Choke for interleaved switching
US10447114B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 3, 2015 |
| Grant date | Oct 15, 2019 |
| Priority date | — |
| Expiry date | Sep 26, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/493
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
When performing interleaved switching, a power generation system may include chokes for filtering out a high-frequency ripple. However, because the chokes are interconnected, a common mode current can flow between the different parallel converters. Instead of connecting all the outputs of a parallel converter to the same choke, the same phase of each of the parallel converters is sent to one of the chokes. For example, the first phase signals are sent to a first choke, the second phase signals are sent to a second choke, and so forth. By doing so, air gaps in the chokes can be manipulated in order to provide a different inductance for the common mode current than a grid current. For example, the air gaps may be arranged such that the inductance corresponding to the common mode current is greater than the inductance corresponding to the grid current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.