| 摘要 |
PROBLEM TO BE SOLVED: To eliminate unbalance of current flowing into each switch unit of a large capacity power converter including a large number of parallel connections of switch unit and also simplify the structure of the large capacity power converter panel. SOLUTION: The switch units of single phase is arranged horizontally in a line as many phases as required in the vertical direction on the same plane, and these switch units are divided to be horizontally symmetrica. The positive and negative poles of the switch units in the left side are terminated with a left side positive conductor plate 21 and a left side negative conductor plate 26 which are horizontally symmetrical, the left side positive terminal plate 22 and the left side negative terminal plate 27 are guided from the center of these right and left sides, and these are overlapped via an insulation plate. For the right side unit switches, the right side positive conductor plate 23 and the right side positive terminal plate 24 are overlapped via an insulation plate, while the right side negative conductor plate 28 and the right side negative terminal plate 29 are also overlapped via an insulation plate, and the right and left positive and negative terminal plates are converted with each other with the positive terminal conductor 34 and negative terminal conductor 35. In addition, the center of positive terminal conductor 34 is connected to the positive terminal of the smoothing capacitor 2 via a DC fuse 3 and the negative terminal of the smoothing capacitor 2 is connected to the center of the negative terminal conductor 35. |
