Power supply apparatus with selective rectifier harmonic input current suppression and methods of operation thereof
US6295216A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2000 |
| Grant date | Sep 25, 2001 |
| Priority date | — |
| Expiry date | Apr 6, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply apparatus includes an AC input port and a rectifier circuit, coupled to the AC input port, that produces a DC voltage at a rectifier circuit output from an AC input voltage at the AC input port. The apparatus further includes a selective harmonic current inducing circuit, coupled to the rectifier circuit output, that induces a harmonic component in a current delivered to a load from the rectifier circuit output. The selective harmonic current inducing circuit may control a phase and a magnitude of the induced harmonic current component in order to achieve selective suppression of a harmonic input current at the AC input port. The power supply apparatus may further include a filter circuit, coupled to the AC input port, that selectively suppresses a first harmonic current at the AC input port. The selective harmonic current inducing circuit may control the phase and magnitude of the induced harmonic current component such that a second harmonic current at the AC input port is suppressed. For example, for a three-phase passive rectifier circuit, the filter circuit may suppress a fifth harmonic input current, and the selective harmonic current inducing circuit may contr…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.