Busbar and topological structure for neutral-point-clamped three-level structure

• Main Authors: XIN LANYUAN, CHEN ZHENGWEN, SHAO QIANG, WANG XIAONIAN, YANG TAO, YU KAIQING, ZHU WU, CHEN YANPING, SUN KANGKANG
• Format: Patent
• Language: Chinese; English
• Published: 25.05.2021
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; BASIC ELECTRIC ELEMENTS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERATION; SEMICONDUCTOR DEVICES

The invention provides a busbar for a neutral-point-clamped three-level structure, and the busbar comprises a first busbar which is of a symmetrical structure, mounting holes in the first busbar are symmetrically distributed with the center line of the first busbar as the axis, and the first busbar is used for connecting a first semiconductor module, a second semiconductor module and a supporting capacitor, the first semiconductor module comprises a first clamping diode and a first outer tube, and the second semiconductor module comprises a second clamping diode and a second outer tube; the second busbar is of a triangular plane symmetrical structure, mounting holes in the second busbar are symmetrically distributed with the center line of the second busbar as the axis and used for connecting the third semiconductor module and the first semiconductor module and connecting the third semiconductor module and the second semiconductor module, and the third semiconductor module comprises a first inner tube and a s