Power loss

Xem 1-20 trên 77 kết quả Power loss
  • In this paper a new hybrid optimization algorithm, referred to as Crossbreed spiral dynamics bacterial chemotaxis algorithm (CSDBCA) is proposed to solve the optimal reactive power dispatch (ORPD) Problem. CSDBCA synergizes bacterial foraging algorithm (BFA) chemotaxis approach and spiral dynamics algorithm (SDA)

    pdf4p praishy2 27-02-2019 8 0   Download

  • The aim of this paper is based on a subproblem technique with the magnetic vector potential formulation to compute magnetic fields, eddy currents and Joule power losses in electromagnetic screens that are extreamly difficult to perform by a finite element method.

    pdf6p vimessi2711 02-04-2019 11 0   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Synthesis of Bio-Compatible SPION–based Aqueous Ferrofluids and Evaluation of RadioFrequency Power Loss for Magnetic Hyperthermia

    pdf6p dauphong14 11-02-2012 40 3   Download

  • This paper proposes a chaotic biogeography based optimization (CBBO) for solving optimal reactive power dispatch (ORPD) problem. Based on biogeography based optimization (BBO) theory proposed by Dan Simon in 2008.

    pdf10p sansan2 26-05-2018 13 1   Download

  • This paper investigates a Distributed Generators (DG) connected to distribution networks offering multiple benefits for grids and environments in the case of renewable sources used. Nevertheless, this task requires an appropriate planning and control strategy, if not several drawbacks can issue, including voltage rise problems and increased power losses. To overcome such disadvantages, this paper proposes a coordinated voltage control CVC method for distribution networks with multiple distributed generators.

    pdf14p thuyliebe 05-10-2018 16 1   Download

  • Pb–Ca foil laminated on rolled sheet for positive grid of lead-acid battery is proposed to prevent premature capacity loss (PCL) during charge–discharge cycling. Batteries with Pb–Ca foil laminated on positive grid had longer life during charge–discharge cycle than conventional battery, which failed early by PCL. PCL is a phenomenon due to the increase of the interfacial resistance between the positive grid and the positive active mass (PAM) during discharging by PbSO4 formation in the corrosion layer....

    pdf9p congdat261 19-11-2010 48 7   Download

  • When I started practicing medicine twenty-five years ago, I followed the party line. I recommended calorie counting and low-fat diets for weight loss and was usually disappointed by the results. People just kept gaining weight. Then, in the 1990s, some of my patients started ignoring warnings about fat and cholesterol and going on low-carb diets. The results were astonishing. Folks who had been unsuccessful at losing weight for years started shedding pounds more easily than they thought possible even as they ate generous amounts of rich food.

    pdf242p cronus75 13-01-2013 53 4   Download

  • Wireless Communications Principles and Practice - Chapter 4: Mobile Radio Propagation Large-Scale Path Loss Introduction, Electromagnetic Spectrum, Electromagnetic Waves; Speed, Wavelength, Frequency; Electric and Magnetic Fields.

    pdf38p maiyeumaiyeu25 16-12-2016 28 4   Download

  • Spinal Cord (See also Chap. 372) If the spinal cord is transected, all sensation is lost below the level of transection. Bladder and bowel function are also lost, as is motor function. Hemisection of the spinal cord produces the Brown-Séquard syndrome, with absent pain and temperature sensation contralaterally and loss of proprioceptive sensation and power ipsilaterally below the lesion (see Figs. 25-1 and 372-1). Numbness or paresthesias in both feet may arise from a spinal cord lesion; this is especially likely when the upper level of the sensory loss extends to the trunk.

    pdf5p ongxaemnumber1 29-11-2010 57 3   Download

  • In Design of high density transformers for high frequency high power converters, the abovementioned issues of high-frequency transformers are explored, particularly in regards to high-power converter applications. Loss calculations accommodating resonant operating waveform and Litz wire windings are explored. Leakage inductance modeling for large-number-of-stand Litz wire windings is proposed. The optimal design procedure based on the models is developed.

    pdf175p khoaicuto 19-03-2015 32 3   Download

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  • Magnetic nanoparticles absorb energy from external alternating magnetic field to create a nanosized heating source. Specific loss power (SLP) is affected strongly by several magnetic parameters of material and viscosity of nanofluid. In this study, the specific loss power as dependent on saturation magnetization was calculated for hard ferrite CoFe2O4 (K = 290 kJ/m3 ) and soft ferrite MnFe2O4 (K = 3 kJ/m3 ) with two values of viscosity in biological range 1-2 mPas.

    pdf9p cumeo3000 01-08-2018 11 0   Download

  • This paper compares the DC optimal power flow (DCOPF) model and AC optimal power flow (ACOPF) that are used to calculate LMP in the wholesale electricity market. The study takes into account the price-sensitive loads and active power reserves. DCOPF model has 2 forms: DCOPF without losses and iterative DCOPF with losses.

    pdf6p trangcham1896 10-12-2018 17 0   Download

  • This paper presents multi-period linearized optimal power flow (MPLOPF) with the consideration of transmission network losses and Thyristor Controlled Series Compensators. The transmission losses are represented using piecewise linear approximation based on line flows. In addition, the nonlinearity due to the impedance variation of transmission line with TCSC is linearized deploying the big-M based complementary constraints.

    pdf6p vidanh95 12-12-2018 16 0   Download

  • This paper deals with break size estimation of loss of coolant accidents (LOCA) using a nonlinear autoregressive with exogenous inputs (NARX) neural network. Previous studies used static approaches, requiring time-integrated parameters and independent firing algorithms.

    pdf7p minhxaminhyeu3 12-06-2019 1 0   Download

  • The management of hydrogen safety and prevention of overpressurization could be implemented through a hydrogen reduction system and spray system. During the course of the hypothetical large break loss-of-coolant accident in a nuclear power plant, hydrogen is generated by a reaction between steam and the fuel-cladding inside the reactor pressure vessel and also core concrete interaction after ejection of melt into the cavity.

    pdf10p minhxaminhyeu5 30-06-2019 8 0   Download

  • In this Smart Grid network, a Smart Grid node can receive and send data to Smart Grid centre through a Smart Grid network gateway. Hardware analysis and design of a Smart Grid node and Smart Grid network gateway are proposed with a goal of low cost and efficient energy consumption. Through a practical test of received signal strength measurement in an urban environment, the reliability of data communications of this Smart Grid wireless device has been proved. And finally, by using NS-2 simulation, packet loss and network delay time for different network topologies are evaluated.

    pdf10p minhxaminhyeu4 15-07-2019 5 0   Download

  • Important notice Many practical techniques described in this book involve potentially dangerous applications of electricity and engineering equipment. The authors, editors and publishers cannot take responsibility for any personal, professional or financial risk involved in carrying out these techniques, or any resulting injury, accident or loss. The techniques described in this book should only be implemented by professional and fully qualified electrical engineers using their own professional judgement and due regard to health and safety issues....

    pdf1498p nguyenthai_thinh 16-03-2013 80 32   Download

  • Electrical machines are almost entirely used in producing electricity, and there are very few electricity-producing processes where rotating machines are not used. In such processes, at least auxiliary motors are usually needed. In distributed energy systems, new machine types play a considerable role: for instance, the era of permanent magnet machines has now commenced. About half of all electricity produced globally is used in electric motors, and the share of accurately controlled motor drives applications is increasing.

    pdf531p nguyenthai_thinh 21-03-2013 67 25   Download



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