Low Power VLSI Design
... • Growth rate of these portable equipment is very high • For these devices, battery life is so important • Commercial success of these products depends on size, weight, cost, computing power and battery life • Need lower power methodology ...
... • Growth rate of these portable equipment is very high • For these devices, battery life is so important • Commercial success of these products depends on size, weight, cost, computing power and battery life • Need lower power methodology ...
an enhanced islanding microgrid reactive power
... within half a line frequency cycle. The two DG systems are now the sole power sources left to regulate the load voltages and to supply uninterrupted power in a certain predetermined DG power sharing scheme to all critical loads within the microgrid. Subsequently when the fault is cleared, the microg ...
... within half a line frequency cycle. The two DG systems are now the sole power sources left to regulate the load voltages and to supply uninterrupted power in a certain predetermined DG power sharing scheme to all critical loads within the microgrid. Subsequently when the fault is cleared, the microg ...
PowerProtector
... surpass the natural limitations of existing SuperCap designs. SuperCap is well known for its sensitivity to temperature change and has a tendency of losing its capacitance and functionality at extreme temperatures that are found in mission critical and industrial environments. The solid state capaci ...
... surpass the natural limitations of existing SuperCap designs. SuperCap is well known for its sensitivity to temperature change and has a tendency of losing its capacitance and functionality at extreme temperatures that are found in mission critical and industrial environments. The solid state capaci ...
5 Numerical Simulation of Electrical Transients
... transient calculations by hand is rather cumbersome or even impossible, and from the early days analogue scale models have been in use; the so-called Transient Network Analyser or TNA. The TNA consists of analogue building blocks, and transmission lines are built from lumped LC pi-sections. The firs ...
... transient calculations by hand is rather cumbersome or even impossible, and from the early days analogue scale models have been in use; the so-called Transient Network Analyser or TNA. The TNA consists of analogue building blocks, and transmission lines are built from lumped LC pi-sections. The firs ...
electrical machines two marks
... The core is constructed by sheet steel laminations assembled to provide a continuous magnetic path with minimum of air gap included. The steel used is of high silicon content sometimes heat treated to produce a high permeability and a low hysteresis loss at the usual operating flux densities. The ed ...
... The core is constructed by sheet steel laminations assembled to provide a continuous magnetic path with minimum of air gap included. The steel used is of high silicon content sometimes heat treated to produce a high permeability and a low hysteresis loss at the usual operating flux densities. The ed ...
150 KW DGFA - West Generator Services
... Separately Excited Permanent Magnet Generator (PMG) System - This option uses an integral PMG to supply power to the voltage regulator. A PMG system generally has better motor-starting performance, lower voltage dip upon load application, and better immunity from problems with harmonics in the main ...
... Separately Excited Permanent Magnet Generator (PMG) System - This option uses an integral PMG to supply power to the voltage regulator. A PMG system generally has better motor-starting performance, lower voltage dip upon load application, and better immunity from problems with harmonics in the main ...
3 Electric Currents from Magnetism
... Remember that batteries produce direct current. That is, the current from a battery does not change with time. In contrast, most electrical outlets supply alternating current. This is why many battery-powered devices, such as radios, require special adaptors to use power from an outlet. The electric ...
... Remember that batteries produce direct current. That is, the current from a battery does not change with time. In contrast, most electrical outlets supply alternating current. This is why many battery-powered devices, such as radios, require special adaptors to use power from an outlet. The electric ...
Simple and Series Circuits
... d. The bulb between Z and the battery will be the brightest. 6. Three small bulbs are connected in series. Their resistances are: 3.0, 6.0, and 9.0. They are placed in a circuit with a 12-volt power supply. Draw the circuit with an ammeter, and a voltmeter in position to measure the voltage acr ...
... d. The bulb between Z and the battery will be the brightest. 6. Three small bulbs are connected in series. Their resistances are: 3.0, 6.0, and 9.0. They are placed in a circuit with a 12-volt power supply. Draw the circuit with an ammeter, and a voltmeter in position to measure the voltage acr ...
Question Bank
... maximum working stress and permittivity 2.5, 3.0, 4.0 are used in single core cable. ...
... maximum working stress and permittivity 2.5, 3.0, 4.0 are used in single core cable. ...
V22138141
... it is having the advantages of high efficiency and smaller size and weight. But these power converters will draw pulsating input currents from the utility line, results in poor input power factor of the converters and also injects a significant amount of harmonic current to the utility line. So Powe ...
