CN1703819A - 永磁同步电机 - Google Patents
永磁同步电机 Download PDFInfo
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- CN1703819A CN1703819A CN200380101308.5A CN200380101308A CN1703819A CN 1703819 A CN1703819 A CN 1703819A CN 200380101308 A CN200380101308 A CN 200380101308A CN 1703819 A CN1703819 A CN 1703819A
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- 239000000463 material Substances 0.000 claims description 5
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- 238000000926 separation method Methods 0.000 abstract 3
- 230000000694 effects Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
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- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- 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
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
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- 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
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
- H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
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Abstract
为了创造一种气隙磁通密度得以提高的永磁电机,本发明建议这样一种永磁同步电机,其具有带有一些齿杆(3,4)的一定子,这些齿杆在它们朝向该同步电机的气隙的端部具有齿顶(5,6),其中,这些沿环周方向相邻排列的齿顶分别通过一槽隙(7)相互间隔开,该电机还具有一转子,该转子上的永久磁铁沿磁通集中方向设置,并且具有大于等于2.5的由齿距除以极距形成的分度率(τzb/τp),所述齿顶(5,6)具有用于避免磁饱和现象发生的器件。
Description
本发明涉及一种永磁同步电机,其具有带有一些齿杆的一定子,这些齿杆在它们朝向该同步电机的气隙的端部具有齿顶,其中,这些沿环周方向相邻排列的齿顶分别通过一槽隙相互间隔开,该电机还具有一转子,该转子上的永久磁铁沿磁通集中方向设置。
上述类型电机的齿顶只要承受增大的气隙磁通密度,就会磁饱和。这会导致损耗增大。以往对于这一问题是通过避免出现这样增大的气隙磁通密度来处理的。为了获得一尽可能大的槽断面,则尽可能保持小的齿顶径向尺寸。
因此,本发明要解决的技术问题是提供一种即便在气隙磁通密度增大时仍能有效使用的永磁电机。
上述技术问题通过这样一种永磁同步电机来解决,其具有带有一些齿杆的一定子,这些齿杆在它们朝向该同步电机的气隙的端部具有齿顶,其中,这些沿环周方向相邻排列的齿顶分别通过一槽隙相互间隔开,该电机还具有一转子,该转子上的永久磁铁沿磁通集中方向设置,并且具有由齿距除以极距形成的大于等于2.5的分度率τzb/τp,所述齿顶具有用于避免磁饱和现象发生的器件。
尤其在由齿距除以极距形成的分度率τzb/τp大于等于2.5时并且在转子的永久磁铁沿磁通集中方向定向时,会出现可促使齿顶趋于饱和的气隙磁通密度。但按照本发明的权利要求1,所述齿顶被设计成可避免磁饱和现象的发生。按照本发明的同步电机的齿顶的齿高在此比较有利地与结构设计所造成的气隙磁通密度相匹配。这样做很有必要,因为磁力线要经由齿顶去往相邻的永久磁铁地闭合。磁力线为此无需在定子的齿杆或磁轭背中经过,从而可有利地踏上一条结构上完全崭新的路径,因为所述磁轭背和齿杆不再需要针对这样的磁通密度来设计。这也就是说,可将齿杆和磁轭背的尺寸设计得明显更窄,从而只有更小的装入高度。
按照一种有利的实施方式,仅仅齿顶由磁化材料制成,而齿杆和磁轭背则由非磁化(amagnetisch)材料制成。在此,所述材料由明显比铁更轻的塑料制成。与此相应地定子为一种星型的结构。
按照另一种实施方式,所述槽隙相对于相邻齿杆的对称中线偏心设置。在此,仅仅带有较宽齿顶的齿杆带有极线圈。尤其是所述齿杆可比较有利地卡锁固定在磁轭背上,使得所述极线圈可事先套在上面。
下面借助附图所示实施方式对本发明的如从属权利要求所述的其他有利扩展设计予以详细说明,附图中:
图1是带有齿杆和齿顶的定子的截取示图;
图2至4分别示出不同结构的齿顶;
图5是按照本发明带有转子的一定子的横断面视图。
图1示出一被截取表示的定子1带有其磁轭2和向内伸向一气隙的齿杆3和4。这些齿杆在其朝向气隙的一侧具有齿顶5和6。所述齿杆3和4有不同的造型,这是因为所述齿顶沿环周方向看的长度不同。由此可以认为,所述各齿杆在工作运行时必须导引不同的磁通量。所述各齿顶5,6的高度hZK可有利地制成相同,但这并非必需。所述齿顶5,6必须设计成能避免磁饱和现象的发生。在此,例如对于齿顶5,6可以有图2至图4所示的各种齿顶形状。在两槽隙7之间是齿距τzb或τzs。所述槽8在图示实施例中被设计成带有槽隙宽度为b的槽隙7的半开槽。
所述齿顶的其他实施形式在图2至4中示出。这些实施形式一方面用于磁通导引,另一方面也节省了重量。在此,所述齿在齿杆3和4的对称轴线10,11左右两边侧区域内在高度上设计得比紧靠所述对称轴线10,11的部段要略低一些。这进一步节省了重量并节约了材料成本。
在图5所示的一实施例中,示出在齿顶高度hZK相同并且齿距τzb,τzs不同时的单个金属叠片的断面。基于转子的结构设计及其沿磁通集中方向设置的永久磁铁16和按照本发明的定子,所述齿杆3,4以及所述磁轭2背部的尺寸相对于传统电机可设计得更小,这是因为所述永久磁铁16的磁场基本上可经由齿顶5,6闭合。由此对于绕组,尤其是铜制绕组可形成较大的槽面积。
作为断面显示为一体式构造的叠片的替代方式,也可通过形状闭合和/或摩擦阻力传递的连接方式15将单个齿杆3,4或齿顶5,6定位在磁轭2的背部中。也可设想将一些断面显示为一体构造的叠片与一些断面显示被分成多段的叠片相互组合成一种混合形式。
Claims (7)
