CN106100272B - 一种少稀土齿轭互补的双凸极磁通可控电机 - Google Patents
一种少稀土齿轭互补的双凸极磁通可控电机 Download PDFInfo
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- CN106100272B CN106100272B CN201610438709.9A CN201610438709A CN106100272B CN 106100272 B CN106100272 B CN 106100272B CN 201610438709 A CN201610438709 A CN 201610438709A CN 106100272 B CN106100272 B CN 106100272B
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- tooth
- layer stator
- stator
- permanent magnet
- salient
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- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 13
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 13
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- 238000004804 winding Methods 0.000 claims abstract description 48
- 229910017709 Ni Co Inorganic materials 0.000 claims abstract description 25
- 229910003267 Ni-Co Inorganic materials 0.000 claims abstract description 25
- 229910003262 Ni‐Co Inorganic materials 0.000 claims abstract description 25
- 229910001172 neodymium magnet Inorganic materials 0.000 claims abstract description 25
- 230000002093 peripheral Effects 0.000 claims abstract description 4
- 229910000828 alnico Inorganic materials 0.000 claims description 6
- -1 aluminium Nickel cobalt Chemical compound 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical group data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/38—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/17—Stator cores with permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
- H02K21/021—Means for mechanical adjustment of the excitation flux
- H02K21/022—Means for mechanical adjustment of the excitation flux by modifying the relative position between field and armature, e.g. between rotor and stator
- H02K21/025—Means for mechanical adjustment of the excitation flux by modifying the relative position between field and armature, e.g. between rotor and stator by varying the thickness of the air gap between field and armature
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
