TITLE:
Implementation & Comparative Analysis of 10, 18 & 24 Level Diode Clamped Inverters Using “Trust Region Dog Leg” Method
AUTHORS:
Haider Ali, Mohamed Z. H. Qawaqzeh, Muhammad Abbas, Takialddin Al Smadi
KEYWORDS:
DCMLI, THD, Switching Angles, IGBTs, Trust Region Dog Leg
JOURNAL NAME:
Circuits and Systems,
Vol.6 No.3,
March
25,
2015
ABSTRACT: Multilevel
inverters are used in many industrial applications because of good power
quality, minimum losses and less harmonics contents. Multilevel inverters
require no series connected synchronized switching devices, transformer and
complex filters. In this paper 10, 18, 24 diode clamped multi-level inverters
(DCMLI) are implemented using trust region dog leg optimization method to find
the optimized values of switching angles (θ).
It decreases the total harmonic distortion (THD) of the output voltages and to
reduce the complexity of external filter required. The multi-level inverters
are implemented in MATLAB Simulation and results are compared in terms of
harmonics, system complexity and efficiency.