CN201789394U - Permanent magnet driving motor for sun tracking system - Google Patents
Permanent magnet driving motor for sun tracking system Download PDFInfo
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- CN201789394U CN201789394U CN2010205062904U CN201020506290U CN201789394U CN 201789394 U CN201789394 U CN 201789394U CN 2010205062904 U CN2010205062904 U CN 2010205062904U CN 201020506290 U CN201020506290 U CN 201020506290U CN 201789394 U CN201789394 U CN 201789394U
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- permanent magnet
- rectangular strip
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Abstract
The utility model relates to a permanent magnet driving motor for a sun tracking system. The permanent magnet driving motor comprises a casing, as well as a stator and a rotor which are arranged in the casing, wherein the stator comprises a stator core and a stator winding both fixed on the inner wall of the casing; the stator core comprises a stator magnetic yoke, stator slots and stator teeth; the rotor comprises a rotating shaft and a rotor core; permanent magnet slots are uniformly formed on the rotor core in the inner circumferential direction; radially magnetized rectangular strip-shaped magnetic steel is embedded in the permanent magnet slots and forms a permanent magnet pole with a pole shoe; concentric or eccentric arc-shaped curved surfaces are formed on the excircle of a pole shoe of the rotor, so as to form uniform or nonuniform symmetric radial air gaps; semicircular grooves are formed at two ends of a permanent magnet slot where one of two adjacent radially magnetized rectangular strip-shaped magnetic steel is positioned; the radially magnetized rectangular strip-shaped magnetic steel adopts V-shaped radially magnetized rectangular strip-shaped magnetic steel; and rectangular stays are inserted in the permanent magnet slots in the radial direction where the V-shaped radially magnetized rectangular strip-shaped magnetic steel is positioned. The permanent magnet driving motor has the characteristics of high efficiency, high output, high reliability, low momentum fluctuation, etc.
Description
Technical field
The utility model relates to a kind of permanent magnet drive motor, relates in particular to a kind of solar tracking system with efficient, high output, high power density, high reliability with low torque fluctuations is surface-mounted or the built-in type permanent-magnet drive motors, belongs to technical field of motors.
Background technology
Solar tracking system is the Application Design that need carry out real-time tracking at solar energy power generating to the sun.Basic function is that photovoltaic array is rotated along with the sun, realizes high-precision solar tracking.The stability of sun tracker and reliability be always its not by the subject matter of large-scale application, the drive motors performance is one of crucial.At present both at home and abroad the solar tracking drive motors adopts permanent magnet DC motor basically, has that power consumption is big, efficient is low, Electro Magnetic Compatibility is poor, noise is big, torque fluctuations is big, defectives such as poor linearity, overload capacity are low, commutator spark, wear of brush and poor reliability.System reliability is poor, tracking error is big, cost is too high.Performance is most important to the lifting of solar tracking system quality, directly influences solar energy utilization ratio and reliability.There is bigger torque fluctuations in its armature excitation of non-brush permanent-magnet DC motor (PMBLM) of researching and developing at present both at home and abroad for the rotating magnetic field of " non-circular great-jump-forward ", and precision is low, and speed adjustable range is also narrow, influence that motor is efficient, wide range speed control, steady low noise move.
The utility model content
The purpose of this utility model provides the permanent magnet drive motor for solar tracking system of a kind of efficient, high output, high power density, high reliability and low torque fluctuations.
The purpose of this utility model is achieved through the following technical solutions:
Permanent magnet drive motor for solar tracking system, comprise stator and rotor in casing and the casing, stator comprises stator core and the stator winding that is fixed on casing inner wall, stator core comprises stator yoke, stator slot and stator tooth, rotor comprises rotating shaft and rotor core, characteristics are: described rotor core inner periphery direction evenly has the permanent magnetism groove, in the permanent magnetism groove, stud with diametrical magnetization rectangular strip magnet steel, diametrical magnetization rectangular strip magnet steel and pole shoe constitute permanent magnetism magnetic pole, the pole shoe cylindrical is concentric or non-concentric arcs curved surface, forms even or inhomogeneous symmetrical radial air gap.
Further, above-mentioned permanent magnet drive motor for solar tracking system, wherein, the two ends open semicircle groove of the permanent magnetism groove at a diametrical magnetization rectangular strip magnet steel place in described adjacent two blocks of diametrical magnetization rectangular strip magnet steel.
