CN102447369A - Switch reluctance motor capable of realizing self checking of rotor position - Google Patents
Switch reluctance motor capable of realizing self checking of rotor position Download PDFInfo
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- CN102447369A CN102447369A CN201110438934XA CN201110438934A CN102447369A CN 102447369 A CN102447369 A CN 102447369A CN 201110438934X A CN201110438934X A CN 201110438934XA CN 201110438934 A CN201110438934 A CN 201110438934A CN 102447369 A CN102447369 A CN 102447369A
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Abstract
The invention discloses a switch reluctance motor capable of realizing self checking of a rotor position. The switch reluctance motor capable of realizing self checking of the rotor position comprises a rotating shaft (10), a stator and a rotor, wherein the rotor comprises a rotor core yoke (8) and a plurality of rotor core teeth (9) arranged on the circumference of the rotor core yoke; the stator comprises a stator core yoke (1) and a plurality of stator core teeth (2) arranged on the circumference at the inner side of the stator core yoke, the stator core teeth (2) form a stator wire slot (3), and the stator wire slot (3) is internally provided with a power winding (4), a slot wedge (5) and a detection winding (7). The motor adopting the technical scheme has rotor position detection function, no additional mechanical position or speed sensor is required to be added when the motor disclosed by the invention is controlled, hardware composition of a control system is simplified, and operational reliability is improved.
Description
Technical field
The present invention relates to a kind of switched reluctance machines, relate in particular to a kind of switched reluctance machines that detects the rotor-position function certainly that has.
Background technology
Switched reluctance machines have simple in structure firm, manufacturing process is simple, cost is low, starting torque is big, low-speed performance is good and the efficient advantages of higher, can adapt to various bad working environment.Abominable and the very high field of security requirement has obtained extensive use at environment such as Aero-Space, mines for it.
The switched reluctance machines drive system mainly is made up of switched reluctance machines, power inverter, controller and rotor-position sensor four parts.Rotor-position sensor is that controller provides rotor-position signal, makes controller can correctly determine turning on and off constantly of motor stator winding.Based on problem such as switched reluctance machines drive system location transducer difficult installation, the reliability of mechanical position sensor be not high.At present, have based on the switched Reluctance Motor Control System of position-sensor-free that amount of calculation is big, the not high defective of precision, be difficult to realize practical applications.
Summary of the invention
Technical problem: the objective of the invention is to the deficiency to prior art, provide that a kind of compact conformation is simple, angle calculation simple, accurately, reliability is high, the switched reluctance machines that detects rotor-position certainly that rotor-position sensor need be installed.
Technical scheme: in order to realize the foregoing invention purpose, the technical scheme that the present invention adopted is:
A kind of switched reluctance machines that detects rotor-position certainly comprises rotating shaft, rotor and stator, and described rotor comprises rotor core yoke and the some rotor core teeth that are arranged on one week of yoke unshakable in one's determination; Described stator comprises stator core yoke and the some stator core tooth that are arranged on stator core yoke inside circumference, and described stator core tooth forms stator slot, is provided with power winding, slot wedge and detection winding in the described stator slot.
Said power winding is placed in the stator slot for concentrating winding.
The notch of described stator slot is provided with draw-in groove; Be embedded in slot wedge at draw-in groove; Slot wedge at rotor dorsad is inboard; Be provided with two along rotor shaft direction and detect winding wire slot, two are detected winding wire slot and equate apart from the width of slot wedge two edges that respectively two effective edges that detect winding are put in these two respectively and detect in the winding wire slot.
It is identical with power winding number to detect the winding number, and the number of phases is identical.
Described slot wedge is a nonferromagnetic material.Slot wedge is a nonferromagnetic material, can avoid the magnetic field of power winding from slot wedge, to pass through, thereby eliminates the interference of power winding magnetic field versus position detection signal.
Rotor-position of the present invention is from detecting principle: when a phase stator core tooth was alignd with the rotor core tooth, this detects the corresponding main magnetic loop in winding magnetic field mutually was nonferromagnetic material, and the inductance value that detects winding is a minimum value
L Min, electrical degree θ=0 of establishing rotor-position this moment.After rotor turned over certain electrical degree, the part iron core of this rotor core tooth just became this part magnetic circuit that detects winding magnetic field mutually, and the inductance value that detects winding can increase.When this rotor core tooth axis detected the axial alignment of winding mutually with this, the inductance value that detects winding reached maximum
L MaxDetect the winding inductance value
LConcrete Changing Pattern be:
Coefficient in the formula
k=(
L Max–
L Min)/
θ 0It is thus clear that through just utilizing formula (1) to calculate the position angle of rotor to the measurement that detects the winding inductance value.
