CN104184375B - Control device of switched reluctance motor and control method - Google Patents
Control device of switched reluctance motor and control method Download PDFInfo
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- CN104184375B CN104184375B CN201310188160.9A CN201310188160A CN104184375B CN 104184375 B CN104184375 B CN 104184375B CN 201310188160 A CN201310188160 A CN 201310188160A CN 104184375 B CN104184375 B CN 104184375B
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Abstract
The present invention relates to the technical field of switched reluctance machines, a kind of control device of switched reluctance motor and control method, including PWM generating units, rotor position detection unit, stator coil driver element are disclosed；The rotor-position detected according to rotor position detection unit, PWM ripples for the PWM ripples to be modulated into angled poor M roads, wherein 2≤M ﹤ N, the switch unit of adjacent M phases in N phase stator coils that angled poor M roads PWM ripples input A, B, C respectively ..., and according to rotation direction in A, B, C ... carry out order switching using M as radix, between phase in N phases；PWM generating units are controlled, the rotor-position signal of rotor position detection unit is received and controls the control unit of switch unit accordingly；The present invention can reach the effect of low speed high torque stable operation.
Description
Technical field
The invention belongs to reluctance motor control technology field, more particularly to a kind of control device of switched reluctance motor and control
Method.
Background technology
Traditional switch reluctance motor control method is according to reluctance principle, according to rotor-position, in turn to stator winding
Coil applies excitation, produces continuous moment of torsion and drives motor bringing onto load to rotate；Existing switching magnetic-resistance control mode is to winding
Excitation in turn is produced, while for specific motor and load, the adjustment angle of flow adds PWM copped waves.
The selection of the existing specific angle of flow of winding, is close to corresponding stator salient poles in rotor with salient pole in non-aligned position
When, in corresponding winding inductance rising area, when rotor with salient pole leaves corresponding stator salient poles in non-aligned position, in pair
The winding inductance answered declines area；If encouraging winding in inductance rising area, driving torque will be produced；If declining area in inductance to swash
Winding is encouraged, braking moment will be produced；So, existing control mode is the excitation that was powered before rotor reaches inductance rising area
Winding, to obtain the electric current needed for winding, reaches power-off before inductance declines area in rotor and stops excitation winding, in order to avoid in inductance
Decline area and produce braking moment；But this mode is not suitable for the situation that motor operation is loaded in low-speed big.Always with
Come, low-speed big controls just a difficult point and focus in always Motor Control Field.
Patent of invention number 200680019780.8 (method for being used for controlling switch reluctance motor), discloses one kind and passes through
Winding conduction time overlaps, the method for reducing torque pulsation, and power-up sequence is A-AB-B-BC-C-CD-D-DA（It is special with the invention
8/6 switched reluctance machines in sharp specification are illustrated）；The state of overlapping conducting is added in the middle of conducting in turn, this
Sample can reduce torque ripple.Allow a winding conduction time part to work in inductance simultaneously and decline area, to produce braking moment,
To offset a part of driving torque so that motor energy low cruise.But the shortcoming of this method is：It is powered between winding overlapping
Time is shorter, and the torque pulsation of reduction is limited；A winding conduction time part works in inductance and declines area, generates braking and turns round
Square, reduces electric efficiency；Under extremely low speed（Such as 20rpm）Still it is unable to even running.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of control device of switched reluctance motor, it is intended to solves prior art
In extremely low speed under the problem of be still unable to even running.
The present invention is achieved in that a kind of control device of switched reluctance motor, including：
PWM generating units for producing PWM ripples；
Rotor position detection unit for detecting rotor-position；
The stator coil driver element of N phases stator coil for driving A, B, C ...；
The rotor-position detected according to the rotor position detection unit, angled poor M is modulated into by the PWM ripples
The adjacent M phases for making the angled poor M roads PWM ripples input respectively in A, B, C ... N phase stator coils after the PWM ripples on road,
And according to the switch unit of rotation direction carry out order switching using M as radix, between phase in A, B, C ... N phases, wherein
2≤M ﹤ N；
Control the PWM generating units and receive the rotor-position signal and accordingly of the rotor position detection unit
Control the control unit of the switch unit；
Described control unit is electrically connected with the PWM generating units；Described control unit detects single with the rotor-position
Member electrical connection；Described control unit is electrically connected with the switch unit；The switch unit is fixed with A, B, C ... N phases respectively
Subcoil driver element is electrically connected.
