发明名称 |
OVERCURRENT LIMITING FOR THE CLOSED-LOOP CONTROL OF CONVERTER-FED THREE-PHASE MACHINES |
摘要 |
A method and a structure operate a three-phase machine, which is fed by a three-phase converter, using a stator flux regulator and either a slip frequency regulator or a torque regulator. A torque-forming fundamental-frequency current component of the stator current is limited by limiting a setpoint value that is supplied to the slip frequency regulator or to the torque regulator to a maximum slip frequency value maximum torque value. The flux-forming fundamental-frequency current component of the stator current is limited by limiting the speed at which a setpoint value supplied to the stator flux regulator changes to a maximum value. The maximum slip frequency value or maximum torque value is calculated on the basis of a prescribed maximum current value for a stator current fundamental-frequency magnitude of the stator current and on the basis of a filtered actual value of the flux-forming fundamental-frequency current component of the stator current. |
申请公布号 |
US2012081065(A1) |
申请公布日期 |
2012.04.05 |
申请号 |
US201113299832 |
申请日期 |
2011.11.18 |
申请人 |
KRAFKA PETER;RAMPE MICHAEL;BOMBARDIER TRANSPORTATION GMBH |
发明人 |
KRAFKA PETER;RAMPE MICHAEL |
分类号 |
H02P23/08 |
主分类号 |
H02P23/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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