Beneficial effect: the present invention compared with prior art, it has following advantage:
1, the present invention merges position transducer structure and electric machine structure; Position transducer is to have utilized the part-structure of switched reluctance machines and detection winding to form; Detect principle and utilize the electromagnetic property of switched reluctance machines; Promptly through just judging rotor-position to the measurement that detects the winding inductance value, of the present invention just had the rotor position detection function from the switched reluctance machines that detects rotor-position, when control motor of the present invention, need not add mechanical location and velocity transducer; Simplify the hardware of control system and formed, improved reliability of operation;
2, slot wedge can play a protective role to the power winding of switched reluctance machines;
3, detect winding and stagger in the locus, and slot wedge is nonferromagnetic material, detect winding and do not exist electromagnetic coupled to concern, the output signal that the electric current change of power winding can the Interference Detection winding with the power winding with the power winding.
Description of drawings
Fig. 1 is for detect the structure chart of rotor-position switched reluctance machines certainly;
Fig. 2 is slot wedge and the structure chart that detects winding;
Fig. 3 is for detecting winding inductance Changing Pattern figure.
Embodiment
Below in conjunction with accompanying drawing, through a most preferred embodiment, technical scheme of the present invention is elaborated, but protection scope of the present invention is not limited to said embodiment.
As depicted in figs. 1 and 2, for the switched reluctance machines that detects rotor-position certainly of stator ends of the earth rotor sextupole four phases comprises rotating shaft 10, rotor and stator, rotor comprises rotor core yoke 8 and six rotor core teeth 9 that are arranged on one week of yoke unshakable in one's determination; Stator comprises stator core yoke 1 and eight stator core tooth 2 that are arranged on stator core yoke inside circumference, and described stator core tooth 2 forms eight stator slots 3, and described eight power windings 4 are placed in the stator slot 3 for concentrating winding; The notch of described stator slot 3 is provided with draw-in groove 31; Be embedded in slot wedge 5 at draw-in groove 31,, be provided with two along rotor shaft direction and detect winding wire slots 6 in slot wedge 5 inboards of rotor dorsad; Two are detected winding wire slot 6 and equate apart from the width of slot wedge 5 two edges respectively; Two effective edges that detect winding 7 are put in these two respectively and detect in the winding wire slot 6, and slot wedge 5 is processed for nonferromugnetic material, like epoxide resin material; Play the effect of sealed stator wire casing 3 protection power windings 4; The number that detects winding 7 is identical with the number of power winding 4, and it is all identical with the number of phases of power winding 4 to detect winding 7, and in this embodiment will be radially relative two be detected winding 7 and are connected into a phase.
Detection principle of the present invention is: when a phase stator core tooth 2 was alignd with rotor core tooth 9, this detects the corresponding magnetic loop in winding 7 magnetic fields mutually was nonferromagnetic material, and the inductance value that detects winding 7 is a minimum value
L Min, establish rotor electrical degree θ this moment=0.After rotor turned over certain electrical degree, the part iron core of this rotor core tooth 9 just became this part magnetic circuit that detects winding magnetic field mutually, and the inductance value that detects winding 7 can increase.When these rotor core tooth 9 axis detected the axial alignment of winding 7 mutually with this, the inductance value that detects winding 7 reached maximum
L MaxDetect winding 7 inductance value
LConcrete Changing Pattern as shown in Figure 3, that is:
Coefficient in the formula
k=(
L Max–
L Min)/
θ 0It is thus clear that through just utilizing formula (1) to calculate the position of rotor to the measurement that detects winding 7 inductance value.
Claims (5)
1. a switched reluctance machines that detects rotor-position certainly comprises rotating shaft (10), rotor and stator, it is characterized in that: described rotor comprises rotor core yoke (8) and is arranged on some rotor core teeth (9) in one week of yoke unshakable in one's determination; Described stator comprises stator core yoke (1) and is arranged on some stator core tooth (2) of stator core yoke inside circumference; Described stator core tooth (2) forms stator slot (3), is provided with power winding (4), slot wedge (5) in the described stator slot (3) and detects winding (7).
