Maximum power point tracking method and device
US6844739B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 8, 2002 |
| Grant date | Jan 18, 2005 |
| Priority date | — |
| Expiry date | Dec 29, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/56
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The output current value of a direct-current power source obtained by low-frequency, minute modulation of the input voltage of a switching converter is detected in a circuit having an amplification factor switching function that switches the amplification factor between definite magnitudes synchronizing with the modulation, and by using a signal obtained by demodulating in a discriminator circuit the output of this circuit synchronizing with the modulation to control the switching converter, the power point of the switching converter can be tracked to the maximum power point by following the change in state of the direct current power source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.