CN104242492A - Grouped excitation control inner stator type alternating current motor - Google Patents
Grouped excitation control inner stator type alternating current motor Download PDFInfo
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- CN104242492A CN104242492A CN201410456125.5A CN201410456125A CN104242492A CN 104242492 A CN104242492 A CN 104242492A CN 201410456125 A CN201410456125 A CN 201410456125A CN 104242492 A CN104242492 A CN 104242492A
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Abstract
The invention discloses a grouped excitation control inner stator type alternating current motor which solves the problem of surplus effective excitation power in the operation stage of an existing heavy-load and small-power outer stator type alternating current motor with a low running speed. The grouped excitation control inner stator type alternating current motor comprises a motor inner stator (1) formed by overlaying annular silicon steel sheets, wherein a pole shoe stator winding coil (5) is arranged at the waist portion of each stator I-shaped pole shoe (4), and each stator I-shaped pole shoe (4) and the corresponding pole shoe stator winding coil on the stator I-shaped pole shoe (4) form a unit stator pole shoe which is movably inserted into a stator pole shoe long groove (3) through the dovetail portion of the stator I-shaped pole shoe (4), six unit stator pole shoes form a first stator excitation group, and multiple stator excitation groups are arranged on the inner lateral surface of a motor outer stator formed by overlaying the annular silicon steel sheets. A programmable controller (10) controls the stator excitation groups to be powered on and off. The grouped excitation control inner stator type alternating current motor is particularly suitable for serving as an alternating current driving motor starting under a heavy load and operating at a low speed under a heavy load for a long time.
Description
Technical field
The present invention relates to a kind of internal stator type alternating current motor, particularly a kind of internal stator type alternating current machine of applicable heavy load starting.
Background technology
The stator core of existing internal stator type alternating current motor laminates aftershaping by some silicon steel punched chips mostly, in order to embed stator exciting coil, silicon steel sheet outwards goes out along its yoke the gear piece that several point to stator punching center, that is stator core is made up of stator yoke and stator teeth, stator coil is then be wrapped on stator teeth, the motor of this structure, the utilance of stator punching is lower, and when embedding stator coil, generally embed by manual or come by automatic coil winding machine, because the gap between adjacent stators teeth portion is smaller, cause rule working space little, coiling is extremely inconvenient, the problem cannot changed after simultaneously also there is coiling failure.Conveniently rule, general stator rabbet arranges all larger, and the copper factor that result in motor is lower.In addition, the number of turn of the stator winding of existing internal stator type alternating current motor fixes, can not arbitrarily change, its starting torque and breakdown torque are certain, when this just causes and chooses drive motor according to load, need to select the motor of 1.5-2 times of nominal load to start requirement to meet it, when entering into normal operating phase after electric motor starting, motor is in light running state often, there is the problem that effective exciting power power factor that is superfluous and alternating current motor is lower, the heavy duty low speed small power alternating current motor particularly used in conveyer belt transmission system, the problems referred to above are especially outstanding.
Summary of the invention
The invention provides a kind of internal stator type alternating current machine of the excitation con-trol that divides into groups, solve phase run effective exciting power surplus and the not easily changeable technical problem of stator coil of the internal stator type alternating current machine existence that existing heavy-duty low-speed runs.
