| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce a size of an electric wire to be used, to reduce cost of the electric wire and to miniaturize a power conversion apparatus. <P>SOLUTION: An input transformer 2 is arranged at a lower part of a closed board 1. A plurality of unit inverters 3 are vertically and horizontally disposed at an upper part. A plurality of the unit inverters 3 are connected to secondary winding of the input transformer 2 through wiring 9. An exhaust duct 5 is arranged at the back in a depth direction of a plurality of the unit inverters 3 in the closed board 1 so that it extends in a height direction. A ventilation fan 7 is arranged above the exhaust duct 5. A hood 8 where a lower opening is arranged to surround an upper end of winding of the input transformer 2 and an upper end opening is connected to a lower end opening of the exhaust duct 5 is arranged below a plurality of the unit inverters 3. Wiring 9 is arranged outside the hood 8, so that it is hard to receive thermal effect by cooling wind of a raised high temperature by cooling the input transformer 2. <P>COPYRIGHT: (C)2009,JPO&INPIT |
