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Flywheel energy storage

Flywheel energy storage
Flywheel energy storage (FES) works by accelerating a rotor (flywheel) to a very high speed and maintaining the energy in the system as rotational energy. When energy is extracted from the system, the flywheel's rotational speed is reduced as a consequence of the principle of conservation of energy; adding energy to the system correspondingly results in an increase in the speed of the flywheel. Most FES systems use electricity to accelerate and decelerate the flywheel, but devices that directly use mechanical energy are being developed.[1] Since FES can be used to absorb or release electrical energy such devices may sometimes be incorrectly and confusingly described as either mechanical or inertia batteries [2][3] Main components[edit] The main components of a typical flywheel. A typical system consists of a rotor suspended by bearings inside a vacuum chamber to reduce friction, connected to a combination electric motor and electric generator. Physical characteristics[edit] General[edit] .

Flywheel electricity generator Abstract: A flywheel (magnet rotors or stators) assembly to create electricity, by attaching motor to provide kinetic energy to magnet rotors or stators, so magnet rotors or stators can run on principal of flywheel to create electricity by magnet rotors rotating like flywheel on two sides of stator, and stator rotating like flywheel in-between magnet rotors. Claims: 1. 2. 3. 4. 5. 6. Description: [0001]1. [0002]The invention presented here is related to the generation of electricity. [0003]2. [0004]The price of crude oil going over $125 a barrel and other fuels, such as coal, which causes global climate changes makes the current method unbefitting for the environment and human. [0005]In this invention concept of flywheel is use. [0006]The concept of flywheel (magnet rotors or stator) power generator is the same as that of wind power turbine generator. [0007]The present invention is to provide a new way of generating power using flywheel (magnet rotors or stator).

VYCON - Flywheel Technology Flywheels have been used since the Bronze Age as a way to store kinetic energy. Today, with new high speed motor technology, VYCON has developed highly efficient flywheel systems which provide consistent, dependable energy for a variety of important applications. VYCON's flywheel-based energy storage systems hold kinetic energy in a spinning mass, and convert this energy to electric power through the use of a high speed electric motor/generator. Advanced flywheel systems from VYCON originated from its parent company Calnetix, the leader in high speed permanent magnet motors and generators, magnetic bearings, power electronics and system integration. Main components of the VYCON flywheel -- a high-speed permanent magnet motor/generator, fully active magnetic bearings, and the rotor assembly construction -- constitute a unique synthesis of proprietary technologies: High Speed Permanent Magnet Motor/Generator. System Management. Inside look at the VDC Unit for Power Quality Applications

Pumped-storage hydroelectricity - Wikipedia, the free encycloped Pumped storage is the largest-capacity form of grid energy storage available, and, as of March 2012, the Electric Power Research Institute (EPRI) reports that PSH accounts for more than 99% of bulk storage capacity worldwide, representing around 127,000 MW.[1] PSH reported energy efficiency varies in practice between 70% and 80%,[1][2][3][4] with some claiming up to 87%.[5] Overview[edit] Power distribution, over a day, of a pumped-storage hydroelectricity facility. At times of low electrical demand, excess generation capacity is used to pump water into the higher reservoir. The relatively low energy density of pumped storage systems requires either a very large body of water or a large variation in height. Along with energy management, pumped storage systems help control electrical network frequency and provide reserve generation. The upper reservoir (Llyn Stwlan) and dam of the Ffestiniog Pumped Storage Scheme in north Wales. Worldwide use[edit] Potential technologies[edit]

Flywheels: How do they work and what do they do? by Chris Woodford . Last updated: January 10, 2012. S top... start... stop... start—it's no way to drive! Every time you slow down or stop a vehicle or machine, you waste the momentum it's built up beforehand, turning its kinetic energy (energy of movement) into heat energy in the brakes . Wouldn't it be better if you could somehow store that energy when you stopped and get it back again the next time you started up? Photo: A modern flywheel developed by NASA for use in space. Why we need flywheels Engines are happiest and at their most efficient when they're producing power at a constant, relatively high speed. What is a flywheel? A flywheel is essentially a very heavy wheel that takes a lot of force to spin around. Flywheels come in all shapes and sizes. Modern flywheels are a bit different from the ones that were popular during the Industrial Revolution. Photo: A typical flywheel on a gas-pumping engine. The physics of flywheels E = ½mv 2 E = ½Iω 2 Conservation laws Ancient flywheels

