Synchronous motor control device, compressor drive system, and air conditioner
US10476423B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2015 |
| Grant date | Nov 12, 2019 |
| Priority date | — |
| Expiry date | Dec 2, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A synchronous motor control device includes a voltage detector, a current detector, an inverter main circuit, and an inverter control unit. The inverter control unit includes: a phase current reproduction unit that reproduces a direct current into phase currents flowing to a permanent magnet synchronous motor; a current coordinate transformation unit that transforms the reproduced phase current into current on a control coordinate axis of a rotating coordinate system; a current control unit that calculates a voltage command value of the permanent magnet synchronous motor in such a manner that the current on the control coordinate axis equals a specific value; and a limiter unit that limits the value of the voltage command value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.