Control apparatus and method of senseless MPPT control for photovoltaic power generation system
US7994768B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 3, 2008 |
| Grant date | Aug 9, 2011 |
| Priority date | — |
| Expiry date | Apr 21, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/56
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The present invention relates to a senseless MPPT control apparatus of a photovoltaic power generation system and a method thereof. The control apparatus includes a current transformer, an A/D converter, a new and old current detector, a new duty ratio detector, an old duty ratio detector, a new and old duty ratio comparator, first and second new and old current comparators, a duty ratio adder, a duty ratio subtractor and a PWM signal generator. A maximum output point of a solar battery cell is tracked by using only one feedback current flowing into a load. Further, feedback factors can be reduced to one. It is possible to simplify the construction of a control circuit and minimize tracking control failure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.