CN105743312A - 无刷电磁与隐形磁极复合励磁驱动电机 - Google Patents

无刷电磁与隐形磁极复合励磁驱动电机 Download PDF

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CN105743312A
CN105743312A CN201610314133.5A CN201610314133A CN105743312A CN 105743312 A CN105743312 A CN 105743312A CN 201610314133 A CN201610314133 A CN 201610314133A CN 105743312 A CN105743312 A CN 105743312A
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magnet steel
rotor core
pole
rotor
arc
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高明玲
张学义
徐进彬
刘林
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Shandong University of Technology
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K21/00Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/27Rotor cores with permanent magnets
    • H02K1/2706Inner rotors
    • H02K1/2713Inner rotors the magnetisation axis of the magnets being axial, e.g. claw-pole type
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/27Rotor cores with permanent magnets
    • H02K1/2706Inner rotors
    • H02K1/272Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K29/00Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/64Electric machine technologies in electromobility

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

本发明提供一种无刷电磁与隐形磁极复合励磁驱动电机,属于电动汽车电机电器技术领域。由前端盖、后端盖、机壳、转子、定子组成,矩形永磁钢内嵌在径向矩形槽内,瓦片永磁钢内嵌在圆弧形槽内,能够有效防止永磁钢在冲击电流的电枢反应作用下产生不可逆退磁,保证永磁钢不失磁,驱动电机气隙内的磁场由永磁钢和电励磁绕组共同提供,产生的磁场直接面对气隙,漏磁少。

Description

无刷电磁与隐形磁极复合励磁驱动电机
技术领域
本发明提供一种无刷电磁与隐形磁极复合励磁驱动电机,属于电动汽车电机电器技术领域。
背景技术
目前电动汽车上采用的永磁驱动电机的转子大多采用永磁体外嵌入式结构,如现有技术,专利名称:无刷直流电机转子,专利号:ZL200920116549.1,公开了如下技术方案,包括转子铁芯、转轴和永磁体,转子铁芯由冲片叠加组成并连成一体,转轴与转子铁芯固定连接,转子铁芯的外表面均匀分布有偶数个T形楔块,相邻T形楔块之间构成插槽,永磁体对应镶嵌在插槽内,该结构转子的永磁体直接面对气隙,在冲击电流的电枢反应作用下,可能产生不可逆退磁,永磁体一旦形成不可逆退磁,驱动电机效率降低,功率、扭矩迅速下降,其使用性能有待于进一步改进。
发明内容
本发明的目的是提供一种能克服上述缺陷,驱动电机气隙内的磁场由永磁钢和电励磁绕组共同提供,产生的磁场直接面对气隙,漏磁少的无刷电磁与隐形磁极复合励磁驱动电机,其技术内容为:
无刷电磁与隐形磁极复合励磁驱动电机由前端盖、后端盖、机壳、混合励磁转子、定子组成,其特征在于:混合励磁转子由无碳刷滑环结构的电励磁转子和隐形磁极转子组成;
隐形磁极转子由轴、矩形永磁钢、瓦片永磁钢、转子铁芯、梨形槽隔磁气隙组成,转子铁芯上均布有偶数个贯穿转子铁芯厚度的径向矩形槽,径向矩形槽的外端与转子铁芯的外圆之间不连通,在每个径向矩形槽的内端设有贯穿转子铁芯厚度的梨形槽隔磁气隙,梨形槽隔磁气隙的外端与径向矩形槽的内端连通,相邻的梨形槽隔磁气隙不连通,每隔两个径向矩形槽设有贯穿转子铁芯厚度的内圆弧面朝向转子铁芯外圆的圆弧形槽且圆弧形槽在相邻的两个径向矩形槽外端的中间,圆弧形槽与径向矩形槽不连通,圆弧形槽的两端与转子铁芯的外圆之间不连通;
将完全相同的两片矩形永磁钢分别安放在转子铁芯上的圆弧形槽两侧的两个径向矩形槽内且两片矩形永磁钢相对的侧面极性均为N极,然后将瓦片永磁钢按瓦片永磁钢内圆弧面极性为N极的方式安放在圆弧形槽内,相邻的S极与S极相对的两片矩形永磁钢的S极和瓦片永磁钢的S极均通过转子铁芯引到S极与S极相对的两片矩形永磁钢中间部分的转子铁芯上,形成隐形磁极的S极,转子铁芯压装在轴上。
工作原理:当驱动电机通入由三相逆变器经脉宽调制的三相交流电后,驱动电机定子产生空间旋转磁场,它与转子所产生的磁场相互作用,转子产生与定子绕组旋转磁场方向一致的旋转转矩,使驱动电机转子转动,进而驱动电动汽车运行。
本发明与现有技术相比,矩形永磁钢内嵌在径向矩形槽内,瓦片永磁钢内嵌在圆弧形槽内,能够有效防止永磁钢在冲击电流的电枢反应作用下产生不可逆退磁,保证永磁钢不失磁,驱动电机气隙内的磁场由永磁钢和电励磁绕组共同提供,产生的磁场直接面对气隙,漏磁少。
附图说明
图1是本发明实施例的结构示意图。
图2是图1所示实施例的永磁转子剖面图。
图中:1、后端盖2、轴3、机壳4、定子5、瓦片永磁钢6、转子铁芯7、梨形隔磁气隙8、矩形永磁钢9、前端盖。
具体实施方式
下面结合附图对本发明作进一步说明:
无刷电磁与隐形磁极复合励磁驱动电机由前端盖9、后端盖1、机壳3、混合励磁转子、定子4组成,其特征在于:混合励磁转子由无碳刷滑环结构的电励磁转子和隐形磁极转子组成;
隐形磁极转子由轴2、矩形永磁钢8、瓦片永磁钢5、转子铁芯6、梨形槽隔磁气隙7组成,转子铁芯6上均布有偶数个贯穿转子铁芯6厚度的径向矩形槽,径向矩形槽的外端与转子铁芯5的外圆之间不连通,在每个径向矩形槽的内端设有贯穿转子铁芯5厚度的梨形槽隔磁气隙7,梨形槽隔磁气隙7的外端与径向矩形槽的内端连通,相邻的梨形槽隔磁气隙7不连通,每隔两个径向矩形槽设有贯穿转子铁芯6厚度的内圆弧面朝向转子铁芯6外圆的圆弧形槽且圆弧形槽在相邻的两个径向矩形槽外端的中间,圆弧形槽与径向矩形槽不连通,圆弧形槽的两端与转子铁芯6的外圆之间不连通;
将完全相同的两片矩形永磁钢8分别安放在转子铁芯6上的圆弧形槽两侧的两个径向矩形槽内且两片矩形永磁钢8相对的侧面极性均为N极,然后将瓦片永磁钢5按瓦片永磁钢5内圆弧面极性为N极的方式安放在圆弧形槽内,相邻的S极与S极相对的两片矩形永磁钢8的S极和瓦片永磁钢5的S极均通过转子铁芯6引到S极与S极相对的两片矩形永磁钢8中间部分的转子铁芯6上,形成隐形磁极的S极,转子铁芯6压装在轴2上。

