CN106533006A - 高速无刷电机转子 - Google Patents

高速无刷电机转子 Download PDF

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Publication number
CN106533006A
CN106533006A CN201611077391.2A CN201611077391A CN106533006A CN 106533006 A CN106533006 A CN 106533006A CN 201611077391 A CN201611077391 A CN 201611077391A CN 106533006 A CN106533006 A CN 106533006A
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CN
China
Prior art keywords
magnet steel
rotor
magnetic
magnetic steel
pieces
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201611077391.2A
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English (en)
Inventor
吴晓峰
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Zhejiang Linix Motor Co Ltd
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Zhejiang Linix Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Linix Motor Co Ltd filed Critical Zhejiang Linix Motor Co Ltd
Priority to CN201611077391.2A priority Critical patent/CN106533006A/zh
Publication of CN106533006A publication Critical patent/CN106533006A/zh
Priority to KR1020170147548A priority patent/KR20180062351A/ko
Priority to US15/825,886 priority patent/US20180152065A1/en
Pending legal-status Critical Current

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Classifications

    • 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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/278—Surface mounted magnets; Inset magnets
    • H02K1/2781—Magnets shaped to vary the mechanical air gap between the magnets and the stator
    • 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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/278—Surface mounted magnets; Inset magnets
    • 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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2746—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets arranged with the same polarity, e.g. consequent pole type
    • 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
    • H02K1/00—Details of the magnetic circuit
    • H02K1/02—Details of the magnetic circuit characterised by the magnetic material
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

Landscapes

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

Abstract

本发明的目的是提供一种能使电机出力和功率密度大大提高的高速无刷电机转子。为实现上述目的，本发明采用如下技术方案：一种高速无刷电机转子，包括转子铁芯和若干成对设置的磁极，每个磁极至少设有两块极性相同并沿转子外缘圆周方向分布的磁钢，每个磁极的磁钢数量相同，每块磁钢均呈弧形设置，且每块磁钢的大小和结构相同。当每极有多块磁钢时，虽然磁钢仍是平行充磁，但能达到径向充磁的效果，电机的气隙波形的波峰和波谷均构成m形，反电势波形的波峰和波峰均具有梯形结构。本发明通过使每个磁极由多块同极性磁钢组成，以使电机气隙间隙变小，并使反电势波形呈类梯形波，使得漏磁较少，以提高本发明电机的出力及功率密度。

Description

高速无刷电机转子
技术领域
本发明涉及一种无刷电机，具体涉及无刷电机的转子。
背景技术
传统的无刷电机，尤其是2极电机、4极电机，其转子的每个磁极均只有一块磁钢，所产生的气隙间隙较大、气隙磁场链较长、漏磁较多、磁场链的力较小，导致转子、定子的动能或电能传递效率较低，即电机出力和功率密度较小。
发明内容
本发明的目的是提供一种能使电机出力和功率密度大大提高的高速无刷电机转子。
为实现上述目的，本发明采用如下技术方案：一种高速无刷电机转子，包括转子铁芯和若干成对设置的磁极，每个磁极至少设有两块极性相同并沿转子外缘圆周方向分布的磁钢，每个磁极的磁钢数量相同，每块磁钢均呈弧形设置，且每块磁钢的大小和结构相同。
由于每块磁钢都是平行充磁的，当每极只有一块磁钢时，电机的气隙波形和反电势波形都呈正弦状；当每极有多块磁钢时，虽然是平行充磁的，但能达到径向充磁的效果，电机的气隙波形的波峰和波谷均构成m形，反电势波形的波峰和波峰均具有梯形结构，波长更长，通磁更大。本发明通过使每个磁极由多块同极性磁钢组成，以使电机气隙间隙变小，并使反电势波形呈类梯形波，使得漏磁较少、通磁更大，以提高本发明电机的出力及功率密度。
作为优选，相邻磁钢拼接以构成圆环形结构。
作为优选，所有磁钢呈以转子轴轴线为中点的环形间隔均匀设置。根据需要将本发明的磁钢相连以构成环形，或相邻磁钢间隔设置。
作为优选，相邻磁钢的相邻端面相接触，相邻磁钢的相接面与转子的转子冲片半径线重叠。上述设置保证本发明磁钢的设置均匀。
作为优选，每个磁极的磁钢数量为两块。
本发明每个磁极都设置至少两个磁钢，使充磁方式接近径向充磁，能得到径向充磁的效果，且气隙波形和反电势波形也随之发生改变；本发明电机的气隙波形的波峰和波谷均构成m形（类似两个相连的梯形），反电势波形的波峰和波峰均具有梯形结构（类似两个梯形及两个梯形间的V形波形，或三个相连的梯形），波长更长，通磁率更高。本发明通过使每个磁极由多块同极性磁钢组成，以使电机气隙间隙变小，并使反电势波形呈类梯形波，使得漏磁较少，以提高本发明电机的出力及功率密度。
附图说明
图1为本发明的磁钢的一种结构示意图；
图2为本发明的磁钢的充磁方式的示意图；
图3为本发明电机的气隙波形示意图；
图4为本发明电机的反电势的波形示意图。
具体实施方式
下面根据附图和具体实施方式对本发明作进一步描述。
由图1所示，本发明的二级电机的高速无刷电机转子，包括转子铁芯和一对磁极，S极和N极均设有两块极性相同的磁钢1，转子铁芯由若干转子冲片2层叠而成，四个磁钢1形状结构大小均相同，且四个磁钢1均沿转子外缘圆周方向分布。每块磁钢1均呈弧形设置，两个磁极的磁钢1拼接以构成环形结构，相邻磁钢1的相邻端面相接触，且相邻磁钢1的相接面与转子冲片2的半径线重叠。
由图2所示，每个磁钢都是平行充磁的，由于每极磁钢数量为两个以上，充磁方式接近径向充磁，能得到径向充磁的效果，且气隙波形和反电势波形也随之发生改变；如图3和图4所示，本发明电机的气隙波形的波峰和波谷均构成m形（类似两个相连的梯形），反电势波形的波峰和波峰均具有梯形结构（类似两个梯形及两个梯形间的V形波形，或三个相连的梯形），波长更长，通磁率更高。本发明通过使每个磁极由多块同极性磁钢组成，以使电机气隙间隙变小，并使反电势波形呈类梯形波，使得漏磁较少，以提高本发明电机的出力及功率密度。

