CN106972729A - Circular Winding magnetic field modulation linear electric motors - Google Patents
Circular Winding magnetic field modulation linear electric motors Download PDFInfo
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- H—ELECTRICITY
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Abstract
环形绕组磁场调制直线电机,属于电机领域。解决了传统直线永磁电机绕组的端部长和绕组的绕线方式导致的材料浪费、绕组间绝缘工艺复杂、电机的推力波动大和效率低的问题。本发明包括初级和次级,初级和次级间存在间隙,采用初、次级极槽配合及环形绕组,利用不均匀气隙磁导起到“变极”的作用,初级绕组磁动势与气隙磁导相互作用,产生与次级永磁体极数相同的磁场,然后两磁场相互作用产生恒定推力,进而突破了传统直线永磁同步电机初、次级极数必须相同的限制。次级永磁体极对数P、初级每边槽数Q,以及初级绕组基波磁动势极对数S需满足以下关系:P=Q±S。本发明适合用于低速、高加速度、大输出推力等场合。
The utility model relates to a ring winding magnetic field modulation linear motor, which belongs to the field of motors. It solves the problems of waste of materials caused by the length of the end of the winding of the traditional linear permanent magnet motor and the winding method of the winding, the complicated insulation process between the windings, the large fluctuation of the thrust of the motor, and the low efficiency. The invention includes primary and secondary, there is a gap between the primary and secondary, the primary and secondary pole slots are matched and the ring winding is used, and the non-uniform air gap magnetic conductance is used to play the role of "changing poles", and the magnetomotive force of the primary winding and the The air gap permeance interacts to generate a magnetic field with the same number of poles as the secondary permanent magnet, and then the two magnetic fields interact to generate a constant thrust, which breaks through the limitation that the primary and secondary poles of the traditional linear permanent magnet synchronous motor must be the same. The number of pole pairs P of the secondary permanent magnet, the number of slots on each side of the primary side Q, and the number of pole pairs S of the fundamental magnetomotive force of the primary winding need to satisfy the following relationship: P=Q±S. The invention is suitable for occasions such as low speed, high acceleration, and large output thrust.
Description
技术领域technical field
本发明属于电机领域。The invention belongs to the field of motors.
背景技术Background technique
传统的单边平板形三相直线永磁同步电机的电枢铁心齿距τt与永磁体的极距τp之间满足关系3τt=τp,每个槽中嵌放一个线圈边,线圈节距与极距相等,这种绕组结构称为整数槽单层绕组。该电机的绕组如图1所示,A相绕组的线圈在第一个槽和第四个槽内缠绕,同时跨过了第二个槽和第三个槽,C相绕组的线圈是在第二个槽和第五个槽内缠绕,同时跨过了第三个槽和第四个槽,以此类推。这种类型绕组存在的主要问题在于:各相绕组线圈露在铁心齿外的端部比较长,并且各相绕组线圈相互交叉,这样不但浪费线圈、增加铜耗,还使各相绕组间的绝缘工艺变得复杂,增加了制造成本。同时,由于绕组为单层整距绕组,绕组的磁动势与电动势谐波成分大,电机的推力波动大、效率低,而且由于绕组的端部长,次级的横向支撑跨度大,增大了支撑难度。The relationship 3τ t = τ p is satisfied between the armature core tooth pitch τ t of the traditional unilateral flat three-phase linear permanent magnet synchronous motor and the permanent magnet pole pitch τ p , and a coil side is embedded in each slot, and the coil The pitch is equal to the pole pitch, and this winding structure is called integer slot single-layer winding. The winding of the motor is shown in Figure 1. The coil of the A-phase winding is wound in the first slot and the fourth slot, while crossing the second and third slots. The coil of the C-phase winding is in the first slot. The second slot and the fifth slot are wound, while the third slot and the fourth slot are straddled, and so on. The main problem of this type of winding is that the ends of the winding coils of each phase exposed outside the core teeth are relatively long, and the winding coils of each phase cross each other, which not only wastes the coils, increases copper loss, but also makes the insulation between the windings of each phase The process becomes complicated, increasing the manufacturing cost. At the same time, because the winding is a single-layer full-pitch winding, the magnetomotive force and electromotive force harmonic components of the winding are large, the thrust fluctuation of the motor is large, and the efficiency is low. Moreover, because the end of the winding is long, the secondary lateral support span is large, which increases the Support difficulty.
发明内容Contents of the invention
本发明是为了解决传统直线永磁电机绕组的端部长和绕组的绕线方式导致的材料浪费、绕组间绝缘工艺复杂、电机的推力波动大和效率低的问题,本发明提供了一种环形绕组磁场调制直线电机,该电机的实现形式具体如下:The present invention aims to solve the problems of the end length of the winding of the traditional linear permanent magnet motor and the waste of materials caused by the winding mode of the winding, the complicated insulation process between the windings, the large fluctuation of the thrust of the motor and the low efficiency. The present invention provides a ring winding magnetic field Modulate the linear motor, the implementation form of the motor is as follows:
方案一:Option One:
环形绕组磁场调制直线电机,它包括初级和次级,且二者间存在气隙,Toroidal winding field modulated linear motor, which consists of a primary and a secondary with an air gap between them,
次级为双边结构,且初级设置在双边之间,双边结构的气隙侧上设有次级永磁体,次级永磁体的充磁方向与运动方向垂直,且单边上相邻的两个次级永磁体的充磁方向相反,双边对应位置的次级永磁体的充磁方向相同,The secondary is a double-sided structure, and the primary is set between the two sides. A secondary permanent magnet is arranged on the air gap side of the double-sided structure. The magnetization direction of the secondary permanent magnet is perpendicular to the direction of motion, and the two adjacent The magnetization directions of the secondary permanent magnets are opposite, and the magnetization directions of the secondary permanent magnets at the corresponding positions on both sides are the same.
初级包括初级铁心和初级绕组,在初级铁心的左、右两个气隙侧沿纵向开初级槽,在槽内设置初级绕组,所述初级绕组采用环形绕组实现,并为三相对称绕组形式;The primary includes a primary iron core and a primary winding. Primary slots are longitudinally opened on the left and right air gap sides of the primary iron core, and a primary winding is arranged in the slot. The primary winding is realized by a ring winding and is in the form of a three-phase symmetrical winding;
单边次级上的次级永磁体的极对数均为P,初级铁心的左、右两个气隙侧中,每个气隙侧槽数为Q,The number of pole pairs of the secondary permanent magnets on the unilateral secondary is P, and the number of slots on each air gap side is Q in the left and right air gap sides of the primary core.
初级绕组的基波磁动势极对数为S,且P、Q和S间满足以下关系:The number of pole pairs of the fundamental magnetomotive force of the primary winding is S, and the relationship between P, Q and S satisfies the following relationship:
P=Q±S,P=Q±S,
2Pτp=Qτt,2Pτ p = Qτ t ,
Q=2mkq,Q=2mkq,
其中,τp为次级永磁体极距,τt为初级铁心齿距,m为初级绕组相数,k为正整数,q为初级绕组每极每相槽数。Among them, τ p is the pole pitch of the secondary permanent magnet, τ t is the tooth pitch of the primary iron core, m is the phase number of the primary winding, k is a positive integer, and q is the number of slots per pole and phase of the primary winding.
