Title :
Capacitor size reduction for multiple inverter systems
Author :
Orfanoudakis, G.I. ; Sharkh, S.M. ; Yuratich, M.A.
Author_Institution :
Univ. of Southampton, Southampton, UK
Abstract :
Multiple inverter systems are examined from the aspect of their DC-link capacitors. A common capacitor is assumed and its current spectrum is derived for single and three-phase inverter systems. The effect of introducing a phase shift between the inverter reference or carrier waveforms is investigated, to reveal potential reductions in DC-link capacitor rms (ripple) current. It is shown that significant reductions of 40% 50% in the capacitor rms current can be achieved, especially for three-phase inverter systems. The results are verified by simulations using MATLAB-Simulink.
Keywords :
capacitors; invertors; phase shift keying; DC link capacitors; capacitor size reduction; carrier waveforms; current spectrum; inverter reference; multiple inverter systems; phase shift; three phase inverter systems; DC-link capacitors; Multiple inverter systems;
Conference_Titel :
Renewable Power Generation (RPG 2011), IET Conference on
Conference_Location :
Edinburgh
DOI :
10.1049/cp.2011.0218
