POWER CONDITIONER

PROBLEM TO BE SOLVED: To provide a power conditioner which allows for easy specification whether or not reduction of the amount of power generation is due to deterioration of the power conditioner.SOLUTION: A control unit 6 of a power conditioner 2 calculates the conversion efficiency of the power c...

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Bibliographische Detailangaben
Hauptverfasser:	TAODA NAOKI, INOUE KIYOHARU, TSUCHIYA TOMONORI, NARAKI TATSUMASA, UCHIKURA SEIJI, WAKAYAMA YOSHIHIRO, MAEKAWA YOSHIHIKO, IGARI KEIICHI, HAMAYA YOSHIKAZU, YOSHIDA YOSUKE, INOUE TOMOHARU, OGURA AKIHIRO, IMI YASUNORI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a power conditioner which allows for easy specification whether or not reduction of the amount of power generation is due to deterioration of the power conditioner.SOLUTION: A control unit 6 of a power conditioner 2 calculates the conversion efficiency of the power conditioner 2 based on the input power and output power thereof, and stores the maximum value of conversion efficiency thus calculated every predetermined period. The fact whether or not the conversion efficiency of the power conditioner has lowered can be grasped quickly and exactly, by comparably displaying the maximum value of conversion efficiency thus stored in an up-to-date predetermined period, and the maximum value of conversion efficiency in an earlier predetermined period on a display section 12 for maintenance. 【課題】発電量低下の原因がパワーコンディショナの劣化によるものなのか否かの特定が容易なパワーコンディショナを提供する。【解決手段】パワーコンディショナ２の制御部６が、パワーコンディショナ２の入力電力と出力電力とに基づいてパワーコンディショナ２の変換効率を演算するとともに、演算した変換効率の最大値を所定期間毎に記憶する。そして、記憶された最新の所定期間における変換効率の最大値とそれ以前の所定期間における変換効率の最大値とをメンテナンス用の表示部１２に比較可能に表示することで、パワーコンディショナの変換効率が低下しているか否かを迅速かつ的確に把握できるようにする。【選択図】図１