In order to reduce the capacity of active power filter (APF), improve its dynamic tracking speed and anti-disturbance ability harmonic currents, so as better solve problem pollution in medium high voltage distribution network, this article is suitable for networks. The three-phase three-wire injection hybrid (IHAPF) network research object, a fuzzy linear disturbance rejection controller (Fuzzy...

This paper presented a new algorithm for the performance improvement of fundamental positive sequence voltage extraction under unbalanced and distorted conditions. In this algorithm, an improved software phaselocked loop (SPLL) with a second order low-pass filter was proposed and analyzed, completely eliminating the phase detection errors of the unbalanced and distorted source voltages. The pap...

Power quality (PQ) has become an important topic in today’s power system scenario. PQ issues are raised not only normal three-phase systems but also with the incorporation of different distributed generations (DGs), including renewable energy sources, storage systems, and other like diesel generators, fuel cells, etc. The prevalence these comes from non-linear features rapid changing electronic...

Unified power quality conditioner is one of the advanced forms of power conditioning device, which is a combination of back to back connected series APF and shunt active power filter (SAPF) connected to a common DC link voltage. This topology will facilitates this device to have a reduced dc-link voltage without reducing its compensation capability. This device is mainly used in improving the p...

ELECTRIC utilities and end users of electric power are becoming increasingly concerned about meeting the growing energy demand. Seventy five percent of total global energy demand is supplied by the burning of fossil fuels. But increasing air pollution, global warming concerns, diminishing fossil fuels and their increasing cost have made it necessary to look towards renewable sources as a future...

Harmonic pollution of the power supply system has risen significantly in recent years due primarily to an increase of non-linear loads connected to the utility through residential, commercial and industrial customers. Power supply voltages become distorted due to the high level of undesired harmonic current drawn from the utility. Additionally, drops in fundamental voltage are caused by the int...

There is growing interest in renewable energy around the world. Since most renewable sources are intermittent in nature, it is a challenging task to integrate renewable energy resources into the power grid infrastructure. In this grid integration, communication systems are crucial technologies, which enable the accommodation of distributed renewable energy generation and play an extremely impor...

This paper aims to give a full study of the dynamic behavior of a mono-phase active power filter. First, the principle of the parallel active power filter will be introduced. Then, a dimensioning procedure for all its components will be explained in detail, such as the input filter, the current and voltage controllers. This active power filter is simulated using OrCAD program showing the validi...