Method for controlling multilevel converter
US9455618B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 22, 2014 |
| Grant date | Sep 27, 2016 |
| Priority date | — |
| Expiry date | Nov 15, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0003
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides a method for controlling a multilevel converter, the method including, detecting modulation state values and current directions of sub-modules, and designating, by one sub-module, an average number of switching for each period of an output waveform, wherein the step of designating the average number of switching includes, grouping the sub-modules according to being in ON state or in OFF state, comparing the number of sub-modules in previous ON state and the number of sub-modules in OFF state to obtain a difference therebetween, and changing a state as much as the difference, comparing a sub-module of ON state in charged state and in discharged state with a sub-module of OFF state, and changing the compared states of sub-modules of ON state and OFF state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.