Method and apparatus for determining a rotor position and rotation speed of an electrical machine
US9667127B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 2, 2014 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Jan 2, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K23/66
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a brush-commutated electrical machine. The machine includes a rotor with rotor coils which are arranged on rotor poles. The machine also includes a commutator with commutator laminations which are electrically connected to the rotor coils, and having two brushes which are arranged offset in relation to one another, with the result that the brushes alternately commutate when the rotor moves. The machine also includes a stator having stator poles which are arranged in the circumferential direction and at least some of which are provided with stator magnets, wherein the stator poles are designed and/or arranged such that an alternating stator magnetic field which is generated by said stator poles in the circumferential direction is formed differently depending on the pole direction of the respective stator pole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.