Abstract
本发明公开一种电机领域中的少稀土齿轭互补的双凸极磁通可控电机，转子铁芯内部中心同轴装有定子，定子铁芯由外层定子和内层定子组成，外层定子由沿圆周方向均匀布置的多个外层定子单元组成，每个外层定子单元都由左侧齿、中间齿和右侧齿这3个外层定子齿和一个外层定子轭组成；每个中间齿的外圈表面都固定表贴一块径向充磁的钕铁硼永磁体，每个内层定子齿和外层定子轭之间都固定镶嵌一块径向充磁的铝镍钴永磁体；连接于同一个外层定子单元上的铝镍钴永磁体和钕铁硼永磁体的充磁方向相反；外层定子齿上绕有电枢绕组，内层定子齿上绕有调磁脉冲绕组；减小了稀土永磁的用量，既可以控制磁通大小，又可以减小励磁绕组的铜耗。
Description
一种少稀土齿轭互补的双凸极磁通可控电机
技术领域
[0001] 本发明属于电机制造领域，特别是一种混合励磁双凸极永磁电机。
背景技术
[0002] 双凸极永磁电机是随着永磁材料的出现和功率电子学、计算机、控制理论的发展 而提出的一种新型机电一体化交流调速电机，它是由开关磁阻电机发展而来，在传统开关 磁阻电机定子辄部嵌入了永磁体，使得它具有永磁电机高功率密度、高效率的特点，同时， 它继承了开关磁阻电机的转子结构，转子上无绕组也没有永磁体，从而可以避免电机高速 旋转过程中引起磁钢脱落和转子温升引起的不可逆退磁现象。但是传统的双凸极永磁电机 通常在辄部使用了大量的永磁体来获得较高的电磁性能，而且这部分永磁体均为切向充 磁，永磁体在定子外侧会产生较大的漏磁通，这就相当于一部分永磁体自身形成磁短路，降 低了永磁体的利用率。另外，由于传统双凸极永磁电机磁场不可调节，难以满足一些宽调速 场合的要求;而一般的混合励磁电机虽然可以满足磁场可调的要求，但励磁绕组却大大增 加了电机的铜耗。
发明内容
[0003] 本发明的目的是为解决现有双凸极永磁电机存在的问题，提供一种铜耗小、效率 高、稀土永磁用量少、转矩脉动低和调速范围宽的少稀土齿辄互补的双凸极磁通可控电机。
[0004] 本发明采用的技术方案是:本发明外部是转子铁芯，转子铁芯内部中心同轴装有 定子，所述定子由定子铁芯、铝镍钴永磁体、钕铁硼永磁体、调磁脉冲绕组和电枢绕组组成； 所述定子铁芯由外层定子和内层定子组成，所述内层定子由内层定子齿和内层定子辄组 成，所述外层定子由沿圆周方向均匀布置的多个外层定子单元组成，每个外层定子单元都 由左侧齿、中间齿和右侧齿这3个外层定子齿和一个外层定子辄组成;每个外层定子单元中 的中间齿的外圈表面都固定表贴一块径向充磁的钕铁硼永磁体，相邻的两块钕铁硼永磁体 的充磁方向相反;每个内层定子齿和外层定子辄之间都固定镶嵌一块径向充磁的铝镍钴永 磁体，相邻的两块铝镍钴永磁体的充磁方向相反;连接于同一个外层定子单元上的铝镍钴 永磁体和钕铁硼永磁体的充磁方向相反;外层定子齿上绕有电枢绕组，内层定子齿上绕有 调磁脉冲绕组，调磁脉冲绕组产生的磁场方向与铝镍钴永磁体的充磁方向一致。
[0005] 本发明采用上述技术方案后具有的有益效果是：
[0006] 1.本发明通过改变电机定子结构和钕铁硼永磁体位置，可以提高钕铁硼永磁体的 利用率，从而保证在同等电磁性能的情况下减小稀土永磁的用量，降低电机的制造成本。
[0007] 2.通过改变电机转子极数，使得同一相的相邻线圈绕组中的磁链相差180度电角 度，相邻两个线圈中高次谐波互相抵消，提高了电机反电势正弦度。
[0008] 3.由于绕组中的反电势高度正弦，本发明就可以在交流无刷状态下运行，驱动控 制电路简单，并且由于反电势中谐波含量少，使得电机输出转矩脉动小；
[0009] 4.本发明通过控制直流脉冲的大小和方向，就可以实现气隙磁场的自由调节，并 且通过合理设计永磁体及定转子结构和气隙程度，可以实现在额定转速以上的弱磁扩速和 低速时的增磁加速；
[0010] 5.本发明的定子辄部的铝镍钴永磁体位于定子的内层环，电枢磁场大部分流经 定子外环，这样可以有效避免铝镍钴永磁体退磁。
[0011] 6.位于定子齿部的钕铁硼永磁体和位于定子辄部的铝镍钴永磁体相对充磁，共同 作用在未安装永磁体的定子齿表面产生磁动势，具有很好的聚磁效应。
[0012] 7.电枢绕组的线圈顺向串联，绕组方向一致向内（或者向外），有利于实现全自动 加工，提高电机绕组加工效率；
[0013] 8.本发明的励磁绕组中施加直流脉冲，配合铝镍钴永磁体的磁通记忆效应，既可 以控制磁通大小，又可以减小励磁绕组的铜耗，有利于提高电机的效率。
[00M] 9.本发明采用外转子结构，适用于外转子直驱系统，可以省去动力传输结构，提高 驱动系统能量转换效率。
附图说明
[0015] 图1为本发明少稀土齿辄互补的双凸极磁通可控电机的结构示意图；
