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1. 发明专利

JP2013179726A Control device of permanent magnet motor, permanent magnet motor, and compressor 有权
标题翻译：永磁电机，永磁电机和压缩机的控制装置
公开(公告)号：JP2013179726A
公开(公告)日：2013-09-09
申请号：JP2012040864
申请日：2012-02-28
申请人： Hitachi Appliances Inc , 日立アプライアンス株式会社
发明人： TAKAHASHI AKIFUMI , MARUYAMA ERI , HATSUSE WATARU , NOTOHARA YASUO , WAKUI SHINICHI
IPC分类号： H02P6/18
摘要： PROBLEM TO BE SOLVED: To provide a control device of a permanent magnet motor whereby demagnetization in a low temperature state can be avoided, and speedy start is possible.SOLUTION: This control device of the permanent magnet motor includes a stator, a coil provided in the stator, a permanent magnet, and a rotor having the permanent magnet. During start of the motor, when the temperature of the permanent magnet is not more than a prescribed value, a current having a first frequency is applied to the coil with the motor kept in a stopped state, when the temperature of the permanent magnet is still not more than the prescribed value after that, a current having a second frequency lower than the first frequency is applied to the coil with the motor kept in a stopped state, and when the temperature of the permanent magnet is not less than the prescribed temperature, the motor is started.
摘要翻译：要解决的问题：提供永磁电动机的控制装置，其中可以避免在低温状态下的退磁，并且可以快速启动。解决方案：永磁电动机的该控制装置包括定子，设置在定子，永磁体和具有永磁体的转子。在电动机启动期间，当永久磁铁的温度不超过规定值时，当电动机保持在停止状态时，具有第一频率的电流被施加到线圈，当永磁体的温度仍然不超过规定值时，具有低于第一频率的第二频率的电流被施加到电动机保持在停止状态的线圈，并且当永磁体的温度不低于规定温度时，马达启动。

2. 发明专利

JP2014217101A 永久磁石電動機有权
标题翻译：永磁电机
公开(公告)号：JP2014217101A
公开(公告)日：2014-11-17
申请号：JP2013090101
申请日：2013-04-23
申请人：株式会社日立産機システム , Hitachi Industrial Equipment Systems Co Ltd , 日立アプライアンス株式会社 , Hitachi Appliances Inc
发明人： ASAUMI YUSUKE , ISHIKAWA AKIHIRO , TAKAHASHI AKIFUMI
IPC分类号： H02K1/27
CPC分类号： H02K1/276 , H02K1/16 , H02K1/2753
摘要：【課題】永久磁石の減磁耐力を向上する永久磁石電動機の提供。【解決手段】本発明による永久磁石電動機は、周方向に沿って複数の磁石挿入孔4が形成された回転子鉄心2、および、複数の磁石挿入孔4に挿入された複数の永久磁石3を有する回転子1と、周方向に沿って複数のスロットが形成された固定子鉄心、および、複数のスロットに挿入された巻線を有する固定子とを備え、磁石挿入孔4には、永久磁石3の周方向側方の各々に空隙6が形成されるように、永久磁石3の周方向両端を位置決めする複数の突起5が軸方向の少なくとも一部に形成され、回転子鉄心2の永久磁石3の径方向外側に位置する領域に複数のスリット8が周方向に並設され、スリット8と磁石挿入孔4との最短距離は、スリット8と回転子鉄心2の外周面との最短距離よりも大きく設定されることを特徴とする。【選択図】図3
摘要翻译：要解决的问题：提供一种改善永磁体的退磁阻力的永磁电动机。解决方案：根据本发明的永磁电动机包括：转子1，其包括转子芯2，转子芯2中具有多个磁体插入孔4沿圆周方向形成，并且包括插入到磁体插入孔4中的多个永磁体3; 以及定子，其包括沿着圆周方向形成有多个狭槽的定子芯，并且包括插入到所述多个槽中的线圈绕组。在磁体插入孔4的轴向部分的至少一部分中，形成有多个凸起5，用于定位永磁体的两个周向端部，以便在每个圆周方向侧面上形成间隙6 永磁体3.在转子铁芯2的永磁体3的径向外侧的区域中，沿周向并排配置有多个狭缝8.狭缝8和磁体插入孔4被设定为比狭缝8和转子铁芯2的外周面之间的最短间隔长。