2. according to claim 1 from the switched reluctance machines that detects rotor-position, it is characterized in that: said power winding (4) is placed in the stator slot (3) for concentrating winding.
3. according to claim 1 from the switched reluctance machines that detects rotor-position; It is characterized in that: the notch of described stator slot (3) is provided with draw-in groove (31); Be embedded in slot wedge (5) at draw-in groove (31); In the slot wedge of rotor (5) inboard dorsad; Be provided with two along rotor shaft direction and detect winding wire slot (6), two are detected winding wire slot (6) and equate apart from the width of slot wedge (5) two edges that respectively two effective edges that detect winding (7) are put in these two respectively and detect in the winding wire slot (6).
4. according to claim 1 from the switched reluctance machines that detects rotor-position, it is characterized in that: it is identical with power winding (4) number to detect winding (7) number, and the number of phases is identical.
5. according to claim 3 from the switched reluctance machines that detects rotor-position, it is characterized in that: described slot wedge (5) is a nonferromagnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110438934XA CN102447369B (en) | 2011-12-26 | 2011-12-26 | Switch reluctance motor capable of realizing self checking of rotor position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110438934XA CN102447369B (en) | 2011-12-26 | 2011-12-26 | Switch reluctance motor capable of realizing self checking of rotor position |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102447369A true CN102447369A (en) | 2012-05-09 |
| CN102447369B CN102447369B (en) | 2013-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110438934XA Expired - Fee Related CN102447369B (en) | 2011-12-26 | 2011-12-26 | Switch reluctance motor capable of realizing self checking of rotor position |
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| CN (1) | CN102447369B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916632A (en) * | 2012-10-22 | 2013-02-06 | 中国矿业大学 | Linear modeling method of switch reluctance motor memristor |
| CN103117614A (en) * | 2013-01-24 | 2013-05-22 | 浙江联宜电机股份有限公司 | Stator cotter structure |
| CN103337918A (en) * | 2013-06-17 | 2013-10-02 | 哈尔滨工业大学 | High-speed motor system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1020985A1 (en) * | 1999-01-11 | 2000-07-19 | Switched Reluctance Drives Limited | Rotor position detection in switched reluctance machines |
| CN1398037A (en) * | 2001-07-18 | 2003-02-19 | 乐金电子(天津)电器有限公司 | Switch-type magnetic resistance motor |
| CN1551484A (en) * | 2003-04-24 | 2004-12-01 | 开关磁阻驱动有限公司 | Rotor position determination in a switched reluctance machine |
| CN202424469U (en) * | 2011-12-26 | 2012-09-05 | 中国矿业大学 | Switched reluctance motor capable of self-checking rotor position |
-
2011
- 2011-12-26 CN CN201110438934XA patent/CN102447369B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1020985A1 (en) * | 1999-01-11 | 2000-07-19 | Switched Reluctance Drives Limited | Rotor position detection in switched reluctance machines |
| CN1398037A (en) * | 2001-07-18 | 2003-02-19 | 乐金电子(天津)电器有限公司 | Switch-type magnetic resistance motor |
| CN1551484A (en) * | 2003-04-24 | 2004-12-01 | 开关磁阻驱动有限公司 | Rotor position determination in a switched reluctance machine |
| CN202424469U (en) * | 2011-12-26 | 2012-09-05 | 中国矿业大学 | Switched reluctance motor capable of self-checking rotor position |
Non-Patent Citations (1)
| Title |
|---|
| 毛良明 等: "反串线圈法间接位置检测技术在开关磁阻发电机系统中的应用研究", 《中国电机工程学报》, vol. 20, no. 10, 31 October 2000 (2000-10-31) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916632A (en) * | 2012-10-22 | 2013-02-06 | 中国矿业大学 | Linear modeling method of switch reluctance motor memristor |
| CN102916632B (en) * | 2012-10-22 | 2015-04-29 | 中国矿业大学 | Linear modeling method of switch reluctance motor memristor |
| CN103117614A (en) * | 2013-01-24 | 2013-05-22 | 浙江联宜电机股份有限公司 | Stator cotter structure |
| CN103337918A (en) * | 2013-06-17 | 2013-10-02 | 哈尔滨工业大学 | High-speed motor system |
| CN103337918B (en) * | 2013-06-17 | 2016-06-15 | 哈尔滨工业大学 | High speed electric system |
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| CN102447369B (en) | 2013-12-11 |
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Granted publication date: 20131211 Termination date: 20191226 |