SOLAR BATTERY CONTROL DEVICE

PROBLEM TO BE SOLVED: To provide a solar battery control device for exerting MPPT control with a power generation current of a solar battery mounted in a vehicle used as a controlled variable.SOLUTION: A solar battery control device comprises: a solar battery mounted in a vehicle; a load circuit which is connected to the solar battery and configured to be able to control a power generation current to be input of the solar battery; and a control unit executing MPPT control to search for a maximum power point of the solar battery, the control unit executing the MPPT control while changing the power generation current within a range equal to or smaller than a predetermined upper limit value ilmt when a vehicle velocity v detected by a vehicle velocity detection unit of the vehicle is higher than a predetermined velocity vth, the predetermined velocity being set lower than a vehicle velocity of the vehicle at which a change in the power generation current under the MPPT control cannot be tracked for output characteristic fluctuations in the power generation current and a power generation voltage of the solar battery in response to a behavior of the vehicle during traveling, and the predetermined upper limit value being set to be a value smaller than a short-circuit current of the solar battery which falls by the output characteristic fluctuations.SELECTED DRAWING: Figure 4 【課題】車両に搭載された太陽電池の発電電流を制御変数としてＭＰＰＴ制御を行う太陽電池制御装置を提供する。【解決手段】車両に搭載された太陽電池と、前記太陽電池に接続され、入力される前記太陽電池の発電電流を制御可能に構成された負荷回路と、前記太陽電池の最大電力点を探索するＭＰＰＴ制御を実行する制御部であって、前記車両の車速検出部により検出された車速ｖが所定速度ｖthより高い場合、前記発電電流を所定の上限値ｉlmt以下の範囲で変化させながら前記ＭＰＰＴ制御を実行する制御部を備え、前記所定速度は、走行中における前記車両の挙動に伴う前記太陽電池の発電電流及び発電電圧の出力特性変動に対して、前記ＭＰＰＴ制御における前記発電電流の変化が追従できなくなる前記車両の車速より低く設定され、前記所定の上限値は、前記出力特性変動により低下する前記太陽電池の短絡電流より小さい値に設定されることを特徴とする。【選択図】図４