The invention relates to a laminated
busbar structure suitable for parallel connection and modular application of discrete devices, belonging to the technical field of
semiconductor devices. The laminated
busbar includes an AC output
busbar, a positive busbar and a negative busbar, wherein the negative busbar is used to connect the power device of the lower bridge arm and the negative terminal of the
capacitor module, and the positive busbar is used to connect the power device of the upper bridge arm As well as the positive terminal of the
capacitor module, the AC output busbar is connected to the positive busbar through the power device of the upper bridge arm, and connected to the negative busbar through the power device of the lower bridge arm. A laminated busbar structure suitable for parallel connection is formed by combining multiple laminated busbar units and multiple sets of discrete devices, which reduces the parasitic
inductance and the difference in
inductance of each
branch is small, and can be reduced by increasing the number of devices in the vertical direction It is suitable for various current levels, and the entire busbar structure can be copied horizontally to form a three-phase
system, which is convenient for
assembly and maintenance. This modular feature makes the patented busbar structure more widely applicable.