方案二:Option II:
环形绕组磁场调制直线电机,它包括初级和次级,且二者间存在气隙;Toroidal-winding field-modulated linear motors, which consist of a primary and a secondary with an air gap between them;
次级为“凹”字形三边结构,且初级设置在“凹”字形三边结构的凹槽内,“凹”字形三边结构的气隙侧上设有次级永磁体,次级永磁体的充磁方向与运动方向垂直,且单边上相邻的两个次级永磁体的充磁方向相反,三边上对应位置的次级永磁体的充磁方向相同;The secondary is a "concave" three-sided structure, and the primary is set in the groove of the "concave" three-sided structure. A secondary permanent magnet is arranged on the air gap side of the "concave" three-sided structure. The secondary permanent magnet The magnetization direction is perpendicular to the direction of motion, and the magnetization directions of the two adjacent secondary permanent magnets on one side are opposite, and the magnetization directions of the corresponding positions of the secondary permanent magnets on the three sides are the same;
初级包括初级铁心和初级绕组,在初级铁心的左、右两个气隙侧沿纵向开初级槽,在初级铁心的下方气隙侧沿横向开初级槽,三个气隙侧的槽连通来共同设置初级绕组,所述初级绕组采用环形绕组实现,并为三相对称绕组形式;The primary includes the primary iron core and the primary winding. The primary slots are longitudinally opened on the left and right air gap sides of the primary iron core, and the primary slots are opened transversely on the lower air gap side of the primary iron core. The slots on the three air gap sides are connected to a common A primary winding is provided, and the primary winding is realized by a ring winding, and is in the form of a three-phase symmetrical winding;
单边次级永磁体的极对数均为P,The number of pole pairs of the unilateral secondary permanent magnet is P,
初级铁心的每个气隙侧槽数为Q,The number of slots on each air gap side of the primary core is Q,
初级绕组的基波磁动势极对数为S,且P、Q和S间满足以下关系:The number of pole pairs of the fundamental magnetomotive force of the primary winding is S, and the relationship between P, Q and S satisfies the following relationship:
P=Q±S,P=Q±S,
2Pτp=Qτt,2Pτ p = Qτt,
Q=2mkq,Q=2mkq,
其中,τp为次级永磁体极距,τt为初级铁心齿距,m为初级绕组相数,k为正整数,q为初级绕组每极每相槽数。Among them, τ p is the pole pitch of the secondary permanent magnet, τ t is the tooth pitch of the primary iron core, m is the phase number of the primary winding, k is a positive integer, and q is the number of slots per pole and phase of the primary winding.
方案三:third solution:
环形绕组磁场调制直线电机,它包括初级和次级,且二者间存在气隙;Toroidal-winding field-modulated linear motors, which consist of a primary and a secondary with an air gap between them;
初级包括主初级铁心、初级绕组和两个辅助初级铁心;两个辅助初级铁心位于主初级铁心的两侧,在主初级铁心的左、右两个气隙侧沿纵向开初级槽,在槽内设置初级绕组,所述初级绕组采用环形绕组实现,并为三相对称绕组形式;The primary includes the main primary core, primary winding and two auxiliary primary cores; the two auxiliary primary cores are located on both sides of the main primary core, and the primary slots are longitudinally opened on the left and right air gap sides of the main primary core. A primary winding is provided, and the primary winding is realized by a ring winding, and is in the form of a three-phase symmetrical winding;
次级为双边结构,且双边分别位于主初级铁心与两个辅助初级铁心之间,次级的每个边上嵌入有次级永磁体,所述次级永磁体同时面向主初级铁心与辅助初级铁心,次级永磁体的充磁方向与运动方向垂直,且每个边上相邻的两个次级永磁体的充磁方向相反,双边对应位置的次级永磁体的充磁方向相同;The secondary is a double-sided structure, and the two sides are respectively located between the main primary core and the two auxiliary primary cores. A secondary permanent magnet is embedded on each side of the secondary, and the secondary permanent magnet faces the main primary core and the auxiliary primary core at the same time. Iron core, the magnetization direction of the secondary permanent magnet is perpendicular to the direction of motion, and the magnetization direction of the two adjacent secondary permanent magnets on each side is opposite, and the magnetization direction of the secondary permanent magnets at the corresponding positions on both sides is the same;
辅助初级铁心为方形块体,且辅助初级铁心的气隙侧沿纵向开初级槽,且该初级槽与主初级铁心气隙侧所开的初级槽一致;The auxiliary primary core is a square block, and the air gap side of the auxiliary primary core is longitudinally opened with primary slots, and the primary slots are consistent with the primary slots opened on the air gap side of the main primary core;
单边次级上的次级永磁体的极对数均为P,The pole pairs of the secondary permanent magnets on the unilateral secondary are all P,
主初级铁心的每个气隙侧槽数为Q,The number of side slots for each air gap of the main primary core is Q,
初级绕组的基波磁动势极对数为S,且P、Q和S间满足以下关系:The number of pole pairs of the fundamental magnetomotive force of the primary winding is S, and the relationship between P, Q and S satisfies the following relationship:
P=Q±S,P=Q±S,
2Pτp=Qτt,2Pτ p = Qτt,
Q=2mkq,Q=2mkq,
其中,τp为次级永磁体极距,τt为初级铁心齿距,m为初级绕组相数,k为正整数,q为初级绕组每极每相槽数。Among them, τ p is the pole pitch of the secondary permanent magnet, τ t is the tooth pitch of the primary iron core, m is the phase number of the primary winding, k is a positive integer, and q is the number of slots per pole and phase of the primary winding.
所述的辅助初级铁心的气隙侧所开的初级槽中嵌入初级绕组,所述初级绕组采用环形绕组实现,并为三相对称绕组形式。A primary winding is embedded in the primary slot opened on the air gap side of the auxiliary primary core, and the primary winding is realized by ring winding in a three-phase symmetrical winding form.
方案四:Option four:
环形绕组磁场调制直线电机,它包括初级和次级,次级位于初级的内部,且二者同轴、且存在气隙;Ring winding magnetic field modulation linear motor, which includes a primary and a secondary, the secondary is located inside the primary, and the two are coaxial and have an air gap;
初级包括初级铁心和初级绕组,初级铁心为圆筒形结构,在初级铁心的内表面沿圆周方向开初级槽,各初级槽沿运动方向均匀排列,且在初级槽内嵌放初级绕组,所述初级绕组采用环形绕组实现,并为三相对称绕组形式;The primary includes a primary iron core and a primary winding. The primary iron core is a cylindrical structure. Primary slots are opened along the circumferential direction on the inner surface of the primary iron core. The primary slots are evenly arranged along the direction of motion, and the primary winding is embedded in the primary slot. The primary winding is realized by ring winding, and it is a three-phase symmetrical winding form;
次级为圆柱或圆筒形结构,其外表面粘贴有圆环形次级永磁体,圆环形次级永磁体的充磁方向与运动方向垂直,且相邻的两个圆环形次级永磁体的充磁方向相反,The secondary is a cylindrical or cylindrical structure, and its outer surface is pasted with a ring-shaped secondary permanent magnet. The magnetization direction of the ring-shaped secondary permanent magnet is perpendicular to the direction of motion, and the adjacent two ring-shaped secondary The magnetization direction of the permanent magnet is opposite,
圆环形次级永磁体的极对数为P,The number of pole pairs of the annular secondary permanent magnet is P,
初级铁心气隙侧的槽数为Q,The number of slots on the air gap side of the primary core is Q,
初级绕组的基波磁动势极对数为S,且P、Q和S间满足以下关系:The number of pole pairs of the fundamental magnetomotive force of the primary winding is S, and the relationship between P, Q and S satisfies the following relationship:
P=Q±S,P=Q±S,
2Pτp=Qτt,2Pτ p = Qτt,
Q=2mkq,Q=2mkq,
其中,τp为次级永磁体极距,τt为初级铁心齿距,m为初级绕组相数,k为正整数,q为初级绕组每极每相槽数。Among them, τ p is the pole pitch of the secondary permanent magnet, τ t is the tooth pitch of the primary iron core, m is the phase number of the primary winding, k is a positive integer, and q is the number of slots per pole and phase of the primary winding.
