A phase-locked loop (PLL) is a nonlinear negative-feedback control system that
synchronizes its output in frequency as well as in phase with its input. PLLs are now widely …

The world wide increasing applications of nonlinear loads, mostly consisting of power
electronics devices, have made the power quality problems a vital issue than ever before …

This paper presents a method for addressing the dc component in the input signal of the
phase-locked loop (PLL) and notch filter algorithms applied to filtering and synchronization …

The actual grid code requirements for the grid connection of distributed generation systems,
mainly wind and photovoltaic (PV) systems, are becoming very demanding. The …

Filling the gap in the market dedicated to PLL structures for power systems Internationally
recognized expert Dr. Masoud Karimi-Ghartemani brings over twenty years of experience …

The industry of solar photovoltaic (PV) energy and its application is still booming to enhance
the sustainability of the society. When PV systems are connected to the grid, challenging …

Frequency is one of the most important factors for power system harmonic and interharmonic
estimation. Accurate spectral analysis relies much on the correct identification of frequencies …

A method is proposed for estimating inter-harmonic frequencies in power system voltage
and current signals. The method is based on a spectrum-estimation method known as …

The discrete Fourier transform (DFT) is still a widely used tool for analyzing and measuring
both stationary and transient signals in power system harmonics. However, the …

To detect the rotor angle of the permanent-magnet (PM) synchronous motor (PMSM), two
linear Hall sensors are utilized to measure the fringe field of the PM from one end of the …