Modularized multi-level matrix converter starting method

• Main Authors: SONG YANTAO, SHEN SHUAIHUA, OH KYUNG-BUM, LIU XUHUI, HAO JUNFANG, LI YAFENG, CAO SEN, LIU CHEN, FAN XUEFENG
• Format: Patent
• Language: Chinese; English
• Published: 30.08.2022
• 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; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention relates to a modular multi-level matrix converter starting method, which solves the problem that an M3C starting mode meets the production requirements of scheduling operation and maintenance, reduces the impact on a power module in a charging process by controlling the M3C starting method, and meets the requirement that the M3C can be in a charging state for a long time to wait for an operation command of scheduling operation and maintenance. And the safety and the reliability of the whole project are improved. Unlocking is carried out under the condition that m sub-module capacitors are cut off, the situation that the impact of unlocking on the sub-module current converter is too large is avoided, and the safety and reliability of the whole project are further improved. 本发明涉及一种模块化多电平矩阵换流器启动方法，解决M3C启动方式满足调度运维的生产需求，通过控制M3C的启动方法，减少充电过程中对功率模块的冲击，满足M3C可长期处于充电状态以等待调度运维的投运指令，提高了整个工程的安全性和可靠性。本发明在切除m个子模块电容的情况下解锁，避免了解锁对子模块换流器的冲击过大，进一步地提高了整个工程的安全性和可靠性。