方案五:Option five:
环形绕组磁场调制直线电机,它包括初级和次级,初级位于次级的内部,二者同轴、且存在气隙;Ring winding magnetic field modulation linear motor, which includes primary and secondary, the primary is located inside the secondary, the two are coaxial, and there is an air gap;
初级包括初级铁心和初级绕组,初级铁心为圆柱或圆筒形结构,初级铁心的外表面沿圆周方向开初级槽,各初级槽沿运动方向均匀排列,且初级槽中嵌放初级绕组,所述初级绕组采用环形绕组实现,并为三相对称绕组形式;The primary includes a primary iron core and a primary winding. The primary iron core is a cylindrical or cylindrical structure. The outer surface of the primary iron core is provided with primary slots along the circumferential direction. The primary slots are evenly arranged along the direction of motion, and the primary windings are embedded in the primary slots. The primary winding is realized by ring winding, and it is a three-phase symmetrical winding form;
次级为圆筒形结构,次级的内表面粘贴有圆环形次级永磁体,圆环形次级永磁体的充磁方向与运动方向垂直,且相邻的两个圆环形次级永磁体的充磁方向相反;The secondary is a cylindrical structure, and the inner surface of the secondary is pasted with a ring-shaped secondary permanent magnet. The magnetization direction of the ring-shaped secondary permanent magnet is perpendicular to the direction of motion, and the adjacent two ring-shaped secondary The magnetization direction of the permanent magnet is opposite;
圆环形次级永磁体的极对数为P,The number of pole pairs of the annular secondary permanent magnet is P,
初级铁心外表面的槽数为Q,The number of slots on the outer surface of the primary core is Q,
初级绕组的基波磁动势极对数为S,且P、Q和S间满足以下关系:The number of pole pairs of the fundamental magnetomotive force of the primary winding is S, and the relationship between P, Q and S satisfies the following relationship:
P=Q±S,P=Q±S,
2Pτp=Qτt,2Pτ p = Qτ t ,
Q=2mkq,Q=2mkq,
其中,τp为次级永磁体极距,τt为初级铁心齿距,m为初级绕组相数,k为正整数,q为初级绕组每极每相槽数。Among them, τ p is the pole pitch of the secondary permanent magnet, τ t is the tooth pitch of the primary iron core, m is the phase number of the primary winding, k is a positive integer, and q is the number of slots per pole and phase of the primary winding.
方案六:Option six:
环形绕组磁场调制直线电机,它包括初级和次级,初级位于次级的上方,且二者间存在气隙;Toroidal winding magnetic field modulated linear motor, which includes a primary and a secondary, with the primary positioned above the secondary with an air gap between them;
初级包括初级铁心和初级绕组,在初级铁心的气隙侧沿横向开初级槽,在槽内设置初级绕组,所述初级绕组采用环形绕组实现,并为三相对称绕组形式;The primary includes a primary iron core and a primary winding. Primary slots are opened transversely on the air gap side of the primary iron core, and primary windings are arranged in the slots. The primary windings are realized by ring windings and are in the form of three-phase symmetrical windings;
次级为单边结构,且次级的气隙侧设有次级永磁体,次级永磁体的充磁方向与运动方向垂直,且相邻的两个次级永磁体的充磁方向相反;The secondary is a unilateral structure, and the air gap side of the secondary is provided with a secondary permanent magnet, the magnetization direction of the secondary permanent magnet is perpendicular to the direction of motion, and the magnetization direction of the two adjacent secondary permanent magnets is opposite;
次级永磁体的极对数为P,The number of pole pairs of the secondary permanent magnet is P,
初级铁心的气隙侧槽数为Q,The number of slots on the air gap side of the primary core is Q,
初级绕组的基波磁动势极对数为S,且P、Q和S间满足以下关系:The number of pole pairs of the fundamental magnetomotive force of the primary winding is S, and the relationship between P, Q and S satisfies the following relationship:
P=Q±S,P=Q±S,
2Pτp=Qτt,2Pτ p = Qτ t ,
Q=2mkq,Q=2mkq,
其中,τp为次级永磁体极距,τt为初级铁心齿距,m为初级绕组相数,k为正整数,q为初级绕组每极每相槽数。Among them, τ p is the pole pitch of the secondary permanent magnet, τ t is the tooth pitch of the primary iron core, m is the phase number of the primary winding, k is a positive integer, and q is the number of slots per pole and phase of the primary winding.
方案七:Option seven:
环形绕组磁场调制直线电机,它包括初级和次级,初级位于次级的上方,且二者间存在气隙;Toroidal winding magnetic field modulated linear motor, which includes a primary and a secondary, with the primary positioned above the secondary with an air gap between them;
初级包括初级铁心和初级绕组,在初级铁心的上、下表面沿横向开初级槽,且每个初级槽中嵌放一个初级绕组,所述初级绕组采用环形绕组实现,并为三相对称绕组形式;The primary includes a primary iron core and a primary winding. Primary slots are opened transversely on the upper and lower surfaces of the primary iron core, and a primary winding is embedded in each primary slot. The primary winding is realized by a ring winding and is a three-phase symmetrical winding form. ;
次级为单边结构,且次级的气隙侧设有次级永磁体,次级永磁体的充磁方向与运动方向垂直,且相邻的两个次级永磁体的充磁方向相反;The secondary is a unilateral structure, and the air gap side of the secondary is provided with a secondary permanent magnet, the magnetization direction of the secondary permanent magnet is perpendicular to the direction of motion, and the magnetization direction of the two adjacent secondary permanent magnets is opposite;
次级永磁体的极对数为P,The number of pole pairs of the secondary permanent magnet is P,
初级铁心的气隙侧槽数为Q,The number of slots on the air gap side of the primary core is Q,
初级绕组的基波磁动势极对数为S,且P、Q和S间满足以下关系:The number of pole pairs of the fundamental magnetomotive force of the primary winding is S, and the relationship between P, Q and S satisfies the following relationship:
P=Q±S,P=Q±S,
2Pτp=Qτt,2Pτ p = Qτ t ,
Q=2mkq,Q=2mkq,
其中,τp为次级永磁体极距,τt为初级铁心齿距,m为初级绕组相数,k为正整数,q为初级绕组每极每相槽数。Among them, τ p is the pole pitch of the secondary permanent magnet, τ t is the tooth pitch of the primary iron core, m is the phase number of the primary winding, k is a positive integer, and q is the number of slots per pole and phase of the primary winding.
