Connection structure of rectifier unit

The utility model relates to a rectifier unit connecting structure. Presently, when a rectifier transformer has an in-phase counter parallel connecting structure, the rectifier unit must have the same structure. In-phase counter parallel connection is a technique to reduce inductance when AC conducting busbar current is high and conducting busbar distance is long. However, when AC conducting busbar distance is short, DC system voltage is high, the component used is 4 inches or above in size, the disadvantages of high loss, high cost, frequent and inconvenient maintenance will be revealed. The rectifier bridge arm of the utility model is in a structure wherein components are mounted symmetrically around the shaft. Provided the number of rectifier cells of the bridge arm busbar remains unchanged, each group is in a negative or positive sharing arrangement, and the circuit incoming lines are symmetric. Accordingly, the length in the current flow direction is shortened, loss and cost reduce, maintenance work reduced and facilitated.