AB34169175
... By making phase angle δ negative, power can be extracted from DC link. If the STATCOM becomes lesser than the extracted power, Pc in becomes negative and STATCOM starts to deliver active power to the source. During this transient state operation, Vd gradually decreases. The phasor diagrams which ill ...
... By making phase angle δ negative, power can be extracted from DC link. If the STATCOM becomes lesser than the extracted power, Pc in becomes negative and STATCOM starts to deliver active power to the source. During this transient state operation, Vd gradually decreases. The phasor diagrams which ill ...
design and implementation of power factor correction (pfc)
... Digital signal processing (DSP) are designed for the purpose of control loop implementation, and are widely used on motor controlling, uninterruptible power supplies (UPS) and movement controlling applications. Owing to their high CPU bandwidth and the peripherals, integrated with them, in order to ...
... Digital signal processing (DSP) are designed for the purpose of control loop implementation, and are widely used on motor controlling, uninterruptible power supplies (UPS) and movement controlling applications. Owing to their high CPU bandwidth and the peripherals, integrated with them, in order to ...
Structure and Control Strategy for a Parallel Hybrid Fuel Cell
... failure of FC. Nowadays, these auxiliary sources can be either batteries or supercapacitors (SCs) [9] [10]. But thermal constraints in automotive applications are severe and the braking power requested is even greater than the accelerating power. Sometimes batteries are not able to support this high ...
... failure of FC. Nowadays, these auxiliary sources can be either batteries or supercapacitors (SCs) [9] [10]. But thermal constraints in automotive applications are severe and the braking power requested is even greater than the accelerating power. Sometimes batteries are not able to support this high ...
Optimal Location and Sizing of Distributed Generation Using Krill
... To meet the present growing domestic, industrial and commercial load day by day, effective planning of radial distribution network is required. To ensure the effective planning with load transferring, the load flow study becomes utmost important. Load flow analysis is concerned with describing the o ...
... To meet the present growing domestic, industrial and commercial load day by day, effective planning of radial distribution network is required. To ensure the effective planning with load transferring, the load flow study becomes utmost important. Load flow analysis is concerned with describing the o ...
International Electrical Engineering Journal (IEEJ) Vol. 5(2014) No.12, pp. 1696-1702
... important problems in power systems. Major point is operating the system unconfident mode and also to get better the economy of the system. The sources of the reactive power are the generators, synchronous condensers, capacitors, static compensators and tap changing transformers. Here the reactive p ...
... important problems in power systems. Major point is operating the system unconfident mode and also to get better the economy of the system. The sources of the reactive power are the generators, synchronous condensers, capacitors, static compensators and tap changing transformers. Here the reactive p ...
Long Lifetime DC-Link Voltage Stabilization Module for Smart Grid Application Huai Wang
... typical 2,000 to typical 100, 000 lifetime 10,000 hours * hours* cost low relatively high *Under rated conditions. ** Equivalent series resistance. ...
... typical 2,000 to typical 100, 000 lifetime 10,000 hours * hours* cost low relatively high *Under rated conditions. ** Equivalent series resistance. ...
Earth Leakage Problem of Superconductor Magnet System at TLS
... NSRRC, Hsin-Chu, Taiwan Abstract Due to the inherent connection structure between the power supplies and the superconducting magnetic coil, the power supplies are seeing each others as loads through the coil. It has been observed in the pilot test at TLS that there is about 300mA earth leakage curre ...
... NSRRC, Hsin-Chu, Taiwan Abstract Due to the inherent connection structure between the power supplies and the superconducting magnetic coil, the power supplies are seeing each others as loads through the coil. It has been observed in the pilot test at TLS that there is about 300mA earth leakage curre ...
Variable Frequency Drive - UCF EECS
... power cycling) to match the current load can have massive energy savings for the building owner. Beyond the current applications where variable speed is the only justifiable reason to use a VFD, if implemented on a large scale on large motors (over about 50hp), has the potential to increase grid eff ...
