AC/AC converters that do not have a DC energy storage element, such as a matrix chopper
and a matrix converter, are increasingly becoming alternatives to conventional two-stage …

Clocks are inherently out-of-equilibrium because, due to friction, they constantly consume
free energy to keep track of time. The thermodynamic uncertainty relation (TUR) quantifies …

This paper deals with single-phase grid synchronization unit suitable for integration in
interface converters of distributed renewable energy sources. A well known problem of the …

Phase synchronization and frequency tracking are essential part of control unit design for
the grid-tie power converter of the efficient energy conversion system. A robust but …

In the case of the electric propulsion system on the vessel, Diode Front End (DFE) rectifiers
have been applied for large-sized ships and Active Front End (AFE) rectifiers have been …

Renewable energy sources and energy storage devices are becoming more popular. Some
of them like small hydropower turbines, wind turbines and diesel generators produce AC …

This study presents integration of a real-time energy monitoring and control system with an
advanced reactive power compensation unit based on fixed capacitor-thyristor controlled …

Zero-crossing detection (ZCD) circuits are widely utilized to synchronize power electronics
converters with the grid and measure frequency and phase angle. They are usually …

Fault diagnosis of rotor asymmetries of induction machines (IMs) using the stator current
relies on the detection of the characteristic signatures of the fault harmonics in the current …

Accurate grid synchronization unit is essential for reliable operation of grid converters.
Single-phase unit may utilize measured function and its digital derivative as the base for …