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Analytical efficiency evaluation of VSC-HVDC transmission links

Kalcon, Giddani and Adam, Grain P. and Anaya-Lara, Olimpo and Burt, Graeme and Lo, K.L. (2013) Analytical efficiency evaluation of VSC-HVDC transmission links. International Journal of Electrical Power and Energy Systems, 44 (1). pp. 1-6. ISSN 0142-0615

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Abstract

An analytical method to calculate the efficiency of VSC-HVDC links based on two-level and three-level VSCs is presented. The method uses the average and root mean square of the VSC converter current to estimate the conversion losses in the converters (conduction and switching losses). The remaining power losses (DC cable transmission losses due to I2R, the losses in the coupling transformer, and AC harmonic filter losses) are evaluated using conventional well-known methods. Results obtained analytically are confirmed by digital simulations.