Digital control of PWM converters with nonlinear gain scheduling
US8427126B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2009 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Mar 31, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/157
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system and method for controlling a digital pulse-width modulated power converter achieves a fast large-signal transient response while maintaining a slow response near the steady-state operating point in order to assure stability and to reduce the system's susceptibility to noise. Digital output error samples are processed through a gain scheduling block that applies a non-linear gain function to produce a weak loop response when the system is near its steady-state equilibrium point and a strong loop response when large transients are encountered. The resulting system maintains a fast transient response to large error signals while reducing noise and loop jittering and assuring loop stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.