Title :
ETO light multilevel inverter for STATCOM
Author :
Liu, Yu ; Doss, Shoubhik ; Song, Wenchao ; Chen, Qian ; Mundkur, Sameer Shailesh ; Zhao, Tiefu ; Huang, Alex Q. ; Bhattacharya, Subhashish
Author_Institution :
Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC
Abstract :
This paper presents a 10 MVA multilevel inverter for the application of static synchronous compensator (STATCOM). Emitter turn-off (ETO) thyristors are used as active switching devices in the inverter. The cascade multilevel inverter is based on ETO light H-bridge building block (HBBB). The technology innovations of ETO simplify the HBBB construction. Air-cooled heat pipes also decrease the cost and increase the reliability. Large turn-off SOA and self-power of ETO, modular design and multi-layer protection fatherly enhance the reliability. The optimal combination modulation strategy is used to optimize the tradeoff between switching frequencies and harmonic constraints. Finally, the paper presents the complete control strategy, including the new control for balancing individual dc capacitor voltages, and multi-layer protection as well. Experimental results are given to verify the performance.
Keywords :
bridge circuits; heat pipes; invertors; static VAr compensators; thyristors; H-bridge building block; active switching devices; emitter turn-off thyristors; heat pipes; multilayer protection; multilevel inverter; static synchronous compensator; Automatic voltage control; Constraint optimization; Costs; Inverters; Protection; Semiconductor optical amplifiers; Switching frequency; Technological innovation; Thyristors; Voltage control;
Conference_Titel :
Industrial Electronics, 2008. IECON 2008. 34th Annual Conference of IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-1767-4
Electronic_ISBN :
1553-572X
DOI :
10.1109/IECON.2008.4758480