CETO - wave energy for electricity production and desalination of seawater Superconducting magnetic energy storage - Wikipedia, the free en Superconducting Magnetic Energy Storage (SMES) systems store energy in the magnetic field created by the flow of direct current in a superconducting coil which has been cryogenically cooled to a temperature below its superconducting critical temperature. A typical SMES system includes three parts: superconducting coil, power conditioning system and cryogenically cooled refrigerator. Once the superconducting coil is charged, the current will not decay and the magnetic energy can be stored indefinitely. Due to the energy requirements of refrigeration and the high cost of superconducting wire, SMES is currently used for short duration energy storage. Therefore, SMES is most commonly devoted to improving power quality. Advantages over other energy storage methods[edit] Current use[edit] There are several small SMES units available for commercial use and several larger test bed projects. These facilities have also been used to provide grid stability in distribution systems. Where Cost[edit]

飞轮UPS——UPS中的“机械表”_数据中心专区_|><|太平洋电脑网PConline 或许没有人知道,UPS电源的鼻祖就是一套飞轮装置。然而,由于其体积过大,运行不够稳定等因素,逐步被铅蓄电池UPS所取代。如今,飞轮UPS又卷土重来,开始在各个领域崭露头角。那么,飞轮UPS与传统电源相比,到底有何不同? 以目前市场上最为流行的飞轮UPS为例,它由美国ACTIVEPOWER公司生产制造。 首先,飞轮UPS的效率非常高,可达98%。 第二,飞轮ups更加安全可靠。 对于化学储能来说则完全不同,它靠电子从阴极到阳极产生电能,但是这个过程不可见也不可测,用设备测量时可能有电压,但是真正去放电的时候未必能提供这么多的能量。 第三,飞轮UPS对环境的依赖程度很低,不需要空调制冷,它的工作温度在0度到40度之间,对于数据中心来说是非常大的节省。 第四,飞轮UPS对占地的要求大大减少。 第五,就是飞轮UPS的绿色环保。 当然与手表类似,这种机械表比石英表价格略高。

Hydrogen storage Utility scale underground liquid hydrogen storage Methods of hydrogen storage for subsequent use span many approaches, including high pressures, cryogenics, and chemical compounds that reversibly release H2 upon heating. Underground hydrogen storage is useful to provide grid energy storage for intermittent energy sources, like wind power, as well as providing fuel for transportation, particularly for ships and airplanes. Most research into hydrogen storage is focused on storing hydrogen as a lightweight, compact energy carrier for mobile applications. Liquid hydrogen or slush hydrogen may be used, as in the Space Shuttle. However liquid hydrogen requires cryogenic storage and boils around 20.268 K (−252.882 °C or −423.188 °F). Compressed hydrogen, by comparison, is stored quite differently. Onboard hydrogen storage[edit] Targets were set by the FreedomCAR Partnership in January 2002 between the United States Council for Automotive Research (USCAR) and U.S. Established technologies[edit]

全面揭秘ActivePower飞轮UPS生产过程_数据中心专区_|><|太平洋电脑网PConline 【PConline资讯】飞轮UPS开始在我国大规模应用,其未来的前景广被看好。目前,应用最为成熟最为广泛的是来自于美国ActivePower的飞轮UPS。 飞轮UPS工作的原理非常简单,一个重达600磅的铁制飞轮以每分钟7700转的速度高速旋转,将能量以动能的形式储存起来。需要能量时,飞轮减速运行,将存储的能量释放出来,从而保证负载的正常运行。 清华大学自80年代起便开始研究飞轮技术,然而,据北京航空航天大学教授房建成“目前,我国的飞轮储能技术还停留在实验室研究阶段,与国外技术水平差距在10年以上。”为何看上去非常简单的技术,却包含这么多玄机呢? 飞轮生产车间 ActivePower有8万平方米的工厂,内装2条装配线,8条生产线。 在生产过程中,有详细的工作指令和清单用于整个工厂。 工厂中完成四个主要任务:1.生产四个关键的飞轮部件,2.装备飞轮,3.制造环绕飞轮的电力柜,4.测试系统。 相关文章:

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