[0016] 图2为图1中转子铁芯5的结构示意及几何尺寸标注放大图；
[0017] 图3为图1中定子铁芯1的结构示意及几何尺寸标注放大图；
[0018] 图4为图3中定子铁芯1和永磁体的装配结构及几何尺寸标注放大图；
[00 19]图5为图1中调磁脉冲绕组4.1和电枢绕组4.2的布置示意放大图；
[0020] 图6为图5中电枢绕组4.2的连接示意图。
[0021] 图中：1.定子铁芯;2.铝镍钴永磁体;3.钕铁硼永磁体;4.1.调磁脉冲绕组;4.2.电 枢绕组；
[0022] 5 ·转子铁芯;5 · 1 ·转子凸极;5 · 2 ·转子槽；
[0023] 6.外层定子;6.1.外层定子齿;6.2.外层定子辄;6.3.外层定子槽;6.4.外层定子 单元;6.5.连接桥;6.4.1.左侧齿;6.4.2.中间齿;6.4.3.右侧齿；
[0024] 7.内层定子;7.1.内层定子齿;7.2.内层定子辄;7.3.内层定子槽。
具体实施方式
[0025] 参见图1，本发明电机是外转子、内定子结构，外部是转子铁芯5，转子铁芯5与电机 转矩输出轴相连，转子铁芯5的外侧是不导磁的机壳，机壳与电机端盖相连，端盖与转矩输 出轴通过轴承相连。转子铁芯5内部中心同轴安装定子。定子由定子铁芯1、错镍钴永磁体2、 钕铁硼永磁体3、调磁脉冲绕组4.1和电枢绕组4.2构成，定子铁芯1的中心与电机固定轴相 连。
[0026] 参见图2,转子铁芯5在结构上属于凸极结构，转子铁芯5上既无永磁体也无绕组。 转子铁芯5共包含凡个转子凸极5.1，相邻两个转子凸极5.1之间形成转子槽5.2。相邻两个 转子凸极5.1之间的极距角为极距角τ与转子凸极5.1数量Yr满足τΓ=2π/凡，转子凸极5.1 的极弧角为A，满足A=Arh,其中I为转子凸极极弧系数。转子槽5.2的槽底面的半径为R9， 槽宽角为石4，槽宽角β4与极弧角β3、极距角Tr的关系满足β4+β3 = Tr。转子铁芯5的外圈半径为 R8,内圈半径为R10，R8和RlO的值与电机功率大小有关。
[0027] 参见图3和图4的定子铁芯1，定子铁芯1由外层定子6和内层定子7组成。内层定子7 为凸极结构，由内层定子齿7.1和内层定子辄7.2组成，每两个内层定子齿7.1之间形成内层 定子槽7.3，内层定子辄7.2中心孔同轴固定连接电机固定轴。
[0028] 外层定子6由多个外层定子单元6.4组成，多个外层定子单元6.4沿圆周方向均匀 布置。每个外层定子单元6.4都由外层定子齿6.1和外层定子辄6.2组成，相邻的两个外层定 子齿6.1之间形成外层定子槽6.3。每个外层定子单元6.4都有3个外层定子齿6.1，分别为左 侧齿6.4.1、中间齿6.4.2和右侧齿6.4.3，这3个外层定子齿6.1形成2个外层定子槽6.3。外 层定子单元6.4的数量Va和内层定子齿7.1的数量相等，位置正对，中心线在相同的直径上。 [0029]外层定子单元6.4的数量是队，外层定子齿6.1的总数量队满足队=队//?2，/?2为电机相 数。外层定子齿6.1的总数量队和转子凸极5.1数量1分别满砂
其中 为电机相数，队为每相电枢绕组线圈的个数且队只能为偶数。当电机为三相，每相电枢绕组 有4个线圈时，S卩/ώ=3，队=4时，可选取外层定子齿6.1的总齿数队=12，转子凸极5.1数队=10。
[0030] 每个外层定子单元6.4都以外层定子辄6.2通过连接桥6.5和内层定子凸极7.1相 连，通过连接桥6.5将外层定子6和内层定子7固定连接在一起。连接桥6.5宽度为h 1，其值与 电机功率大小、铁芯材料有关，须保证连接强度和可靠性。
[0031] 参见图4,在每个外层定子单兀6.4的中间齿6.4.2的外圈表面都固定表贴一块钕 铁硼永磁体3,在每个内层定子齿7.1和外层定子辄6.2之间都固定镶嵌一块铝镍钴永磁体 2,铝镍钴永磁体2的尺寸与内层定子齿7.1的表面尺寸相一致。钕铁硼永磁体3和铝镍钴永 磁体2数量均为尾，与外层定子齿6.1和内层定子齿7.1的数量相等。
[0032] 相邻两个钕铁硼永磁体3之间夹角为7 2,钕铁硼永磁体3为圆弧状，其充磁方向为 径向充磁，相邻的两个钕铁硼永磁体3充磁方向相反。钕铁硼永磁体3内侧半径为R6,其厚度 为dl，两者值与左侧齿6.4.1的半径1?1的关系满足(11+1?6=1?1;钕铁硼永磁体3的弧度角〇2与 外层定子齿6.1极弧角A相等。铝镍钴永磁体2为圆弧状，其充磁方向也为径向充磁，相邻的 两块错镍钴永磁体2的充磁方向相反。固定连接于同一外层定子单元6.4上的错镍钴永磁体 2和钕铁硼永磁体3充磁方向相反。铝镍钴永磁体2内侧的圆弧半径为R7,半径R7与铝镍钴永 磁体2的厚度d2和外层定子辄6.2的半径1?4满足1?7+(12=1?4。铝镍钴永磁体2的弧度角为你，弧 度角万2略小于内层定子齿7.1的齿极弧角7 1。