Further, the PWM generating units are the PWM ripple generating units of quasi sine.
Further, also including the rotation speed detection unit detected to rotor speed, the rotation speed detection unit and institute
State control unit electrical connection.
Further, also including the current detecting unit detected to stator current, the current detecting unit and institute
State control unit electrical connection.
Further, the protection of the switched reluctance machines out of service when stator current, voltage exceed setting value is also included
Unit, the protection location is electrically connected with described control unit.
Further, also including the display unit shown to running status, the display unit and the control are single
Member electrical connection.
Present invention also offers a kind of control method of the control device of switched reluctance motor of application the claims, bag
Include following step：
S01, interpolar determined and alternate phase difference according to the space number of magnetic poles and the number of phases of stator winding；
S02, the adjacent M phases into N phase windings send PWM ripples, wherein 2≤M ﹤ N, the phase differences of the PWM ripples of the M phases by
S01 is determined；
S03, according to direction of rotation, send PWM ripples in alternate switching, make that the resultant magnetic field of M phase stator winding is stable to rotate；
Rotor speed is determined by the switch speed of the switch unit.
Further, the PWM ripples are quasi-sine-waves.
It is compared with the prior art, in the control device of switched reluctance motor that the present invention is provided, as a result of multiphase simultaneously
Make a concerted effort complementary drive controller, so having reached the technique effect of low speed high torque stable operation.
Brief description of the drawings
Fig. 1 is the first control device of switched reluctance motor schematic diagram that the present invention is provided；
Fig. 2 is second of control device of switched reluctance motor schematic diagram that the present invention is provided；
Fig. 3 is the third control device of switched reluctance motor schematic diagram that the present invention is provided；
Fig. 4 is the 4th kind of control device of switched reluctance motor schematic diagram that the present invention is provided；
Fig. 5 is the 5th kind of control device of switched reluctance motor schematic diagram that the present invention is provided；
Fig. 6 is the schematic diagram of the controlled motor operation for the control device of switched reluctance motor that the present invention is provided；
Fig. 7 is the step schematic diagram of the control method for the control device of switched reluctance motor that the present invention is provided.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The present invention provides a kind of control device of switched reluctance motor, including：
PWM generating units for producing PWM ripples；
Rotor position detection unit for detecting rotor-position；
The stator coil driver element of N phases stator coil for driving A, B, C ...；
The rotor-position detected according to the rotor position detection unit, angled poor M is modulated into by the PWM ripples
The adjacent M phases for making the angled poor M roads PWM ripples input respectively in A, B, C ... N phase stator coils after the PWM ripples on road,
And according to the switch unit of rotation direction carry out order switching using M as radix, between phase in A, B, C ... N phases, wherein
2≤M ﹤ N；
Control the PWM generating units and receive the rotor-position signal and accordingly of the rotor position detection unit
Control the control unit of the switch unit；
Described control unit is electrically connected with the PWM generating units；Described control unit and rotor position detection unit electricity
Connection；Described control unit is electrically connected with the switch unit；The switch unit drives with A, B, C ... N phases stator coil respectively
Moving cell is electrically connected.
As a result of the controller of the complementary drive of making a concerted effort of multiphase simultaneously, so having reached low speed high torque stable operation
Technique effect.
The realization of the present invention is described in detail below in conjunction with specific embodiment.
As shown in figure 1, the first embodiment provided for the present invention.
