| 摘要 |
PURPOSE:To realize a control circuit for an interruptible power supply equipment preventing the abnormal drop of battery voltage and capable of balancing a current share between converters. CONSTITUTION:The abnormal lowering of battery voltage is prevented by a voltage control function in the voltage control function and current control function of a converter obtained by a voltage-command generating means consisting of adders 23, 24, 25 and current control circuits 26, 27, 28 and a signal selector circuit 22 as a voltage command output means in a control circuit for the uninterruptible power equipment, and charging currents increase until the charging currents are balanced with discharge currents. All of the DC output currents of each converter are balanced within a range that the DC output currents are not changed into overcurrents by the current control function. |
