Matrix converter (MC) is a direct energy conversation device without dc-link components. Therefore, the output of the converter is directly affected by the disturbances in the input voltages. Many researchers have made an effort to overcome this problem.In this paper, the behaviors of the MC have been investigated under the distorted input voltage conditions. A fuzzy logic control (FLC) based novel compensation method is proposed, which performs close loop control of the output current to improve the output performance of the MC. Some results are presented to prove the effectiveness of the proposed compensation technique.
In grid interactive power
converter applications, phase locked loop (PLL) algorithms are very important
to realize grid synchronization. The performance of PLL should not be affected
by adverse conditions such as voltage unbalance, harmonics, frequency and phase
changes. Otherwise, synchronization errors occur between the grid interactive inverter
and the grid. In this paper, two different PLL algorithms are simulated by
modeling under MATLAB/Simulink. The performances of the PLLs are comparatively
presented under four different grid conditions such as balanced, unbalanced,
harmonics and variable frequency. In this study, synchronous reference
frame-PLL (SRF-PLL) and decoupled double synchronous reference frame-PLL
(DDSRF-PLL) which are mostly used, state-of-arts and effective PLL algorithms
are analyzed by modeling in grid synchronization applications. It has also been
demonstrated the positive and negative aspects of the PLLs based on the
obtained results.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.