Title :
Loss balancing for Active-NPC and Active-Stacked-NPC multilevel converters
Author :
Floricau, D. ; Floricau, E. ; Parvulescu, L. ; Gateau, G.
Author_Institution :
Fac. of Electr. Eng., Politeh. Univ. of Bucharest, Bucharest, Romania
Abstract :
The paper is focused on the numerical calculation of total losses in each power device of 3L-ANPC (Active-NPC) and 3L-ASNPC (Active-Stacked-NPC) multilevel converters in a STATCOM application. Due to the symmetry of the structures the conduction and switching losses are calculated only for half of power devices. The modulation functions and the conduction/switching intervals are elaborated in order to calculate the total losses. These are specific for each power device depending on the structure´s type and on the PWM strategy. The obtained results for conduction currents (average and RMS values) are validated using PSIM simulations.
Keywords :
PWM power convertors; losses; static VAr compensators; switching convertors; STATCOM; active-stacked-NPC multilevel converters; conduction losses; loss balancing; neutral point clamped topology; power device; switching losses; Automatic voltage control; Capacitors; Clamps; Pulse width modulation; Semiconductor diodes; Switches; Switching converters; Switching frequency; Switching loss; Topology;
Conference_Titel :
Optimization of Electrical and Electronic Equipment (OPTIM), 2010 12th International Conference on
Conference_Location :
Basov
Print_ISBN :
978-1-4244-7019-8
DOI :
10.1109/OPTIM.2010.5510438
