摘要:
The present invention relates to a 12th active filter capable of concurrently removing 11th and 13th harmonics in order to obtain a filter performance capable of removing 11th and 13 harmonics even when a filter capable of removing 11th and 13th harmonics is constituted using a compensation function. The 12th active filter capable of concurrently removing 11th and 13th harmonics is characterized in that a passive filter 7-1 formed of a condenser 7-1-1, an inductance 7-1-2 and a resistor 7-1-3 is formed of the phases A, B and C, and the passive filter 7-1 of each phase is formed in a three-phase structure in which a switch 7-3 and a voltage source converter 7-4 are connected through a transformer 7-2, and in the voltage source converter 7-4, V1˜V6 of a firing unit 7-7 are connected with the bases of the transistors of semiconductor devices V1˜V6, respectively, and a control unit 7-6 connected with a signal detection unit 7-5 is connected with the firing unit 7-7 for thereby removing 11th and 13th harmonics.
摘要:
A leakage current measurement apparatus for measuring leakage currents is disclosed. The leakage current measurement apparatus automatically selects one of non-inductive shunt resistors of 10Ω, 100Ω, and 1000Ω and measures leakage currents of an outdoor isolation material for an ultra-high voltage. Additionally, the leakage current measurement apparatus is capable of measuring a relatively wide range of leakage currents with a relatively high precision, even at a remote location, as a measurement range is automatically adjusted within measurement ranges preset by a user when leakage currents of an outdoor isolation material change, and being protected against a surge possibly generated by an ultra-high voltage. Also, it can remotely measure in real-time leakage currents of an outdoor isolation material installed at a remote location over Ethernet.
摘要:
An electronic apparatus, a computer program product and a method of displaying an item using the same are provided. The electronic apparatus includes a memory for storing an item list having at least one item, a display for displaying at least one object capable of fluidly moving and corresponding to the at least one item respectively and a controller for controlling the display to change a fluid movement of a specific object corresponding to a specific item when an event related to the specific item among the at least one item occurs.
摘要:
An electronic apparatus, a computer program product and a method of displaying an item using the same are provided. The electronic apparatus includes a memory for storing an item list having at least one item, a display for displaying at least one object capable of fluidly moving and corresponding to the at least one item respectively and a controller for controlling the display to change a fluid movement of a specific object corresponding to a specific item when an event related to the specific item among the at least one item occurs.
摘要:
A method of processing program guide information is provided. The method includes receiving one or more program guide informations contained in service information of a stream provided by a digital television broadcasting system, comparing the received program guide informations with one another, and updating one of the program guide informations to another one of the program guide informations.
摘要:
Disclosed is a lithium secondary battery comprising a cathode, an anode, an electrolyte and a separator, wherein the anode comprises an anode active material having a specific surface area of 3 m2/g or less, and the electrolyte comprises 0.1˜6 parts by weight of a propane sultone-based compound based on 100 parts by weight of the electrolyte. The lithium secondary battery solves the problem of performance degradation caused by the use of an increased amount of a propane sultone-based compound required to form a SEI film on the surface of an anode upon the first charge cycle. Also, the lithium secondary battery can provide improved cycle characteristics and high-temperature storage characteristics.
摘要:
The present invention relates to a multilayer polymer latex comprising a seed, a rubbery core surrounding the seed, and a shell surrounding the rubbery core, in which the seed comprises a vinyl unit, a hydrophilic unit and a crosslinker unit, as well as a preparation method thereof. The present invention can provide an acrylic polymer latex and a diene polymer latex, depending on materials constituting the core and the shell. In the present invention, the seed containing a vinyl unit, a hydrophilic unit and a crosslinker unit, and the rubbery core, are used for the preparation of the polymer latex. This can increase the rubber content of the polymer latex, thus improving the impact resistance of the polymer latex, and at the same time, reduce the viscosity of the polymer latex so as to improve the long-term workability of the polymer latex upon spray drying. Thus, polymer powder prepared from the polymer latex is excellent in not only impact resistance but also flow properties.
摘要:
A particle rendering method and system that can receive a selection of a shape and/or a motion of a particle or a selection or a correction of a predetermined particle pattern, and generate a particle corresponding to the selection thereby generating a particle that has the desired shape and motion. Furthermore, the method and system can render a large number of particles in real time by sorting a plurality of particles using a render group. The particle rendering system includes a receiving module to receive a selection on a shape or a motion of a particle, and a first particle generation unit to generate a first particle corresponding to the shape or the motion by calling information corresponding to the shape selection from a shape information module or information corresponding to the motion selection from a motion information module.
摘要:
An apparatus and method for manufacturing ultra-fine particles using an electrospray device is disclosed. One or more capillary provided at its tip with a nozzle is positioned within a guide duct and precursors such as metal organic materials and metal halogen compounds, or nonvolatile substances or volatile substances are supplied to the capillary. Voltages are applied to the capillary and the guide duct, respectively, so that a voltage difference is generated therebetween and the highly charged liquid droplets from the capillary are sprayed. The sprayed liquid droplets are carried along the guide duct together with carrier gas injected into the guide duct. When heat energy is applied to the liquid droplets, chemical reactions of the liquid droplets occur. A collecting plate positioned in front of the guide duct collects ultra-fine particles formed by the chemical reactions.