发明名称 |
Synchronous motor and control method of synchronous motor |
摘要 |
A synchronous motor including therein a three-phase inverter and position sensors, having a unit for calculating a digital input current value from the analog output of an input current detection circuit that detects the input current flowing into the DC input terminal of the three-phase inverter, and a digital feedback speed control unit for adjusting the amplitudes and frequency of the AC voltages outputted from the three-phase inverter in such a manner that the motor speed calculated by a motor speed calculation unit 41 on the basis of the outputs of the position sensors approaches a speed command value received by a communication reception unit from outside the synchronous motor. The synchronous motor further includes therein a communication transmission unit for transmitting the input current value and the motor speed to outside the synchronous motor. |
申请公布号 |
US8421395(B2) |
申请公布日期 |
2013.04.16 |
申请号 |
US20090420154 |
申请日期 |
2009.04.08 |
申请人 |
MAEDA DAISUKE;SAKURAI KENJI;HASEGAWA HIROYUKI;SHIRAHAMA HIDEFUMI;MISHIMA MITSUHIRO;HITACHI, LTD.;HITACHI INFORMATION & CONTROL SOLUTIONS, LTD. |
发明人 |
MAEDA DAISUKE;SAKURAI KENJI;HASEGAWA HIROYUKI;SHIRAHAMA HIDEFUMI;MISHIMA MITSUHIRO |
分类号 |
H02P3/18 |
主分类号 |
H02P3/18 |
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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