Drive controller and drive control method for electric motor
US10243503B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2015 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | Jan 21, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/032
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to drive controller and control method for an electric motor equipped with coil sets corresponding to plural phases. The drive controller and control method for an electric motor of the present invention control, in case of abnormal energization that a potential of the coil reaches a power supply potential or a ground potential, at least one of a high-potential side switching element and a low-potential side switching element in a failed energization system involving the abnormal energization into ON state so as to reduce a phase-to-phase impedance and also, detect a braking torque generated in the energization system involving the abnormal energization to control an output of a normal energization system not suffering from the abnormal energization based on the detected braking torque.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.