POWER CONVERSION SYSTEM

• Main Authors: TAKAHASHI MASAYA, TSUJI NAOTAKA, TAKEGAWA KAZUKI, OTSUKA KAZUHIKO, ISHIBASHI SATOSHI
• Format: Patent
• Language: Chinese; English
• Published: 26.07.2019
• 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; SYSTEMS FOR STORING ELECTRIC ENERGY

A power conversion device includes a backup power source as a power source for a discharge controller that discharges electric charges of a capacitor, and an abnormal state in the backup power sourceor loads is not capable of being dealt with when power is supplied to loads from the backup power source, which makes an output voltage of the backup power source be in an abnormal state. In order tosolve the problem, when an abnormality occurs in the backup power source or in loads and the abnormality is detected in power supply from the backup power source, a place where the abnormality occursis specified. When the specified place where the abnormality occurs is a load, power supply to the load is stopped, thereby preventing the output voltage of the backup power source from being abnormaleven when an abnormality occurs in part of power supply destinations. 作为使功率转换系统的电容器的电荷放电的放电控制部的电源包括备用电源，在从该备用电源向负载进行供电的情况下，由于无法应对备用电源或负载变成异常状态的情况，因此，备用电源的输出电压变成异常状态。为了解决该问题，在备用电源或负载发生异常、来自备用电源的供电中检测出异常的情况下，确定异常发生部位，在所确定的异常发生部位为