Apparatus and method for measuring position deviation of rotor of permanent magnet synchronous motor
US8941339B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2013 |
| Grant date | Jan 27, 2015 |
| Priority date | — |
| Expiry date | Jul 12, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2203/11
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus for measuring a position deviation of a rotor of a permanent magnet synchronous motor includes a control unit, a power transformation unit, a rotor position estimator and a calculation unit. The control unit receives a d-axis DC voltage signal and a q-axis AC voltage signal and receives an initial value of the rotor position and a high-frequency signal to output a three-phase command signal. The power transformation unit receives the three-phase command signal and outputs a three-phase control signal for controlling the motor. The rotor position estimator receives a three-phase current feedback signal corresponding to an operation of the motor and generates an estimation value of the rotor position. The calculation unit performs calculation to the initial value and the estimation value to generate a deviation value of the rotor position. Moreover, a method for measuring the position deviation is also disclosed herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.