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

fYear

2010

fDate

20-22 May 2010

Firstpage

625

Lastpage

630

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Optimization of Electrical and Electronic Equipment (OPTIM), 2010 12th International Conference on

Conference_Location

Basov

ISSN

1842-0133

Print_ISBN

978-1-4244-7019-8

Type

conf

DOI

10.1109/OPTIM.2010.5510438

Filename

5510438