Inverter for an electrical machine
US11316439B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2018 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | May 3, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K7/209
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An inverter has at least three phases for supplying current to an electrical machine. The inverter also has a control unit and at least one power output stage connected to the control unit on an input side. The control unit is configured to generate pulse-width-modulated control signals for activating the power output stage. The inverter further has a heat sink and, for each phase, an intermediate circuit capacitor and a semiconductor switch half bridge. The heat sink has a flat thermal contact surface. The thermal contact surface is connected in a thermally conductive manner to the control unit and to the semiconductor switch half bridges. The heat sink has a recess for each of the intermediate circuit capacitors, and the intermediate circuit capacitors are each arranged in one of the recesses in the heat sink.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.