Sub-module distributed control method, device and system
US9876420B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 28, 2015 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | Oct 28, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/325
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A submodule distributed control method, device and system are provided. Submodules of each bridge arm are grouped. Each group corresponds to one valve based controller. An upper-level control device calculates a weight of each group according to a bridge arm current, an average voltage of normal submodules in each group, and the number of the normal submodules in each group; calculates, according to the number of submodules to be input in a corresponding bridge arm, the number of submodules being input in each group and delivers the number to the valve based controller. The valve based controller operates according to a voltage balancing policy and a gating method that are provided in the prior art.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.