Voltage and harmonic stability characteristics of capacitor commutated converters applied to a BTB (back to back) system (CCC-BTB) are analyzed and compared to characteristics ofaBTB system composed of conventional line commutated converters (LCC-BTB)...
Voltage and harmonic stability characteristics of capacitor commutated converters applied to a BTB (back to back) system (CCC-BTB) are analyzed and compared to characteristics ofaBTB system composed of conventional line commutated converters (LCC-BTB). About 1 6 times larger safe operating regions can be obtained for the CCC-BTB system compared to the latter. The CCC-BTB system results in no harmonic instability problem as it has no shunt reactive compensators in the station and the adj oining AC system generates no low anti-resonance points.<br/>