... power cycling) to match the current load can have massive energy savings for the building owner. Beyond the current applications where variable speed is the only justifiable reason to use a VFD, if implemented on a large scale on large motors (over about 50hp), has the potential to increase grid eff ...
NC-Watch solution
... power usage Nokian Watch solution makes it possible to know: - How much reactive power you use. - When you use reactive power. - Where you use reactive power. ...
... power usage Nokian Watch solution makes it possible to know: - How much reactive power you use. - When you use reactive power. - Where you use reactive power. ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... interfaces. The power electronic system also contributes to power quality problem. Under the deregulated environment, in which electric utilities are expected to compete with each other, the customer satisfaction becomes very important. The impact of power quality problems is increasingly felt by cu ...
... interfaces. The power electronic system also contributes to power quality problem. Under the deregulated environment, in which electric utilities are expected to compete with each other, the customer satisfaction becomes very important. The impact of power quality problems is increasingly felt by cu ...
T.W. Barton, J.L. Dawson, and D.J. Perreault, “Experimental Validation of a Four-Way Outphasing Combiner for Microwave Power Amplification,” IEEE Microwave and Wireless Component Letters , Vol. 23, No. 1, pp. 28-30, Jan. 2013.
... power ratios (PAPR) to effectively use the allowed spectrum. In order to reproduce a signal varying over a wide output power range, the PA has the competing requirements of simultaneous linearity and efficiency. A wide variety of techniques have been explored in an effort to develop power amplifier ...
... power ratios (PAPR) to effectively use the allowed spectrum. In order to reproduce a signal varying over a wide output power range, the PA has the competing requirements of simultaneous linearity and efficiency. A wide variety of techniques have been explored in an effort to develop power amplifier ...
Pre-test - Faculty
... b) Connect the power supply to a tester. Discussion Point Troubleshooting the power supply The power supply must be “under a load” for it to be tested. Something must be hooked up to it—either a tester or a motherboard—to test it properly. A faulty motherboard or faulty device can shut down the powe ...
... b) Connect the power supply to a tester. Discussion Point Troubleshooting the power supply The power supply must be “under a load” for it to be tested. Something must be hooked up to it—either a tester or a motherboard—to test it properly. A faulty motherboard or faulty device can shut down the powe ...
Chapter 9 : Power Supplies
... new booster compared to the old one is the decrease of the repetition frequency to 1Hz. As a result, the White circuits of the old machine cannot be used for SESAME and Ramping Power Supplies should replace them. The output current of a ramping power supply, however, moves linearly from the injectio ...
... new booster compared to the old one is the decrease of the repetition frequency to 1Hz. As a result, the White circuits of the old machine cannot be used for SESAME and Ramping Power Supplies should replace them. The output current of a ramping power supply, however, moves linearly from the injectio ...
Band for Microwave Power Transmission
... where Pt is the power of the emitter, Gt and Gr are the emitter and receiver antenna gain respectively, λ is the wavelength used and R is the distance separating the emitter and the receiver. The available power at a certain distance from the emitter decreases as the frequency increases. Frequencies ...
... where Pt is the power of the emitter, Gt and Gr are the emitter and receiver antenna gain respectively, λ is the wavelength used and R is the distance separating the emitter and the receiver. The available power at a certain distance from the emitter decreases as the frequency increases. Frequencies ...
Xilinx Template (light) rev
... This is used for picking out a sufficient power supply Does not guarantee that your design is going to work, just that the device will configure Refer to the Spartan-6 FPGA Data Sheet or the Virtex-6 FPGA Data Sheet ...
... This is used for picking out a sufficient power supply Does not guarantee that your design is going to work, just that the device will configure Refer to the Spartan-6 FPGA Data Sheet or the Virtex-6 FPGA Data Sheet ...
an improved hybrid dstatcom topology to compensate
... quality (PQ) in a distribution system. However, these usually have problems such as fixed compensation, system-parameter-dependent performance, and possible resonance with line reactance. ...
... quality (PQ) in a distribution system. However, these usually have problems such as fixed compensation, system-parameter-dependent performance, and possible resonance with line reactance. ...
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.