POWER MODULE FOR A CONVERTER AND MULTILEVEL CONVERTER

• Main Authors: WAHLE MARCUS, ECKEL HANS-GUNTER, SCHMITT DANIEL, SCHREMMER FRANK
• Format: Patent
• Language: Chinese; English
• Published: 10.04.2020
• 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; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The invention relates to a power module (3) for a converter (1), in particular for a multilevel converter. The power module (3) comprises a link circuit capacitor (30), two connection terminals (32, 33), at least one half-bridge (34) connected in parallel with the link circuit capacitor (30) and having two semiconductor switches (36, 37), and, for each half-bridge (34), a bypass diode (42) connected in parallel with a first semiconductor switch (36) of the half-bridge (34) and a load-relief circuit group (40) connected in parallel with the first semiconductor switch (36), which load-relief circuit group comprises a load-relief thyristor (44) and a load-relief diode (46) connected in series with the load-relief thyristor (44). 本发明涉及一种用于变流器(1)，特别是用于多电平变流器的功率模块(3)。功率模块(3)包括中间电路电容器(30)、两个连接端子(32，33)、与中间电路电容器(30)并联连接的、具有两个半导体开关(36，37)的至少一个半桥(34)，以及针对每个半桥(34)与半桥(34)的第一半导体开关(36)并联连接的旁路二极管(42)和与第一半导体开关(36)并联连接的放电电路组(40)，放电电路组具有放电晶闸管(44)和与放电晶闸管(44)串联连接的放电二极管(46)。