Photovoltaic power generation controlling means for utility tunnel

The utility model discloses a photovoltaic power generation controlling means for utility tunnel, including at least one photovoltaic board, the photovoltaic board passes through maximum power pursuit control circuit and links to each other with the generating line, and it has a plurality of batteries to connect in parallel on the generating line, and the generating line still links to each other through dc -to -ac converter and load, the photovoltaic board still links to each other with voltage detection circuit and current detection circuit respectively, and voltage detection circuit and current detection circuit link to each other with the controller respectively, and maximum power tracks control circuit and includes consecutive protection circuit, filter circuit, boost converter, and the protection circuit links to each other with the photovoltaic board, and the boost converter links to each other with the generating line, efficient maximum power tracks control method. It is fast that this method has the search, advantage that the stable state precision is high. When keeping away from maximum power point, adopt great step -length automatically for search speed when being close to maximum power point, adopts less step -length, reduces the power loss.