POWER CONDITIONER

PROBLEM TO BE SOLVED: To provide a power conditioner capable of improving stability of power supply during autonomous operation, by reporting whether or not a power generation amount of a solar cell is in short while handling sudden change of the power generation amount of the solar cell by using a storage battery having small capacity.SOLUTION: A power conditioner comprises: a generated power input part 13 to which power generated by a solar cell 2 is input; a storage power input part 18 to which storage power discharged from a storage battery 3 is input; an inverter 15 for converting the generated power and storage power to AC power to output the AC power to a load 8, during autonomous operation; discharge operation control means 19 for discharging the storage battery 3 under a necessary condition that the power generated by the solar cell 2 is insufficient for power consumption of the load 8 during the autonomous operation; and reporting means for reporting shortage of the generated power on the basis of whether or not the storage battery is being discharged. 【課題】小容量の蓄電池で太陽電池の発電量の急変に対応しつつ太陽電池の発電量が不足しているか否かを報知することにより自立運転時の電力供給の安定性を向上することのできるパワーコンディショナを提供する。【解決手段】太陽電池２が発電する発電電力を入力する発電電力入力部１３と、蓄電池３が放電する蓄電電力を入力する蓄電電力入力部１８と、自立運転時に発電電力及び蓄電電力を交流電力に変換して負荷８に出力するインバータ１５と、自立運転時に負荷８の消費電力に対して太陽電池２の発電電力が不足することを必要条件として蓄電池３から放電させるための放電動作制御手段１９と、蓄電池３から放電しているか否かに基づいて発電電力不足であることを報知する報知手段とを備える。【選択図】図１