3-Level Type Configuration Main components of Hyosung STATCOM are 2 sets of Inverter, DC Capacitor Bank, Transformer, Cooling system and Control and Protection system. 3-phase Converter Inverter DC Link Transformer 3�� GIS GNDing TR. Control& Protection System Cooling System Protection Panel CCP Controller Components Transformer GIS/GIB Inverter Room Inverter Pole Cooling System Controller I 08 09 STATCOM STATic Synchronous COMpensator
3-Level Type Operation Basic system configuration of STATCOM system is shown in below and it consists of 3-level inverters using IGCT device. Two identical 12 pulse, three level inverters are connected to a common DC capacitor bank, the combining output through STATCOM Transformer, 24 pulse harmonic neutralized inverter can be configured. ? Operating [3 LEVEL �� 24 PULSE] D E F -30�� 0�� Each Inverter Output from 3 Output from Phase Inverter Pole Voltage Transformer Pole A B C ? 24-Pulse Output 24-Pulse 345kV Line Voltage STATCOM Output Current STATCOM Output Voltage 1 0 12-Pulse 90�� lead Inverter #1 -1 12-Pulse Inverter #2 0 2 4 6 8 10 12 14 16 (ms)