Power calculations

In the paper, 3L-MPC algorithm with fast calculation is proposed to control many objectives such as unit power factor, capacitor voltage balance and switching frequency reduction. In addition, the outer PI controller is used to adjust the DC-bus voltage. The simulation results demonstrated the excellent performance of the proposed method, both in transient and steady states.

8p viyoko 01-10-2024 2 2   Download

This paper proposes a method to identify the optimal operating point fora photovoltaic power system. With theinformation on the power's solar irradiance, the temperature at P-N junction, and the generated power limit, an algorithm is proposed to calculate points on the voltage-power curve based on an utterly mathematical model of the generation, iterative,and bisectional techniques.

5p viyoko 01-10-2024 1 1   Download

This article analyzes and evaluates the impact of the Yen Dinh solar power plant in Thanh Hoa, Vietnam when connected to the 22kV power grid such as: reverse power flow, overvoltage, influence of harmonics, changes operational methods for placing economic capacitors and coordinating protection when the plant is connected to the distribution grid are also calculated and analyzed.

8p viyoko 01-10-2024 3 1   Download

The study evaluated the results of IOL power calculation using Shammas PL no history formula in eyes with previous laser in situ keratomileusis (LASIK). This was a longitudinal follow-up descriptive analysis study. IOL power was calculated with Shammas PL formula with the ASCRS online calculator.

9p vinatisu 23-08-2024 1 1   Download

This paper proposes a solution to the power grid system's reactive power optimization scheduling problem (RPSP) based on a novel Manta ray forging algorithm (MRFO) evolutionary algorithm. By applying the penalty function for the reactive power optimization model, the management of the constraints of the RPSP optimization formula is counting on for calculation.

10p linyanjun_2408 21-04-2022 16 1   Download

To study the scientific basis to build the optimal calculation model of electricity sales for the system of staged reservoirs under competitive power generation conditions in order to provide operational instructions in combination with the coordination chart deliver the full annual output contract and drive to the largest revenue.

27p hobbsandshaw 09-06-2021 16 4   Download

his paper presents a method for all-digital background calibration of multiple channel mismatches including offset, gain and timing mismatches in time-interleaved analog-to-digital converters (TIADCs). The average technique is used to remove offset mismatch at each channel.

11p tamynhan6 14-09-2020 16 4   Download

Proposed solutions to improve the calculation speed for total transmit power minimum problem in multi-antenna wireless transmission network by using optimization techniques.

27p gaocaolon6 30-07-2020 41 3   Download

Models representing uncertainty factors; data mining techniques; calculation methods of power systems taking into account uncertainty factors.

31p gaocaolon6 30-07-2020 21 2   Download

The main objective of this review is to show the reader the importance of the proper choice of an aero profile and its influence for the calculation during the design of rotor blades and the performance of hydrokinetic turbines.

12p lucastanguyen 01-06-2020 13 1   Download

The paper presents the study of high harmonics influence on power metering by static meters for active and reactive energy. The review and analysis of manufacturer’s documents and standards in the field of electricity meters testing was conducted and mathematical models for calculating active and reactive energy were identified.

6p lucastanguyen 01-06-2020 12 1   Download

We have investigated the thermodynamic properties of the cubic zirconia ZrO2 using the statistical moment method in the statistical physics. The free energy, thermal lattice expansion coefficient, specific heats at the constant volume and those at the constant pressure, CV and CP , are derived in closed analytic forms in terms of the power moments of the atomic displacements.

16p 12120609 01-06-2020 9 1   Download

The set of intracavity field equations describing the evolution of intra-cavity pumping, Stokes and anti-Stokes powers of Raman laser is presented. Most attention is given to intra-cavity competition of two Raman waves, which depends on cavity properties, frequency shift and phase mismatch. The calculated results are based on Ge-doped and D2-gas-in glass fiber lasers at CW-regime and pulse-pumped regime.

8p 12120609 01-06-2020 12 1   Download

In the field of severe accident, the description of corium progression events is mainly carried out by using integral calculation codes. However, these tools are usually based on bounding assumptions because of high complexity of phenomena.

8p christabelhuynh 31-05-2020 10 1   Download

The goal of this study is to look after the amount of information that is mandatory to get a relevant parameters optimisation by data assimilation for physical models in neutronic diffusion calculations, and to determine what is the best information to reach the optimum of accuracy at the cheapest cost.

8p christabelhuynh 31-05-2020 17 2   Download

The purpose of this paper is to model the operation of the Shutdown Cooling System (SDCS) for CANDU 6 nuclear power plants in case of LOCA accidents, using Flowmaster calculation code, by delimiting models and setting calculation assumptions, input data for hydraulic analysis and input data for calculating thermal performance check for heat exchangers that are part of this system.

7p christabelhuynh 31-05-2020 17 1   Download

Evaluating the neutronic state (neutron flux, power . . . ) of the whole nuclear core is a very important topic that has strong implication for nuclear core management and for security monitoring. The core state is evaluated using measurements and calculations.

9p christabelhuynh 31-05-2020 17 1   Download

In this study, we use MIXOPTIM, a Monte-Carlo simulator of the behavior of a mix of power sources on a territory, to evaluate the performance of the present EU power mix. After a validation on the French mix, we applied it to the whole EU territory and made variational calculations around the present mix to evaluate the performance impacts induced by small changes in installed renewable power and nuclear power.

5p christabelhuynh 30-05-2020 5 0   Download

A correlated sampling technique has been implemented to estimate the impact of cross section modifications on the neutron transport and in Monte Carlo simulations in one single calculation. This implementation has been coupled to a Total Monte Carlo approach which consists in propagating nuclear data uncertainties with random cross section files.

9p christabelhuynh 29-05-2020 7 2   Download

Deterministic uncertainty propagation methods are certainly powerful and time-sparing but their access to uncertainties related to the power map remains difficult due to a lack of numerical convergence. On the contrary, stochastic methods do not face such an issue and they enable a more rigorous access to uncertainty related to the PFNS.

5p christabelhuynh 29-05-2020 8 1   Download