System and method for optimally driving a DC motor
US5334917A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 28, 1992 |
| Grant date | Aug 2, 1994 |
| Priority date | — |
| Expiry date | Aug 28, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/15
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Method and a device in a drive system for a DC-motor including an inverter and a multiple phase synchronous motor with a permanent magnet rotor, and provided with a rotor position detection means in order to generate a rotation dependent logical position signal or signals. An optimization is carried out, which is based on the rotation dependent logical signals (POS1, POS2, POS3) from said rotor position detection means whereby the commutation points each are displaced such, that at said optimization minimum input current is detected to eliminate poor operation caused by unsymmetries in the motor iron or windings as well as unsymmetries of the rotor magnet and thereby optimize motor performance with respect to e.g. efficiency at present velocity and load, maximum acceleration and motor vibrations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.