ELEMENTS OF ELECTRO- MECHANICAL ENERGY CONVERSION
... made it possible to device Electrical-Power-modulation systems so flexible and controllable that modern systems tend to be energy-efficient, with increase in life-span of main equipment and the associated auxiliary components (like switches, connecting cables, Generator contactors, etc.) since it is ...
... made it possible to device Electrical-Power-modulation systems so flexible and controllable that modern systems tend to be energy-efficient, with increase in life-span of main equipment and the associated auxiliary components (like switches, connecting cables, Generator contactors, etc.) since it is ...
A Soft-Switching Isolated Bidirectional Converter Fed
... types of batteries. The EZA series bidirectional DCDC converter is a power supply unit that exchanges power between the DC bus and energy storage system. Conventionally, when such a power supply is needed, there is no choice but to either develop a special power supply or to switch between 2 DC-DC c ...
... types of batteries. The EZA series bidirectional DCDC converter is a power supply unit that exchanges power between the DC bus and energy storage system. Conventionally, when such a power supply is needed, there is no choice but to either develop a special power supply or to switch between 2 DC-DC c ...
Document
... The circuit equivalent is shown in Figure 3. The shield can be thought of as a kind of shorted secondary, shorting out signals that otherwise would be coupled to the load, Z2. To be effective, magnetic field shields of this type must be large enough to intercept substantially all the lines of flux b ...
... The circuit equivalent is shown in Figure 3. The shield can be thought of as a kind of shorted secondary, shorting out signals that otherwise would be coupled to the load, Z2. To be effective, magnetic field shields of this type must be large enough to intercept substantially all the lines of flux b ...
Paper Title (use style: paper title)
... vicinity of the air gap of the transformer The leakage flux in the vicinity of the air gap of the transformer intersects with the winding. Then eddy-current loss and loss due to proximity effect are caused. If the switching frequency increases with the rise of the input voltage, these losses increas ...
... vicinity of the air gap of the transformer The leakage flux in the vicinity of the air gap of the transformer intersects with the winding. Then eddy-current loss and loss due to proximity effect are caused. If the switching frequency increases with the rise of the input voltage, these losses increas ...
Shielding and Grounding
... Multi-axis motion control servo systems contain digital and micro-processor circuitry that can be affected by ElectroMagnetic Interference (EMI). They also contain high energy switching amplifiers which can generate significant EMI at frequencies from 10MHz to 300MHz. Clearly the potential exists fo ...
... Multi-axis motion control servo systems contain digital and micro-processor circuitry that can be affected by ElectroMagnetic Interference (EMI). They also contain high energy switching amplifiers which can generate significant EMI at frequencies from 10MHz to 300MHz. Clearly the potential exists fo ...
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.