原理分析:通过采用特定的初、次级极槽配合及环形绕组,利用不均匀气隙磁导起到“变极”的作用,初级绕组磁动势与气隙磁导相互作用,产生与次级永磁体极数相同的磁场,然后两磁场相互作用产生恒定推力,进而突破了传统直线永磁同步电机初、次级极数必须相同的限制。既减小了绕组端部长度与损耗,提高了电机效率,又减小了推力波动,降低了电机振动与噪声,同时电机的结构简单、绝缘容易、制造成本低、可靠性高,适合用于低速、高加速度、大输出推力等场合。Principle analysis: By adopting specific primary and secondary pole-slot coordination and ring windings, the uneven air gap permeance is used to play the role of "changing poles". The magnetomotive force of the primary winding interacts with the air gap permeance to generate a The magnetic field with the same number of poles of the primary permanent magnet, and then the two magnetic fields interact to generate a constant thrust, thus breaking through the limitation that the number of primary and secondary poles of the traditional linear permanent magnet synchronous motor must be the same. It not only reduces the length and loss of the winding end, improves the efficiency of the motor, but also reduces the thrust fluctuation, reduces the vibration and noise of the motor, and at the same time, the motor has a simple structure, easy insulation, low manufacturing cost, and high reliability. It is suitable for use in Low speed, high acceleration, large output thrust and other occasions.
本发明可以提高直线电机推力密度,减小推力波动,降低电机振动与噪声,同时电机的结构简单、制造成本低、可靠性高,适合用于低速、高加速度、大输出推力等场合。The invention can increase the thrust density of the linear motor, reduce thrust fluctuation, reduce motor vibration and noise, and meanwhile the motor has simple structure, low manufacturing cost and high reliability, and is suitable for occasions such as low speed, high acceleration and large output thrust.
附图说明Description of drawings
图1为背景技术中所述的平板型永磁直线同步电机的绕组原理示意图;其中,X表示A相绕组的反向、Y表示B相绕组的反向、Z表示C相绕组的反向;Fig. 1 is the schematic diagram of the winding principle of the flat-plate permanent magnet linear synchronous motor described in the background technology; Wherein, X represents the reverse of A-phase winding, Y represents the reverse of B-phase winding, Z represents the reverse of C-phase winding;
图2为具体实施方式一所述的环形绕组磁场调制直线电机的三维结构示意图;Fig. 2 is a three-dimensional structural schematic diagram of the annular winding magnetic field modulation linear motor described in Embodiment 1;
图3为图2所示电机的主视图;Fig. 3 is the front view of the motor shown in Fig. 2;
图4为图3在B-B方向的剖视图;Fig. 4 is the sectional view of Fig. 3 in B-B direction;
图5为图3在A-A方向的剖视图。Fig. 5 is a cross-sectional view of Fig. 3 along the direction A-A.
图6为具体实施方式二所述的环形绕组磁场调制直线电机的三维结构示意图;6 is a three-dimensional structural schematic diagram of the annular winding magnetic field modulation linear motor described in the second embodiment;
图7为图6的俯视图;Figure 7 is a top view of Figure 6;
图8为图6的侧视图;Figure 8 is a side view of Figure 6;
图9为具体实施方式三所述的环形绕组磁场调制直线电机的三维结构示意图;Fig. 9 is a three-dimensional structural schematic diagram of the annular winding magnetic field modulation linear motor described in the third embodiment;
图10为图9的俯视图;Figure 10 is a top view of Figure 9;
图11为图9的侧视图;Figure 11 is a side view of Figure 9;
图12为具体实施方式四所述的环形绕组磁场调制直线电机的三维结构示意图;Fig. 12 is a three-dimensional structural schematic diagram of the annular winding magnetic field modulation linear motor described in Embodiment 4;
图13为图12的俯视图;Figure 13 is a top view of Figure 12;
图14为图12的侧视图;Figure 14 is a side view of Figure 12;
图15为具体实施方式五所述的环形绕组磁场调制直线电机的三维结构示意图;Fig. 15 is a three-dimensional structural schematic diagram of the annular winding magnetic field modulation linear motor described in Embodiment 5;
图16为图15的侧视图;Figure 16 is a side view of Figure 15;
图17为图15的主剖视图;Fig. 17 is a main sectional view of Fig. 15;
图18为具体实施方式六所述的环形绕组磁场调制直线电机的次级的结构示意图;Fig. 18 is a schematic structural diagram of the secondary of the annular winding magnetic field modulation linear motor described in Embodiment 6;
图19为具体实施方式六所述的环形绕组磁场调制直线电机的初级和次级间的相对位置关系图;Fig. 19 is a diagram of the relative position relationship between the primary and the secondary of the annular winding magnetic field modulation linear motor described in Embodiment 6;
图20为图19在A-A方向的剖视图;Figure 20 is a cross-sectional view of Figure 19 in the A-A direction;
图21为具体实施方式七述的环形绕组磁场调制直线电机的三维结构示意图;Fig. 21 is a three-dimensional structural schematic diagram of the annular winding magnetic field modulation linear motor described in the seventh embodiment;
图22为图21的主视图;Fig. 22 is the front view of Fig. 21;
图23为图21的侧视图;Figure 23 is a side view of Figure 21;
图24为具体实施方式八述的环形绕组磁场调制直线电机的三维结构示意图;Fig. 24 is a three-dimensional structural schematic diagram of the annular winding magnetic field modulation linear motor described in Embodiment 8;
图25为图24的主视图;Fig. 25 is the front view of Fig. 24;
图26为图24的仰视图;Figure 26 is a bottom view of Figure 24;
图27为图24的侧视图。FIG. 27 is a side view of FIG. 24 .
