CN101207309A - High speed magnetic suspension permanent magnet motor without bearing - Google Patents

High speed magnetic suspension permanent magnet motor without bearing Download PDF

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Publication number
CN101207309A
CN101207309A CN 200710158771 CN200710158771A CN101207309A CN 101207309 A CN101207309 A CN 101207309A CN 200710158771 CN200710158771 CN 200710158771 CN 200710158771 A CN200710158771 A CN 200710158771A CN 101207309 A CN101207309 A CN 101207309A
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China
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rotor
permanent magnet
high
motor
magnetic
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CN 200710158771
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Chinese (zh)
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孔晓光
鸣 宗
张凤阁
王凤翔
王大鹏
王天煜
邢军强
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沈阳工业大学
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Priority to CN 200710158771 priority Critical patent/CN101207309A/en
Publication of CN101207309A publication Critical patent/CN101207309A/en

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Abstract

The invention relates to a high-speed magnetic-suspension bearing-free permanent-magnetic machine, which comprises a shell, a stator core, a stator winding, a permanent-magnetic rotor, a rotating shaft, a left terminal cover, a right terminal cover, a left standby bearing and a right standby bearing. The stator core is divided into a right section and a left section and is provided with a groove that is used for holding the stator winding on the radial inner side and the radial outer side. The stator winding consists of a set of double-pole torque windings that are used for producing the electromagnetic torque and two sets of four-pole magnetic-suspension windings that are used for producing the rotor suspension force. The permanent-magnetic rotor consists of a permanent-magnet of a radial magnet-charging integral structure, a high-strength magnetic-conductive sheath and a fastening piece. The standby bearings are used for supporting the rotor when the high-speed motor is not powered on. The invention integrates the magnetic-suspension bearing and the permanent-magnetic machine, so that the stator and the rotor of the machine not only can produce the electromagnetic torque that drives the rotation of the motor, but also can produce the magnetic-suspension force that supports the weight of the rotor, thereby simplifying the structure of the machine, shortening the axial length of the machine, increasing the stiffness and the critical rotating speed of the rotor of the high-speed machine, and improving the stability of the operation.

Description

高速磁悬浮无轴承永磁电机 No high-speed magnetic levitation bearing permanent magnet motor

技术领域 FIELD

本发明属于一种电机,特别涉及一种高速磁悬浮无轴承永磁电机。 The present invention resides in a machine, in particular relates to a high-speed permanent magnet motor Bearingless. 该电机采用了具有整体结构的永磁体和导磁性护套的转子,定子具有2极转矩绕组和4极悬浮力绕组,转子依靠电机本身产生的悬浮力支撑,不需要轴承,特别适合用作高速电机使用。 The motor uses a permanent magnet rotor having an integral structure and permeability of the sheath 2 having a stator pole and 4-pole winding torque windings suspension force, relying on the rotor supporting levitation force generated by the motor itself, no bearing is particularly suitable as High-speed motors.

背景技术 Background technique

高速电机由于转速高,功率密度大,其几何尺寸远小于输出相同功率的中低速电机,可以有效地节约材料;与原动机或负载直接相连,省去了机械变速装置,因而可减小噪音和提高传动系统效率。 Due to the high speed motor speed, high power density, the geometry of which is much smaller than in low-speed motor of the same power output, can effectively save material; directly connected to the prime mover or the load, eliminating the mechanical transmission, which can reduce noise and improve the efficiency of the transmission system. 高速电机的应用领域越来越为广泛,如高速磨床等加工机床,高速飞轮储能系统,天然气输送及污水处理中高速离心压缩机和鼓风机,以及微型燃气轮机驱动高速发电机分布式供电系统等。 More applications for a wide range of high-speed motor, such as high speed grinders and other machine tools, high speed flywheel energy storage system, and a sewage treatment gas transportation speed centrifugal compressor and blower, and driven high speed generator distributed microturbine power supply system.

