发明名称 |
ELECTRIC MOTOR AND METHOD FOR CONTROLLING THE SAME |
摘要 |
An electric motor (100) having a motor control system (400) including: -a current measuring means (402) for directly or indirectly measuring the electric current in the rotor windings (7) providing a rotor current value/s, -an ambient temperature measuring/estimation means (404) for measuring or estimating the ambient air temperature providing an air temperature value/s, -a rotor temperature estimation means (406, 407, 408, 409, 410, 411) for estimating a rotor temperature at least based on the rotor current value/s and the air temperature value/s, and -a current limiting means (405) for preventing overheating/burning of the rotor assembly (3) by limiting the electric current to the rotor windings (7) when the estimated rotor temperature exceeds a predetermined overheating threshold (412). |
申请公布号 |
WO2011040845(A1) |
申请公布日期 |
2011.04.07 |
申请号 |
WO2009SE51078 |
申请日期 |
2009.09.29 |
申请人 |
HUSQVARNA AB;PETTERSSON, ULF;ERESTAM, ANDERS |
发明人 |
PETTERSSON, ULF;ERESTAM, ANDERS |
分类号 |
H02P9/10;H02P23/14;H02P29/00 |
主分类号 |
H02P9/10 |
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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