Multi-mode power point tracking
US8754627B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 20, 2011 |
| Grant date | Jun 17, 2014 |
| Priority date | — |
| Expiry date | Feb 25, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/67
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method for tracking a power point for a power source includes calculating voltage and current errors for the power source, selecting either the voltage error or the current error, and controlling the power converter with a first control loop in response to the selected error. The voltage and current errors may be calculated in response to voltage and current targets, respectively, which may be calculated by a second control loop that implements an MPPT algorithm. The second control loop may calculate the voltage and current targets in response to which error the first control loop selects. A method for tracking a power point for a power source having multiple local power maxima includes measuring the individual voltage across one or more series-connected power elements in the power source, and controlling the power in response to the overall voltage and current as well as the individual voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.