3. 发明专利

JP2014181592A Compressor 审中-公开
标题翻译：压缩机
公开(公告)号：JP2014181592A
公开(公告)日：2014-09-29
申请号：JP2013055873
申请日：2013-03-19
申请人： Hitachi Appliances Inc , 日立アプライアンス株式会社
发明人： OTAWARA MASARU , TAKAHASHI AKIFUMI , TSUCHIYA TAKESHI , ISHIKAWA AKIHIRO
IPC分类号： F04B39/00 , F04B39/02 , F04C29/00 , F04C29/02 , H02K1/20
摘要： PROBLEM TO BE SOLVED: To further maintain reliability by securing an insulation distance, and to suppress deterioration of performance caused by size reduction even if a compressor is reduced in size.SOLUTION: In a compressor, a stator of a drive part is fixed to a rotating shaft and arranged in the surroundings of a rotor via a clearance. The stator is composed of a plurality of slots which are arranged in the circumferential direction at prescribed intervals, teeth between the slots, and a core back at an external peripheral side of the teeth. An oil return passage for returning lubrication oil to an oil sump is formed at the external peripheral side; a part of the external peripheral side at the core back side of the slots is formed so as to be substantially orthogonal to a liner line which passes through a tooth circumferential center formed in the vicinity of the oil return passage and a stator center; and a prescribed clearance is formed between a part of an external periphery at the core back side of the slot which is formed so as to be substantially orthogonal and an inner-most peripheral side of the oil return passage.
摘要翻译：要解决的问题：为了通过确保绝缘距离来进一步保持可靠性，并且即使压缩机的尺寸减小，也能够抑制由尺寸减小引起的性能的劣化。解决方案：在压缩机中，将驱动部件的定子固定到旋转轴并经由间隙布置在转子的周围。定子由沿规定间隔的圆周方向排列的多个槽，槽之间的齿和齿的外周侧的芯背部组成。在外周侧形成有用于将润滑油返回到油底壳的回油通路; 在槽的芯部后侧的外周侧的一部分形成为与穿过形成在返回通路附近的齿圆周中心和定子中心的衬里线大致正交; 并且在形成为大致正交的槽的芯部后侧的外周的一部分与返回通路的最内周侧之间形成规定的间隙。

4. 发明专利

JP2014131373A Permanent magnet synchronous machine 审中-公开
标题翻译：永磁同步电机
公开(公告)号：JP2014131373A
公开(公告)日：2014-07-10
申请号：JP2012286611
申请日：2012-12-28
申请人： Hitachi Appliances Inc , 日立アプライアンス株式会社
发明人： TAKAHASHI AKIFUMI , MARUYAMA ERI
IPC分类号： H02K1/27
摘要： PROBLEM TO BE SOLVED: To make it possible to improve torque and efficiency in a permanent magnet synchronous machine to which a ferrite magnet is applied and a drive system using the machine.SOLUTION: A permanent magnet synchronous machine is a permanent magnet type motor comprising: a rotor having ferrite magnets arranged so as to configure a plurality of poles inside; and a stator arranged so as to have a predetermined gap between the stator and the rotator. The permanent magnet synchronous machine is configured so that a gap facing surface of each pole of the rotator has a shape having a salient to the side of the gap, a circumferential width of the salient is θp, and a part of the gap between the stator and the rotator in the θp is smaller than a part of the gap outside the θp; and is configured so that the electrical angle θp has relation of 80°
摘要翻译：要解决的问题：使得可以提高施加铁氧体磁体的永磁同步电机的扭矩和效率以及使用该机器的驱动系统。解决方案：永磁同步电机是永磁式电动机，包括：具有铁氧体磁体的转子，其布置成在内部配置多个极; 以及定子，其布置成在定子和旋转体之间具有预定的间隙。永久磁铁同步机被构造为使得转子的每个极的面向表面的形状具有向间隙侧面突出的形状，突出部的周向宽度为＆amp; p;以及间隙的一部分定子和旋转器在＆thetas中; p小于外面的间隙的一部分; p; 并且被配置为使得电角度＆p; p具有80°