由于永磁电机具有力能密度大、效率高和无刷等优点,成为高速电机的首选结构。 Since the permanent magnet motor has a force and energy density, high efficiency and brushless, etc., the preferred structure of the high-speed motor. 然而, 高速电机转速高达每分钟数万转甚至十几万转,圆周速度可达200m/s以上,永磁体难以承受高速旋转离心力产生的巨大拉应力, 一般需要采用非导磁高强度合金材料制造的护套保护永磁体。 However, high speed motor speed of up to tens of thousands or even hundreds of thousands of revolutions per minute, rpm, peripheral speed of up to 200m / s or more, permanent magnets bear great tensile stress generated by the high speed rotation centrifugal force, the general need for producing a high strength non-magnetic alloys sheath protecting permanent magnets. 同时,传统的机械轴承用于高速电机将很快被磨损,需要采用非机械接触式轴承。 Meanwhile, a conventional mechanical bearing for high speed motor will soon be worn, we need to use non-mechanical-contact bearings. 磁悬浮轴承较适合于高速电机,但其结构类似于一台电机,在高速电机两端安装磁悬浮轴承, 不仅结构复杂,而且使电机的轴向长度大为增加,从而降低了电机转子的刚度和临界转速, 不利于高速电机的稳定运行。 More magnetic bearings suitable for high speed motors, but its structure is similar to a motor mounted on both ends of magnetic bearing high-speed motor, the structure is not only complicated, but also the axial length of the motor is greatly increased, thereby reducing the stiffness and the critical rotor speed is not conducive to the stable operation of high-speed motor.

发明内容 SUMMARY

本发明是针对高速永磁电机的特殊结构,提出了一种将磁悬浮轴承与永磁电机集成于一体的高速无轴承永磁电机设计方案。 The present invention is directed to the special structure of the high-speed permanent magnet motor, the magnetic bearing proposed a permanent magnet motor with a high-speed integrated in one bearingless permanent magnet motor design.

发明提出的高速磁悬浮无轴承永磁电机是一种同步电机,由机壳、定子铁心、定子绕组、永磁转子、转轴、左右2个端盖和2个备用轴承组成。 Proposed invention Bearingless high speed permanent magnet motor is a synchronous motor, a housing, a stator core, stator windings, a permanent magnet rotor, shaft, around two end caps and two back-up bearing components. 定子铁心分为左右两段,皆由低' 损耗电工钢片叠压而成,铁心径向内外侧开有放置定子绕组的槽。 The stator core is divided into two left and right, rests low 'loss electrical steel sheets laminated together, the outer slotted core disposed radially inside the stator winding. 定子绕组有三套, 一套是用以产生电磁转矩的2极转矩绕组,另外两套是用以产生转子悬浮力的4极悬浮力绕组。 There are three sets of stator windings, a torque is to generate a 2-pole winding electromagnetic torque, is used to generate additional two 4-pole winding rotor suspension force levitation force. 永磁转子由径向充磁整体结构的永磁体、高强度导磁合金钢护套以及紧固件组成,备用轴承为具有内外环和滚珠的机械接触式轴承,用以高速电机未通电运行时支撑转子,防止转子外表面与定子内表面直接接触。 The permanent magnet rotor by the radial structure of the entire charge of the permanent magnet magnetic, high strength magnetic alloy sheath and a fastener composed of alternate bearing having inner and outer ring and a ball bearing mechanical contact, high-speed motor is not energized to run supporting the rotor, to prevent direct contact with the inner surface of the outer surface of the rotor and the stator.

