Method for controlling a synchronous machine with permanent magnets and corresponding device
US10574159B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2016 |
| Grant date | Feb 25, 2020 |
| Priority date | — |
| Expiry date | Nov 22, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P21/09
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A permanent magnet synchronous machine includes a permanent magnet rotor and a three-phase stator, the machine being associated with a control inverter for controlling the stator of the machine. A method of controlling the machine includes taking three simultaneous measurements by three respective Hall effect sensors arranged to have a central sensor and two lateral sensors, the two lateral sensors being placed at 120°/p mechanical relative to the central sensor about the rotation axis of the rotor, where p is the number of pairs of poles of the machine; determining the position of the rotor based on the three measurements; controlling the control inverter as a function of the determined position of the rotor; and prior to controlling the inverter, applying a time delay to the three measurement signals so that the control of the control inverter takes account of a variable desired lag angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.