| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a small and inexpensive high voltage inverter exhibiting excellent insulation in which the reliability of an insulation supporting frame for supporting each single-phase inverter cell is enhanced. <P>SOLUTION: Each single-phase inverter cell U1-U6, V1-V6 and W1-W6 is supported by an insulation supporting frame 21 provided in the panel frame 14. The insulation supporting frame 21 is constituted of a plurality of longitudinal frames 16 composed of an insulating material having L-shaped cross-section and arranged in the longitudinal direction, and a plurality of shelf frames 17 composed of insulating materials having L-shaped cross sections and arranged in the depth direction. A cut 16a formed at one side of the longitudinal frame 16 and a cut 17a formed at the end of the shelf frame 17 are fitted each other and contact faces of the longitudinal frame 16 and the shelf frame 17 are bonded through an adhesive 20. <P>COPYRIGHT: (C)2007,JPO&INPIT |
