amrita sai institute of science and technology
... 10) Rotating field makes the overall construction very simple. With simple, robust mechanical construction and low inertia of rotor, it can be driven at high speeds. So greater output can obtained from an alternator of given size. 11) If field is rotating, to excite it be external d.c. supply two sl ...
... 10) Rotating field makes the overall construction very simple. With simple, robust mechanical construction and low inertia of rotor, it can be driven at high speeds. So greater output can obtained from an alternator of given size. 11) If field is rotating, to excite it be external d.c. supply two sl ...
Chapter 13 Transformer Applications Chapter Objectives:
... Be familiar with ideal autotransformers. Learn how to analyze circuits involving three-phase transformers. Be able to use PSpice to analyze magnetically coupled circuits. Apply what is learnt to transformer as an isolation device and power distribution Huseyin Bilgekul Eeng224 Circuit Theory II Depa ...
... Be familiar with ideal autotransformers. Learn how to analyze circuits involving three-phase transformers. Be able to use PSpice to analyze magnetically coupled circuits. Apply what is learnt to transformer as an isolation device and power distribution Huseyin Bilgekul Eeng224 Circuit Theory II Depa ...
inductive high voltage pulse generator based on resonance system
... A. Lindblom — J. Isberg — H. Bernhoff — M. Leijon: INDUCTIVE HIGH VOLTAGE PULSE GENERATOR BASED ON . . . ...
... A. Lindblom — J. Isberg — H. Bernhoff — M. Leijon: INDUCTIVE HIGH VOLTAGE PULSE GENERATOR BASED ON . . . ...
R a
... produce an opposing field that cancels out the AR in the interpolar region. Thus this winding is also connected in series with the armature winding. Note: The UVic lab motors have interpoles in them. This should be connected in series with the armature winding for experiments. dcmotor ...
... produce an opposing field that cancels out the AR in the interpolar region. Thus this winding is also connected in series with the armature winding. Note: The UVic lab motors have interpoles in them. This should be connected in series with the armature winding for experiments. dcmotor ...
Kirby_4Nov08_Ned - Indico
... However the recent magnet tests have only manages to quench the high field volumes, about 15% of the coils. We need to develop a working quench heater, or put more copper in the strand. We could also use Nb-Ti in the low field volumes where we have a working quench heater design. ...
... However the recent magnet tests have only manages to quench the high field volumes, about 15% of the coils. We need to develop a working quench heater, or put more copper in the strand. We could also use Nb-Ti in the low field volumes where we have a working quench heater design. ...
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.