[0033] 内层定子槽7.3半径为R5,其值与励磁脉冲大小有关。夕卜层定子齿6.1和外层定子 辄6.2之间采用圆弧过渡，内层定子凸极7.1和内层定子辄7.2之间也同样采用圆弧过渡。
[0034] 左侧齿6.4.1和右侧齿6.4.3的半径相同，均为Rl，中间齿6.4.2的半径为R2，R2小 于Rl。1?1和R2的值与钕铁硼永磁体3径向厚度dl的关系满足Rl=R2+dl。
[0035] 内层定子7的内层定子齿7.1齿极弧角为7 1，其值满足7 其中Ab为内层 定子齿的极弧系数，其值在0.95〜0.98之间。
[0036] 相邻的两个外层定子齿6.1之间的极距角为^，其值满足Ts=2V队，外层定子齿6.1 的极弧角为A，其值与极距角L满足A=/Ts*ts，XS为极弧系数，取值在〇. 4〜0.6之间。
[0037] 定子槽6.3的槽底面半径为R3，外层定子辄6.2内端面半径为R4，两者值与定子外 径Rl和定子齿极弧角A满足RS-IM=Rl^u
[0038] 参见图5,由调磁脉冲绕组4.1和电枢绕组4.2组成电机绕组，内层定子齿7.1上绕 有调磁脉冲绕组4.1，调磁脉冲绕组4.1采用集中式绕组，其线圈个数与内层定子齿7.1的数 量相等。调磁脉冲绕组4.1采用直流脉冲进行调磁，绕组中电流产生的磁场方向与铝镍钴永 磁体2的充磁方向一致。通过控制调磁脉冲绕组4.1的直流脉冲的大小和方向，就可以实现 气隙磁场的自由调节。
[0039]外层定子齿6.1上绕有电枢绕组4.2，电枢绕组4.2采用三相集中式绕组，电枢绕组 4.2的线圈绕线方向相同，顺向串联，参见图6。线圈总个数Vt与外层定子齿6.1的总齿数1相 等，每相绕组由凡个线圈串联组成，线圈的数量V。与外层定子齿6.1的总齿数队和相数/22满足 队=/22*凡。调磁脉冲绕组4.1和电枢绕组4.2导线半径与电机额定电流和槽面积大小有关。可 通过改变转子极数，使得同一相的相邻线圈绕组中的磁链相差180度电角度，相邻两个线圈 中高次谐波互相抵消，提高了电机反电势正弦度。
Claims (5)
1. 一种少稀土齿辄互补的双凸极磁通可控电机，外部是转子铁芯（5)，转子铁芯（5)内 部中心同轴装有定子，其特征是:所述定子由定子铁芯（1)、铝镍钴永磁体(2)、钕铁硼永磁 体(3)、调磁脉冲绕组(4.1)和电枢绕组(4.2)组成;所述定子铁芯（1)由外层定子(6)和内层 定子(7)组成，所述内层定子(7)由内层定子齿(7.1)和内层定子辄(7.2)组成，所述外层定 子(6)由沿圆周方向均匀布置的多个外层定子单元(6.4)组成，每个外层定子单元(6.4)都 由左侧齿、中间齿和右侧齿这3个外层定子齿(6.1)和一个外层定子辄(6.2)组成;每个外层 定子单元(6.4)中的中间齿的外圈表面都固定表贴一块径向充磁的钕铁硼永磁体(3)，相邻 的两块钕铁硼永磁体(3)的充磁方向相反;每个内层定子齿(7.1)和外层定子辄(6.2)之间 都固定镶嵌一块径向充磁的铝镍钴永磁体(2)，相邻的两块铝镍钴永磁体(2)的充磁方向相 反;连接于同一个外层定子单元(6.4)上的错镍钴永磁体(2)和钕铁硼永磁体(3)的充磁方 向相反;外层定子齿(6.1)上绕有电枢绕组(4.2)，内层定子齿(7.1)上绕有调磁脉冲绕组 (4.1)，调磁脉冲绕组(4.1)产生的磁场方向与铝镍钴永磁体(2)的充磁方向一致。
2. 根据权利要求1所述一种少稀土齿辄互补的双凸极磁通可控电机，其特征是:外层定 子齿(6.1)的总数量是iVs，外层定子单元(6.4)的数量iVa=iVs//?2，/Ώ为电机相数。
3. 根据权利要求1所述一种少稀土齿辄互补的双凸极磁通可控电机，其特征是:所述左 侧齿和所右侧齿的半径均为R1，所述中间齿的半径为R2，Rl=R2+dl，dl是钕铁硼永磁体(3) 的径向厚度;铝镍钴永磁体(2)内侧半径为R7，外层定子辄(6.2)内侧半径R4=R7+d2，d2是铝 镍钴永磁体(2)的厚度d2。
4. 根据权利要求1所述一种少稀土齿辄互补的双凸极磁通可控电机，其特征是:钕铁硼 永磁体(3)的弧度角〇2与外层定子齿(6.1)的极弧角A相等，铝镍钴永磁体(2)的弧度角JS2小 于内层定子齿(7.1)的极弧角7 1。
5. 根据权利要求1所述一种少稀土齿辄互补的双凸极磁通可控电机，其特征是:转子铁 芯（5)是凸极结构，转子铁芯（5)有凡个转子凸极（5.1)，相邻两个转子凸极(5.1)之间形成 转子槽(5.2)，相邻两个转子凸极(5.1)之间的极距角Tr=2V凡，转子凸极(5.1)的极弧角JS3= 转子槽(5.2)的槽宽角为为转子凸极极弧系数。
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