The present invention solves above technical problem by the following technical programs:
A kind of internal stator type alternating current machine of the excitation con-trol that divides into groups, comprise electric motor internal stator and motor outer rotor, electric motor internal stator is overrided to form by ring-shaped silicon steel sheet, the lateral surface of the electric motor internal stator formed after ring-shaped silicon steel sheet laminates is provided with the stator pole shoes elongated slot that six vertical sections are swallowtail shape at equal intervals radian mutually in parallel with each other, the waist of the I-shaped pole shoe of stator is provided with pole shoe stator winding coil, the I-shaped pole shoe of stator and the pole shoe stator winding coil component units stator pole shoes on it, unit stator pole shoes is plugged in stator pole shoes elongated slot by the swallow shape afterbody activity of the I-shaped pole shoe of stator, a unit stator pole shoes is all plugged with in six stator pole shoes elongated slots on the same vertical section of electric motor internal stator, these six unit stator pole shoes form first group of stator excitation group, pole shoe stator winding coil in first group of stator excitation group on two unit stator pole shoes is diametrically electrically connected with Programmable Logic Controller after series connection, also another unit stator pole shoes is all plugged with in six stator pole shoes elongated slots on another same vertical section of electric motor internal stator first group of stator excitation group side, these six another unit stator pole shoes form second group of stator excitation group, pole shoe stator winding coil in second group of stator excitation group on two unit stator pole shoes diametrically is also electrically connected with Programmable Logic Controller after series connection, unit stator pole shoes spacer block is provided with between another unit stator pole shoes of unit stator pole shoes in first group of stator excitation group and second group of stator excitation group.
The medial surface of motor outer rotor is provided with the rotor tooth block length groove that four vertical sections are swallowtail shape at equal intervals along the inner periphery of rotor silicon steel sheet radian mutually in parallel with each other, the waist of the I-shaped tooth block of rotor is provided with tooth block rotor winding coil, the I-shaped tooth block of rotor and the tooth block rotor winding coil component units rotor tooth block on it, unit rotor tooth block is plugged in rotor tooth block length groove by the swallow shape afterbody activity of the I-shaped tooth block of rotor, a unit rotor tooth block is all plugged with in four rotor tooth block length grooves on the same vertical section of motor outer rotor, these four unit rotor tooth blocks form the first group rotor coil groups, tooth block rotor winding coil on four unit rotor tooth blocks in first group rotor coil groups is electrically connected with Programmable Logic Controller after connecting successively, four rotor tooth block length grooves on another same vertical section of the motor outer rotor of the first group rotor coil groups side are also all plugged with another unit rotor tooth block, these four another unit rotor tooth blocks form the second group rotor coil groups, tooth block rotor winding coil on four in second group rotor coil groups another unit rotor tooth blocks is electrically connected with Programmable Logic Controller after connecting successively, is provided with unit rotor tooth interblock spacer block between another unit rotor tooth block of the unit rotor tooth block in the first group rotor coil groups and the second group rotor coil groups.
The lateral surface of the electric motor internal stator formed after ring-shaped silicon steel sheet laminates is provided with 3 groups of stator excitation groups, the medial surface of motor outer rotor is provided with 3 group rotor coil groups, and the rotor coil group that the medial surface of motor outer rotor is arranged is arranges corresponding with the stator excitation group arranged on the lateral surface of electric motor internal stator.
The present invention controls the stator excitation of motor by grouping, achieve motor starting and effective excitation of economical rationality in the stage of normal operation, improve the power factor of motor, be particularly suitable for the AC driven motor that those need heavy load starting and long period low-speed heave-load to run.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the electric connection structure schematic diagram between internal stator of the present invention and Programmable Logic Controller 10;
Fig. 3 is the structural representation of unit stator pole shoes of the present invention;
Fig. 4 is the cutaway view after internal stator of the present invention is cut open along motor center axis;
Fig. 5 is the cutaway view after external rotor of the present invention is cut open along motor center axis.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail:
A kind of internal stator type alternating current machine of the excitation con-trol that divides into groups, comprise electric motor internal stator 1 and motor outer rotor 2, electric motor internal stator 1 is overrided to form by ring-shaped silicon steel sheet, the lateral surface of the electric motor internal stator formed after ring-shaped silicon steel sheet laminates is provided with the stator pole shoes elongated slot 3 that six vertical sections are swallowtail shape at equal intervals radian mutually in parallel with each other, the waist of the I-shaped pole shoe 4 of stator is provided with pole shoe stator winding coil 5, the I-shaped pole shoe 4 of stator and the pole shoe stator winding coil 5 component units stator pole shoes on it, unit stator pole shoes is plugged in stator pole shoes elongated slot 3 by the swallow shape afterbody activity of the I-shaped pole shoe 4 of stator, a unit stator pole shoes is all plugged with in six stator pole shoes elongated slots on the same vertical section of electric motor internal stator 1, these six unit stator pole shoes form first group of stator excitation group, pole shoe stator winding coil in first group of stator excitation group on two unit stator pole shoes is diametrically electrically connected with Programmable Logic Controller 10 after series connection, also another unit stator pole shoes is all plugged with in six stator pole shoes elongated slots on another same vertical section of electric motor internal stator 1 first group of stator excitation group side, these six another unit stator pole shoes form second group of stator excitation group, pole shoe stator winding coil in second group of stator excitation group on two unit stator pole shoes diametrically is also electrically connected with Programmable Logic Controller 10 after series connection, unit stator pole shoes spacer block 6 is provided with between another unit stator pole shoes of unit stator pole shoes in first group of stator excitation group and second group of stator excitation group.
