Active filtering of electric power has now become a mature technology for harmonic and
reactive power compensation in two-wire (single phase), three-wire (three phase without …

Multilevel inverter structures have been developed to overcome shortcomings in solid-state
switching device ratings so that they can be applied to high-voltage electrical systems. The …

Hybrid active power filter (HAPF) consisting of passive filter and active filter in various
configurations to each other has now become preferred technology for harmonic …

Publisher Summary This chapter demonstrates the state of the art of multilevel power
converter technology, discussing fundamental multilevel converter structures and …

This paper presents the performance analysis of a hybrid filter composed of passive and
active filters connected in series. The analysis is done by evaluating the influence of passive …

Since their basic compensation principles were proposed around 1970, active filters have
been studied by many researchers and engineers aiming to put them into practical …

A high-performance single-phase online uninterruptible power supply (UPS) is proposed.
The UPS is composed of a three-leg-type converter which operates as a battery charger and …

An improved single-phase line-interactive uninterruptible power supply (UPS) is proposed
for low-power applications with low cost. The proposed UPS is comprised of two push-pull …

Smart impedance is a new way to look at hybrid active power filters. As originally proposed
in the literature, hybrid active filters were presented to improve the physical limitation of …

A simple control scheme for hybrid active power filters connected in parallel is presented
and analysed. The hybrid active power filter combines the compensation characteristics of …