Dynamic voltage stability for embedded electrical networks in marine vessels using FACTS devices

Abstract

Sophisticated techniques are required for getting accuracy in high frequency power losses of magnetic. This paper presents a high frequency power loss measurement platform (full bridge) that provides accurate assessing of losses in magnetic components. This is obtained by a construction of a thermal shunt with radiator to measure the losses of the bridge. An aluminum strip is used as a "thermal resistor". Two NTC resistors measure the temperature drop across the aluminum strip. The magnetic device loss equals the DC input power of the platform minus the bridge loss. The copper loss can be estimated while using litz wire. Using litz wire windings with sufficiently low diameter of the strands allows neglecting eddy current losses, thus measuring only DC resistance is enough for calculating of copper losses. It can be checked by an RLC meter if the assumption is reasonable. The proposed approach and platform are verified by realization and experiments with a full bridge converter based on SiC switches and operating in frequency range of 50 kHz to 1 MHz. The proposed platform can be used for obtaining the frequency dependence of core losses of magnetic materials, as well as the dependence on duty ratio of the power converter.

Nonlinear optimal control with effective wind speed estimation for maximum power extraction based on adaptive fuzzy logic controller and extended Kalman Filter

“…is the reference frame, then the model of PMSG generators and PWM rectifier can be expressed in the reference frame as follows [53][54][55]:…”

“…In this control, the voltage orientation strategy is used to regulate the DC voltage link of PWM rectifier. This technique is described and detailed in various research papers [54,58]. Moreover, the principle of the VOC strategy is based on orienting the current and voltage vectors in the same direction for obtaining a unity power factor.…”

“…For that, the direct current reference must be equal to f , , are used in the internal current loops. This crosses coupling terms are given by [54]:…”

A review of FACTS device implementation in power systems using optimization techniques

“…Fractional Levy light-BatAlgorithm [20], Hybrid Cuckoo-Search-Algorithm [21], Modified-Differential evolution [22], Combined pso-based CPF [23], numerous-sensitivity-based-approaches [24], genetic algorithm [25][26][27][28][29][30][31][32], refined-power-flow-algorithm [33], multiverse optimizer [34], reactive power dispatch problem [35], adaptive grass hooper optimization [36], Heuristic-Techniques [37], MILP-based-OPF [38], AWO-optimization [39], Gravitational-search-assisted algorithm [40][41][42], whale-optimization-algorithm [43,44], novel-lightning search-algorithm [45], PSO-adaptive-G.S.A. hybrid-algorithm [46], self-adaptive-DE-algorithm [47], fuzzy-harmony search algorithm [48], imperialisticcompetitive-algorithm [49], quasi-oppositional-chemical reaction optimization [50], brain-storm-optimization-algorithm [51], hybrid immune algorithm [52], teachinglearning-based-optimization [53], marine-vessels-analysis [54], optimal-power-flowproblem [55], evolutionary-particle swarm optimization [56], blended-moth flame optimization [57], population-based-evolutionary-optimization [58], MOPSO-algorithm [59], particle-swarm...…”