0901014
... high power level. Additionally, the components, such as a very fast processor, a high speed analogue to digital converter, and also a high speed switching device, all of which are required for the implementation, will increase the system costs. ...
... high power level. Additionally, the components, such as a very fast processor, a high speed analogue to digital converter, and also a high speed switching device, all of which are required for the implementation, will increase the system costs. ...
rtfx harmonic problems in capacitor banks
... HARMONIC PROBLEMS IN CAPACITOR BANKS For elimination of harmonics of the electrical network, we offer: ...
... HARMONIC PROBLEMS IN CAPACITOR BANKS For elimination of harmonics of the electrical network, we offer: ...
auto transformer
... This power fraction is referred as to throughput power (or the auto fraction, which is equivalent to the rated power of the auto-transformer). Then, P1 primary power by the supply network must be equal to P2 (according to the law of conservation). The primary power P1 produces a load current I1 in ...
... This power fraction is referred as to throughput power (or the auto fraction, which is equivalent to the rated power of the auto-transformer). Then, P1 primary power by the supply network must be equal to P2 (according to the law of conservation). The primary power P1 produces a load current I1 in ...
CHAPTER 4 – AC Machinery Fundamentals
... Before we have looked at how if two magnetic fields are present in a machine, then a torque will be created which will tend to line up the two magnetic fields. If one magnetic field is produced by the stator of an ac machine and the other by the rotor, then a torque will be induced in the rotor whic ...
... Before we have looked at how if two magnetic fields are present in a machine, then a torque will be created which will tend to line up the two magnetic fields. If one magnetic field is produced by the stator of an ac machine and the other by the rotor, then a torque will be induced in the rotor whic ...
Questionnaire for Installers on Transformers constraints and limitations
... In case a specific application is missing, feel free to add additional letters to the list above (2) If different values of apparent power are assigned under different cooling methods, please indicate the highest of these values, which is the rated power (3) As defined in EN 60076-1, paragraph 7. In ...
... In case a specific application is missing, feel free to add additional letters to the list above (2) If different values of apparent power are assigned under different cooling methods, please indicate the highest of these values, which is the rated power (3) As defined in EN 60076-1, paragraph 7. In ...
Design of a Power Distribution System
... systems. But before we describe those guidelines, it is important to note a few basic facts about electric distribution systems in general. First, the distribution engineer is concerned with delivering electricity from electrical substations to the customer, not from the power generating plants. Thi ...
... systems. But before we describe those guidelines, it is important to note a few basic facts about electric distribution systems in general. First, the distribution engineer is concerned with delivering electricity from electrical substations to the customer, not from the power generating plants. Thi ...
Resonant inductive coupling
Resonant inductive coupling or electrodynamic induction is the near field wireless transmission of electrical energy between two magnetically coupled coils that are part of resonant circuits tuned to resonate at the same frequency. This process occurs in a resonant transformer, an electrical component which consists of two high Q coils wound on the same core with capacitors connected across the windings to make two coupled LC circuits. Resonant transformers are widely used in radio circuits as bandpass filters, and in switching power supplies. Resonant inductive coupling is also being used in wireless power systems. Here the two LC circuits are in different devices; a transmitter coil in one device transmits electric power across an intervening space to a resonant receiver coil in another device. This technology is being developed for powering and charging portable devices such as cellphones and tablet computers at a distance, without being tethered to an outlet.Resonant transfer works by making a coil ring with an oscillating current. This generates an oscillating magnetic field. Because the coil is highly resonant, any energy placed in the coil dies away relatively slowly over very many cycles; but if a second coil is brought near it, the coil can pick up most of the energy before it is lost, even if it is some distance away. The fields used are predominately non-radiative, near fields (sometimes called evanescent waves), as all hardware is kept well within the 1/4 wavelength distance they radiate little energy from the transmitter to infinity.One of the applications of the resonant transformer is for the CCFL inverter. Another application of the resonant transformer is to couple between stages of a superheterodyne receiver, where the selectivity of the receiver is provided by tuned transformers in the intermediate-frequency amplifiers. The Tesla coil is a resonant transformer circuit used to generate very high voltages, and is able to provide much higher current than high voltage electrostatic machines such as the Van de Graaff generator. Resonant energy transfer is the operating principle behind proposed short range (up to 2 metre) wireless electricity systems such as WiTricity or Rezence and systems that have already been deployed, such as Qi power transfer, passive RFID tags and contactless smart cards.