... it is having the advantages of high efficiency and smaller size and weight. But these power converters will draw pulsating input currents from the utility line, results in poor input power factor of the converters and also injects a significant amount of harmonic current to the utility line. So Powe ...
Power amplifier 65W with HEXFET
... A medium power amplifier that is characterized by a lot of good sound quality, but simultaneously is very simple in the construction. Him uses, enough time in my active loudspeakers. In his output stage exist the very good FET transistors, technology HEXFET, transistor which are controlled by voltag ...
... A medium power amplifier that is characterized by a lot of good sound quality, but simultaneously is very simple in the construction. Him uses, enough time in my active loudspeakers. In his output stage exist the very good FET transistors, technology HEXFET, transistor which are controlled by voltag ...
Power Electronic Devices For Railway Vehicles
... cilitate energy-savings and harmonization with the environment as well as provide the needed levels of safety and reliability demanded from public transportation systems. In addition to these demands, the market is requiring a diversity of enhancements in economic efficiency, speed, size and weight ...
... cilitate energy-savings and harmonization with the environment as well as provide the needed levels of safety and reliability demanded from public transportation systems. In addition to these demands, the market is requiring a diversity of enhancements in economic efficiency, speed, size and weight ...
Analysing electrical demand and supply (kW, kVAR, kVA, PF, V
... following power factor correction devices are generally used for power factor improvement before the meter: Static Capacitors: they provides leading current which neutralise (totally or approximately) the lagging inductive component of load current. Synchronous Condensers: a synchronous motor over-e ...
... following power factor correction devices are generally used for power factor improvement before the meter: Static Capacitors: they provides leading current which neutralise (totally or approximately) the lagging inductive component of load current. Synchronous Condensers: a synchronous motor over-e ...
High Power AC Drive and Motor Applications
... The first approach considered was to get the shaft spinning using the gas turbine engine prior to switching to the auxiliary motor. However, this did not allow for completely independent operation of the two systems. A variable speed drive (VSD) rather than a fixed speed drive approach was selected ...
... The first approach considered was to get the shaft spinning using the gas turbine engine prior to switching to the auxiliary motor. However, this did not allow for completely independent operation of the two systems. A variable speed drive (VSD) rather than a fixed speed drive approach was selected ...
T4900 VAr Load Sharer
... increase and decrease pulses to the motorized potentiometer. Via the motor ized potentiometer, the setting of the automatic voltage regulator (AVR) is done in order to regulate the reactive power with optimum speed and stability. The width of the pulses is proportional to the voltage / KVar load ...
... increase and decrease pulses to the motorized potentiometer. Via the motor ized potentiometer, the setting of the automatic voltage regulator (AVR) is done in order to regulate the reactive power with optimum speed and stability. The width of the pulses is proportional to the voltage / KVar load ...
Advanced Mechanical, Electrical and ANNEX I APS12 Technical Teaching Equipment
... the system is ready to inject the fault. Once the fault is produced, according to the protection relays setting, the first level protections should act, if not the second level protection (back-up protection) always act. Fault conditions can occur in different situations and scenarios: in the synchr ...
... the system is ready to inject the fault. Once the fault is produced, according to the protection relays setting, the first level protections should act, if not the second level protection (back-up protection) always act. Fault conditions can occur in different situations and scenarios: in the synchr ...
While references are made to material specifications in Part 2 of
... is to be measured between conductors and between conductors and earth and these values compared with those previously measured. Any large and abrupt decrease in insulation resistance is to be further investigated and corrected. ...
... is to be measured between conductors and between conductors and earth and these values compared with those previously measured. Any large and abrupt decrease in insulation resistance is to be further investigated and corrected. ...
Electrification
Electrification is the process of powering by electricity and is usually associated with changing over from another power source. The broad meaning of the term, such as in the history of technology and economic history, usually applies to a region or national economy. Broadly speaking, electrification was the build out of the electrical generating and distribution systems which occurred in Britain, the United States, and other countries from the mid-1880s until around 1950 and is in progress in rural areas in some developing countries. This included the change over from line shaft and belt drive using steam engines and water power to electric motors.The electrification of particular sectors of the economy is called by terms such as factory electrification, household electrification, rural electrification or railway electrification. It may also apply to changing industrial processes such as smelting, melting, separating or refining from coal or coke heating or chemical processes to some type of electric process such as electric arc furnace, electric induction or resistance heating or electrolysis or electrolytic separating.Electrification was called ""the greatest engineering achievement of the 20th Century"" by the National Academy of Engineering.