Further, above-mentioned permanent magnet drive motor for solar tracking system, wherein, described diametrical magnetization rectangular strip magnet steel is a V-type diametrical magnetization rectangular strip magnet steel.
Again further, above-mentioned permanent magnet drive motor for solar tracking system wherein, radially is inserted with rectangular stay in the permanent magnetism groove at described V-type diametrical magnetization rectangular strip magnet steel place.
The substantive distinguishing features of technical solutions of the utility model and progressive being mainly reflected in:
1. the spaced apart groove in adjacent pole two ends of the utility model built-in type permanent-magnet rotor core significantly reduces the fluctuation of motor resultant moment, compares with conventional permanent magnet drive motor (not open semicircle groove), and torque fluctuations reduces 40%, realizes the high-precision and stable operation;
2. the inhomogeneous symmetrical radial air gap between electric machine rotor, have poly-magnetic, improve the air-gap field waveform, make air-gap field near sinusoidal wave, reduce motor noise, torque fluctuations, suppress static and dynamic armature reaction, improve overload capacity, improve the solar tracking system precision;
3. in the permanent magnetism groove between built-in V-type magnet steel, radially insert the high-intensity resin rectangular stay, anti-mechanical strength, centrifugal force when reducing the rotor high-speed operation, the magnetic bridge width can reduce, improve air gap flux density, but torque increases by 10%, make that motor has efficiently, characteristics such as high output, high reliability and low torque fluctuations.
Description of drawings
Below in conjunction with accompanying drawing technical solutions of the utility model are described further:
Fig. 1: built-in type permanent-magnet (IPM) the motor generalized section of the spaced apart groove in band magnetic pole two ends;
Fig. 2.: the moment of Fig. 1 structural electromotor and the anglec of rotation concern the waveform schematic diagram;
Fig. 3: the permanent magnet drive motor generalized section of built-in V-type diametrical magnetization rectangular strip magnet steel;
Fig. 4: the partial cutaway schematic of inserting the built-in type permanent-magnet structure of rectangular stay between the V-type magnet steel;
Fig. 5: the partial cutaway schematic of inserting the interior permanent magnet machines of rectangular stay between the V-type magnet steel;
Fig. 6.: between Fig. 5 magnetic steel of motor band with do not concern schematic diagram with the output torque and the power angle of rectangular stay;
Fig. 7: the built-in type permanent-magnet rotor profiles schematic diagram of band non-uniform gap;
Fig. 8: magneto air gap flux density waveform schematic diagram.
The implication of each Reference numeral sees the following form among the figure:
Embodiment
There are defectives such as power consumption is big, efficient is low, torque fluctuations is big at the solar tracking drive motors, the utility model provides permanent magnet drive motor for solar tracking system, can effectively follow the tracks of sun altitude and azimuth rotates, move according to solar motion track mode, follow the tracks of the sun from east to west and declination angle, solve sunlight all the time vertical irradiation to body surface, guarantee to obtain the maximum solar energy, guarantee any by day moment of solar cell array all over against the sun, realize 8 hours automatic real-time tracings of whole day the sun.The performance optimization technology of the utility model solar tracking drive motors can reduce permanent-magnet eddy current loss 50%, reduces torque fluctuations 40%, increases output torque 10%, improves power density 12%.
As shown in Figure 1, permanent magnet drive motor for solar tracking system, comprise stator and rotor in casing and the casing, stator comprises stator core and the stator winding that is fixed on casing inner wall, stator core comprises stator yoke 6, stator slot 7 and stator tooth 8, rotor comprises rotating shaft 9 and rotor core, rotor core inner periphery direction evenly has permanent magnetism groove 2, in permanent magnetism groove 2, stud with diametrical magnetization rectangular strip magnet steel 1b, diametrical magnetization rectangular strip magnet steel 1b and pole shoe 4 constitute permanent magnetism magnetic pole, rotating pole-piece 4 cylindricals are concentric or non-concentric arcs curved surface, form even or inhomogeneous symmetrical radial air gap 5.Inhomogeneous symmetrical radial air gap between electric machine rotor has poly-magnetic, improves the air-gap field waveform, makes air-gap field near sine wave, reduces motor noise, torque fluctuations, suppresses static and dynamic armature reaction, improves overload capacity.
