Method and apparatus for controlling an electric machine in a six-step mode
US9419549B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2014 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Jan 17, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P27/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An inverter electrically operatively connects to a multi-phase electric machine, and a method for controlling the inverter includes executing a six-step mode to control the inverter and monitoring an electric voltage angle of the electric machine at a preset sampling frequency. When the electric voltage angle approaches a step transition associated with control of one of a plurality of switches of the inverter in the six-step mode, an intermediate duty command for the one of the switches is determined and a carrier signal is aligned based upon a present state of the one of the switches. The one of the switches is controlled employing the intermediate duty command and the aligned carrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.