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    • 5. 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。