The medial surface of motor outer rotor 2 is provided with the rotor tooth block length groove 7 that four vertical sections are swallowtail shape at equal intervals along the inner periphery of rotor silicon steel sheet radian mutually in parallel with each other, the waist of the I-shaped tooth block 8 of rotor is provided with tooth block rotor winding coil, the I-shaped tooth block 8 of rotor and the tooth block rotor winding coil component units rotor tooth block on it, unit rotor tooth block is plugged in rotor tooth block length groove 7 by the swallow shape afterbody activity of the I-shaped tooth block 8 of rotor, a unit rotor tooth block is all plugged with in four rotor tooth block length grooves on the same vertical section of motor outer rotor 2, these four unit rotor tooth blocks form the first group rotor coil groups, tooth block rotor winding coil on four unit rotor tooth blocks in first group rotor coil groups is electrically connected with Programmable Logic Controller 10 after connecting successively, four rotor tooth block length grooves 7 on another same vertical section of the motor outer rotor 2 of the first group rotor coil groups side are also all plugged with another unit rotor tooth block, these four another unit rotor tooth blocks form the second group rotor coil groups, tooth block rotor winding coil on four in second group rotor coil groups another unit rotor tooth blocks is electrically connected with Programmable Logic Controller 10 after connecting successively, unit rotor tooth interblock spacer block 9 is provided with between another unit rotor tooth block of unit rotor tooth block in the first group rotor coil groups and the second group rotor coil groups.
The lateral surface of the electric motor internal stator formed after ring-shaped silicon steel sheet laminates is provided with 3 groups of stator excitation groups, the medial surface of motor outer rotor 2 is provided with 3 group rotor coil groups, and the rotor coil group that the medial surface of motor outer rotor 2 is arranged is arranges corresponding with the stator excitation group arranged on the lateral surface of electric motor internal stator.
The winding process of the pole shoe stator winding coil in first group of stator excitation group of the present invention on two unit stator pole shoes is diametrically: before coiling, unit stator pole shoes is classified and is labeled as and belong to A phase, B phase, C phase, each pole shoe is wound with concentratred winding, make to form a phase together with the windings in series of diametrically two on the same vertical plane of motor central axis, and be electrically connected with Programmable Logic Controller 10.So just achieve coil grouping, and the number of turn of each phase stator winding can be changed at any time.
