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    • 5. 发明授权
    • Rotor for a short circuited alternating current motor
    • 转子用于短路交流电动机
    • US5402026A
    • 1995-03-28
    • US122568
    • 1993-10-01
    • Lars GertmarBengt RydholmChandur SadaranganiJens P. Zinck
    • Lars GertmarBengt RydholmChandur SadaranganiJens P. Zinck
    • H02K1/32H02K17/16H02K17/18H02K1/26H02K1/28
    • H02K17/165H02K1/32H02K17/185
    • A rotor for short-circuited alternating current motors, having a pack of circular rotor blades fixedly mounted on a shaft, the plates have, uniformly around the peripheral edges thereof, a number of recesses which, when the plates are packed, form generally axially extending rotor slots, and each rotor slot includes a first recess or cavity whose peripheral edge forms a closed contour and which accommodates a conductor radially inwards of the mantle surface of the rotor, the peripheral edge of said first recess has a concavity which faces towards said peripheral edge, and a second recess which forms a radially extending slot which extends from a point close to the concavity and out towards said peripheral edge, a bridge is formed between the first recess and the second recess, and the second recess has a widened part which is located between the concavity of the first recess and the peripheral edge.
    • PCT No.PCT / SE92 / 00171 Sec。 371日期:1993年10月1日 102(e)日期1993年10月1日PCT 1991年3月20日PCT公布。 公开号WO92 / 17933 日期:1992年10月15日。一种用于短路交流电动机的转子,其具有固定地安装在轴上的一组圆形转子叶片,所述板在其周边周围均匀地具有多个凹槽, 被包装,形成大致轴向延伸的转子槽,并且每个转子槽包括第一凹部或空腔,其外围边缘形成封闭轮廓并且容纳导体的外壳表面径向向内的导体,所述第一凹部的周边边缘具有 面向所述周边边缘的凹面,以及形成径向延伸槽的第二凹槽,所述凹槽从靠近所述凹部的位置延伸出并朝向所述周边边缘延伸,在所述第一凹槽和所述第二凹槽之间形成桥, 第二凹部具有位于第一凹部的凹部和周缘之间的加宽部。
    • 8. 发明授权
    • Synchronous machine with power and voltage control
    • 同步电机具有电源和电压控制
    • US06828701B1
    • 2004-12-07
    • US09355728
    • 1999-10-04
    • Bertil BerggrenLars GertmarJan-Anders NygrenTore PeterssonMats Leijon
    • Bertil BerggrenLars GertmarJan-Anders NygrenTore PeterssonMats Leijon
    • H02H706
    • H02P9/305H02H7/06Y10S174/19Y10S174/29
    • A synchronous machine for power and/or voltage control comprises a stator with a stator winding and a rotor with a field winding. The stator winding comprises a high-voltage cable with solid insulation. A rotor has a thermally based rotor current limit intersecting with a thermally based stator current limit in a capability graph at a power factor considerably below the rated power factor or has the thermally based rotor current limit above the thermally based stator current limit. In the capability graph. Means are provided for limiting the currents in order to avoid thermal damage. In a method for power and/or voltage control of such a synchronous machine, the machine operates with the stator current exceeding the thermally based stator current limit for a certain time period less than the maxim an permissible time limit, whereafter the overload is reduced by reduction of either the active power or the field current or a combination of both.
    • 用于电力和/或电压控制的同步电机包括具有定子绕组的定子和具有励磁绕组的转子。 定子绕组包括具有固体绝缘的高压电缆。 转子具有与基于热定子电流限制相交的热基转子电流极限,功率曲线的功率因数明显低于额定功率因数,或具有高于热定子电流极限的基于热的转子电流限制。 在能力图中。 提供了用于限制电流以避免热损伤的装置。 在这种同步电机的功率和/或电压控制方法中,机器以超过热定子电流限制的定子电流工作一段时间,小于允许时间限制的最大值,之后过载被减少 降低有功功率或励磁电流或二者的组合。