Output control apparatus of solar cell

摘要

An output control apparatus of a solar cell is provided with: a first controlling device for sequentially increasing a load for extracting the output from a load in an increase area in which the output increases with respect to an increase in the load; a detecting device for detecting a decrease in the output with respect to the increase in the load in a process of sequentially increasing the load; and a second controlling device for rapidly reducing the load to an initial load which belongs to the increase area in comparison with the process of sequentially increasing the load in cases where a change in the output is detected, the first controlling device sequentially increasing the load again after the load is reduced to the initial load.

主权项

1. An output control apparatus for use with a solar cell for controlling an output of the solar cell, the solar cell being configured to operate at an output point in an increase area or a transient load area in accordance with a load where: (i) the increase area is an area in which an output of the solar cell increases as the load increases;
and (ii) the transient load area is an area in which (ii-1) an output voltage of the solar cell rapidly decreases at a load point which is a higher-load side than a first maximum output point of the solar cell and which is in the vicinity of the first maximum output point, and (ii-2) the output voltage of the solar cell rapidly increases after the rapid decrease of the output voltage of the solar cell in the vicinity of the first maximum output point, said output control apparatus comprising:
a first controlling device configured to sequentially increase the load in the increase area to the first maximum output for extracting the output from the solar cell;a detecting device configured to detect a decrease in the output from the solar cell with respect to the increase in the load in a process of sequentially increasing the load, the decrease in the output from the solar cell being caused by the output point of the solar cell transiting from the increase area to the transient load area; anda second controlling device including a short circuit configured to short-circuit the load to an initial load in the increase area such that the output point of the solar cell returns from the transient area to the increase area, wherein:
said first controlling device being configured to sequentially increase the load again after the load is short-circuited to the initial load by the second controlling device, anda second maximum output of the solar cell when the load is changed from a high-load side to a low-load side is smaller than the first maximum output of the solar cell when the load is changed from the low-load side to the high-load side.