Power conversion method and system
US11431262B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jun 5, 2015 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Dec 28, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system (10) for converting power comprising a plurality of modules (14) connected in series and having each at least one DC power source. Storage devices (18) are provided with each module (14) to store power from the power source and voltage control circuitry (19) in each module (14) connects the storage device between a maximum module voltage, a minimum module voltage to create a stepwise approximation of a mains signal. A compensator unit (20) is provided in series with the modules (14) including a storage device charged by the power sources. While each of the modules (14) is supplying either its maximum or minimum voltage to the system a control unit ramps up or down the voltage between the input and output of the compensator unit (20) to follow the desired AC signal. When the control unit operates a module (14) to vary the supplied voltage from either zero to the maximum or minimum values, or vice versa, the control unit applies via compensator voltage control circuitry a corresponding but opposed change in the voltage supplied by the compensator unit (20).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.