发明名称 |
VERFAHREN UND VORRICHTUNG ZUR STEUERUNG EINES SYNCHRONMOTORS |
摘要 |
A desired q-axis current is determined based on a desired torque, and a desired d-axis current is determined based on the rotating speed of a synchronous motor when the terminal voltage of the synchronous motor coincides with a predetermined maximum permissible voltage to weaken a magnetic field created by the synchronous motor equivalently and to prevent the drop of the output torque of the synchronous motor. The desired d-axis current is determined based on the desired torque and the rotating speed. Therefore, the desired d-axis current can be reduced when a high torque is not necessary and undesired increase of the desired d-axis current can be prevented. Thus the synchronous motor operates efficiently, heat generation of the synchronous motor is prevented and power factor is improved. |
申请公布号 |
AT415733(T) |
申请公布日期 |
2008.12.15 |
申请号 |
AT20050257269T |
申请日期 |
2005.11.25 |
申请人 |
KAWASAKI JUKOGYO KABUSHIKI KAISHA |
发明人 |
HIDEKI, TANAKA;TSUYOSHI, MAEHARA;SHINJI, KAJIHARA;TETSUYA, KUBOTA |
分类号 |
H02P21/00 |
主分类号 |
H02P21/00 |
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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