本发明高速磁悬浮无轴承永磁电机各零部件之间的连接关系为:在机壳的左右两端部位分别放置由低损电工钢片叠压而成的定子铁心,两段铁心具有相同结构且槽的位置沿轴向对准。 The present invention is a high-speed magnetic levitation bearing no connection relationship between the various parts of the permanent magnet motor: placing a low-loss electrical steel laminated stator core from both ends of the left and right housing portions, respectively, having the same structure and two core the axially aligned position of the groove. 环形结构的2极转矩绕组下层线圈边从左端定子铁心内侧槽中穿过,然后穿入右端铁心内侧槽,而后经位于定子铁心外侧槽中的上层线圈边返回。 2-pole winding torque lower coil through the annular structure from the inside edge of the stator core slots left, right and penetrating the inner core groove and then back through the side slots of the stator core outer side of the upper coil. 环形结构的两个4极悬浮力绕组的下层边,分别放置在左右两段定子铁心内侧槽中,而上层边分别放置在左右两段定子铁心外侧槽中。 Two 4-pole suspension force lower annular winding side of the structure, are disposed around two inner slots of the stator core, respectively, while the upper edge is placed around two outer slots of the stator core. 在机壳内定子铁心的两端分别放置左端盖和右端盖,用以固定左右两个备用轴承, 两个备用轴承的内环与电机转子左右紧固件之间有一定的间隙,当电机转子处于悬浮状态时, 备用轴承内环不随转子一起转动,只有当电机不运行转子未处于悬浮状态时,备用轴承内环才与转子左右紧固件接触而承受转子重量,在电机转轴的中部安放整体结构径向充磁的环状永磁体,永磁体外部安放用以保护永磁体的高强度导磁合金钢套,永磁体与护环之间采用过盈配合,使护环对永磁体产生所需要的预压力,永磁体的两端分别采用高强度非导磁合金钢紧固件将永磁体、护环与转轴连接为一体。 Both ends of the stator core in the housing are disposed left and right cover cap for a certain fixed gap left between the two back-up bearing, the inner ring and two backup bearings rotor about the fastener, when the motor rotor when in suspension, the spare inner bearing ring does not rotate with the rotor, not only when the motor rotor is not operating in suspension, spare inner bearing ring only in contact with the fastener bear weight of the rotor about the rotor, placed in the middle of the overall motor shaft outer annular structures radially magnetized permanent magnet, the permanent magnet to protect the permanent magnets placed high strength magnetic steel sleeve, an interference fit between the permanent magnet and the grommet, the grommet so that the permanent magnets of desired preload, both ends of the permanent magnets are made of high strength non-magnetic steel fasteners permanent magnets, the grommet is integrally connected with the shaft. 转轴的一端用于连接原动机或机械负载。 End of the shaft for connecting a mechanical load or prime mover.

本发明的有益效果是: Advantageous effects of the invention are:

1、 高速电机一般采用油轴承、空气轴承和磁悬浮轴承。 1, commonly used high-speed motor oil bearings, air bearings and magnetic bearings. 油轴承和空气轴承是通过在轴承的定转子之间充油或空气,用以支撑电机转子系统重量,不仅轴承损耗较大,而且承载力难以控制,而真正实现非接触和承载力可控的是磁悬浮轴承。 Oil bearings and air bearings or air through the oil filled between the stator and rotor bearing for supporting the weight of the motor rotor system, bearing loss is not only large, but also the bearing capacity is difficult to control, and truly non-contact bearing capacity and controlled a magnetic bearing. 然而,磁悬浮轴承的结构类似于一台电机,在高速电机两端安装磁悬浮轴承,不仅结构复杂,而且使电机的轴向长度大为增加,从而降低了电机转子的刚度和临界转速,不利于高速电机的稳定运行。 However, the structure is similar to a magnetic bearing motor, magnetic bearings mounted on both ends of the high-speed motor, the structure is not only complicated, but also the axial length of the motor is greatly increased, thereby reducing the stiffness and the critical speed of the rotor, it is not conducive to high speed stable motor operation. 本发明是将磁悬浮轴承与永磁电机集成于一体,使电机的定转子既能产生驱动电机旋转的电磁转矩,又能产生支撑转子重量的磁悬浮力,不仅简化了高速电机的结构,而且由于省去了磁力轴承使电机轴向尺寸缩短,从而增加了高速电机转子系统的刚度和临界转速,提高了其运行稳定性。 The present invention is a permanent magnet motor and the magnetic bearings are integrated in the rotor so that the motor driving both the electromagnetic torque of the motor rotation, the rotor can produce levitation force supporting the weight, not only simplifies the structure of the high-speed motor, and because eliminating the magnetic bearings the axial dimension of the motor is shortened, thereby increasing the stiffness and the critical speed of the high speed rotor system, improve its operational stability.