5. 发明专利

JP2014087142A Permanent magnet synchronous machine, drive system using the same, and compressor 审中-公开
标题翻译：永磁同步机，使用它的驱动系统和压缩机
公开(公告)号：JP2014087142A
公开(公告)日：2014-05-12
申请号：JP2012233384
申请日：2012-10-23
申请人： Hitachi Appliances Inc , 日立アプライアンス株式会社
发明人： TAKAHASHI AKIFUMI , MARUYAMA ERI
IPC分类号： H02K1/27 , H02K21/16
CPC分类号： H02K1/27 , H02K1/2766 , H02K21/16 , H02K2213/03
摘要： PROBLEM TO BE SOLVED: To enable improvement in torque and improvement in efficiency by enabling effective utilization of reluctance torque in a permanent magnet synchronous machine to which a permanent magnet whose residual magnetic flux density is 0.6 T or less is applied and a drive system using the same.SOLUTION: A permanent magnet synchronous machine includes: a rotor having a permanent magnet whose residual magnetic flux density is 0.6 T or less which is arranged so as to constitute a plurality of poles therein; and a stator disposed having a predetermined gap with respect to the rotator. Relationship between a direct-axis inductance Ld(H) and a quadrature-axis inductance Lq(H) when an interlinkage magnetic flux Ψp (WB) of one phase portion for a stator coil and a current effective value Irms (Arms) are supplied to the coil in the permanent magnetic is satisfied.
摘要翻译：要解决的问题为了能够在施加剩余磁通密度为0.6T以下的永磁体的永磁同步电机中有效利用磁阻转矩，能够提高转矩和提高效率，并且使用永磁同步电机包括：转子，其具有剩余磁通密度为0.6T或更小的永磁体，其被布置成在其中构成多个磁极; 以及相对于所述旋转体具有预定间隙的定子。当定子线圈的一相部分的互连磁通Ψp（WB）和电流有效值Irms（Arms）被提供给直流电感Ld（H）和正交轴电感Lq（H）时的关系满足永久磁铁中的线圈。

6. 发明专利

JP2008245439A Electric motor and compressor using same 审中-公开
标题翻译：电动马达和压缩机使用相同
公开(公告)号：JP2008245439A
公开(公告)日：2008-10-09
申请号：JP2007083248
申请日：2007-03-28
申请人： Hitachi Appliances Inc , 日立アプライアンス株式会社
发明人： TAKAHASHI AKIFUMI , KIKUCHI SATOSHI , MIKAMI HIROYUKI , NISHIHAMA KAZUO , YOSHIKAWA TOMIO , KO HAKUEI
IPC分类号： H02K21/46 , F04B39/00 , H02K1/22
CPC分类号： H02K21/46 , H02K1/276
摘要： PROBLEM TO BE SOLVED: To provide a self-starting type permanent magnet synchronous electric motor having sufficient accelerating performance at the drop of power voltage or at the increase of load torque, and a compressor using the same.
SOLUTION: In the self-starting type permanent magnet synchronous electric motor including a stator with a stator winding, a basket-shaped winding and a permanent magnet provided to a rotor core, a torque component generated by the basket-shaped winding reaches its maximum at one within a slip value range of 0 to 1.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种在起动电压下降或负载转矩增加时具有足够的加速性能的自启动型永磁同步电动机以及使用该自励式永磁同步电动机的压缩机。解决方案：在包括具有定子绕组的定子，筐形绕组和设置在转子芯上的永磁体的自起动型永磁同步电动机中，由筐形绕组产生的扭矩分量达到其最大值在0到1之间的滑动值范围内。版权所有（C）2009，JPO＆INPIT

