To improve the performance of the surface permanent magnet synchronous motor drives, a
sensorless control scheme based on the sliding-mode observer with an orthogonal phase …

During the grid synchronization of distributed generation (DG) units, phase-locked loop
(PLL) is well accepted as an efficient approach to detect grid phase angle. Conventional …

This paper deals with the improvement of the transient response and harmonic,
subharmonic, and dc-offset voltage rejection capability of a grid voltage sequence detection …

This paper explores the impact of the output impedance on the active and reactive power
flows between parallelized inverters operating with the droop method. In these systems, a …

Condition monitoring power semiconductor devices can inform converter maintenance and
reduce damage. This paper presents a method to monitor solder fatigue in a voltage source …

This paper proposes a novel variable sampling period filter phase-locked loop (VSPF-PLL)
for use in the general area of three-phase systems. It is based on the concept of variable …

Selective harmonic extraction plays an important role in power quality assessment,
harmonic compensation, and so on. Among the various methods, discrete Fourier transform …

This paper presents a two-stage three-phase solar photovoltaic (PV) system, which is
controlled through a novel enhanced second order generalized integrator (ESOGI) based …

This paper applies the adaptive gradient descent method to the second-order generalized
integrator (SOGI) filter in order to find an online estimation algorithm for the grid frequency …

The proper operation of single-phase and three-phase grid-connected power converters
depends on the synchronization with utility networks. The major challenge of the …