This paper presents a methodology for the optimal allocation and economic analysis of energy storage system (ESS) in microgrids (MGs) on basis net present value (NPV). As performance an MG strongly depends arrangement its ESS, methods operation strategies ESS devices are required MG. To optimize capacities MGs, financial benefit dynamic models discussed. And then, matrix real-coded genetic algorithm is applied to find maximal NPV, which each GA chromosome consists 2-D real number...

In this paper, a reformed compensation network based on traditional LCL topology is proposed to realize robust reaction large coupling variation that common in dynamic wireless charging application. From the perspective of smoothing, power characteristic against factor and achieve high efficiency simultaneously, extra reactive element inserted into resonant tank provide higher degree design freedom, forming improved LCC type compensated inductive transfer (IPT) system features with distinct...

In this paper, an LLC resonant converter design methodology for battery charging applications is proposed aiming at achieving high efficiency. Compared with traditional resistive or constant power load applications, the voltage and current are nonlinear vary profiles, making optimal of charger more difficult complicated. Based on characteristics a new time-weighted average efficiency (TWAE) index proposed, which represents weight conversion during period. Converter's losses calculated based...

Dynamic wireless power transmission (DWPT) is considered as a solution to the problems encountered in development of electrical vehicle (EV), such range anxiety resulted from battery bottleneck and difficulty convenient charging. However, requirement DWPT, maintaining almost constant with voltage load effective movement process, quite different Stationary WPT. The fluctuation easily brought by coupling coils over large misalignment movement. A general design method primary compensation...

With the increasing penetration of photovoltaic (PV) power system into utility network, issue caused by fluctuation and intermittence PV output draws more attention. In order to predict hourly for a without any complex meteorological instrumentation, NARX network-based forecasting model is proposed in this paper. Hottel's radiation applied calculate clear-sky incident on inclined surface at time. Furthermore, weather forecast data from public websites are taken as variables that depict cloud...

Plug-in hybrid electric vehicles' (PHEVs) integration can result in additional electricity consumers and suppliers microgrids (MGs). This paper presents a new method for optimal of PHEVs MGs, which considers the number parking numbers under scheduling PHEVs. Due to uncertainty solar energy, radial basis function network (RBFN) techniques are used forecasting photovoltaic (PV) power output. Monte Carlo simulation is deal with uncertainties associated daily distance driven PHEVs, load values,...

The efficiency of bidirectional inductive power transfer (BIPT) systems is strongly dependent on the load. Besides, soft-switching operation switches critical to high-frequency converter in BIPT systems. In this paper, a triple-phase-shift (TPS) control strategy proposed achieve load matching while realizing zero voltage switching (ZVS) for all within entire range. condition system with double-sided LCC compensation network analyzed. And dual side phase shift adjust flow matching. To realize...

In high-voltage dc-dc applications, the switches in conventional two-level dual active bridge (DAB) converter have to bear whole port voltage, so high voltage should be selected. The stress of three-level DAB can reduced half it is suitable for applications. However, part still has entire under some operation conditions with single phase-shifted (SPS) modulation strategy. A (DPS) strategy proposed converter, compared SPS strategy, expands regulating range transmission power and enhances...

Compared with the conventional two-level dual-active-bridge (DAB) dc-dc converter, three-level DAB converter could operate lower voltage rated switching devices and provide more control degrees of freedom, which enhances flexibility. This paper proposes a modulation strategy five freedom. In previous work multiple degrees, optimization strategies for efficiency or inductor current minimization are investigated; however, these all need detailed mode analysis complex mathematical tools to...

Input current around zero-crossing point is distorted and the reduction of ripple limited when applying space-vector modulation (SVM) to interleaved Vienna rectifier. In this article, a hybrid SVM method for two- channel rectifier developed reduce harmonics distortion ripple. The topology two-channel introduced. characteristics peak with are analyzed. Then, clamped used eliminate in sectors point. To ripple, phase-shifted angle carriers between two channels modified current. Furthermore,...

For the LLC series resonant converter (LLC-SRC), current inrush during startup is a threat to safe operation of main switches, and frequency-decreasing method usually adopted. The very high initial start-up frequency can suppress this effectively, but increases output demand drive ICs. In paper, variable duty cycle soft strategy based on optimal current-limiting curve presented, which realize suppression under low frequency. Due nonlinearity LLC-SRC, mode transition conditions are...