具体实施方式detailed description
具体实施方式一:参见图2至图5说明本实施方式,本实施方式所述的环形绕组磁场调制直线电机,它包括初级1和次级2,且二者间存在气隙,Specific embodiment 1: Refer to Fig. 2 to Fig. 5 to illustrate this embodiment, the annular winding magnetic field modulation linear motor described in this embodiment includes a primary 1 and a secondary 2, and there is an air gap between them,
次级2为双边结构,且初级1设置在双边之间,双边结构的气隙侧上设有次级永磁体2-1,次级永磁体2-1的充磁方向与运动方向垂直,且单边上相邻的两个次级永磁体2-1的充磁方向相反,双边对应位置的次级永磁体2-1的充磁方向相同,The secondary 2 is a double-sided structure, and the primary 1 is arranged between the two sides, and a secondary permanent magnet 2-1 is arranged on the air gap side of the bilateral structure, and the magnetization direction of the secondary permanent magnet 2-1 is perpendicular to the direction of motion, and The magnetization directions of the two adjacent secondary permanent magnets 2-1 on one side are opposite, and the magnetization directions of the secondary permanent magnets 2-1 corresponding to the two sides are the same,
初级1包括初级铁心1-1和初级绕组1-2,在初级铁心1-1的左、右两个气隙侧沿纵向开初级槽,在槽内设置初级绕组1-2,所述初级绕组1-2采用环形绕组实现,并为三相对称绕组形式;The primary 1 includes a primary iron core 1-1 and a primary winding 1-2. Primary slots are longitudinally opened on the left and right air gap sides of the primary iron core 1-1, and the primary winding 1-2 is arranged in the slot. The primary winding 1-2 is realized by ring winding, and is a three-phase symmetrical winding form;
单边次级2上的次级永磁体2-1的极对数均为P,初级铁心1-1的左、右两个气隙侧中,每个气隙侧槽数为Q,The number of pole pairs of the secondary permanent magnet 2-1 on the unilateral secondary 2 is P, and in the left and right air gap sides of the primary core 1-1, the number of slots on each air gap side is Q,
初级绕组1-2的基波磁动势极对数为S,且P、Q和S间满足以下关系:The number of pole pairs of the fundamental magnetomotive force of the primary winding 1-2 is S, and the relationship between P, Q and S satisfies the following relationship:
P=Q±S,P=Q±S,
2Pτp=Qτt,2Pτ p = Qτ t ,
Q=2mkq,Q=2mkq,
其中,τp为次级永磁体极距,τt为初级铁心齿距,m为初级绕组相数,k为正整数,q为初级绕组每极每相槽数。Among them, τ p is the pole pitch of the secondary permanent magnet, τ t is the tooth pitch of the primary iron core, m is the phase number of the primary winding, k is a positive integer, and q is the number of slots per pole and phase of the primary winding.
本实施方式,初级铁心可以使用硅钢片叠压制成,环形绕组具有更短的端部,节省用铜量的同时具有更低的绕组温升,由于绕组之间没有重叠,互感可忽略不计,次级2为双边结构,初级铁心的一侧和绕组的一个有效边,与气隙和同侧的次级构成一个磁路,该磁路为初级-绕组-气隙-永磁体-次级-永磁体-气隙-绕组-初级,则电机有两个磁路,两部分磁路相互并联,可以实现电磁推力的叠加,在节约空间的同时增加电机的推力。In this embodiment, the primary iron core can be made of laminated silicon steel sheets, and the ring winding has a shorter end, which saves copper and has a lower winding temperature rise. Since there is no overlap between the windings, the mutual inductance is negligible. Stage 2 is a bilateral structure. One side of the primary core and one effective side of the winding form a magnetic circuit with the air gap and the secondary on the same side. The magnetic circuit is primary-winding-air gap-permanent magnet-secondary-permanent Magnet-air gap-winding-primary, the motor has two magnetic circuits, and the two parts of the magnetic circuits are connected in parallel, which can realize the superposition of electromagnetic thrust and increase the thrust of the motor while saving space.
具体实施方式二:参见图6至图8说明本实施方式,本实施方式所述的环形绕组磁场调制直线电机,它包括初级1和次级2,且二者间存在气隙;Specific Embodiment 2: Refer to Fig. 6 to Fig. 8 to illustrate this embodiment, the annular winding magnetic field modulation linear motor described in this embodiment includes a primary 1 and a secondary 2, and there is an air gap between them;
次级2为“凹”字形三边结构,且初级1设置在“凹”字形三边结构的凹槽内,“凹”字形三边结构的气隙侧上设有次级永磁体2-1,次级永磁体2-1的充磁方向与运动方向垂直,且单边上相邻的两个次级永磁体2-1的充磁方向相反,三边上对应位置的次级永磁体2-1的充磁方向相同;The secondary 2 is a "concave" three-sided structure, and the primary 1 is set in the groove of the "concave" three-sided structure, and the air gap side of the "concave" three-sided structure is provided with a secondary permanent magnet 2-1 , the magnetization direction of the secondary permanent magnet 2-1 is perpendicular to the direction of motion, and the magnetization direction of the two adjacent secondary permanent magnets 2-1 on one side is opposite, and the secondary permanent magnet 2 at the corresponding position on the three sides The magnetization direction of -1 is the same;
初级1包括初级铁心1-1和初级绕组1-2,在初级铁心1-1的左、右两个气隙侧沿纵向开初级槽,在初级铁心1-1的下方气隙侧沿横向开初级槽,三个气隙侧的槽连通来共同设置初级绕组1-2,所述初级绕组1-2采用环形绕组实现,并为三相对称绕组形式;The primary 1 includes a primary iron core 1-1 and a primary winding 1-2. Primary slots are longitudinally opened on the left and right air gap sides of the primary iron core 1-1, and transversely opened on the lower air gap side of the primary iron core 1-1. The primary slots, the three slots on the air gap side are connected to jointly set the primary winding 1-2, the primary winding 1-2 is realized by ring winding, and is in the form of a three-phase symmetrical winding;
单边次级永磁体2-1的极对数均为P,The number of pole pairs of the unilateral secondary permanent magnet 2-1 is P,
初级铁心1-1的每个气隙侧槽数为Q,The number of side slots for each air gap of the primary core 1-1 is Q,
初级绕组1-2的基波磁动势极对数为S,且P、Q和S间满足以下关系:The number of pole pairs of the fundamental magnetomotive force of the primary winding 1-2 is S, and the relationship between P, Q and S satisfies the following relationship:
P=Q±S,P=Q±S,
2Pτp=Qτt,2Pτ p = Qτt,
Q=2mkq,Q=2mkq,
其中,τp为次级永磁体极距,τt为初级铁心齿距,m为初级绕组相数,k为正整数,q为初级绕组每极每相槽数。Among them, τ p is the pole pitch of the secondary permanent magnet, τ t is the tooth pitch of the primary iron core, m is the phase number of the primary winding, k is a positive integer, and q is the number of slots per pole and phase of the primary winding.
本实施方式,次级2为“凹”字形三边结构,在双边结构的基础上增加了一个有效边,使得电机的空间利用率更高,具有更大的推力。In this embodiment, the secondary 2 is a "concave"-shaped three-sided structure, and an effective side is added on the basis of the double-sided structure, so that the space utilization rate of the motor is higher and the thrust is greater.
由初级铁心的一侧和绕组的一个有效边,与气隙和同侧的次级构成一个磁路,为初级-绕组-气隙-永磁体-次级-永磁体-气隙-绕组-初级,则电机有三个磁路,相互并联,可以实现电磁推力的叠加,在节约空间的同时增加电机的推力。One side of the primary core and one effective side of the winding form a magnetic circuit with the air gap and the secondary on the same side, which is primary-winding-air gap-permanent magnet-secondary-permanent magnet-air gap-winding-primary , the motor has three magnetic circuits connected in parallel, which can realize the superposition of electromagnetic thrust and increase the thrust of the motor while saving space.
