| 摘要 |
PROBLEM TO BE SOLVED: To accomplish charged level control and anomaly detection appropriate to the service conditions. SOLUTION: In a capacitor power storage system, the capacitor C thereof is connected with a parallel monitor for monitoring the charging voltage and equalizing charged levels. The capacitor power storage system is provided with charging control means 4 and 11 that vary the full charged voltage, depending on the voltage monitor signal from the parallel monitor and the service condition and varies the full charged voltage, depending on the service environment. The parallel monitor includes a comparator 12 for detecting the voltage at a set initialization level and the bypass circuit T of the capacitor, which bypass circuit uses as control input the output of the comparator. The charging control means 4 and 11 keep the control input on for a certain period of time, if the initialization level is detected at any of a plurality of capacitors, sets a full charged voltage based on the overall voltage, after the lapse of the certain period of time, and controls the full charged voltage according to the service condition, to increase the working voltage to prevent reduction in the capacitance at midwinter or in a cold district and decrease the full charged voltage to prevent deterioration in hot district. |