The characteristic that the internal stator type alternating current motor dividing into groups excitation con-trol utilizes magnetic flux to close along magnetic resistance minimal path, when electric current flows through stator winding, stator winding produces a vector
magnetic field, this magnetic field can rotate an angle by rotor driven, makes the pair of magnetic field direction of rotor consistent with the magnetic direction of stator.When the Vector Magnetic Field of stator rotates an angle, rotor is also along with this magnetic field turns an angle.And controlled output speed, the torque of motor by the number of turn and the method such as the energising number of control packet coil, the frequency of electrical current changing stator winding, thus reach the object of Direct driver load.Ohm's law according to magnetic circuit: F=Ni, in formula, F is magnetomotive force, and N is coil turn, and i is size of current.Can draw from formula, by changing the number of turn N of coil, can change the magnetomotive force F of magnetic circuit, magnetic flux also changes thereupon, and then produces corresponding torque.In the internal stator type alternating current machine of grouping excitation con-trol, owing to being provided with the stator excitation group of multicomponent group control on the medial surface of motor internal stator along motor centerline direction, according to different loads, sent instruction to control the group number of energising stator excitation group by Programmable Logic Controller 10.Specifically, when load is in start-up course, because required detent torque is larger, motor stator winding should be made to be operated in the situation of maximum number of turn, namely all stator excitation groups are all energized to realize Direct driver load, when Programmable Logic Controller 10 detects that load is in steady operational status, in order to avoid motor is now in light condition, motor stator winding should be made to be operated in the situation of the less number of turn, and the energising number namely by reducing stator excitation group number realizes energy-conservation.
Claims (3)
1. the internal stator type alternating current machine of the excitation con-trol that divides into groups, comprise electric motor internal stator (1) and motor outer rotor (2), it is characterized in that, electric motor internal stator (1) is overrided to form by ring-shaped silicon steel sheet, the lateral surface of the electric motor internal stator formed after ring-shaped silicon steel sheet laminates is provided with the stator pole shoes elongated slot (3) that six vertical sections are swallowtail shape at equal intervals radian mutually in parallel with each other, the waist of the I-shaped pole shoe of stator (4) is provided with pole shoe stator winding coil (5), the I-shaped pole shoe of stator (4) and pole shoe stator winding coil (5) the component units stator pole shoes on it, unit stator pole shoes is plugged in stator pole shoes elongated slot (3) by the swallow shape afterbody activity of the I-shaped pole shoe of stator (4), a unit stator pole shoes is all plugged with in six stator pole shoes elongated slots on the same vertical section of electric motor internal stator (1), these six unit stator pole shoes form first group of stator excitation group, pole shoe stator winding coil in first group of stator excitation group on two unit stator pole shoes is diametrically electrically connected with Programmable Logic Controller (10) after series connection, also another unit stator pole shoes is all plugged with in six stator pole shoes elongated slots on another same vertical section of the electric motor internal stator (1) of first group of stator excitation group side, these six another unit stator pole shoes form second group of stator excitation group, pole shoe stator winding coil in second group of stator excitation group on two unit stator pole shoes diametrically is also electrically connected with Programmable Logic Controller (10) after series connection, unit stator pole shoes spacer block (6) is provided with between another unit stator pole shoes of unit stator pole shoes in first group of stator excitation group and second group of stator excitation group.
2. the internal stator type alternating current machine of a kind of excitation con-trol that divides into groups according to claim 1, it is characterized in that, the medial surface of motor outer rotor (2) is provided with the rotor tooth block length groove (7) that four vertical sections are swallowtail shape at equal intervals along the inner periphery of rotor silicon steel sheet radian mutually in parallel with each other, the waist of the I-shaped tooth block (8) of rotor is provided with tooth block rotor winding coil, the I-shaped tooth block (8) of rotor and the tooth block rotor winding coil component units rotor tooth block on it, unit rotor tooth block is plugged in rotor tooth block length groove (7) by the swallow shape afterbody activity of the I-shaped tooth block (8) of rotor, a unit rotor tooth block is all plugged with in four rotor tooth block length grooves on the same vertical section of motor outer rotor (2), these four unit rotor tooth blocks form the first group rotor coil groups, tooth block rotor winding coil on four unit rotor tooth blocks in first group rotor coil groups is electrically connected with Programmable Logic Controller (10) after connecting successively, four rotor tooth block length grooves (7) on another same vertical section of the motor outer rotor (2) of the first group rotor coil groups side are also all plugged with another unit rotor tooth block, these four another unit rotor tooth blocks form the second group rotor coil groups, tooth block rotor winding coil on four in second group rotor coil groups another unit rotor tooth blocks is electrically connected with Programmable Logic Controller (10) after connecting successively, unit rotor tooth interblock spacer block (9) is provided with between another unit rotor tooth block of unit rotor tooth block in the first group rotor coil groups and the second group rotor coil groups.