The two ends open semicircle groove 3 of the permanent magnetism groove at a diametrical magnetization rectangular strip magnet steel place in adjacent two blocks of diametrical magnetization rectangular strip magnet steel.Be the spaced apart grooves in magnetic pole two ends, for example for 6 pole permanent magnet motors, only 1,3,5 magnetic pole two ends open semicircle groove, 2,4, do not slot in 6 magnetic pole two ends, because adjacent pole polar arc width (or pole span) is separated by nearly 180 ° (electrical degrees), as shown in Figure 2, make motor pole two ends fluting and the moment Tr and the relation curve of anglec of rotation β: the Tr=f (β) that do not slot and produce, be that the moment waveform is near opposite, curve a is the moment waveform of magnetic pole not recessing of two ends, curve b is the moment waveform of magnetic pole two ends recessing, resultant moment (as curve c) fluctuation after the stack is significantly reduced, compare with conventional permanent magnet drive motor (not open semicircle groove), torque fluctuations reduces 40%, realizes the operation of motor high-precision and stable.
As Fig. 3, rotor core inner periphery direction evenly has permanent magnetism groove 2, and V-type diametrical magnetization rectangular strip magnet steel 1c is set in the permanent magnetism groove 2, is called V-type built-in type permanent-magnet (IPM).V-type diametrical magnetization rectangular strip magnet steel 1c and pole shoe 4 constitute permanent magnetism magnetic pole.Because " built-in type permanent-magnet ", the magnetic conductive pole piece leakage field can be very big, therefore, be provided with every magnetic magnetic bridge (its width is h) between magnetic pole, h must be enough narrow every magnetic magnetic bridge width, assurance is saturated every magnetic magnetic bridge section magnetic circuit height, magnetic capacity reduces, and reduces magnetic bridge punishment stream magnetic flux, reduces leakage field, increase useful flux, raising is exerted oneself.Narrow more every magnetic magnetic bridge width, magnetic circuit is saturated more, and leakage field is few more, but the too narrow rotor mechanical intensity that influences.
As Fig. 4, Fig. 5, radially insert high-intensity resin rectangular stay 10 in the permanent magnetism groove 2 in the middle of built-in V-type diametrical magnetization rectangular strip magnet steel 1c, anti-mechanical strength, the stress when reducing the rotor high-speed operation is concentrated and centrifugal force.Proof: relatively insert in the permanent magnetism groove between the V-type magnet steel and the motor that does not insert rectangular stay, under same rotational speed, in order to guarantee to bear same stress and centrifugal force every magnetic magnetic bridge section, the former is every the necessary 1.8mm (Fig. 3) of magnetic magnetic bridge width h, and the latter (Fig. 4, Fig. 5) only be 0.9mm, thereby significantly reduce leakage field, increase useful flux, improve air gap flux density, the power density of magnet steel utilance and motor, Fig. 6 for band between Fig. 5 magnetic steel of motor with not with the output torque T and the load angle relation of rectangular stay, solid line d is band rectangular stay ipm motor output torque waveform, dotted line e is not for being with rectangular stay ipm motor output torque waveform, as shown in Figure 6: adopt the former of rectangular stay, increase torque 10%, motor is had efficiently, high output, high power density, characteristic such as high reliability and low torque fluctuations.
As Fig. 5, Fig. 7, rotating pole-piece 4 cylindricals are non-concentric arcs curved surface, form inhomogeneous symmetrical radial air gap 5, and the inhomogeneous symmetrical radial air gap 5 between electric machine rotor has poly-magnetic, improves the air-gap field waveform effect.Fig. 8 has illustrated magneto air gap flux density waveform, and Bg represents air gap flux density among Fig. 8, and π represents that the electrical degree of pole span (distance of magnetic pole) is 180 °, and pi/2 is 90 ° of electrical degrees, and m is square wave for the air gap flux density waveform of band even air gap; N is the air gap flux density waveform of band non-uniform gap, near sinusoidal wave, thereby motor noise, torque fluctuations have been reduced, suppress static and dynamic armature reaction, improve overload capacity, built-in type permanent-magnet can produce reluctance torque simultaneously, be beneficial to high-speed cruising and frequent starting, realize the even running of efficient, high output, high power density, wide range speed control, fast-response, realize the motor miniaturization and.
