IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331
... consumption. PV energy avoids unnecessary fuel expenses and there is no air pollution or waste. Also, there are no mechanical vibrations or noises because the components of power generation based on PV energy use semiconductors. The life cycle of the solar cell is more than 20 years, and it can mini ...
... consumption. PV energy avoids unnecessary fuel expenses and there is no air pollution or waste. Also, there are no mechanical vibrations or noises because the components of power generation based on PV energy use semiconductors. The life cycle of the solar cell is more than 20 years, and it can mini ...
Open-circuit Test
... results are inaccurate. • In open and short circuit test iron losses and copper losses are determined separately but in actual use both losses occurs simultaneously. • The temperature rise in the transformer is due to total loss that occurs simultaneously during actual use, it can’t be determined by ...
... results are inaccurate. • In open and short circuit test iron losses and copper losses are determined separately but in actual use both losses occurs simultaneously. • The temperature rise in the transformer is due to total loss that occurs simultaneously during actual use, it can’t be determined by ...
LLC Resonant Converter for Front End DC/DC Conversion
... diagram is a Half Bridge configuration; in fact, this part can be half bridge with voltage splitting cap, full bridge or other topologies. Since there is a capacitor in series with power train, automatic flux balancing can be achieved. In this converter, two resonant frequencies exist. One is the r ...
... diagram is a Half Bridge configuration; in fact, this part can be half bridge with voltage splitting cap, full bridge or other topologies. Since there is a capacitor in series with power train, automatic flux balancing can be achieved. In this converter, two resonant frequencies exist. One is the r ...
POWER ELECTRONICS SYLLABUS
... input power factor and harmonic factor - continuous and Discontinuous load current - single phase dual converters power factor Improvements Extinction angle control - symmetrical angle control - PWM -single phase sinusoidal PWM single phase series converters - Applications -Numerical problems. THREE ...
... input power factor and harmonic factor - continuous and Discontinuous load current - single phase dual converters power factor Improvements Extinction angle control - symmetrical angle control - PWM -single phase sinusoidal PWM single phase series converters - Applications -Numerical problems. THREE ...
Digital Trip Coil Supervision Relay
... Figure 3 shows a typical three-coil DBT connection to a coil. In this way the relay can measure the coil resistance at any time (in reality, the association of the breaker coil with any other auxiliary coils), either by the 52/a type contact, if the breaker is closed, or the 52/b type if it is open. ...
... Figure 3 shows a typical three-coil DBT connection to a coil. In this way the relay can measure the coil resistance at any time (in reality, the association of the breaker coil with any other auxiliary coils), either by the 52/a type contact, if the breaker is closed, or the 52/b type if it is open. ...
Seminar Report
... An induction coil is wound on a ferrite core with an internal copper heat conductor connected to the lamp base and located in the centre of the lamp. A heat conductor removes heat from the re-entrant cavity and the induction coil. A 40 cm coaxial cable delivers power from the electronic ballast to t ...
... An induction coil is wound on a ferrite core with an internal copper heat conductor connected to the lamp base and located in the centre of the lamp. A heat conductor removes heat from the re-entrant cavity and the induction coil. A 40 cm coaxial cable delivers power from the electronic ballast to t ...
Chapter 3: Motionless Pulsed Systems
... In either case, vertical flux entering the core (b,3) from the external permanent magnets (1,2) is swept along within the core, in the direction of the double-tailed arrow (a), representing the magnetic flux of the input coil. These curved arrows (b) in the space between the magnets and the holes, ...
... In either case, vertical flux entering the core (b,3) from the external permanent magnets (1,2) is swept along within the core, in the direction of the double-tailed arrow (a), representing the magnetic flux of the input coil. These curved arrows (b) in the space between the magnets and the holes, ...
IEEE_Sensors_2016_PowerExtraction
... energy generated by PEHs is usually lower than the energy demanded by WSN, energy will have to be accumulated in an energy storage device such as capacitor and released to the WSN once sufficient. This means operation of an energy harvesting-based WNS is periodical. Extracting more power from the PE ...
... energy generated by PEHs is usually lower than the energy demanded by WSN, energy will have to be accumulated in an energy storage device such as capacitor and released to the WSN once sufficient. This means operation of an energy harvesting-based WNS is periodical. Extracting more power from the PE ...
File
... They never cross one another. They all have the same strength. Their density decreases (they spread out) when they move from an area of higher permeability to an area of lower permeability. Their density decreases with increasing distance from the poles. They are considered to have direction as if f ...
... They never cross one another. They all have the same strength. Their density decreases (they spread out) when they move from an area of higher permeability to an area of lower permeability. Their density decreases with increasing distance from the poles. They are considered to have direction as if f ...
HQ-170 Manual
... be rotated very slowly throughout its range, observing the S meter. It will be found that one particular spot throughout the range of the slot depth control a further reduction in the S meter reading will be obtained. Once this setting has been obtained, the slot depth control may be left permanentl ...
... be rotated very slowly throughout its range, observing the S meter. It will be found that one particular spot throughout the range of the slot depth control a further reduction in the S meter reading will be obtained. Once this setting has been obtained, the slot depth control may be left permanentl ...
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.