1. Types of Electric Networks 1.1 Definitions for Active and Passive Components 1.2 Alternative Definitions 1.2.1 Modeling a Capacitor 1.2.2 Modeling an Inductor 1.2.3 Alternative Definition of Active Circuits 1.3 Active Circuits in Power Electronics 2. Active Filters 2.1 Voltage Source Inverter (VSI) as Active Filter 3. Power in Three Phase Systems 3.1 Alternative Expressions 3.2 Active Filter...

The nonlinear load such as UPS, fan controller, mobile charger is distorting the supply current waveform. This current harmonics derates the power system equipment. To avoid this current harmonics, filters namely passive filter / active filter /hybrid filters are introduced in the supply line. In this paper the overall view of the performance of the various filters are studied and the performan...

This paper presents a single-phase inverter with multilevel topology adopted to interface photovoltaic systems with the electrical power grid, and at the same time, to eliminate harmonics currents and to compensate reactive power, operating as shunt active power filter. Multilevel inverters have been attracting increasing attention in the past few years as power converters of choice in high vol...

An inherent problem of single-phase rectifiers is the existence of a pulsating portion in the input power, which pulsates at twice the grid frequency. If this pulsating power is transferred to the DC-link, it causes a significant amount of second-order harmonic at the output voltage. Since in many applications, such a high level of DC oscillation is not acceptable, so the pulsating power must b...