2、 高速永磁电机通常采用高强度非导磁套筒保护永磁体,然而,由于护套和永磁体的导磁率很小,使定子悬浮力绕组电流产生的磁场难以进入转子,故产生的悬浮力较小难以支撑电机转子系统的重量。 2, high-speed permanent magnet motor is usually made of high strength non-magnetic sleeve protected the permanent magnets, however, since the magnetic permeability of the sheath is small and the permanent magnet, the magnetic field of the stator winding current suspension force generated by the rotor is difficult to enter, so the resulting suspension force is small it is difficult to support the weight of the motor rotor system. 本发明采用了具'有导磁性的高强度合金钢护套,为定子悬浮力绕组电流产生的磁场提供了通路,可产生足够强的悬浮力支撑转子,解决了永磁转子电机难以实现转子磁悬浮的技术关键。 The present invention employs having 'high intensity magnetic permeability steel sheath provides access to the magnetic field of the stator winding current generated levitation force, can produce a strong enough force to support the rotor suspension, the solution is difficult to achieve the permanent magnet rotor motor rotor magnetic levitation the key technology.

3、 无轴承电机一般选取(2p+2)极的定子转矩绕组和2p极的悬浮力绕组,最常见的是4极转矩绕组和2极悬浮力绕组。 3, generally selected bearingless motor (2p + 2) stator pole winding torque and suspension force winding 2p-pole, 4-pole is the most common and torque winding 2-pole winding suspension force. 根据高速永磁电机的特点,本发明采用2极转矩绕组和4 极悬浮力绕组, 一方面降低了定子绕组电流频率和减小了电机损耗,另一方面,使得采用整 The characteristics of high-speed permanent magnet motor, the present invention is a 2-pole and 4-pole winding torque of the winding suspension force, while reducing the frequency of the stator winding current and reduce motor loss, on the other hand, making use of the entire

体结构的永磁转子成为可能,简化了永磁转子制造工艺和提高了电机的运行可靠性。 Permanent magnet rotor structure becomes possible to simplify the manufacturing process of the permanent magnet rotor and improving the reliability of the motor.

4、 考虑到高速电机转子细而长,必须在电机的轴向两端分别进行径向悬浮力控制,为此, 定子铁心分为左右两段,采用两个悬浮力绕组分别对电机转子左右两端进行悬浮力控制。 4, considering the high speed rotor thin and long, radial suspension forces must be controlled in both axial ends of the motor, respectively, for this purpose, the stator core is divided into two left and right, using the two right and left suspension force on each rotor winding two end of the suspension force control. 而电机转矩采用了单一转矩绕组的统一控制。 The motor torque using a single unified control torque winding. 电机的转子不分段,便于加工制造。 Non-segmented rotor of the motor, to facilitate manufacturing. 两段定子铁心的中间空余空间, 一方面用于放置两悬浮力绕组的端部,另一方面用于冷却风道,解决高速永磁转子轴向较长中部冷却条件较差容易过热的问题。 Two intermediate empty space of the stator core, on the one hand for placing the ends of the two windings suspension force, on the other hand for the cooling air ducts, the high-speed permanent magnet rotor problem long axial central cooling conditions of poor prone to overheating.