3. the internal stator type alternating current machine of a kind of excitation con-trol that divides into groups according to claim 2, it is characterized in that, the lateral surface of the electric motor internal stator formed after ring-shaped silicon steel sheet laminates is provided with 3 groups of stator excitation groups, the medial surface of motor outer rotor (2) is provided with 3 group rotor coil groups, and the rotor coil group that the medial surface of motor outer rotor (2) is arranged is arranges corresponding with the stator excitation group arranged on the lateral surface of electric motor internal stator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410456125.5A CN104242492B (en) | 2014-09-10 | 2014-09-10 | The internal stator type alternating current generator of packet excitation con-trol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410456125.5A CN104242492B (en) | 2014-09-10 | 2014-09-10 | The internal stator type alternating current generator of packet excitation con-trol |
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| Publication Number | Publication Date |
|---|---|
| CN104242492A true CN104242492A (en) | 2014-12-24 |
| CN104242492B CN104242492B (en) | 2016-09-14 |
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| CN201410456125.5A Active CN104242492B (en) | 2014-09-10 | 2014-09-10 | The internal stator type alternating current generator of packet excitation con-trol |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101707428A (en) * | 2009-11-06 | 2010-05-12 | 张世清 | Three-phase single-section/double-section multiple-pole switching reluctance motor |
| US20100156208A1 (en) * | 2008-06-26 | 2010-06-24 | Zf Friedrichshafen Ag | Stator for an electric machine |
| CN103647360A (en) * | 2013-07-03 | 2014-03-19 | 锦州汉拿电机有限公司 | Motor outer stator and manufacturing process thereof |
| CN103855815A (en) * | 2012-11-30 | 2014-06-11 | 中山大洋电机股份有限公司 | Brushless external rotor motor stator and manufacturing method thereof |
| CN204179762U (en) * | 2014-09-10 | 2015-02-25 | 太原科技大学 | The internal stator type alternating current machine of grouping excitation con-trol |
-
2014
- 2014-09-10 CN CN201410456125.5A patent/CN104242492B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100156208A1 (en) * | 2008-06-26 | 2010-06-24 | Zf Friedrichshafen Ag | Stator for an electric machine |
| CN101707428A (en) * | 2009-11-06 | 2010-05-12 | 张世清 | Three-phase single-section/double-section multiple-pole switching reluctance motor |
| CN103855815A (en) * | 2012-11-30 | 2014-06-11 | 中山大洋电机股份有限公司 | Brushless external rotor motor stator and manufacturing method thereof |
| CN103647360A (en) * | 2013-07-03 | 2014-03-19 | 锦州汉拿电机有限公司 | Motor outer stator and manufacturing process thereof |
| CN204179762U (en) * | 2014-09-10 | 2015-02-25 | 太原科技大学 | The internal stator type alternating current machine of grouping excitation con-trol |
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| CN104242492B (en) | 2016-09-14 |
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Inventor after: Meng Wenjun Inventor after: Yuan Yuan Inventor after: Niu Xuemei Inventor after: Sun Xiaoxia Inventor after: Zhang Liyong Inventor before: Meng Wenjun Inventor before: Yuan Yuan Inventor before: Sun Xiaoxia Inventor before: Zhang Liyong |
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Free format text: CORRECT: INVENTOR; FROM: MENG WENJUN YUAN YUAN SUN XIAOXIA ZHANG LIYONG TO: MENG WENJUN YUAN YUAN NIU XUEMEI SUN XIAOXIA ZHANG LIYONG |
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