1. ABB, It’s time to connect, 7th edn. 2013
2. B. Jacobson, P. Karlsson, G. Asplund, L. Harnefors, T. Jonsson, VSC-HVDC transmission with cascaded two-level converters, CIGRÉ SC B4 Session 2010, 2010
3. B. Jacobson, Y. Jiang-Hafner, P. Rey, G. Asplund, M. Jeroense, A. Gustafsson, M. Bergkvist, HVDC with voltage source converters and extruded cables for up to ±300 kV and 1000 MW, in Cigre session, 2006, pp. B4–105
4. C. Oates, C. Davidson, A comparison of two methods of estimating losses in the Modular Multi-Level Converter, in Proceedings of the 2011-14th European Conference on Power Electronics and Applications (EPE 2011), 2011, pp. 1–10
5. A. Kopta, M. Rahimo, U. Schlapbach, R. Schnell, D. Schneider, High Voltage SPT+ HiPak modules rated at 4500V (PCIM, Nürnberg, 2007)