1.一种永磁同步电机,其具有带有一些齿杆(3,4)的一定子,这些齿杆在它们朝向该同步电机的气隙的端部具有齿顶(5,6),其中,这些沿环周方向相邻排列的齿顶分别通过一槽隙(7)相互间隔开,该电机还具有一转子,该转子上的永久磁铁沿磁通集中方向设置,并且具有大于等于2.5的由齿距除以极距形成的分度率(τzb/τp),所述齿顶(5,6)具有用于避免磁饱和现象发生的器件。
2.按照权利要求1所述的永磁同步电机,其特征为:所述各齿顶(5,6)沿环周方向看过去具有相同的高度(hZK)。
3.按照权利要求1或2所述的永磁同步电机,其特征为:所述齿顶(5,6)的高度(hZK)大于等于τp/2,其中,所述槽隙(7)的宽度b小于等于τp/2。
4.一种永磁同步电机,其特征为:所述定子(1)设计成星型。
5.按照上述任一项权利要求所述的永磁同步电机,其特征为:所述定子(1)具有不同的材料。
6.按照上述任一项权利要求所述的永磁同步电机,其特征为:所述定子(1)沿环周方向看过去具有不同的齿距,也就是说,所述槽隙(7)不位于齿杆(3,4)的对称中线上。
7.一种永磁同步电机,其特征为:所述定子(1)由一些沿轴向层叠的金属片组成,这些叠片既由相互独立的各单个扇形叠片组成同时又被构造成一体并按照一可预先规定的顺序排列设置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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DE10248771.5 | 2002-10-18 | ||
DE10248771A DE10248771A1 (de) | 2002-10-18 | 2002-10-18 | Permanenterregte Synchronmaschine |
PCT/DE2003/003364 WO2004038898A1 (de) | 2002-10-18 | 2003-10-10 | Permanenterregte synchronmaschine |
Publications (2)
Publication Number | Publication Date |
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CN1703819A true CN1703819A (zh) | 2005-11-30 |
CN100594656C CN100594656C (zh) | 2010-03-17 |
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CN200380101308A Expired - Fee Related CN100594656C (zh) | 2002-10-18 | 2003-10-10 | 永磁同步电机 |
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Country | Link |
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US (1) | US7141905B2 (zh) |
EP (1) | EP1552594B1 (zh) |
JP (1) | JP2006503538A (zh) |
CN (1) | CN100594656C (zh) |
DE (2) | DE10248771A1 (zh) |
WO (1) | WO2004038898A1 (zh) |
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US6583530B2 (en) * | 2001-02-20 | 2003-06-24 | Chun-Pu Hsu | Composite stator structure having corresponding concave embedding receiving grooves and arc-shaped teeth surfaces |
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-
2002
- 2002-10-18 DE DE10248771A patent/DE10248771A1/de not_active Withdrawn
-
2003
- 2003-10-10 CN CN200380101308A patent/CN100594656C/zh not_active Expired - Fee Related
- 2003-10-10 EP EP03773504A patent/EP1552594B1/de not_active Expired - Fee Related
- 2003-10-10 DE DE50312848T patent/DE50312848D1/de not_active Expired - Lifetime
- 2003-10-10 WO PCT/DE2003/003364 patent/WO2004038898A1/de active Application Filing
- 2003-10-10 JP JP2004545699A patent/JP2006503538A/ja active Pending
-
2005
- 2005-04-15 US US11/108,076 patent/US7141905B2/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103208871A (zh) * | 2012-01-13 | 2013-07-17 | 发那科株式会社 | 具备具有主齿及副齿的铁芯的电动机 |
CN107534326A (zh) * | 2015-06-17 | 2018-01-02 | 三菱电机株式会社 | 永磁同步电动机 |
US10897165B2 (en) | 2015-06-17 | 2021-01-19 | Mitsubishi Electric Corporation | Permanent magnet synchronous motor |
CN108604837A (zh) * | 2016-02-18 | 2018-09-28 | 三菱电机株式会社 | 旋转电机的定子、旋转电机及旋转电机的定子的制造方法 |
Also Published As
Publication number | Publication date |
---|---|
US20050231060A1 (en) | 2005-10-20 |
DE10248771A1 (de) | 2004-04-29 |
EP1552594B1 (de) | 2010-06-30 |
US7141905B2 (en) | 2006-11-28 |
JP2006503538A (ja) | 2006-01-26 |
EP1552594A1 (de) | 2005-07-13 |
DE50312848D1 (de) | 2010-08-12 |
WO2004038898A1 (de) | 2004-05-06 |
CN100594656C (zh) | 2010-03-17 |
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