A kind of control device of switched reluctance motor that the present embodiment is provided, including：List occurs for the PWM for producing PWM ripples
Member；Rotor position detection unit for detecting rotor-position；For driving A, B, C ..., the stator coil of N phases stator coil drives
Moving cell；The rotor-position detected according to the rotor position detection unit, for PWM ripples to be modulated into angled poor M
The PWM ripples on road, wherein 2≤M ﹤ N, differential seat angle is determined according to the space series of stator, it is stable to ensure M resultant magnetic field vector,
The adjacent M phases in N phase stator coils that angled poor M roads PWM ripples input A, B, C respectively ..., and according to rotation direction A, B,
In C ... N phases using M as radix, between phase carry out order switching switch unit；PWM generating units are controlled, rotor-position is received
The rotor-position signal of detection unit and the control unit for controlling switch unit accordingly；Control unit is electrically connected with PWM generating units
Connect；Control unit is electrically connected with rotor position detection unit；Control unit is electrically connected with switch unit；Switch unit respectively with A,
B, C ... N phase stator coils driver element are electrically connected.
As a result of the controller of the complementary drive of making a concerted effort of multiphase simultaneously, so having reached low speed high torque stable operation
Technique effect.
Further, the PWM generating units are the PWM ripple generating units of quasi sine, as a result of quasi-sine-wave, are reached
Drive efficiency is arrived high, the small effect of noise.
As shown in Fig. 2 further, also including the rotation speed detection unit detected to rotor speed, the rotating speed inspection
Survey unit to electrically connect with described control unit, by introducing velocity feedback, reach stable purpose.
As shown in figure 3, further, also including the current detecting unit detected to stator current, the electric current inspection
Survey unit to electrically connect with described control unit, by introducing current feedback, carry out pid algorithm control, reach the mesh of stable operation
's.
As shown in figure 4, further, also including the switching magnetic-resistance out of service when stator current, voltage exceed setting value
The protection location of motor, the protection location is electrically connected with described control unit, so improves reliability of operation.
As shown in figure 5, further, also including the display unit shown to running status, the display unit with
Described control unit is electrically connected, and has thus reached the purpose of real-time monitoring running status.
As shown in fig. 7, present invention also offers a kind of control device of switched reluctance motor of application the claims
Control method, comprises the steps：
S01, interpolar determined and alternate phase difference according to the space number of magnetic poles and the number of phases of stator winding；
S02, the adjacent M phases into N phase windings send PWM ripples, wherein the phase difference of the PWM ripples of 2≤M ﹤ N, M phases is by S01
It is determined that；
S03, according to direction of rotation, send PWM ripples in alternate switching, make that the resultant magnetic field of M phase stator winding is stable to rotate；
Rotor speed is determined by the switch speed of switch unit.
Further, PWM ripples are quasi-sine-waves, have reached that drive efficiency is high, the small effect of noise.
As shown in fig. 6, by taking the switched reluctance machines of three-phase 12/8 as an example, rotor with salient pole number is 8, and number of stator slots is 12, work
In under the heavy load of extremely low rotating speed, such as 20RPM, according to conventional control units, it may appear that rotating speed is too high, electric current is too big or turns
Square is too small, it is impossible to stable speed operation.
In motor low cruise, while encouraging two phase windings, initial position of rotor is shown with Fig. 6, when motor rotation
When, power-up sequence is：AB-BC-CA, two-phase winding current uses the method for quasi-sine-wave PWM, is determined with forming quasi-sine-wave
Sub- Field orientable control（SFOC, Stator Flux Oriented Control）, the sine-wave current of latter winding is delayed
One angle of sine-wave current of previous winding, synthesizes a relatively stable magnetic vector, it is ensured that motor turns under low speed
Square it is smooth.
The better embodiment of the present invention is the foregoing is only, is not intended to limit the invention, it is all the present invention's
Any modification, equivalent and improvement made within spirit and principle etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of control device of switched reluctance motor, it is characterised in that：Including：
PWM generating units for producing PWM ripples；
Rotor position detection unit for detecting rotor-position；
The stator coil driver element of N phases stator coil for driving A, B, C ...；
The rotor-position detected according to the rotor position detection unit, angled poor M roads are modulated into by the PWM ripples
The adjacent M phases for making the angled poor M roads PWM ripples input respectively in A, B, C ... N phase stator coils after PWM ripples, and root
According to the switch unit of rotation direction carry out order switching using M as radix, between phase in A, B, C ... N phases, wherein 2≤M
﹤ N；
Control the PWM generating units and receive the rotor-position signal of the rotor position detection unit and control accordingly
The control unit of the switch unit；
Described control unit is electrically connected with the PWM generating units；Described control unit and rotor position detection unit electricity
Connection；Described control unit is electrically connected with the switch unit；The switch unit respectively with A, B, C ... N phases stator line
Enclose driver element electrical connection.