Claims (1)

1.一种无刷电磁与隐形磁极复合励磁驱动电机,由前端盖(9)、后端盖(1)、机壳(3)、混合励磁转子、定子(4)组成,其特征在于:混合励磁转子由无碳刷滑环结构的电励磁转子和隐形磁极转子组成;
隐形磁极转子由轴(2)、矩形永磁钢(8)、瓦片永磁钢(5)、转子铁芯(6)、梨形槽隔磁气隙(7)组成,转子铁芯(6)上均布有偶数个贯穿转子铁芯(6)厚度的径向矩形槽,径向矩形槽的外端与转子铁芯(5)的外圆之间不连通,在每个径向矩形槽的内端设有贯穿转子铁芯(5)厚度的梨形槽隔磁气隙(7),梨形槽隔磁气隙(7)的外端与径向矩形槽的内端连通,相邻的梨形槽隔磁气隙(7)不连通,每隔两个径向矩形槽设有贯穿转子铁芯(6)厚度的内圆弧面朝向转子铁芯(6)外圆的圆弧形槽且圆弧形槽在相邻的两个径向矩形槽外端的中间,圆弧形槽与径向矩形槽不连通,圆弧形槽的两端与转子铁芯(6)的外圆之间不连通;
将完全相同的两片矩形永磁钢(8)分别安放在转子铁芯(6)上的圆弧形槽两侧的两个径向矩形槽内且两片矩形永磁钢(8)相对的侧面极性均为N极,然后将瓦片永磁钢(5)按瓦片永磁钢(5)内圆弧面极性为N极的方式安放在圆弧形槽内,相邻的S极与S极相对的两片矩形永磁钢(8)的S极和瓦片永磁钢(5)的S极均通过转子铁芯(6)引到S极与S极相对的两片矩形永磁钢(8)中间部分的转子铁芯(6)上,形成隐形磁极的S极,转子铁芯(6)压装在轴(2)上。
CN201610314133.5A 2016-05-13 2016-05-13 无刷电磁与隐形磁极复合励磁驱动电机 Pending CN105743312A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109951040A (zh) * 2019-04-23 2019-06-28 山东理工大学 电动汽车用间隔磁极组合式永磁驱动电机

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JPH07336980A (ja) * 1994-06-01 1995-12-22 Nippondenso Co Ltd ブラシレスdcモータ
CN102647067A (zh) * 2012-04-21 2012-08-22 山东理工大学 径向和切向永磁与电磁混合励磁发电机
CN105811704A (zh) * 2016-05-11 2016-07-27 山东理工大学 复合永磁隐形磁极与无刷电磁混合励磁驱动电机

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
JPH07336980A (ja) * 1994-06-01 1995-12-22 Nippondenso Co Ltd ブラシレスdcモータ
CN102647067A (zh) * 2012-04-21 2012-08-22 山东理工大学 径向和切向永磁与电磁混合励磁发电机
CN105811704A (zh) * 2016-05-11 2016-07-27 山东理工大学 复合永磁隐形磁极与无刷电磁混合励磁驱动电机

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109951040A (zh) * 2019-04-23 2019-06-28 山东理工大学 电动汽车用间隔磁极组合式永磁驱动电机

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