POTENTIAL EQUALISATION SYSTEM FOR A MODULAR MULTILEVEL CONVERTER

• Main Authors: WEBER JOHANNES, KAPELKE MARTIN, STOLTZE TORSTEN, GRIESSL JOHANNES, DAUMLER FELIX, HUBER ADRIAN, EISMANN CHRISTOPHER, ANHEUER MATHIAS, SCHRAMMEL CHRISTIAN, DALLMEIER JOHANNES, WAHLE MARCUS, HOLWEG JOHANN, RUDEK MICHAEL, BOHME DANIEL
• Format: Patent
• Language: Chinese; English
• Published: 26.02.2021
• 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; BOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLYOR DISTRIBUTION OF ELECTRIC POWER; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC SWITCHES; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; EMERGENCY PROTECTIVE DEVICES; GENERATION; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; PRINTED CIRCUITS; RELAYS; SELECTORS

The invention relates to a potential equalisation system for a modular multi-level converter (1) having a plurality of converter modules (3) which each have a direct current source (13). The potentialequalisation system comprises pole contacts (15), which are each electrically connected to one pole of a direct current source (13), and at least one electrically conductive contacting element (17),which can be moved between a first end position in which said contacting element is electrically isolated from the converter modules (3) and a second end position in which said contacting element contacts pole contacts (15) of different direct current sources (13) and can be placed onto an earth potential. 本发明涉及一种用于模块化多电平变流器(1)的电势均衡系统，模块化多电平变流器具有多个变流器模块(3)，变流器模块分别具有直流电压源(13)。电势均衡系统包括极触点(15)和至少一个导电的接触元件(17)，这些极触点分别与直流电压源(13)的一个极电气连接，该接触元件能够在第一端位置与第二端位置之间移动，在第一端位置，接触元件与变流器模块(3)电气分离，在第二端位置，接触元件与不同的直流电压源(13)的极触点(15)接触并且能够置于地电势。