POWER STORAGE DEVICE

• Main Authors: OKAMATSU SHIGETOSHI, HAYASHIYA HITOSHI, ITO TOMOMICHI, TOJO MASATERU, TEJIMA MASATO, KATO TETSUYA
• Format: Patent
• Language: English; Japanese
• Published: 24.11.2015
• Subjects: 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; PERFORMING OPERATIONS; POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSPORTING; VEHICLES IN GENERAL

PROBLEM TO BE SOLVED: To provide a power storage device capable of correcting a proper charge or discharge starting voltage regardless of a tap switching operation.SOLUTION: The power storage device is configured to adjust storage or discharge of power in a DC-side load by constituting a DC power source from an AC power source including internal impedance through a rectifier. The power storage device includes: a power control circuit for adjusting the storage or discharge of the power in accordance with a difference between the charge and discharge starting voltages and a DC voltage; and a correction circuit for correcting the charge and discharge starting voltages in accordance with an input voltage of the rectifier. Therefore, during a discharging operation of the power storage device, the discharge starting voltage is kept constant. 【課題】タップ切替操作に関係なく、適正な充電または放電開始電圧の補正を可能とする電力貯蔵装置を提供する。【解決手段】内部インピーダンスのある交流電源から整流器を介して直流電源を構成し、直流側負荷における電力の貯蔵または放出を調整する電力貯蔵装置であって、充電及び放電の開始電圧と直流電圧の差に応じて、前記電力の貯蔵または放出を調整する電力制御回路と、前記整流器の入力電圧に応じて前記充電及び放電の開始電圧を補正する補正回路とを備え、前記電力貯蔵装置の放電運転時に前記放電開始電圧を一定に保持する。【選択図】図１