2. control device of switched reluctance motor as claimed in claim 1, it is characterised in that：The PWM generating units be it is accurate just
The PWM ripple generating units of string.
3. control device of switched reluctance motor as claimed in claim 1 or 2, it is characterised in that：Also include entering rotor speed
The rotation speed detection unit of row detection, the rotation speed detection unit is electrically connected with described control unit.
4. control device of switched reluctance motor as claimed in claim 1 or 2, it is characterised in that：Also include entering stator current
The current detecting unit of row detection, the current detecting unit is electrically connected with described control unit.
5. control device of switched reluctance motor as claimed in claim 4, it is characterised in that：Also include working as stator current, voltage
The protection location of switched reluctance machines out of service during more than setting value, the protection location is electrically connected with described control unit.
6. control device of switched reluctance motor as claimed in claim 1 or 2, it is characterised in that：Also include entering running status
The display unit of row display, the display unit is electrically connected with described control unit.
7. a kind of control method of the control device of switched reluctance motor described in any one of application claim 1 to 6, its feature exists
In：Comprise the steps：
S01, interpolar determined and alternate phase difference according to the space number of magnetic poles and the number of phases of stator winding；
S02, the adjacent M phases into N phase windings send PWM ripples, wherein 2≤M ﹤ N, the phase difference of the PWM ripples of the M phases is by S01
It is determined that；
S03, according to direction of rotation, send PWM ripples in alternate switching, make that the resultant magnetic field of M phase stator winding is stable to rotate；Rotor
Rotating speed is determined by the switch speed of the switch unit.
8. the control method of application switch reluctance motor control assembly as claimed in claim 7, it is characterised in that：The PWM
Ripple is quasi-sine-wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310188160.9A CN104184375B (en) | 2013-05-20 | 2013-05-20 | Control device of switched reluctance motor and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310188160.9A CN104184375B (en) | 2013-05-20 | 2013-05-20 | Control device of switched reluctance motor and control method |
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| CN104184375A CN104184375A (en) | 2014-12-03 |
| CN104184375B true CN104184375B (en) | 2017-07-14 |
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| CN201310188160.9A Active CN104184375B (en) | 2013-05-20 | 2013-05-20 | Control device of switched reluctance motor and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111682806A (en) * | 2020-06-17 | 2020-09-18 | 山东艾磁驱动科技有限公司 | Method for low-speed vibration operation of 8-6 pole switch reluctance motor for food machinery |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101453184A (en) * | 2007-11-30 | 2009-06-10 | 北京中纺锐力机电有限公司 | Speed regulating system for switch reluctance motor |
| CN201758378U (en) * | 2010-03-03 | 2011-03-09 | 中国矿业大学 | Speed regulation fan switch magnetic resistance speed regulation electromotor device |
| CN102931901A (en) * | 2012-10-31 | 2013-02-13 | 奇瑞汽车股份有限公司 | Switched reluctance motor generator control system and control method thereof |
| CN203289363U (en) * | 2013-05-20 | 2013-11-13 | 捷和电机制品(深圳)有限公司 | Control device of switched reluctance motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003088156A (en) * | 2001-09-11 | 2003-03-20 | Sanyo Electric Co Ltd | Controller of brushless motor |
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2013
- 2013-05-20 CN CN201310188160.9A patent/CN104184375B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101453184A (en) * | 2007-11-30 | 2009-06-10 | 北京中纺锐力机电有限公司 | Speed regulating system for switch reluctance motor |
| CN201758378U (en) * | 2010-03-03 | 2011-03-09 | 中国矿业大学 | Speed regulation fan switch magnetic resistance speed regulation electromotor device |
| CN102931901A (en) * | 2012-10-31 | 2013-02-13 | 奇瑞汽车股份有限公司 | Switched reluctance motor generator control system and control method thereof |
| CN203289363U (en) * | 2013-05-20 | 2013-11-13 | 捷和电机制品(深圳)有限公司 | Control device of switched reluctance motor |
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