Control circuit for DC network to maintain zero net change in energy level
US9209693B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2011 |
| Grant date | Dec 8, 2015 |
| Priority date | — |
| Expiry date | Nov 11, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/60
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is a control circuit comprising first and second DC terminals for connection to a DC network, the first and second DC terminals having a plurality of modules and at least one energy conversion element connected in series therebetween to define a current transmission path, the plurality of modules defining a chain-link converter, each module including at least one energy storage device, the or each energy storage device being selectively removable from the current transmission path to cause a current waveform to flow from the DC network through the current transmission path and the or each energy conversion element and thereby remove energy from the DC network, the or each energy storage device being selectively removable from the current transmission path to modulate the current waveform to maintain a zero net change in energy level of the chain-link converter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.