5、 本发明采用了在电机左右端盖装设了备用轴承,其内环与电机转子紧固件之间有一定的间隙,当电机转子处于悬浮状态时,备用轴承内环不随转子一起转动,只有当电机不运行转子未处于悬浮状态时,备用轴承内环才与转子左右紧固件接触而承受转子重量,允许转子低速转动,便于高速电机的安装调试。 5, the present invention employs a motor cover is mounted around the back-up bearing, there is a certain gap between the rotor and the inner ring of the fastener, when the rotor is in a suspended state, the spare inner bearing ring does not rotate with the rotor, only when the motor is not running rotor is not in a suspended state, the spare inner bearing ring only in contact with the fastener bear weight of the rotor about the rotor, to allow rotation of the rotor low-speed, high-speed motor to facilitate installation.

附图说明 BRIEF DESCRIPTION

图1为本发明无轴承高速永磁电机轴向剖面示意图; FIG 1 bearingless motor speed permanent magnet axial sectional view of the present invention;

图2为本发明无轴承高速永磁电机径向剖面示意图; FIG 2 speed permanent magnet motor without radial sectional view of the bearing of the present invention;

图3为本发明定子2极转矩绕组和4极悬浮力绕组空间分布结构示意图; FIG 3 the stator winding 2-pole and 4-pole torque winding space structure suspension force distribution diagram of the present invention;

图4为通过悬浮力绕组电流产生x方向悬浮力原理示意图; FIG 4 is a levitation force generated by the x-direction winding current Schematic levitation force;

图5为通过悬浮力绕组电流产生y方向悬浮力原理示意图。 5 is the y-direction to generate a suspension force levitation force Schematic winding current.

图中:l一机壳,2—左侧定子铁心,3—右侧定子铁心,4一转矩绕组,4a—转矩绕组上层边,4b—转矩绕组下层边,5—左侧悬浮力绕组,5a、 6a—悬浮力绕组上层边,5b、 6b—悬浮力绕组下层边,6—右侧悬浮力绕组,7—左端盖,8—右端盖,9一左侧备用轴承,10_右侧备用轴承,ll一永磁体,12—导磁护套,13—永磁体左端紧固件,14一永磁体右端紧固件, 15—转轴,16—代表气隙磁场减小,17—代表永磁体磁场方向,18—代表气隙磁场增加。 FIG: l a housing, 2 the left side of the stator core, the stator core right 3-, 4 a winding torque, the upper edge 4a- torque windings, the winding torque 4b- lower edge, the left suspension force 5- winding, 5a, 6a- suspension force windings upper edge, 5b, 6b- suspension force lower side of the winding, the right suspension force windings 6-, 7- cover left, 8 right end cover, a left side of the back-up bearing 9, the right 10_ side of the back-up bearing, ll a permanent magnet, magnetic sheath 12-, 13- left fastener permanent magnet, a permanent magnet right fastener 14, the shaft 15, 16 a magnetic field representative of the air gap decreases, the representative 17- permanent magnetic field direction, the magnetic field 18 representative of the air gap increases.

具体实施方式 Detailed ways

下面结合附图对本发明电机做进一步说明。 BRIEF below further illustrated the present invention in conjunction with the motor.

图1为本发明无轴承高速永磁电机轴向剖面示意图,图2为本发明无轴承高速永磁电机径向剖面示意图。 FIG 2 of the present invention high speed permanent magnet motor without radial bearings sectional schematic cross-sectional schematic diagram of a high speed permanent magnet motor axial bearing 1 of the present invention. 其中1为电机机壳,用以固定电机的定子铁心和左右端盖;2为左侧定子铁心;3为右侧定子铁心;4为用以产生电磁转矩的2极环形绕组结构转矩绕组,其下层边和上层边分别放在定子铁心径向内外侧的槽中;5为4极环形结构左侧悬浮力绕组,用以产生电机转子左侧悬浮力,其下层和上层线圈边分别放在左侧定子铁心2的径向内外侧的槽中;6 Wherein the motor housing 1 to fix the motor stator core and a cover around; the left side of the stator core 2; 3 is a right side of the stator core; 2 4-pole winding configuration of the torque ring winding for generating electromagnetic torque its lower side and the upper side were placed inside the stator core slots radially outward; 4-pole annular structure 5 is left suspension force windings for generating a motor left suspension force of the rotor, the lower layer and the upper coil pieces were placed radially outer groove of the stator core 2 in the left; 6