具体实施方式三:参见图9至图11说明本实施方式,本实施方式所述的环形绕组磁场调制直线电机,它包括初级1和次级2,且二者间存在气隙;Specific embodiment three: referring to Fig. 9 to Fig. 11 to illustrate this embodiment, the annular winding magnetic field modulation linear motor described in this embodiment includes a primary 1 and a secondary 2, and there is an air gap between them;
初级1包括主初级铁心1-1、初级绕组1-2和两个辅助初级铁心1-3;两个辅助初级铁心1-3位于主初级铁心1-1的两侧,在主初级铁心1-1的左、右两个气隙侧沿纵向开初级槽,在槽内设置初级绕组1-2,所述初级绕组1-2采用环形绕组实现,并为三相对称绕组形式;The primary 1 includes a main primary core 1-1, a primary winding 1-2 and two auxiliary primary cores 1-3; the two auxiliary primary cores 1-3 are located on both sides of the main primary core 1-1, and on the main primary core 1- The left and right air gap sides of 1 have primary slots along the longitudinal direction, and primary windings 1-2 are arranged in the slots, and the primary windings 1-2 are realized by ring windings, and are in the form of three-phase symmetrical windings;
次级2为双边结构,且双边分别位于主初级铁心1-1与两个辅助初级铁心1-3之间,次级2的每个边上嵌入有次级永磁体2-1,所述次级永磁体2-1同时面向主初级铁心1-1与辅助初级铁心1-3,次级永磁体2-1的充磁方向与运动方向垂直,且每个边上相邻的两个次级永磁体2-1的充磁方向相反,双边对应位置的次级永磁体2-1的充磁方向相同;The secondary 2 is a double-sided structure, and the two sides are respectively located between the main primary core 1-1 and the two auxiliary primary cores 1-3, and a secondary permanent magnet 2-1 is embedded on each side of the secondary 2. The primary permanent magnet 2-1 faces the main primary core 1-1 and the auxiliary primary core 1-3 at the same time, the magnetization direction of the secondary permanent magnet 2-1 is perpendicular to the direction of motion, and the two adjacent secondary permanent magnets on each side The magnetization directions of the permanent magnets 2-1 are opposite, and the magnetization directions of the secondary permanent magnets 2-1 at corresponding positions on both sides are the same;
辅助初级铁心1-3为方形块体,且辅助初级铁心1-3的气隙侧沿纵向开初级槽,且该初级槽与主初级铁心1-1气隙侧所开的初级槽一致;The auxiliary primary core 1-3 is a square block, and the air gap side of the auxiliary primary core 1-3 is provided with primary slots along the longitudinal direction, and the primary slots are consistent with the primary slots opened on the air gap side of the main primary core 1-1;
单边次级2上的次级永磁体2-1的极对数均为P,The pole pairs of the secondary permanent magnets 2-1 on the unilateral secondary 2 are all P,
主初级铁心1-1的每个气隙侧槽数为Q,The number of side slots for each air gap of the main primary core 1-1 is Q,
初级绕组1-2的基波磁动势极对数为S,且P、Q和S间满足以下关系:The number of pole pairs of the fundamental magnetomotive force of the primary winding 1-2 is S, and the relationship between P, Q and S satisfies the following relationship:
P=Q±S, P=Q±S ,
2Pτp=Qτt,2Pτ p = Qτt,
Q=2mkq,Q=2mkq,
其中,τp为次级永磁体极距,τt为初级铁心齿距,m为初级绕组相数,k为正整数,q为初级绕组每极每相槽数。Among them, τ p is the pole pitch of the secondary permanent magnet, τ t is the tooth pitch of the primary iron core, m is the phase number of the primary winding, k is a positive integer, and q is the number of slots per pole and phase of the primary winding.
本实施方式,由初级铁心的一侧和绕组的一个有效边,与两层气隙丶次级和辅助初级形成一个闭合磁路,则磁路为初级-绕组-气隙-次级-辅助初级-气隙-永磁体-次级-永磁体-气隙-绕组-初级,于是电机具有两个磁路并且相互并联叠加,由于次级相对于初级具有更小的重量,更小的体积,对于特定的使用场合,可以的采用动次级的运动形式。In this embodiment, one side of the primary core and one effective side of the winding form a closed magnetic circuit with two layers of air gaps, secondary and auxiliary primary, and the magnetic circuit is primary-winding-air gap-secondary-auxiliary primary -Air gap-Permanent magnet-Secondary-Permanent magnet-Air gap-Winding-Primary, then the motor has two magnetic circuits and superimposed in parallel with each other, because the secondary has a smaller weight and smaller volume than the primary, for For specific use occasions, it is possible to use a dynamic secondary movement form.
由于次级相对于初级具有更小的重量,更小的体积具体体现为:由于初级由初级铁心和绕组构成,整体的重量远高于次级的固定铝板和永磁体的重量,且次级整体体积更小,因此,在特定的运行场合,动次级的运行方式更具有优势。Since the secondary has a smaller weight than the primary, the smaller volume is specifically reflected in: since the primary is composed of the primary core and windings, the overall weight is much higher than the weight of the secondary fixed aluminum plate and permanent magnet, and the secondary overall The volume is smaller, therefore, in specific operating occasions, the operation mode of the dynamic secondary is more advantageous.
具体实施方式四:参见图9至图14说明本实施方式,本实施方式与具体实施方式三所述的环形绕组磁场调制直线电机的区别在于,所述的辅助初级铁心1-3的气隙侧所开的初级槽中嵌入初级绕组1-2,所述初级绕组1-2采用环形绕组实现,并为三相对称绕组形式。Specific Embodiment 4: Refer to FIG. 9 to FIG. 14 to illustrate this embodiment. The difference between this embodiment and the annular winding magnetic field modulation linear motor described in Embodiment 3 is that the air gap side of the auxiliary primary core 1-3 is The primary winding 1-2 is embedded in the opened primary slot, and the primary winding 1-2 is realized by ring winding, and is in the form of three-phase symmetrical winding.
本实施方式,由初级铁心的一侧和绕组的一个有效边,与两层气隙,次级和辅助初级形成一个闭合磁路,则磁路为初级-绕组-气隙-次级-绕组-辅助初级-绕组-气隙-永磁体-次级-永磁体-气隙-绕组-初级,于是电机具有两个磁路并且相互并联叠加,由于次级相对于初级具有更小的重量,更小的体积,对于特定的使用场合,可以的采用动次级的形式。In this embodiment, one side of the primary core and one effective side of the winding form a closed magnetic circuit with two layers of air gaps, the secondary and the auxiliary primary, and the magnetic circuit is primary-winding-air gap-secondary-winding- Auxiliary primary-winding-air gap-permanent magnet-secondary-permanent magnet-air gap-winding-primary, then the motor has two magnetic circuits and superimposed in parallel with each other, since the secondary has a smaller weight than the primary, smaller The volume, for specific use occasions, can be in the form of a dynamic secondary.
本实施方式中,增加了辅助初级励磁绕组,作为磁路的一部分增加气隙磁密,可进一步提高电机的推力密度,从而提高电机的推力。In this embodiment, the auxiliary primary excitation winding is added to increase the air gap magnetic density as a part of the magnetic circuit, which can further increase the thrust density of the motor, thereby increasing the thrust of the motor.
由于次级相对于初级具有更小的重量,更小的体积具体体现为:由于初级由初级铁心和绕组构成,整体的重量远高于次级的固定铝板和永磁体的重量,且次级整体体积更小。因此在特定的运行场合,动次级的运行方式更具有优势。Since the secondary has a smaller weight than the primary, the smaller volume is specifically reflected in: since the primary is composed of the primary core and windings, the overall weight is much higher than the weight of the secondary fixed aluminum plate and permanent magnet, and the secondary overall Smaller size. Therefore, in specific operating occasions, the dynamic secondary operation mode has more advantages.