7. 发明专利

JP2014166016A Permanent magnet synchronous machine and compressor using the same 有权
标题翻译：永磁同步电机和使用它的压缩机
公开(公告)号：JP2014166016A
公开(公告)日：2014-09-08
申请号：JP2013034280
申请日：2013-02-25
申请人： Hitachi Appliances Inc , 日立アプライアンス株式会社
发明人： TAKAHASHI AKIFUMI , MARUYAMA ERI , ASAUMI YUSUKE
IPC分类号： H02K1/27 , F04B39/00 , H02K7/14
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet synchronous machine capable of improving torque and efficiency even when utilization of a reluctance torque is difficult.SOLUTION: The permanent magnet synchronous machine, in which a plurality of magnetic poles 30 each having such a shape as to protrude inwards in the radial direction in a rotator 1 and interlinkage flux Ψp(WB) corresponding to an amount for one phase of a stator coil by a permanent magnet 3 forming the magnetic pole 30 and direct-axis and lateral axis inductance Ld(H), Lq(H) when a current effective value Irms (Arms) is passed through a stator coil satisfies the following formula (1), includes slits 7a each being formed from nonmagnetic material at the outer-peripheral portion of a permanent magnet 3 in the radial direction.
摘要翻译：要解决的问题：提供即使在使用磁阻转矩时也能够提高扭矩和效率的永磁同步电机。解决方案：永磁同步电机，其中多个磁极30的形状如在旋转体1中沿径向向内突出，并且通过形成磁极30的永磁体3和直轴和横轴电感Ld（H）对应于定子线圈的一相量的相互连通通量Ψp（WB）），当电流有效值Irms（Arms）通过定子线圈时的Lq（H）满足下式（1），包括在永磁体3的外周部分由非磁性材料形成的狭缝7a，径向。

8. 发明专利

JP2013138531A Permanent magnet motor and compressor 有权
标题翻译：永磁电机和压缩机
公开(公告)号：JP2013138531A
公开(公告)日：2013-07-11
申请号：JP2011287255
申请日：2011-12-28
申请人： Hitachi Appliances Inc , 日立アプライアンス株式会社
发明人： TAKAHASHI AKIFUMI , WAKUI SHINICHI , MARUYAMA ERI
IPC分类号： H02K21/14 , H02K1/14
CPC分类号： H02K29/12 , F04B35/04 , F04C18/0207 , F04C29/0085 , H02K1/146 , H02K1/276
摘要： PROBLEM TO BE SOLVED: To provide: a permanent magnet motor that is capable of improving motor efficiency by suppressing a current increase by outputting a torque in accordance with pulsation of a load and of improving system reliability and redundancy by suppressing detection of an overcurrent; and a drive system that utilizes this permanent magnet motor.SOLUTION: The permanent magnet motor comprises: a stator with multiple teeth; and a rotor which is provided with a predetermined gap from the stator. In the permanent magnet motor, a pass-through flux in the gap direction is allowed to pass through more easily at least at one of the teeth than at the other teeth, and a pass-through flux in the gap direction is allowed to pass through more easily at least at one of poles of the rotor than at the other poles.
摘要翻译：要解决的问题：提供一种永磁电动机，其能够通过根据负载的脉动输出转矩来抑制电流增加，并通过抑制过电流的检测来提高系统的可靠性和冗余度来提高电动机的效率; 以及利用该永磁电动机的驱动系统。解决方案：永磁电动机包括：具有多个齿的定子; 以及设置有与定子的预定间隙的转子。在永久磁铁马达中，允许间隙方向上的通过磁通至少在一个齿上比在另一个齿处更容易通过，并且允许沿间隙方向的直通磁通通过至少在转子的极点处比在其它极点更容易。

