number Kt lists；The winding current feedback quantity that described torque feedback module receives according to the 3rd port
Corresponding Kt values in Ifb values inquiry moment coefficient memory, calculate torque feedback amount T_fb and are sent to PI torque controller
Second port.
4. Direct Torque Control device according to claim 3, it is characterized in that：Described torque feedback module has basis
T_fb=Kt*Ifb calculates feedback torque amount T_fb computing module.
5. Direct Torque Control device according to claim 4, it is characterized in that：Described execution module, which has, receives winding
Current feedback amount Ifb the 4th port and the fifth port for receiving given value of current amount Icmd, by by winding current feedback quantity Ifb
Calculated compared with given value of current amount Icmd, control the opening and closing of corresponding winding current switching tube.
6. Direct Torque Control device according to claim 5, it is characterized in that：Described execution module has in Ifb>
Closing control phase winding switching tube during Icmd+ △ I1, work as Ifb<The comparison meter of the phase winding switching tube is opened during Icmd- △ I2
Calculate module, control signal corresponding to described comparison computing module to winding current switching tube output.
7. Direct Torque Control device according to claim 6, it is characterized in that：Described △ I1 and △ I2 is as needed
The hysteresis value of setting.
8. Direct Torque Control device according to claim 7, it is characterized in that：Described execution module has various negative
The hysteresis value memory for carrying and △ I1 and △ I2 lists being corresponded under current levels, described execution module is according to list query pair
△ I1 and △ the I2 hysteresis values answered.
9. Direct Torque Control device according to claim 8, it is characterized in that：Described switched reluctance machines are that N phases are opened
Reluctance motor is closed, wherein N is more than 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711114493.1A CN107659238A (en) | 2017-11-13 | 2017-11-13 | A kind of Direct Torque Control device of switched reluctance machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711114493.1A CN107659238A (en) | 2017-11-13 | 2017-11-13 | A kind of Direct Torque Control device of switched reluctance machines |
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| CN107659238A true CN107659238A (en) | 2018-02-02 |
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| CN201711114493.1A Pending CN107659238A (en) | 2017-11-13 | 2017-11-13 | A kind of Direct Torque Control device of switched reluctance machines |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101662256A (en) * | 2009-09-21 | 2010-03-03 | 南京航空航天大学 | Control method of six-phase ten-pole permanent magnet fault-tolerant motor with strong fault-tolerant capability |
| CN101789738A (en) * | 2010-03-05 | 2010-07-28 | 东南大学 | Device and method for controlling doubly salient permanent magnet motor |
| CN102780433A (en) * | 2012-07-10 | 2012-11-14 | 燕山大学 | Instantaneous torque control method of brushless direct-current motor based on direct-current control |
| CN104506092A (en) * | 2014-12-11 | 2015-04-08 | 东南大学 | Switched reluctance motor current hysteresis control method based on inductance Fourier decomposition |
| CN107070352A (en) * | 2017-06-14 | 2017-08-18 | 齐鲁工业大学 | A kind of Switched Reluctance Motor |
| CN107276465A (en) * | 2017-06-26 | 2017-10-20 | 桂林电子科技大学 | A kind of torque current neutral net switch reluctance motor control method and system |
-
2017
- 2017-11-13 CN CN201711114493.1A patent/CN107659238A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101662256A (en) * | 2009-09-21 | 2010-03-03 | 南京航空航天大学 | Control method of six-phase ten-pole permanent magnet fault-tolerant motor with strong fault-tolerant capability |
| CN101789738A (en) * | 2010-03-05 | 2010-07-28 | 东南大学 | Device and method for controlling doubly salient permanent magnet motor |
| CN102780433A (en) * | 2012-07-10 | 2012-11-14 | 燕山大学 | Instantaneous torque control method of brushless direct-current motor based on direct-current control |
| CN104506092A (en) * | 2014-12-11 | 2015-04-08 | 东南大学 | Switched reluctance motor current hysteresis control method based on inductance Fourier decomposition |
| CN107070352A (en) * | 2017-06-14 | 2017-08-18 | 齐鲁工业大学 | A kind of Switched Reluctance Motor |
| CN107276465A (en) * | 2017-06-26 | 2017-10-20 | 桂林电子科技大学 | A kind of torque current neutral net switch reluctance motor control method and system |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| CB03 | Change of inventor or designer information |
Inventor after: Jiang Zhe Inventor after: Yu Guanjie Inventor after: Zhang Chi Inventor after: Qiao Hai Inventor after: Yang Guilin Inventor after: Zhu Renfeng Inventor before: Jiang Zhe Inventor before: Yu Guanjie Inventor before: Zhang Chi Inventor before: Qiao Hai Inventor before: Chen Feixue Inventor before: Zhu Renfeng |
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| CB03 | Change of inventor or designer information | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180202 |
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| RJ01 | Rejection of invention patent application after publication |