具体实施方式五:参见图15至图17说明本实施方式,本实施方式所述的环形绕组磁场调制直线电机,它包括初级1和次级2,次级2位于初级1的内部,且二者同轴、且存在气隙;Specific Embodiment 5: Referring to Fig. 15 to Fig. 17 to illustrate this embodiment, the annular winding magnetic field modulation linear motor described in this embodiment includes a primary 1 and a secondary 2, the secondary 2 is located inside the primary 1, and the two Coaxial with an air gap;
初级1包括初级铁心1-1和初级绕组1-2,初级铁心1-1为圆筒形结构,在初级铁心1-1的内表面沿圆周方向开初级槽,各初级槽沿运动方向均匀排列,且在初级槽内嵌放初级绕组1-2,所述初级绕组1-2采用环形绕组实现,并为三相对称绕组形式;The primary 1 includes a primary iron core 1-1 and a primary winding 1-2. The primary iron core 1-1 has a cylindrical structure, and primary slots are opened on the inner surface of the primary iron core 1-1 along the circumferential direction, and the primary slots are evenly arranged along the moving direction. , and the primary winding 1-2 is embedded in the primary slot, and the primary winding 1-2 is implemented by a ring winding, and is in the form of a three-phase symmetrical winding;
次级2为圆柱或圆筒形结构,其外表面粘贴有圆环形次级永磁体2-1,圆环形次级永磁体2-1的充磁方向与运动方向垂直,且相邻的两个圆环形次级永磁体2-1的充磁方向相反,The secondary 2 is a cylindrical or cylindrical structure, and an annular secondary permanent magnet 2-1 is pasted on its outer surface. The magnetization direction of the annular secondary permanent magnet 2-1 is perpendicular to the direction of motion, and the adjacent The magnetization directions of the two annular secondary permanent magnets 2-1 are opposite,
圆环形次级永磁体2-1的极对数为P,The number of pole pairs of the annular secondary permanent magnet 2-1 is P,
初级铁心1-1气隙侧的槽数为Q,The number of slots on the air gap side of the primary core 1-1 is Q,
初级绕组1-2的基波磁动势极对数为S,且P、Q和S间满足以下关系:The number of pole pairs of the fundamental magnetomotive force of the primary winding 1-2 is S, and the relationship between P, Q and S satisfies the following relationship:
P=Q±S,P=Q±S,
2Pτp=Qτt,2Pτ p = Qτ t ,
Q=2mkq,Q=2mkq,
其中,τp为次级永磁体极距,τt为初级铁心齿距,m为初级绕组相数,k为正整数,q为初级绕组每极每相槽数。Among them, τ p is the pole pitch of the secondary permanent magnet, τ t is the tooth pitch of the primary iron core, m is the phase number of the primary winding, k is a positive integer, and q is the number of slots per pole and phase of the primary winding.
本实施方式,采用圆筒形直线电机的结构,由初级铁心-绕组-气隙-永磁体-次级-永磁体-气隙-绕组-初级构成一个磁路,等效于电机的单边结构,且为外动子的结构,由于圆筒形直线电机具有均匀的气隙,使得电机没有纵向端部效应,减小电机的推力波动。In this embodiment, the structure of the cylindrical linear motor is adopted, and a magnetic circuit is formed by the primary core-winding-air gap-permanent magnet-secondary-permanent magnet-air gap-winding-primary, which is equivalent to the unilateral structure of the motor , and the structure of the outer mover, because the cylindrical linear motor has a uniform air gap, so that the motor has no longitudinal end effect, reducing the thrust fluctuation of the motor.
具体实施方式六:参见图18至图20说明本实施方式,本实施方式所述的环形绕组磁场调制直线电机,它包括初级1和次级2,初级1位于次级2的内部,二者同轴、且存在气隙;Specific Embodiment 6: Referring to Fig. 18 to Fig. 20 to illustrate this embodiment, the annular winding magnetic field modulation linear motor described in this embodiment includes a primary 1 and a secondary 2, the primary 1 is located inside the secondary 2, and both shaft with an air gap;
初级1包括初级铁心1-1和初级绕组1-2,初级铁心1-1为圆柱或圆筒形结构,初级铁心1-1的外表面沿圆周方向开初级槽,各初级槽沿运动方向均匀排列,且初级槽中嵌放初级绕组1-2,所述初级绕组1-2采用环形绕组实现,并为三相对称绕组形式;The primary 1 includes a primary iron core 1-1 and a primary winding 1-2. The primary iron core 1-1 is a cylindrical or cylindrical structure. The outer surface of the primary iron core 1-1 is provided with primary slots along the circumferential direction, and each primary slot is uniform along the direction of motion. Arranged, and the primary winding 1-2 is embedded in the primary slot, and the primary winding 1-2 is realized by annular winding, and is in the form of three-phase symmetrical winding;
次级2为圆筒形结构,次级2的内表面粘贴有圆环形次级永磁体2-1,圆环形次级永磁体2-1的充磁方向与运动方向垂直,且相邻的两个圆环形次级永磁体2-1的充磁方向相反;The secondary 2 is a cylindrical structure, and the inner surface of the secondary 2 is pasted with a ring-shaped secondary permanent magnet 2-1. The magnetization direction of the ring-shaped secondary permanent magnet 2-1 is perpendicular to the direction of motion, and is adjacent to The magnetization directions of the two annular secondary permanent magnets 2-1 are opposite;
圆环形次级永磁体2-1的极对数为P,The number of pole pairs of the annular secondary permanent magnet 2-1 is P,
初级铁心1-1外表面的槽数为Q,The number of slots on the outer surface of the primary core 1-1 is Q,
初级绕组1-2的基波磁动势极对数为S,且P、Q和S间满足以下关系:The number of pole pairs of the fundamental magnetomotive force of the primary winding 1-2 is S, and the relationship between P, Q and S satisfies the following relationship:
P=Q±S,P=Q±S,
2Pτp=Qτt,2Pτ p = Qτt,
Q=2mkq,Q=2mkq,
其中,τp为次级永磁体极距,τt为初级铁心齿距,m为初级绕组相数,k为正整数,q为初级绕组每极每相槽数。Among them, τ p is the pole pitch of the secondary permanent magnet, τ t is the tooth pitch of the primary iron core, m is the phase number of the primary winding, k is a positive integer, and q is the number of slots per pole and phase of the primary winding.
本实施方式,采用圆筒形直线电机的结构,由初级铁心-绕组-气隙-永磁体-次级-永磁体-气隙-绕组-初级构成一个磁路,等效于电机的单边结构,且为内动子的结构,由于圆筒形直线电机具有均匀的气隙,使得电机没有纵向端部效应,减小电机的推力波动。In this embodiment, the structure of the cylindrical linear motor is adopted, and a magnetic circuit is formed by the primary core-winding-air gap-permanent magnet-secondary-permanent magnet-air gap-winding-primary, which is equivalent to the unilateral structure of the motor , and the structure of the inner mover, because the cylindrical linear motor has a uniform air gap, so that the motor has no longitudinal end effect, reducing the thrust fluctuation of the motor.