为4极环形结构右侧悬浮力绕组,用以产生电机转子由侧悬浮力,其下层和上层线圈边分别放在右侧定子铁心3的径向内外侧的槽中;7为左端盖,用以固定左侧备用轴承;8为右端盖, 用以固定右侧备用轴承;9为左侧备用轴承;IO为右侧备用轴承;11为为整体结构的永磁体; 12为导磁高强度合金钢护套,用以保护永磁体;13和14为用以连接永磁体、护套和转轴的紧固件,由非导磁高强度合金钢制造;15为高速电机的转轴。 Is a 4-pole configuration right suspension force annular winding, for generating a motor rotor side suspension forces, its lower and upper coils respectively on the right side of the stator core radially outside of the inner tank 3; 7 is a left end cover, with to secure the left side back-up bearing; 8 is a right end cover for fixing the right alternate bearing; standby 9 is a left side bearing; right side up bearing the IO; 11 overall configuration of permanent magnets; 12 is a magnetic high-strength alloy steel sheath to protect the permanent magnets; 13 and fasteners 14 to the permanent magnets, the sheath and the shaft, a non-magnetic high-strength alloy steel; high-speed motor shaft 15.

当高速永磁电机作发电机运行时,转轴右端通过连轴器与驱动机械连接,被驱动机械拖动高速旋转的永磁转子产生的旋转磁场,在定子绕组中产生电动势,由转矩绕组向外电路输出交流电能。 When the high-speed permanent magnet motor running as a generator, through the right end of the rotary shaft and the drive shaft connected mechanically connected, the rotating magnetic field of the permanent magnet rotor is rotated at high speed driving mechanism to drag generated electromotive force is generated in the stator winding, the winding of the torque AC power output of an external circuit. 当永磁电机作为电动机运行时,由变频交流电源向定子转矩绕组供电驱动永磁转子高速旋转,通过与转轴右端的连接器带动负载机械旋转。 When operating as an electric motor while the permanent magnet motor, a variable frequency AC power to the drive torque to the stator windings of the permanent magnet rotor rotates at high speed, the mechanical load driven by the rotary shaft connected with the right end.

悬浮力绕组与转矩绕组具有不同的极数,它们在定子铁心中的空间分布结构示意图如图3所示,悬浮力绕组用以产生支撑电机转子的磁悬浮力。 Winding the levitation force and torque winding having different numbers of poles, which are distributed in the space of the stator iron core structure diagram shown in Figure 3, suspension force windings for generating the magnetic floating force to support the motor rotor. 如图4所示,通过给4级悬浮力绕组通以如图所示的电流,悬浮力绕组电流产生的磁场与转子永磁体产生的磁场相叠加,在电机定转子之间左侧气隙磁场减弱而右侧气隙磁场增强,定转子之间电磁吸力与气隙磁通密度的平方成正比,故电机转子将受到一个图中由左向右水平方向(x轴方向)的电磁力尸x。 4, the suspension force to stage 4 as shown in FIG Windings current through the magnetic field of the permanent magnet rotor winding current generation suspension force generated is superimposed on the left side of the air gap between the stator and rotor magnetic motor right reinforcing weakened gap magnetic field, magnetic attraction is proportional to the square of the gap magnetic flux density between the stator and rotor, so that the motor rotor will be a dead FIG electromagnetic force from left to right in the horizontal direction (x axis direction) x . 同理可产生垂直方向(y轴方向)的电磁力Fy,如图5所示。 The same can be produced in the vertical direction (y axis direction) electromagnetic force Fy, as shown in FIG. 只要实时检测高速电机转子的位置,便可根据需要调整转子位移的方向,通过控制悬浮力绕组的电流产生所要求的悬浮力, 使转子始终处于悬浮状态而定转子之间的气隙均匀。 As long as the high-speed real-time detection of the position of the motor rotor, the rotor can be adjusted according to the direction of displacement, to generate a suspension force required by the current control of the winding force of the suspension, the rotor may be always in a uniform suspension gap between the rotors. 电机的备用轴承内环与转子紧固件之间有一定的间隙,当电机转子处于悬浮状态时,备用轴承内环不随转子转动,只有当电机不运行转子未处于悬浮状态时,备用轴承内环才与转子紧固件接触而承受转子重量,以防止电机转子表面与定子铁心内表面的直接接触。 There is a certain clearance between the rotor and the inner bearing ring fastener standby motor, when the rotor is in a suspended state, the spare inner bearing ring does not rotate with the rotor, not only when the motor rotor is not operating in suspension, spare inner bearing ring It was subjected to contact with the rotor while the rotor wt fastener, to prevent direct contact with the inner surface of the motor rotor and the stator core surface.

