In this paper, a simple control scheme of single-phase shunt active power filter for current harmonics and reactive power compensation of linear and non-linear loads, is proposed. Simplicity of the proposed control scheme is based on uncomplicated reference source current generation and fuzzy logic based dc bus voltage regulation methods. Thus, complex computations are not needed. To indicate r...

High source current harmonics is a major problem faced by Electrical Engineers in power systems. Shunt Active Filter is a popular device in FACTS family generally used to reduce the source current harmonics. The non linear loads in a multi bus system demand reduction in the harmonics so that the line losses and heat can be reduced. The objective of this work is to reduce harmonics in the lines....

With significant development of power converter technologies, there has been a rise of interest in an active power filter (AF). It is now well known that an active filter can easily compensate for harmonic current contents in the load current by inserting negative harmonics into the power network [B3]-[B10]. Basic principle of an active harmonic compensation is shown in Fig. 2.1. The AF can can...

This paper proposes a new single phase transformerless Photovoltaic (PV) inverter for grid connected systems. It consists of six power switches, two diodes, one capacitor and filter at the output stage. The neutral of the grid is directly connected to the negative terminal of the source. This results in constant common mode voltage and zero leakage current. Model Predictive Controller (MPC) tec...

In 2006 the set up of one test bench for superconducting magnets of FAIR was finished at GSI. A second one is under construction. After commissioning of both test stands magnetic measurements of up to 8 superconducting magnets per month will be possible. The dedicated power converter must supply DC currents and ramped currents up to 11000A and provide output voltages up to +/-100V. This gives a...

A low-power 1.6-GHz phase-locked loop (PLL) based on a novel supply-regulated voltage-controlled oscillator (SR-VCO) including an active-loop filter (ALF) is realized. In this PLL, an active RC filter is combined with SR-VCO, achieving the advantages of ALF PLL without penalties in power consumption or phase noises. The PLL has measured rms jitter of 4.82 ps, and its core consumes 990 μW from 1...

Harmonic currents are introduced into power system as use of nonlinear electrical loads increases. Extra losses caused by harmonic current stream effective supply lines. A dynamic filter engenders compensating using a switching inverter. Single-phase the connects in parallel to load end and inject required feeder avoid direction system. This report discusses problem, available mitigation techni...

Active power filters most of the times are employed for elimination of the harmonics created by non-linear loads in power system and for reactive power compensation of linear and non-linear loads. Compensating current is sent by shunt active power filter (SAF) at Point of Common Coupling (PCC) to mitigate current harmonics in the line. Hence sinusoidal nature of current and voltage waveforms ar...