Auxiliary converter circuit and its method of operation
US10404160B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 8, 2019 |
| Grant date | Sep 3, 2019 |
| Priority date | — |
| Expiry date | Jan 8, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An auxiliary converter circuit for regulating an input current to a main switching converter circuit. The auxiliary converter circuit has a voltage detector for determining a change in a voltage across the auxiliary converter circuit, and a current sensor for sensing an input current to the main switching converter circuit. The auxiliary converter circuit also has a current compensation circuit that includes a comparator circuit arranged to compare the sensed input current with a reference current; and a controlled current circuit. The controlled current circuit is arranged to selectively provide a positive compensation current and a negative compensation current to the input current, based on the determined voltage change and the comparison, for suppressing harmonic distortion and electromagnetic interference in the input current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.