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Active power filters have been used to eliminate current harmonics generated by nonlinear loads, because such loads decrease the power quality, but with the growing use of renewable energy sources interconnected to the grid is possible integrate the function of the active power Alter to the grid-connected photovoltaic-system, the functions in a single device. Due to the before mentioned the use of...
This paper presents a power density/efficiency evaluation in single phase power factor correction (PFC) applications operating in continuous conduction mode (CCM). The comparison is based on semiconductor dynamic characterization and a mathematical model for prediction of the conducted electromagnetic interference (EMI). The dynamic characterization is based on a low inductive double pulse tester...
We demonstrate theoretically and experimentally the relevance of the transversal coherence length in high-order harmonic generation (HHG). We present results in which transversal phase matching plays the leading role in the macroscopic HHG.
This paper presents a comparative analysis about the command strategies of the fourth leg of the inverter of a three-phase active power filter and why we chose the inverter structure of four branches. The aim is demonstrate the “controllability” of the four branch active filter by controlling the fourth leg. The aims of the different command strategies are both the elimination of the neutral current...
In cogeneration systems are required converters able to inject current with low harmonic content, traditionally the inverters are considered. In this paper is proposed to use the current source inverter instead of voltage source inverter, this type of inverters can accept a low input voltage to inject current to the AC mains. The operation, simulation results are presented.
Different loads demand a high current at the start-up; an example are equipments that are composed by motors, also there are some type of loads that demands large currents in short periods of time like the arc welding systems. These types of loads introduce disturbances at the input voltages, causing voltage sags or flickers. In this paper is presented a current active power filter operated as a start-up...
Different loads demand a high current at the start-up; an example are equipments that are composed by motors, also there are some type of loads that demands large currents in short periods of time like the arc welding systems. These types of loads introduce disturbances at the input voltages, causing voltage sags or flickers. In this paper is presented a current active power filter operated as a line...
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