Claims (6)

1、一种高速磁悬浮无轴承永磁电机,包括机壳、定子铁心、定子绕组、永磁转子、转轴、左右两个端盖和两个备用轴承,其特征在于定子铁心分为左右两段,铁心径向内外侧开有放置定子绕组的槽,永磁转子由永磁体、高强度导磁合金钢护套及紧固件组成,在机壳的左右两端部位分别放置定子铁心,两段铁心具有相同结构且槽的位置沿轴向对准,环形结构的2极矩绕组下层线圈边从左端定子铁心内侧槽穿过,然后穿入右端铁心内侧槽,经位于定子铁心外侧槽中的上层线圈边返回,环形结构的4极悬浮力绕组的下层边,分别放置在左右两段定子铁心内侧槽中,而上层边分别放置在左右两段定子铁心外侧槽中,在机壳内定子铁心的两端分别放置左端盖和右端盖,在左、右端盖上分别固定左、右两个备用轴承,在电机转轴的中部安放永磁体,永磁体两端采 1, a high-speed permanent magnet motor Bearingless, includes a housing, a stator core, stator windings, a permanent magnet rotor, shaft, left and right two end caps and two back-up bearing, wherein the stator core is divided into two right and left, grooves disposed outside the stator winding is opened radially inner core, the permanent magnet rotor of a permanent magnet, a high strength magnetic alloy consisting of sheath and fasteners, are placed around the stator core at both end portions of the housing, respectively, two core location having the same structure and axially aligned slots, the lower coil 2 quadrupole winding configuration of the annular groove from the inner side of the left through the stator core, the core and the inner groove penetrates the right, the outside of the stator core slots upper coil Back side of the lower electrode 4 suspension force winding side annular structures, are placed around two inner slots of the stator core, respectively, while the upper edge is placed around two outer slots of the stator core, the stator core two housing end cap were placed left and right end caps, the left and right ends fixed respectively cover the left and right two back-up bearing, the permanent magnet mounted in the middle of the motor shaft, both ends of the permanent magnet taken 紧固件将永磁体、护环与转轴连接为一体。 Fastening the permanent magnets, the grommet is integrally connected with the shaft.
2、 如权利要求1所述的高速磁悬浮无轴承永磁电机,其特征在于所述定子绕组为三套, 一套2极转矩绕组用以产生电磁转矩,二套4极悬浮力绕组用以产生转子悬浮力。 2, as claimed in claim 1, said high-speed magnetic levitation bearing no permanent magnet motor, wherein the stator winding is a three, a two-pole electromagnetic torque winding for generating torque, two sets of four-pole windings suspension force a suspension rotor to generate a force.
3、 如权利要求1所述的高速磁悬浮无轴承永磁电机,其特征在于所述定子铁心分为左、 右两段,皆由低损耗电工钢片叠压而成。 3, a high-speed magnetic levitation as claimed in claim 1 bearingless permanent magnet motor, wherein said stator core is divided into left and right two, chosen from low-loss electrical steel sheet of laminated.
4、 如权利要求1所述的高速磁悬浮无轴承永磁电机,其特征在于所述备用轴承为具有内外环和滚珠结构的轴承,用以高速电机未通电运行时支撑转子,防止转子外表面与定子内表面直接接触。 4, a high-speed magnetic levitation as claimed in claim 1 bearingless permanent magnet motor, characterized in that said back-up bearing having inner and outer ring and the ball bearing structure for supporting the rotor at a high speed the motor is not energized to run, and to prevent the outer surface of the rotor direct contact with the surface of the stator.
