A quad-input LLC converter for photovoltaic (PV) application is proposed in this paper. In topology, a single resonant tank utilized to transfer the energy from four PV panels output by using two Y configurations of switches. The PWM generation all these switches depends on switching frequency and three phase shifts. An MPPT control strategy based Perturb Observe (P&O) method has been paper ensure independent maximum power point tracking (MPPT) panels. zero-voltage (ZVS) across wide input...

Provided herein is a detailed analysis of the Brillouin properties alumina-doped silica optical fiber. The acoustic velocity alumina in shown to be very strong function its mass density, which can vary significantly from sample-to-sample and likely originates observed linear relationship between longitudinal elastic modulus density. Further, refractive index versus concentration provides sensitive probe this used derive other structural details about alumina. For example, for first time best...

This paper proposes a multiport converter that integrates PV, battery, supercapacitor, and the dc-link for solar electrical vehicle (SEV) applications. The proposed design addresses two main challenges of EV: 1) partial shading on different sides SEV 2) improving acceleration deacceleration operation SEV. A dual-input LLC (DLLC) can help PV panels to achieve their respective MPPs individually by changing switching frequency phase shift. On other hand, bidirectional hybrid dc-dc plays...

This paper proposes a multi input DC-DC converter that integrates four photovoltaics (PV) panels is typically followed by second stage of grid-tied inverter. topology uses single LLC resonant tank to supply the output using half-bridge converters. Maximum power point tracking (MPPT) algorithm for all PV module designed degrees freedom. The switching frequency and three phase shifts ensures accurate pulse width modulation (PWM) switches while achieving zero-voltage (ZVS) across wide range...

This paper presents an exact steady-state time-domain analysis of the dual-input LLC converter. The converter interfaces two PV panels regulated via phase-shift modulation (PSM) to achieve dual maximum power point tracking (MPPT) while load is controlled by frequency-shift (FSM) technique. detailed mode-by-mode operation and are presented derived over one switching cycle according three parameters: frequency, phase shift, weight. Furthermore, DC gain equations each photovoltaic (PV) panel...

Oxidation and hot corrosion occur on metallic parts of gas turbines account exposure to high temperature. Thermal barrier coatings (TBCs) are used protect turbine components made Ni-based superalloys from temperature oxidation as well corrosion. The stability coated is higher than that non-coated ones. Suitable coating crucial for obtaining inlet However, the problem conventional TBC system failure yittria-stabilized zirconia (YSZ) top coat due formation thermally grown oxide (TGO) layer...

We report a study of attenuation spectra’ transformations in couple Cerium (Ce) doped alumino-phospho-silicate fibers (one them codoped with gold (Au)), occurring under irradiation by beam high-energy β-electrons. The experimental data reveals an essential effect β-irradiation upon the absorptive properties fibers, given noticeable susceptibility Ce ions Ce3+/Ce4+ valence states to treatment, arisen as growth followed saturation induced absorption. also posterior bleaching β-darkened terms...

A novel four-port LLC converter for renewable energy application is proposed in this paper. The interfaces two Photovoltaic (PV) panels and one battery on the primary side whereas load secondary side. This topology allows three ports to share a single resonant tank through hybrid full-bridge structure. port of bidirectional balance demand generation from PVs. Two PVs are regulated via phase-shift modulation (PSM) harvest maximum power control operation, by Switching Frequency Modulation...

In this paper, a Bidirectional DC-DC Converter (BDC) for the Electrical Vehicle (EV) application is proposed. The converter benefits advantages of both switched-inductor and switched-capacitor converters. proposed has wide voltage gain range, low stress on power switches, common ground between grounds input output sides. addition, synchronous rectification utilized to achieve Zero Voltage Switching (ZVS) during turn off dead time, which enhance efficiency converter. operating principle...

This paper presents a comprehensive time-domain analysis of the dual-input LLC converter. By utilizing PSM and FSM, converter power stage interfaces two photovoltaic (PV) panels to achieve maximum point tracking (MPPT). The detailed mode-by-mode operation steady-state are derived using three parameters: switching frequency, phase shift, load weight. Furthermore, DC gain equations each PV panel their characteristic curves derived. In addition, waveform boundaries ZVS discussed as well....

This paper presents a control strategy for novel three-port DC-DC-AC converter based on dual active bridge and interleaved boost topology connected to PV, battery, grid. We use model predictive (MPC) framework provide actions in both islanded grid-connected mode of operation. The objectives are output voltage regulation when power flows between port-1 port-3, maximum point tracking (MPPT) during operation port-2, reactive while operating mode. different flow modes the have been represented...

This paper proposes a double-loop maximum power point tracking (MPPT) algorithm that identifies and tracks the maximum-power operating of phase-shifted dual-input LLC converter for photovoltaic (PV) applications. The employs two search loops; first (inner) loop allocates optimal phase-shift, while second (outer) switching-frequency. uses variable step size in each loop. Besides its high convergence speed, is highly robust requires no tuning as it adapts to any condition. Derivation followed...

This paper proposes a multi-input hybrid DC microgrid system to combine renewable energy sources like photovoltaics (PV), wind with storage by applying fast adaptive controls based on the Model Predictive Control (MPC) method. The proposed MPC approach will be Maximum Power Point Tracking (MPPT) approach, which is used regulate DC-DC converters connecting Photovoltaic (PV) sources. Whereas, module uses tip-speed ratio MPPT method for switching control of converter. A back-to-back converter...

This paper proposes a double Maximum Power Point Tracking (MPPT) algorithm for achieving maximum efficiency of grid-tied phase-shifted dual-PV LLC converter using the Adaptive Neuro-Fuzzy Interface System (ANFIS). The can extract power from Photovoltaic (PV) panels under various weather conditions and partial shading. dual MPPT generates switching frequency phase shift through ANFIS to regulate flow both Frequency Shift Modulation (FSM) phase-shift modulation (PSM) techniques simultaneously....

This paper proposes a dual Maximum Power Point Tracking (MPPT) algorithm using the Adaptive Neuro Fuzzy Interface System (ANFIS) to harvest maximum power from grid-tied phase-shifted dual-input LLC converter. The can simultaneously extract two Photovoltaic (PV) panels even under dynamic weather conditions and partial shading. MPPT generates duty cycle phase shift regulate flow combined pulse width modulation (PWM) phase-shift (PSM) techniques. Zero Voltage Switching (ZVS) in all primary...

The rapid increase in solar power plant installation creating considerable difficulties for system operation and control, due to the highly stochastic nature of energy. To ensure a smooth panel output, an accurate short-time forecast plays crucial role grid energy management. In this paper, problem hours ahead prediction forecasting is considered. This can significantly improve electricity cost by planning extra generation supplying loads. For case study, meteorological dataset real operated...

A five-port LLC converter for photovoltaic (PV) application is proposed in this paper. In topology, a single resonant tank utilized to transfer the energy from four PV panels output. The PWM generation of all these switches depends on switching frequency and three phase shifts. Maximum power point tracking (MPPT) achieved by adopting Perturb Observe (P&O) based control method. 500W prototype has been built tested verify operation converter. experimental results that can achieve MPPT each...