In recent years, electric vehicles (EVs) have drawn great attention due to their potential of mitigating pollution emission. Household plug-in (PEVs) are key devices discussed in this article, and potentiality as mobile energy storage is brought into fully consideration. This article presents a price optimization method for the microgrid economic operation, considering across-time-and-space transmission EVs microgrids. The object proposed minimize total cost operation. Different study cases...

Bidirectional inductive power transfer (BIPT) systems are of particular interest for electrical vehicles their enabling to exchange between grid and vehicle. In BIPT systems, it is critical keep the voltage phasors primary-side secondary-side converters synchronized regulate flow. this article, basic operation steady-state characteristics system introduced. A phase synchronization method which does not require any communication primary- controllers or complicated hardware, proposed in...

Bidirectional inductive power transfer (BIPT) systems for electric vehicles allow exchange between grid and vehicle. To achieve high efficiency under a wide range of transmission power, this article proposes dual-side asymmetrical voltage-cancelation (AVC) control technique. With the proposed AVC control, adjustment fundamental component amplitude excitation voltage, maintenance large phase angle voltages as well zero-voltage switching (ZVS) switches, optimization resonant tank can be...

The functional tea CFT-1 has been introduced into China as a nutraceutical beverage according to the “Healthy China” national project. effects on human hepatocellular carcinoma (HCC) cells remain unclear and were investigated with extract (purity > 98%). morphological changes in observed microscopes. Cell proliferation, migration, cycle distribution, apoptotic assessed by MTT, Transwell assays, flow cytometry, respectively, while telomerase inhibition was evaluated PCR ELISA assay kits....

In this paper, a novel microgrid energy trading model (METM) is proposed to determine an optimal schedule of all available units over planning horizon so as meet system, plant and unit constraints, well the load ancillary service demands. As optimization greatly depends on power generation output from renewable sources strongly weather, forecast required for METM. A neural network forecasting used predict hourly outputs. Depending module, METM utilizing genetic algorithm was developed assist...

]Supervisory Control and Data Acquisition (SCADA) Systems are used in photovoltaic (PV) power plants for monitoring, control, remote communication purposes. The ingredient of SCADA system PV is introduced this paper. In order to improve security reliability the plants, paper provides two effective solutions, access control strategy redundancy mechanism. proposed adopts some measures, such as authentication, data encryption, well role-based control. These measures can solve issues between...

Catechin epimerization is an important factor affecting tea catechin compositions and thereby quality. However, a lack of germplasms with high non-epicatechins limits relative research. Here, cultivar Y510 was firstly reported used for RNA-Seq analysis. Results showed that the (-)-gallocatechin gallate (GCG) (+)-catechin (C) contents in were at least 136 6 times higher than those Fudingdabaicha 0306I, but epicatechins (-)-epigallocatechin (EGC) (-)-epicatechin (EC) significantly lower....

LLC resonant converter has been used widely in DC-DC converters for constant output voltage with high efficiency. However, most of the design methods based on fundamental harmonic approximation (FHA) can't be charging Li-Ion batteries as charger is wide. In this paper, an optimal method developed. The objective maximizing magnetizing inductance. relationship between operation range and circuit parameters revealed frequency response converter. Maximum conversion efficiency achieved under...

By integrating renewable energy sources (RESs) with electric vehicles (EVs) in microgrids, we are able to reduce carbon emissions as well alleviate the dependence on fossil fuels. In order improve economy of an integrated system and fully exploit potentiality EVs’ mobile storage while achieving a reasonable configuration RESs, cooperative optimization method is proposed cooperatively optimize economic dispatching capacity allocation both RESs EVs context regional multi-microgrid system. An...

Three-phase three-level Vienna rectifier using powder core inductors has been widely used for power conversion. Inductor current ripple analysis of is essential pulsewidth modulation method optimization, loss estimation, filter inductor design, etc. However, it hard to analyze the rectifier. Moreover, inductance varies with sinusoidal input current, which makes even more complicated. In this article, a three-phase considering variation presented. The distribution constant studied based on...