5、 如权利要求4所述的高速磁悬浮无轴承永磁电机,其特征在于所述两个备用轴承的内环与电机转子左右紧固件之间有间隙。 5, a high speed as claimed in claim 4, wherein the free magnetic levitation bearing permanent magnet motor, wherein a gap between the two back-up bearing inner ring and the rotor around the fastener.
6、 如权利要求1所述的高速磁悬浮无轴承永磁电机,其特征在于所述永磁转子的永磁体为整体结构径向充磁的环状永磁体,护环是在永磁体外部安放用以保护永磁体的高强度导磁合金钢套,永磁体与护环之间采用过盈配合。 6, a high-speed magnetic levitation as claimed in claim 1 bearingless permanent magnet motor, wherein the permanent magnet rotor of the permanent magnet for magnetizing the entire radial annular configuration of permanent magnets, the grommet is mounted with the outer permanent magnet high strength steel cover protects the permanent magnetic body, an interference fit between the permanent magnet and the grommet.
CN 200710158771 2007-12-07 2007-12-07 High speed magnetic suspension permanent magnet motor without bearing CN101207309A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101783560A (en) * 2010-02-22 2010-07-21 北京动力机械研究所 Permanent magnetic synchronous motor
CN102290896A (en) * 2011-08-22 2011-12-21 无锡杰尔压缩机有限公司 A high speed motor magnetic tile fixing structure
CN102306995A (en) * 2011-08-26 2012-01-04 北京航空航天大学 Permanent magnet biased bearingless switched reluctance motor
CN103409932A (en) * 2013-08-28 2013-11-27 宁波慈星股份有限公司 Bearing-free main motor of flat knitting machine
CN104682635A (en) * 2015-02-03 2015-06-03 北京科技大学 Manufacturing method for magnesium metal rotor magnetic suspension alternating-current motor
CN105356634A (en) * 2015-12-09 2016-02-24 南京磁谷科技有限公司 Composite sealing sheath for isolating rotor in magnetic suspension motor
CN106100182A (en) * 2016-08-04 2016-11-09 珠海格力节能环保制冷技术研究中心有限公司 Rotating shaft, assembling method of rotating shaft, and motor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101783560A (en) * 2010-02-22 2010-07-21 北京动力机械研究所 Permanent magnetic synchronous motor
CN102290896A (en) * 2011-08-22 2011-12-21 无锡杰尔压缩机有限公司 A high speed motor magnetic tile fixing structure
CN102306995A (en) * 2011-08-26 2012-01-04 北京航空航天大学 Permanent magnet biased bearingless switched reluctance motor
CN103409932A (en) * 2013-08-28 2013-11-27 宁波慈星股份有限公司 Bearing-free main motor of flat knitting machine
CN104682635A (en) * 2015-02-03 2015-06-03 北京科技大学 Manufacturing method for magnesium metal rotor magnetic suspension alternating-current motor
CN105356634A (en) * 2015-12-09 2016-02-24 南京磁谷科技有限公司 Composite sealing sheath for isolating rotor in magnetic suspension motor
CN105356634B (en) * 2015-12-09 2018-03-16 南京磁谷科技有限公司 Maglev motor rotor isolated composite sealing sheath
CN106100182A (en) * 2016-08-04 2016-11-09 珠海格力节能环保制冷技术研究中心有限公司 Rotating shaft, assembling method of rotating shaft, and motor

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