| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power converter capable of outputting voltage in different classes by one power converter without reducing a rated capacity. <P>SOLUTION: Th power converter is constituted of: an input transformer 2 having a primary winding connected to an AC power supply 1 and 3K (K is an integer of two or more) secondary winding; and three power conversion parts 3 connected to the secondary winding in a one-to-one relation and outputting three-phase voltage respectively using K unit inverters 5 outputting single-phase AC voltage having desired frequency. The power conversion part 3 is configured so as to switch modes between a serial connection mode for connecting output of K unit inverters in series and a parallel connection mode for connecting series connection bodies formed by connecting output of nearly a half of K unit inverters in series, in parallel. <P>COPYRIGHT: (C)2013,JPO&INPIT |
