| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technology for preventing passage of zero-phase current in a multiple inverter device in which multiple inverters are connected in parallel on the secondary side of a transformer. <P>SOLUTION: In the multiple inverter device, each phase output end of a unit inverter that converts direct-current voltage applied to a direct-current capacitor into three-phase alternating-current voltage is connected to one end of the primary winding of an open-winding transformer; each phase output end of another unit inverter is connected to the other end of the primary winding; and multiple sets of a unit inverter pair comprised of the two unit inverters and the open winding are connected in parallel. The direct-current capacitor connected to each unit inverter is individually electrically insulated. <P>COPYRIGHT: (C)2010,JPO&INPIT |