具体实施方式七:参见图21至图23说明本实施方式,本实施方式所述的环形绕组磁场调制直线电机,它包括初级1和次级2,初级1位于次级2的上方,且二者间存在气隙;Specific Embodiment 7: Referring to Fig. 21 to Fig. 23 to illustrate this embodiment, the annular winding magnetic field modulation linear motor described in this embodiment includes a primary 1 and a secondary 2, the primary 1 is located above the secondary 2, and the two there is an air gap between
初级1包括初级铁心1-1和初级绕组1-2,在初级铁心1-1的气隙侧沿横向开初级槽,在槽内设置初级绕组1-2,所述初级绕组1-2采用环形绕组实现,并为三相对称绕组形式;The primary 1 includes a primary iron core 1-1 and a primary winding 1-2. A primary slot is opened transversely on the air gap side of the primary iron core 1-1, and a primary winding 1-2 is arranged in the slot. The primary winding 1-2 adopts a ring The winding is realized, and it is a three-phase symmetrical winding form;
次级2为单边结构,且次级2的气隙侧设有次级永磁体2-1,次级永磁体2-1的充磁方向与运动方向垂直,且相邻的两个次级永磁体2-1的充磁方向相反;The secondary 2 is a unilateral structure, and the air gap side of the secondary 2 is provided with a secondary permanent magnet 2-1, the magnetization direction of the secondary permanent magnet 2-1 is perpendicular to the direction of motion, and the adjacent two secondary The magnetization direction of the permanent magnet 2-1 is opposite;
次级永磁体2-1的极对数为P,The number of pole pairs of the secondary permanent magnet 2-1 is P,
初级铁心1-1的气隙侧槽数为Q,The number of air gap side slots of the primary core 1-1 is Q,
初级绕组1-2的基波磁动势极对数为S,且P、Q和S间满足以下关系:The number of pole pairs of the fundamental magnetomotive force of the primary winding 1-2 is S, and the relationship between P, Q and S satisfies the following relationship:
P=Q±S,P=Q±S,
2Pτp=Qτt,2Pτ p = Qτt,
Q=2mkq,Q=2mkq,
其中,τp为次级永磁体极距,τt为初级铁心齿距,m为初级绕组相数,k为正整数,q为初级绕组每极每相槽数。Among them, τ p is the pole pitch of the secondary permanent magnet, τ t is the tooth pitch of the primary iron core, m is the phase number of the primary winding, k is a positive integer, and q is the number of slots per pole and phase of the primary winding.
本实施方式为单边结构,与初级-绕组-气隙-永磁体-次级-永磁体-气隙-初级构成闭合磁路,由于实施方式一至六为自然冷却结构,电流密度有一定限制,而本实施方案可以在另一个增加冷却装置,提高电流密度从而增加电机的推力密度,从而获取更大的推力。This embodiment is a unilateral structure, which forms a closed magnetic circuit with the primary-winding-air gap-permanent magnet-secondary-permanent magnet-air gap-primary. Since the first to sixth embodiments are natural cooling structures, the current density is limited. In this embodiment, another cooling device can be added to increase the current density to increase the thrust density of the motor, thereby obtaining greater thrust.
具体实施方式八:参见图24至图27说明本实施方式,本实施方式所述的环形绕组磁场调制直线电机,它包括初级1和次级2,初级1位于次级2的上方,且二者间存在气隙;Embodiment 8: Referring to Fig. 24 to Fig. 27 to illustrate this embodiment, the annular winding magnetic field modulation linear motor described in this embodiment includes a primary 1 and a secondary 2, the primary 1 is located above the secondary 2, and the two there is an air gap between
初级1包括初级铁心1-1和初级绕组1-2,在初级铁心1-1的上、下表面沿横向开初级槽,且每个初级槽中嵌放一个初级绕组1-2,所述初级绕组1-2采用环形绕组实现,并为三相对称绕组形式;The primary 1 includes a primary iron core 1-1 and a primary winding 1-2. Primary slots are opened transversely on the upper and lower surfaces of the primary iron core 1-1, and a primary winding 1-2 is embedded in each primary slot. Winding 1-2 is realized by ring winding, and is a three-phase symmetrical winding form;
次级2为单边结构,且次级2的气隙侧设有次级永磁体2-1,次级永磁体2-1的充磁方向与运动方向垂直,且相邻的两个次级永磁体2-1的充磁方向相反;The secondary 2 is a unilateral structure, and the air gap side of the secondary 2 is provided with a secondary permanent magnet 2-1, the magnetization direction of the secondary permanent magnet 2-1 is perpendicular to the direction of motion, and the adjacent two secondary The magnetization direction of the permanent magnet 2-1 is opposite;
次级永磁体2-1的极对数为P,The number of pole pairs of the secondary permanent magnet 2-1 is P,
初级铁心1-1的气隙侧槽数为Q,The number of air gap side slots of the primary core 1-1 is Q,
初级绕组1-2的基波磁动势极对数为S,且P、Q和S间满足以下关系:The number of pole pairs of the fundamental magnetomotive force of the primary winding 1-2 is S, and the relationship between P, Q and S satisfies the following relationship:
P=Q±S,P=Q±S,
2Pτp=Qτt,2Pτ p = Qτ t ,
Q=2mkq,Q=2mkq,
其中,τp为次级永磁体极距,τt为初级铁心齿距,m为初级绕组相数,k为正整数,q为初级绕组每极每相槽数。Among them, τ p is the pole pitch of the secondary permanent magnet, τ t is the tooth pitch of the primary iron core, m is the phase number of the primary winding, k is a positive integer, and q is the number of slots per pole and phase of the primary winding.
本实施方式为单边结构,与初级-绕组-气隙-永磁体-次级-永磁体-气隙-初级构成闭合磁路,由于具体实施方式一至六为自然冷却结构,电流密度有一定限制,而本实施方案可以在另一个增加冷却装置,提高电流密度从而增加电机的推力密度,从而获取更大的推力。This embodiment is a unilateral structure, which forms a closed magnetic circuit with the primary-winding-air gap-permanent magnet-secondary-permanent magnet-air gap-primary. Since specific embodiments 1 to 6 are natural cooling structures, the current density is limited to a certain extent. , and this embodiment can add another cooling device to increase the current density to increase the thrust density of the motor, thereby obtaining greater thrust.
具体实施方式九:参见图2至图8和图21至图27说明本实施方式,本实施方式与具体实施方式一、二、七或八所述的环形绕组磁场调制直线电机的区别在于,所述的初级铁心1-1为方形块体。Specific Embodiment Ninth: Refer to Fig. 2 to Fig. 8 and Fig. 21 to Fig. 27 to illustrate this embodiment mode. The primary iron core 1-1 described above is a square block.
具体实施方式十:参见图9至图14说明本实施方式,本实施方式与具体实施方式三或四所述的环形绕组磁场调制直线电机的区别在于,所述的主初级铁心1-1为方形块体。Embodiment 10: Refer to Fig. 9 to Fig. 14 to illustrate this embodiment. The difference between this embodiment and the annular winding magnetic field modulation linear motor described in Embodiment 3 or 4 is that the main primary core 1-1 is square blocks.
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Application publication date: 20170721 |