Control device for an inverter, inverter for an asynchronous machine, vehicle and method for operating an inverter
US11539320B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2019 |
| Grant date | Dec 27, 2022 |
| Priority date | — |
| Expiry date | Sep 19, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control device for an inverter has a DC voltage input and a power unit with three half-bridges each formed by two power switching elements, the control device being arranged to driving the power switching elements in a normal operating mode for converting a DC voltage applied to the DC voltage input into a polyphase AC current provided at an AC current output. The control device is adapted to evaluate a signal state of a signal indicating a disconnection of a DC voltage source from the DC voltage input and to control the power switching elements in dependence on a result of the evaluation for alternately adopting a first switching pattern causing DC braking and a second switching pattern causing freewheeling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.