In this paper, we analyse a buck converter network containing arbitrary, up to mild regularity assumptions, loads. Our analysis begins with the primary controller where propose novel decentralised Lyapunov function for interconnection between currents and bounded integrator. We leverage on result study as cascaded voltages currents. We, in addition, distributed optimal secondary control framewo...

Self reactanceXd in direct axis ’d’ and self reactanceXq in quadrature axis ’q’ influence the load characteristics of the permanent magnet machine. Their calculation methods are known. All calculations should be verified by measurements. Measurement with AC variable voltage and frequency source applied on stator winding is correct when eddy currents do not exist. Other methods evaluate the DC c...

In this paper, a load adaptive control method to improve the efficiency and dynamic performance of the Phase-Shifted Full-Bridge (PSFB) converter which works under a wide range of load conditions is presented. The proposed control method can be used as a battery charger since this application demands a wide range of load conditions. The composition of the PSFB converter’s losses and the loss an...

This paper presents a novel method for estimating the load torque of a sensorless indirect stator flux oriented controlled (ISFOC) induction motor drive based on the model reference adaptive system (MRAS) scheme. As a matter of fact, this method is meant to inter-connect a speed estimator with the load torque observer. For this purpose, a MRAS has been applied to estimate the rotor speed with t...

Qeshm Channel is a shallow and narrow waterway located between Qeshm Island and the mainland in the vicinity of Hormuzgan Province, Islamic Republic of Iran. This channel is important because of its economic, industrial, fisheries and navigation role it plays as well as environmental issues it presents in the region. A prognostic study was performed to simulate currents in this channel, using C...

Split-winding transformer is a one of the common types with low-voltage winding placed above other and jointly high-voltage regulation winding. The paper investigates circulating currents that occur in windings case nonsymmetric load. In addition, measurement for 240MVA, 220 kV presented along numerical calculation compared measurement.

Three different conventional control strategies for extracting reference currents for shunt active power filters have been evaluated and their performance has been compared under various non linear loads. Comparison of the compensation ability of different control strategies based on THD and speed will be done and suggestions will be given for the selection of strategy to be used under differen...

The potential of adjusting the demand of certain appliances with time-flexible duty cycles is currently used for load balancing purposes only (e. g. Demand Side Management). However, a coordinated operation scheme for consumers and producers of electrical energy may also be used for grid stabilization or in general for a more efficient utilization of existing distribution grids, directly influe...

Introduction This application guide addresses the limiting conditions of connecting transformers in parallel and loading considerations when turn ratios, impedances, and kVA ratings are different. Most transformers installed in parallel have the same kVA, turn ratios, and impedances, which can make it difficult for power engineers in industrial and commercial facilities to understand circulatin...