To provide a power-factor improvement method capable of improving efficiency of a power-factor improvement on a ship even in situations where maintenance is difficult, and capable of realizing energy conservation.SOLUTION: A controller 110 extracts a capacitor 131 corresponding to a powered heavy load 6 from database 111, detects each accumulated operating time of the extracted capacitor 131, compares the accumulated operating time with each allowable operating time stored in the database 111, and inputs the capacitor 131 whose accumulated operating time does not exceed the allowable operating time.SELECTED DRAWING: Figure 2

    【課題】メンテナンスがしにくい状況でも船舶上の力率改善の効率を向上させることができ、省エネを実現する。【解決手段】コントローラ110が、電源が入っている大負荷6に対応するコンデンサ131をデータベース111から抽出し、抽出したコンデンサ131それぞれの積算運転時間を検知し当該積算運転時間とデータベース111に記憶されたそれぞれの許容運転時間とを比較し積算運転時間が許容運転時間を超えないコンデンサ131を投入する。【選択図】図2


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    Title :

    POWER-FACTOR IMPROVEMENT METHOD AND POWER-FACTOR IMPROVEMENT SYSTEM


    Additional title:

    力率改善方法及び力率改善システム


    Contributors:

    Publication date :

    2023-04-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B63J Hilfsanlagen auf Schiffen , AUXILIARIES ON VESSELS



    Importance of power factor improvement

    Fuzzelle, W.K. | Engineering Index Backfile | 1931



    Stability Improvement of High Power Factor Converters by Swiched Capacitors

    Liu, J. / Wang, Z. / Yan, B. | British Library Online Contents | 1999


    Power factor improvement using adaptive fuzzy logic control based D-STATCOM

    Hamoud, Faris / Doumbia, Mamadou Lamine / Cheriti, Ahmed et al. | IEEE | 2017