Claims (5)

1.一种高速无刷电机转子，其特征在于包括转子铁芯和若干成对设置的磁极，每个磁极至少设有两块极性相同并沿转子外缘圆周方向分布的磁钢，每个磁极的磁钢数量相同，每块磁钢均呈弧形设置，且每块磁钢的大小和结构相同。
2.根据权利要求1所述的高速无刷电机转子，其特征在于相邻磁钢拼接以构成圆环形结构。
3.根据权利要求1所述的高速无刷电机转子，其特征在于所有磁钢呈以转子轴轴线为中点的环形间隔均匀设置。
4.根据权利要求2所述的高速无刷电机转子，其特征在于相邻磁钢的相邻端面相接触，相邻磁钢的相接面与转子的转子冲片半径线重叠。
5.根据权利要求1所述的高速无刷电机转子，其特征在于每个磁极的磁钢数量为两块。
CN201611077391.2A 2016-11-30 2016-11-30 高速无刷电机转子 Pending CN106533006A (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201611077391.2A CN106533006A (zh) 2016-11-30 2016-11-30 高速无刷电机转子
KR1020170147548A KR20180062351A (ko) 2016-11-30 2017-11-07 고속 브러시리스 모터 회전자
US15/825,886 US20180152065A1 (en) 2016-11-30 2017-11-29 Rotors for high-speed brushless motors

Applications Claiming Priority (1)

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CN201611077391.2A CN106533006A (zh) 2016-11-30 2016-11-30 高速无刷电机转子

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220149704A1 (en) * 2020-11-09 2022-05-12 Global Mixed-Mode Technology Inc. Motor controller
CN115189496A (zh) * 2022-09-08 2022-10-14 北京伯肯当代氢燃料电池实验室有限公司 一种超高速转子及超高速氢气循环泵

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CN206180724U (zh) * 2016-11-30 2017-05-17 浙江联宜电机有限公司 高速无刷电机转子

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CN105743249A (zh) * 2015-11-28 2016-07-06 贵州航天林泉电机有限公司 一种无刷直流电动机转子
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220149704A1 (en) * 2020-11-09 2022-05-12 Global Mixed-Mode Technology Inc. Motor controller
US11791696B2 (en) * 2020-11-09 2023-10-17 Global Mixed-Mode Technology Inc. Motor controller
CN115189496A (zh) * 2022-09-08 2022-10-14 北京伯肯当代氢燃料电池实验室有限公司 一种超高速转子及超高速氢气循环泵

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US20180152065A1 (en) 2018-05-31
KR20180062351A (ko) 2018-06-08

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Application publication date: 20170322