Synchronous motor and control method of synchronous motor
US8421395B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 8, 2009 |
| Grant date | Apr 16, 2013 |
| Priority date | — |
| Expiry date | May 2, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.