What need understand is: the above only is a preferred implementation of the present utility model; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (4)
1. permanent magnet drive motor for solar tracking system, comprise stator and rotor in casing and the casing, stator comprises stator core and the stator winding that is fixed on casing inner wall, stator core comprises stator yoke, stator slot and stator tooth, rotor comprises rotating shaft and rotor core, it is characterized in that: described rotor core inner periphery direction evenly has the permanent magnetism groove, in the permanent magnetism groove, stud with diametrical magnetization rectangular strip magnet steel, diametrical magnetization rectangular strip magnet steel and pole shoe constitute permanent magnetism magnetic pole, the pole shoe cylindrical is concentric or non-concentric arcs curved surface, forms even or inhomogeneous symmetrical radial air gap.
2. permanent magnet drive motor for solar tracking system according to claim 1 is characterized in that: the two ends open semicircle groove of the permanent magnetism groove at a diametrical magnetization rectangular strip magnet steel place in described adjacent two blocks of diametrical magnetization rectangular strip magnet steel.
3. permanent magnet drive motor for solar tracking system according to claim 1 is characterized in that: described diametrical magnetization rectangular strip magnet steel is a V-type diametrical magnetization rectangular strip magnet steel.
4. permanent magnet drive motor for solar tracking system according to claim 3 is characterized in that: radially be inserted with rectangular stay in the permanent magnetism groove at described V-type diametrical magnetization rectangular strip magnet steel place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205062904U CN201789394U (en) | 2010-08-26 | 2010-08-26 | Permanent magnet driving motor for sun tracking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205062904U CN201789394U (en) | 2010-08-26 | 2010-08-26 | Permanent magnet driving motor for sun tracking system |
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| Publication Number | Publication Date |
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| CN201789394U true CN201789394U (en) | 2011-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010205062904U Expired - Lifetime CN201789394U (en) | 2010-08-26 | 2010-08-26 | Permanent magnet driving motor for sun tracking system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917076A (en) * | 2010-08-26 | 2010-12-15 | 苏州工业园区和鑫电器有限公司 | Permanent magnet drive motor for solar tracking system |
| CN102904358A (en) * | 2011-07-25 | 2013-01-30 | Rbc制造公司 | Permanent magnet rotors and methods of assembling the same |
| CN103023260A (en) * | 2012-11-23 | 2013-04-03 | 珠海格力电器股份有限公司 | Secondary self-starting permanent-magnet synchronous motor rotor |
| CN103956873A (en) * | 2014-04-25 | 2014-07-30 | 联合汽车电子有限公司 | Permanent magnet synchronous motor and rotor thereof |
| CN104821700A (en) * | 2015-04-30 | 2015-08-05 | 广东高标电子科技有限公司 | Tilting external rotor permanent-magnet motor |
| CN112234736A (en) * | 2020-09-24 | 2021-01-15 | 安徽飞翔电器有限公司 | Super-efficient permanent magnet new energy direct-current brushless energy-saving automobile motor |
-
2010
- 2010-08-26 CN CN2010205062904U patent/CN201789394U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917076A (en) * | 2010-08-26 | 2010-12-15 | 苏州工业园区和鑫电器有限公司 | Permanent magnet drive motor for solar tracking system |
| CN101917076B (en) * | 2010-08-26 | 2012-12-12 | 苏州和鑫电气股份有限公司 | Permanent magnet drive motor for solar tracking system |
| CN102904358A (en) * | 2011-07-25 | 2013-01-30 | Rbc制造公司 | Permanent magnet rotors and methods of assembling the same |
| CN103023260A (en) * | 2012-11-23 | 2013-04-03 | 珠海格力电器股份有限公司 | Secondary self-starting permanent-magnet synchronous motor rotor |
| CN103023260B (en) * | 2012-11-23 | 2015-08-05 | 珠海格力电器股份有限公司 | Two pole formula rotor for self-starting permanents |
| CN103956873A (en) * | 2014-04-25 | 2014-07-30 | 联合汽车电子有限公司 | Permanent magnet synchronous motor and rotor thereof |
| CN104821700A (en) * | 2015-04-30 | 2015-08-05 | 广东高标电子科技有限公司 | Tilting external rotor permanent-magnet motor |
| CN104821700B (en) * | 2015-04-30 | 2017-08-11 | 广东高标电子科技有限公司 | Tilting outer-rotor permanent magnet motor |
| CN112234736A (en) * | 2020-09-24 | 2021-01-15 | 安徽飞翔电器有限公司 | Super-efficient permanent magnet new energy direct-current brushless energy-saving automobile motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110406 |