9. 发明专利

JP2009153307A Self-start permanent magnet synchronous motor, and compressor using the same 有权
标题翻译：自启动永磁同步电机及使用其的压缩机
公开(公告)号：JP2009153307A
公开(公告)日：2009-07-09
申请号：JP2007329483
申请日：2007-12-21
申请人： Hitachi Appliances Inc , 日立アプライアンス株式会社
发明人： KIKUCHI SATOSHI , MIKAMI HIROYUKI , TAKAHASHI AKIFUMI , YOSHIKAWA TOMIO , TANAKA KEIJI , MIYAKE SHIGEJI , KO HAKUEI , OTAWARA MASARU , TOJO KENJI , KUMAKURA HIDEYUKI
IPC分类号： H02K21/46 , F04C29/00 , H02K1/27 , H02K17/16 , H02K21/14
CPC分类号： H02K21/46
摘要： PROBLEM TO BE SOLVED: To provide a self-start permanent magnet synchronous motor which generates a stable starting torque and adjusts the starting torque arbitrarily, irrespective of a generating position of magnetic flux of a stator which changes according to the timing and voltage phase of power supply, and to provide a compressor and an air conditioner using the motor.
SOLUTION: At least one pair or more of bars which constitute a squirrel cage coil and form an opposite angle at a magnetic pole pitch are made nonconductive. The self-start permanent magnet synchronous motor with a rotor structure can reduce and adjust a difference of the starting torque produced by a voltage phase and a rotor position, and improve motor efficiency.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种自启动永磁同步电动机，其产生稳定的起动转矩并随意调节起动转矩，而不管根据定时和电压而变化的定子的磁通量的产生位置如何并且提供使用该电动机的压缩机和空调。解决方案：构成鼠笼式线圈并以磁极间距形成相反角度的至少一对或更多的杆被制成不导电的。具有转子结构的自启动永磁同步电动机可以减小和调整由电压相位和转子位置产生的起动转矩的差异，并提高电机效率。版权所有（C）2009，JPO＆INPIT

10. 发明专利

JP2008131768A Rotary electric machine, self-starting permanent-magnet field synchronous electric motor, induction motor, and compressor 有权
标题翻译：旋转电机，自启动永磁同步电动机，感应电动机和压缩机
公开(公告)号：JP2008131768A
公开(公告)日：2008-06-05
申请号：JP2006314969
申请日：2006-11-22
申请人： Hitachi Appliances Inc , 日立アプライアンス株式会社
发明人： KIKUCHI SATOSHI , TAKAHASHI AKIFUMI , YOSHIKAWA TOMIO , KO HAKUEI
IPC分类号： H02K3/28 , H02K17/16 , H02K21/46
摘要： PROBLEM TO BE SOLVED: To provide a motor, a self-starting permanent-magnet field synchronous motor, an induction motor, and a compressor wherein the efficiency is enhanced and abnormal torque at start can be easily reduced.
SOLUTION: A rotary electric machine includes a stator and a rotor. The stator is formed by winding an armature winding in multiple slots formed in a stator core so that teeth are encircled therewith. The rotor includes: a rotor core; and a squirrel-cage rotor constructed of conductive bars in multiple slots formed in proximity to the peripheral portion of the rotor core; and conductive short-circuiting members that short-circuit the bars at end faces in the axial direction. The rotor is rotatably supported inside the stator with a gap. The squirrel-cage rotor is constructed of multiple pairs of bars short-circuited so that the short-circuiting pitch α of the short-circuiting members meets the relation expressed as 90°≤α≤180° in electrical angle.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供电动机，自启动永磁同步电动机，感应电动机和压缩机，其中效率提高，起动时的异常转矩可以容易地降低。解决方案：旋转电机包括定子和转子。定子通过将电枢绕组卷绕在形成在定子芯中的多个槽中而形成，使得齿被包围。转子包括：转子芯; 以及由在转子芯的周边部分附近形成的多个槽中的导电棒构成的鼠笼式转子; 以及导电短路构件，其在轴向方向上在端面短路棒。转子可旋转地支撑在定子内部，并具有间隙。鼠笼式转子由多对棒短路构成，短路部件的短路节距α在电角度上满足90°≤α≤180°的关系。版权所有（C）2008，JPO＆INPIT

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