Storage battery

Xem 1-20 trên 29 kết quả Storage battery
  • This chapter aims at providing an overview of products and systems using batteries. Here, the term product indicates any device – small or large, portable or not – powered by a battery. The term system indicates a large installation, such as an energy storage plant to back up an electricity grid, or an extended sensor network.

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  • Electrical energy plays an important role in our daily life. It can universally be applied and easily be converted into light, heat or mechanical energy. A general problem, however, is that electrical energy can hardly be stored. Capacitors allow its direct storage, but the quantities are small, compared to the demand of most applications. In general, the storage of electrical energy requires its conversion into another form of energy.

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  • Today the most important electrochemical storage systems for stationary applications are the lead-acid and the nickel/cadmium systems. Both of them have advantages and disadvantages which carefully have to be considered for best selection. Batteries for telecom applications are specially designed for long service life and hours of discharging time. Batteries for UPS applications are designed for discharges with high current over short times (minutes). Special battery constructions are offered for the different requirements. ...

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  • To transport people and material growing transportation systems are needed. More and more of the energy for these systems is drawn from secondary batteries. The reason for this trend is economic, but there is also an environmental need for a future chance for electric traction. The actual development of electrochemical storage systems with components like sodium–sulfur, sodium–nickel chloride, nickel–metal hydride, zinc–bromine, zinc–air, and others, mainly intended for electric road vehicles, make the classical lead-acid traction batteries look old-fashioned and outdated....

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  • Electric two-wheelers (E2Ws) are a category of vehicles in China that includes two-wheel bikes propelled by human pedaling supplemented by electrical power from a storage battery (bicycle-style E2Ws or pedelecs), and low-speed scooters propelled almost solely by electricity (scooter-style E2Ws). Besides pedelecs, most E2Ws rely exclusively on electric power, not on human pedaling. In many countries, E2Ws are allowed to operate in the bicycle lane and are considered a bicycle from a regulatory perspective (i.e., helmets and driver’s licenses are not required).

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  • The oxide reduction diffusion (ORD) procedure has recently been applied in synthesizing hydrogen storage materials AB5 for Ni-MH batteries. Starting from metal hydroxides and La oxalat precursor, superfine powder alloys LaNi5, LaNi4.5Co0.5 and LaNi3.87Mn1.13 were obtained by this “soft-chemistry” route. Chemical composition, structure and morphology of alloy phases were examined by different analysis techniques such as AAS, EPMA, X-ray and TEM. The H2-absorption and desorption behavior of crystalline products was determined by Sieverts’ method.

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  • Since the penetration level of Photovoltaic (PV) system continuously increases, the negative impact caused by the fluctuation of PV power output needs to to be carefully managed. This paper proposes a coordinated control algorithm based on a discrete wavelet transform to eliminate both short-term and long-term fluctuations by using hybrid energy storage system (HESS). While the short-term fluctuation is mitigated by using an electric double-layer capacitor (EDLC), the longterm one is reduced by the support of a Li-ion battery.

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  • The purpose of the thesis: Understanding and building manufacturing technology for positive material, which has the ability to exchange and storage of Li+ , Na+ on manganese oxide substrate. Investigating the variation of electrical and electrochemical properties of material systems dependent on technological factors. Therefore, determining the suitable technology for making conductor material and charge/discharge Li+ , Na+ ion with high capacity, energy density, and structural stability.

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  • In this research, the optimal battery size for stand-alone PV system is determined using ANN model. Thus, calculation of optimum battery storage for a stand-alone PV system can be automated without needing extensive mathematical calculations or graphical analysis techniques.

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  • One of the most recent optimization techniques applied to the optimal design of photovoltaic system to supply an isolated load demand is the Artificial Bee Colony Algorithm (ABC). The proposed methodology is applied to optimize the cost of the PV system including photovoltaic, a battery bank, a battery charger controller, and inverter. Two objective functions are proposed: the first one is the PV module output power which is to be maximized and the second one is the life cycle cost (LCC) which is to be minimized.

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  • SnS2 has been investigated as anode material for lithium ion batteries. To obtain anode material having high capacity and long-term lifespan, in the present work, a nanostructured composite comprising SnS2 nanosheets and CMK-3 ordered mesoporous carbon has been designed. The CMK-3/SnS2 composite is fabricated via incipient wetness impregnation, followed by chemical reduction and chemical conversion in an inert gas at high temperature. The obtained composite exhibits boosted lithium storage behaviors involving high specific capacity, fast rate response and stable cyclability.

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  • The discrete time control of a three phase 4 wire PWM inverter with variable DC link voltage for simultaneously supply of three phase and single phase load in transformerless stand alone photovoltaic application with battery energy storage (BES) and LC output filter is described.

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  • Vehicles that utilize more than one energy source for propulsion are usually termed hybrid vehicles. Although the onboard energy storage system (ESS) may be a flywheel or a hydraulic accumulator, most hybrid vehicles use chemical batteries or capacitors and are termed hybrid-electric vehicles. Fuel cells (FCs) may be used in hybrid-electric vehicles as primary power sources instead of conventional internal combustion engines (ICEs). In this article, ICE–battery hybrid transit buses are discussed specifically and contrasted with conventional drive buses. ...

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  • The NS2 is a two reader panel providing access control for up to two doors through the use of Wiegand readers. The NS2 may be used as a standalone panel with independent card and transaction storage or, with a software upgrade, as a fully monitored online access control device. Communication to the front-end computer is achieved through an RS-232 serial cable (included with installation kit) or an optional RS-485 interface. Each RS-485 interface is capable of communicating with up to 31 panels. The NS2 is designed for tile mount using the ENC10 enclosure.

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  • The Zoning Resolution’s off-street parking regulations were written before car sharing existed. Therefore, the zoning text currently addresses only private automobiles and car rental establishments, the latter of which are commercial uses. In addition, the definitions of “public parking lot” and “public parking garage” generally prohibit the storage of commercial vehicles in such facilities. However, car sharing is a use that is more appropriately characterized as somewhere between private automobile and traditional car rental. ...

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  • This study will calculate, design, and fabricate the inertial energy recovery model of the vehicle during braking or deceleration. This energy recovery unit is applicable to conventional vehicles, including a double planetary gear set is added in parallel with the propeller shaft; a generator is coaxial with the flywheel to convert the mechanical energy into electricity to recharge for battery.

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  • This is achieved by generating electricity from a single or multiple number of solar panels connected with a charge controller, a battery bank for storage and an inverter circuit to supply electrical power. Depending on the electrical load demand and the applications coverage area, the solar tree rating and specification can be a single-phase or three-phase AC output.

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  • In this article, a brief overview of manganese oxide nanomaterials (NMs) potential towards oxygen reduction reaction (ORR) for microbial fuel cell (MFC), bioremediations, and battery applications is discussed. It's known that using non-renewable fossil fuels as a direct energy source causes greenhouse gas emissions.

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  • Magnesium ion conducting biopolymer electrolytes have been prepared using cellulose acetate and different wt of magnesium perchlorate with DMF as a solvent by the solution casting technique. Asprepared membranes were subjected to different characterization techniques such as XRD, FTIR, DSC, ac impedance analysis and transference number measurement.

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  • No internal timer, battery. No keyboard, display, network interface. Current generation: μ-processor: 16-bits, 10MHz. RAM: 4K. ROM: 100K for code storage. E2PROM (105 updates ): 64K for data storage. I/O: serial (9600 bps), Contactless protocols: MiFare, FeliCa, Calypso.

    ppt12p nggianglx 07-12-2010 86 15   Download



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