performance of three phase induction motor using modified stator
... electric power system includes an opposing current in the secondary winding, when the latter is short circuited or closed through external impedance. Relative motion between the primary and secondary structure is produced by electromagnetic forces corresponding to the power transferred across the ai ...
... electric power system includes an opposing current in the secondary winding, when the latter is short circuited or closed through external impedance. Relative motion between the primary and secondary structure is produced by electromagnetic forces corresponding to the power transferred across the ai ...
The design of Ruthroff broadband voltage - MARTIN
... Notice how the low permeability of the core limits the performance at low frequencies, and the resulting length of winding limits the performance at high frequencies. There is a peak at around 40MHz where the electrical length of the transmission line is ¼ wavelength and a trough at around 80MHz wh ...
... Notice how the low permeability of the core limits the performance at low frequencies, and the resulting length of winding limits the performance at high frequencies. There is a peak at around 40MHz where the electrical length of the transmission line is ¼ wavelength and a trough at around 80MHz wh ...
Identification of Terminal Connection and System Function for Sensitive Frequency Response
... input and output quantities, at each discrete frequency. Once input and output quantity are decided, there is freedom to impose any valid condition on remaining terminals. Therefore, all possibilities arising from combinations of terminal connections, measurable quantities, and system functions will ...
... input and output quantities, at each discrete frequency. Once input and output quantity are decided, there is freedom to impose any valid condition on remaining terminals. Therefore, all possibilities arising from combinations of terminal connections, measurable quantities, and system functions will ...
Training Report on 220 to 132KV Substation
... manufactures of insulators is porcelain. There are several type of insulator (i.e. pine type, suspension type etc.) and there used in Sub-Station will depend upon the service requirement. 3) Isolating Switches :- In Sub-Station, it is often desired to disconnect a part of the system for general main ...
... manufactures of insulators is porcelain. There are several type of insulator (i.e. pine type, suspension type etc.) and there used in Sub-Station will depend upon the service requirement. 3) Isolating Switches :- In Sub-Station, it is often desired to disconnect a part of the system for general main ...
Mitigation of Inrush Currents in Network Transformers by Reducing
... current with zero residual flux is only 210 A (22 p.u.). Therefore, substantial improvement can be obtained when the residual flux is eliminated. Inrush currents have been reduced by 60% by eliminating the residual flux. B. Three-Phase Transformer Fig. 12 shows the circuit used to demagnetize a 500- ...
... current with zero residual flux is only 210 A (22 p.u.). Therefore, substantial improvement can be obtained when the residual flux is eliminated. Inrush currents have been reduced by 60% by eliminating the residual flux. B. Three-Phase Transformer Fig. 12 shows the circuit used to demagnetize a 500- ...
1 - MICE
... stations (TOF 0 and TOF 1), upstream of the cooling section and separated by about 10 m, will provide the basic trigger for the experiment, in coincidence with the ISIS clock. These two stations have precise timing (around 70 ps) and will provide muon identification by TOF. The second of these stati ...
... stations (TOF 0 and TOF 1), upstream of the cooling section and separated by about 10 m, will provide the basic trigger for the experiment, in coincidence with the ISIS clock. These two stations have precise timing (around 70 ps) and will provide muon identification by TOF. The second of these stati ...
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.