Power control system using a nonlinear delta-sigma modulator with nonlinear power conversion process modeling
US7719246B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 31, 2007 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | Sep 13, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P80/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power control system includes a switching power converter and a power factor correction (PFC) and output voltage controller. The switching power converter utilizes a nonlinear energy transfer process to provide power to a load. The PFC and output voltage controller generates a control signal to control power factor correction and voltage regulation of the switching power converter. The PFC and output voltage controller includes a nonlinear delta-sigma modulator that models the nonlinear energy transfer process of the switching power converter. The nonlinear delta-sigma modulator generates an output signal used to determine the control signal. By using the nonlinear delta-sigma modulator in a control signal generation process, the PFC and output voltage controller generates a spectrally noise shaped control signal. In at least one embodiment, noise shaping of the control signal improves power factor correction and output voltage regulation relative to conventional systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.