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1. 发明专利

JP2014176113A Induction machine 有权
标题翻译：感应机
公开(公告)号：JP2014176113A
公开(公告)日：2014-09-22
申请号：JP2013043724
申请日：2013-03-06
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KUNIHIRO NAOKI , NISHIHAMA KAZUO , IIZUKA MOTONOBU , SUGIMOTO KENICHI , SAWAHATA KIMINORI , KOMURA AKIYOSHI
IPC分类号： H02K17/16
CPC分类号： H02K17/165 , H02K2213/03
摘要： PROBLEM TO BE SOLVED: To provide an induction machine which improves efficiency while increasing a power factor by increasing a leakage magnetic flux of a higher harmonic wave while reducing a leakage magnetic flux of a main magnetic flux.SOLUTION: The induction machine comprises a squirrel-cage rotor including: a rotor core; a plurality of rotor slots disposed at intervals in a circumferential direction at an outer circumferential side of the rotor core and formed continuously in an axial direction; a plurality of rotor bars inserted into the plurality of rotor slots; and a plurality of rotor slits continued to the plurality of rotor slots and positioned closer to an outer circumference of the rotor core than the plurality of rotor slots. The rotor slit is formed from a cavity, a circumferential width of the rotor slit on an inner peripheral surface is larger than a circumferential width of the rotor slit on an outer circumferential surface and smaller than a circumferential width of the rotor bar on an outer circumferential surface, and the circumferential width of the rotor slit has a region which is widened from the outer circumferential surface to the inner circumferential surface.
摘要翻译：要解决的问题：提供一种感应电机，其通过增加高次谐波的漏磁通来提高效率，同时降低主磁通的泄漏磁通，提高效率。解决方案：感应电机包括松鼠 - 笼式转子包括：转子芯; 多个转子槽，其沿圆周方向间隔设置在转子铁心的外周侧，并沿轴向连续地形成; 插入到所述多个转子槽中的多个转子条; 并且多个转子狭缝连续到多个转子槽并且比多个转子槽更靠近转子芯的外圆周定位。转子狭缝由空腔形成，内周面上的转子狭缝的周向宽度大于外周面上的转子狭缝的周向宽度，并且小于外周的转子条的周向宽度表面，并且转子狭缝的周向宽度具有从外周面到内周面变宽的区域。

2. 发明专利

JP2017118719A 回転電機审中-公开
公开(公告)号：JP2017118719A
公开(公告)日：2017-06-29
申请号：JP2015252801
申请日：2015-12-25
申请人：株式会社日立製作所 , Hitachi Ltd
发明人： KOORI DAISUKE , IWANO RYUICHIRO , SAWAHATA KIMINORI , NISHIHAMA KAZUO , IIZUKA MOTONOBU , KOYAMA TAKAYUKI , SUGIMOTO KENICHI
IPC分类号： H02K1/20 , H02K1/18
CPC分类号： H02K9/10 , H02K1/12 , H02K1/20 , H02K7/14
摘要：【課題】本発明は長尺化した回転電機の軸方向中心付近の冷媒風量を増加させ、冷却効率を向上させた回転電機システムを提供することにある。【解決手段】回転子と固定子とを備えた回転電機であって、前記固定子はコイルと固定子鉄心とを備え、前記コイルは、周方向に配置され、前記固定子鉄心は、軸方向に複数の電磁鋼板が積層されて成る積層電磁鋼板が複数組のパケット鉄心に分割されると共に、該複数組のパケット鉄心の1つとそれに隣り合う他のパケット鉄心との間に、冷媒を固定子径方向に流す流路となるダクトが形成され、前記パケット鉄心と前記ダクトとが軸方向に交互に配設されて構成され、前記ダクトのうち軸方向両端部から中心側に位置するダクトにおいて、ダクトを挟んで対向する二つのパケット鉄心の、その径方向長さ大きくした部分を有することを特徴とする回転電機【選択図】図6

3. 发明专利

JP2002369468A Pole change induction motor 审中-公开
标题翻译：变更电动机
公开(公告)号：JP2002369468A
公开(公告)日：2002-12-20
申请号：JP2001177063
申请日：2001-06-12
申请人： Hitachi Eng Co Ltd , Hitachi Ltd , 日立エンジニアリング株式会社 , 株式会社日立製作所
发明人： SUGIMOTO KENICHI , HAMA TAKAHIRO , MATSUMOTO MASANORI , MORI TAKESHI , KIKUCHI SHIRO
IPC分类号： H02K17/14
摘要： PROBLEM TO BE SOLVED: To solve the problem of a pole change induction motor using a PAM method, where a main magnetomotive force (flux) component in a neighborhood of a gap where a polarity is changed being reduced and the start characteristics of the motor not being satisfactory. SOLUTION: There is provided a stator winding 1 having a plurality of coils U, V, and W formed by winding conductors. The coils U, V, and W are classified into a first coil block 3 and a second coil block 4, whose number of poles are different from that of the first coil block 3. First coils 6 and second coils 7, which have larger number of turns of the conductors than the first coils 6 are provided in the respective coil blocks. The polarities are switched between the first coil block 3 and the second coil block 4, to improve the start characteristics.
摘要翻译：要解决的问题为了解决使用PAM方法的极点感应电动机的问题，其中极性改变的间隙附近的主磁动势（磁通）分量减小，电动机的起动特性不令人满意解决方案：提供一种定子绕组1，其具有通过缠绕导体形成的多个线圈U，V和W。线圈U，V，W分为第一线圈块3和第二线圈块4，第一线圈块3和第二线圈块4的极数与第一线圈块3的极数不同。第一线圈6和第二线圈7具有较大的数量在各个线圈块中设置比第一线圈6多的导体的匝数。极性在第一线圈块3和第二线圈块4之间切换，以提高启动特性。

4. 发明专利

JPH07322544A ELECTRIC ROTATING MACHINE 失效
公开(公告)号：JPH07322544A
公开(公告)日：1995-12-08
申请号：JP10810594
申请日：1994-05-23
申请人： HITACHI LTD
发明人： SUGIMOTO KENICHI
IPC分类号： H02K17/16 , H02K3/51
摘要： PURPOSE:To prevent the deterioration of insulator by making an oblique notch at the upper end of the comb tooth part of a rotor clamp thereby reducing the leakage flux and eliminating local heating. CONSTITUTION:A plurality of laminate blocks of thin iron plate having predetermined thickness are stacked through a ventilation duct 2 into an annular stator core 1 having an end duct 3 and a core stopper and a stator winding is inserted into slots made in the inner side face. Similarly, a stator core 6 having an end duct 7 and a rotor clamp 10 is formed by stacking a plurality of laminate blocks of thin iron plate having predetermined thickness through a ventilation duct 3 and secondary conductor bars 8 are inserted into slots made in the outside of the rotor. The bars are connected, at the end parts through an end ring 9. This structure reduces flux leakage to the end part in the axial direction of the rotor even upon abrupt variation of load during steady operation thus preventing local heating and protecting an insulator against deterioration.

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