Welcome to AntennaSelect How a slot antenna works
... Here, we'll consider typical two-way isolated Power Dividers. The Isolated Power Dividers that are normally used with Broadcast Antennas are usually tightly-coupled coaxial or stripline transmission line directional couplers. In these devices, the physical dimensions and geometries of the internal s ...
... Here, we'll consider typical two-way isolated Power Dividers. The Isolated Power Dividers that are normally used with Broadcast Antennas are usually tightly-coupled coaxial or stripline transmission line directional couplers. In these devices, the physical dimensions and geometries of the internal s ...
Paper - Asee peer logo
... the lab. The labs are divided into three broad categories – AC power measurements (single phase & three-phase), DC Machines, and AC Machines (Transformer & Induction Machines); and are performed in that order. The results obtained by a student group (co-authors) for each of these labs are included i ...
... the lab. The labs are divided into three broad categories – AC power measurements (single phase & three-phase), DC Machines, and AC Machines (Transformer & Induction Machines); and are performed in that order. The results obtained by a student group (co-authors) for each of these labs are included i ...
Mohamed Moenes Mohamed Salama _PAPER_03 ESTIMATING
... phenomenon is referred to as voltage instability or voltage collapse [1-5]. It is characterized by a continuous decline of voltage, which can occur due to the inability of the network to meet the increasing demand for reactive power. Available methods for voltage stability assessment are usually cla ...
... phenomenon is referred to as voltage instability or voltage collapse [1-5]. It is characterized by a continuous decline of voltage, which can occur due to the inability of the network to meet the increasing demand for reactive power. Available methods for voltage stability assessment are usually cla ...
Physics 151
... Ideally, we envision the power supply casing housing an ideal source of EMF, set at 5 V in this example, as shown in Figure 1 above. If it really is ideal, that means it will maintain the 5 V potential difference between the red and black terminals no matter what we connect to those terminals. For e ...
... Ideally, we envision the power supply casing housing an ideal source of EMF, set at 5 V in this example, as shown in Figure 1 above. If it really is ideal, that means it will maintain the 5 V potential difference between the red and black terminals no matter what we connect to those terminals. For e ...
MPPT with PFC
... turbine with DC-DC converter for maximization of power production. Power electronics have an important role for controlling electrical characteristics of wind turbines. For SWTG in battery charging applications, DC-DC converters have been used for modifying the electrical load in order to maximize e ...
... turbine with DC-DC converter for maximization of power production. Power electronics have an important role for controlling electrical characteristics of wind turbines. For SWTG in battery charging applications, DC-DC converters have been used for modifying the electrical load in order to maximize e ...
Curva de Potência de Turbinas Eólicas
... turbine with DC-DC converter for maximization of power production. Power electronics have an important role for controlling electrical characteristics of wind turbines. For SWTG in battery charging applications, DC-DC converters have been used for modifying the electrical load in order to maximize e ...
... turbine with DC-DC converter for maximization of power production. Power electronics have an important role for controlling electrical characteristics of wind turbines. For SWTG in battery charging applications, DC-DC converters have been used for modifying the electrical load in order to maximize e ...
grid integration of offshore wind farms using multi
... Case I: Frequency support and voltage regulation As the active power balance in the power network is strongly coupled to the frequency, any mismatch between the generation and demand may cause the system frequency to rise or decrease, depending on the net difference between generation and demand. Si ...
... Case I: Frequency support and voltage regulation As the active power balance in the power network is strongly coupled to the frequency, any mismatch between the generation and demand may cause the system frequency to rise or decrease, depending on the net difference between generation and demand. Si ...
Document
... Step 1: Determine the phasor for each term. Step 2: Add the phasors using complex arithmetic. Step 3: Convert the sum to polar form. Step 4: Write the result as a time function. ...
... Step 1: Determine the phasor for each term. Step 2: Add the phasors using complex arithmetic. Step 3: Convert the sum to polar form. Step 4: Write the result as a time function. ...
TRMS three- and single phase digital wattmeters
... heating resistors or lighting systems which, when started up, cause a considerable rush of current. Although they last only a short time, these currents can trigger the safety devices or even damage an installation. To counter this, the PX 120 and PX 110 are provided with the INRUSH function, which ...
... heating resistors or lighting systems which, when started up, cause a considerable rush of current. Although they last only a short time, these currents can trigger the safety devices or even damage an installation. To counter this, the PX 120 and PX 110 are provided with the INRUSH function, which ...
IOSR Journal of Electrical and Electronics Engineering (IOSRJEEE)
... devices has increased. These elements not only in the steady state performance can be improved power systems are, but also its high speed compared to the system against disturbances. The generation of bulk power at remote locations necessitates the use of transmission line to connect generation site ...
... devices has increased. These elements not only in the steady state performance can be improved power systems are, but also its high speed compared to the system against disturbances. The generation of bulk power at remote locations necessitates the use of transmission line to connect generation site ...
Power factor
In electrical engineering, the power factor of an AC electrical power system is defined as the ratio of the real power flowing to the load to the apparent power in the circuit, and is a dimensionless number in the closed interval of -1 to 1. A power factor of less than one means that the voltage and current waveforms are not in phase, reducing the instantaneous product of the two waveforms (V x I). Real power is the capacity of the circuit for performing work in a particular time. Apparent power is the product of the current and voltage of the circuit. Due to energy stored in the load and returned to the source, or due to a non-linear load that distorts the wave shape of the current drawn from the source, the apparent power will be greater than the real power. A negative power factor occurs when the device (which is normally the load) generates power, which then flows back towards the source, which is normally considered the generator.In an electric power system, a load with a low power factor draws more current than a load with a high power factor for the same amount of useful power transferred. The higher currents increase the energy lost in the distribution system, and require larger wires and other equipment. Because of the costs of larger equipment and wasted energy, electrical utilities will usually charge a higher cost to industrial or commercial customers where there is a low power factor.Linear loads with low power factor (such as induction motors) can be corrected with a passive network of capacitors or inductors. Non-linear loads, such as rectifiers, distort the current drawn from the system. In such cases, active or passive power factor correction may be used to counteract the distortion and raise the power factor. The devices for correction of the power factor may be at a central substation, spread out over a distribution system, or built into power-consuming equipment.