Modelling and Simulation of Step-Up and Step
... For α =0 (charge at active power constant). If β=0, equation (32) becomes a quadratic equation in U`out, which is easily soluble. If β=1, equation (32) is also a quadratic equation in U`out, so readily soluble. If β=2, there is a fourth degree equation whose analytical solution is expressed not so s ...
... For α =0 (charge at active power constant). If β=0, equation (32) becomes a quadratic equation in U`out, which is easily soluble. If β=1, equation (32) is also a quadratic equation in U`out, so readily soluble. If β=2, there is a fourth degree equation whose analytical solution is expressed not so s ...
STP 3 & 4 8.2 Offsite Power Systems
... without jeopardizing the other. For the purpose of analysis, the right-of-way has been considered as two independent rights-of-way. This right-of-way is approximately 20 miles long and terminates in four separate rights-of-way varying in width from 100 to 150 ft. The Velasco 27 line includes an unde ...
... without jeopardizing the other. For the purpose of analysis, the right-of-way has been considered as two independent rights-of-way. This right-of-way is approximately 20 miles long and terminates in four separate rights-of-way varying in width from 100 to 150 ft. The Velasco 27 line includes an unde ...
Full-Text PDF
... made by modern distance relays in less than one cycle. However, the operating time of the relay and its give the distance of fault location are not the only factor to be considered while selecting a distance protection for a transmission line that requires dynamic loading but also the loading of tra ...
... made by modern distance relays in less than one cycle. However, the operating time of the relay and its give the distance of fault location are not the only factor to be considered while selecting a distance protection for a transmission line that requires dynamic loading but also the loading of tra ...
VEC043 Manual 010/04
... The modified sine wave produced by the MAXX 750 SST inverter has an RMS (root mean square) voltage of 110 volts, which is the same as standard household power. Most AC voltmeters (both digital and analog) are sensitive to the average value of the waveform rather than the RMS value. They are calibra ...
... The modified sine wave produced by the MAXX 750 SST inverter has an RMS (root mean square) voltage of 110 volts, which is the same as standard household power. Most AC voltmeters (both digital and analog) are sensitive to the average value of the waveform rather than the RMS value. They are calibra ...
Chapter 1-AMSC
... 2) Harmonic iteration method (see the diagram below) Linear network (including power flow constraints) ...
... 2) Harmonic iteration method (see the diagram below) Linear network (including power flow constraints) ...
M. Chen, K.K. Afridi, S. Chakraborty, and D.J. Perreault, “A High-Power-Density Wide-Input-Voltage-Range Isolated dc-dc Converter Having a MultiTrack Architecture,” 2015 Energy Conversion Congress and Exposition , pp. 2017-2026, Sept. 2015.
... to redistribute charge such that the different windings of the isolation stage magnetics can be utilized equally. The PWM operation of the half-bridges (S1 -S4 ) in conjunction with the switched-capacitor conversion enables voltages VX and 2VX to be regulated with low stress on the inductor and with ...
... to redistribute charge such that the different windings of the isolation stage magnetics can be utilized equally. The PWM operation of the half-bridges (S1 -S4 ) in conjunction with the switched-capacitor conversion enables voltages VX and 2VX to be regulated with low stress on the inductor and with ...
Aalborg Universitet Control Strategies for Islanded Microgrid using Enhanced Hierarchical Control
... provide a controlled and high-quality power exchange with the grid or local loads. In islanded mode, the local loads should be supplied by the DG units, which now act as controlled voltage sources (CVS) [3]. And the MGs need some form of control in order to avoid circulating currents between the DG ...
... provide a controlled and high-quality power exchange with the grid or local loads. In islanded mode, the local loads should be supplied by the DG units, which now act as controlled voltage sources (CVS) [3]. And the MGs need some form of control in order to avoid circulating currents between the DG ...
Power Quality Issues, Disturbance Sources, Financial Impacts
... A frequency variation involves a change in frequency from the normally stable utility frequency of 50 or 60 Hz, depending on your geographic location. This may be caused by erratic operation of emergency generators or unstable frequency power sources. For sensitive equipment, the results can be data ...
... A frequency variation involves a change in frequency from the normally stable utility frequency of 50 or 60 Hz, depending on your geographic location. This may be caused by erratic operation of emergency generators or unstable frequency power sources. For sensitive equipment, the results can be data ...
Glossary of Terms by TDK-Lambda - TDK
... C – Abbreviation for capacitance, capacitor and coulomb. °C – Abbreviation for degrees Celsius, or degrees Centigrade. CB Report – Abbreviation of Certification Body's (or Bodies') Test Report. CB Scheme – Abbreviation of Certification Bodies' Scheme. An international scheme to facilitate internatio ...
... C – Abbreviation for capacitance, capacitor and coulomb. °C – Abbreviation for degrees Celsius, or degrees Centigrade. CB Report – Abbreviation of Certification Body's (or Bodies') Test Report. CB Scheme – Abbreviation of Certification Bodies' Scheme. An international scheme to facilitate internatio ...
Leakage current: Moore`s law meets static power
... to leakage is comparable to the simple serial case, apart from the extra gates that latches introduce to separate the pipe stages. Pipelined implementations can run at a lower voltage, which can reduce power consumption for both dynamic and static power compared to the serial case. Parallel implemen ...
... to leakage is comparable to the simple serial case, apart from the extra gates that latches introduce to separate the pipe stages. Pipelined implementations can run at a lower voltage, which can reduce power consumption for both dynamic and static power compared to the serial case. Parallel implemen ...
Load, Switch, and Commutation Considerations
... iv. Zener diode VZ1 in the parallel-load reset circuit: The energy ½LI 2 is transferred from the coil to the Zener diode when the switch is turned off. The power dissipated in the Zener diode at 20kHz is therefore ½LI 2f s = ½×1mH×1A 2×20kHz =10W. The total power drawn from the supply is the power s ...
... iv. Zener diode VZ1 in the parallel-load reset circuit: The energy ½LI 2 is transferred from the coil to the Zener diode when the switch is turned off. The power dissipated in the Zener diode at 20kHz is therefore ½LI 2f s = ½×1mH×1A 2×20kHz =10W. The total power drawn from the supply is the power s ...
Switch Mode DC Power Supply with Battery Backup SEC
... Please refer to the Layout at Fig. 2.1. The unit consists of 2 Sections - Switch Mode Power Supply (SMPS) Section and Battery Backup and Charging Section. The unit works as a DC Uninterruptible Power Source (DC UPS) in conjunction with an external 12V, Lead Acid backup battery. As long as AC input p ...
... Please refer to the Layout at Fig. 2.1. The unit consists of 2 Sections - Switch Mode Power Supply (SMPS) Section and Battery Backup and Charging Section. The unit works as a DC Uninterruptible Power Source (DC UPS) in conjunction with an external 12V, Lead Acid backup battery. As long as AC input p ...
2011 Amateur Radio Catalog
... A Pi-Network tuned input using slug tuned coils provides a good 50 ohm load of for your rig. A quiet internal fan draws in AL-572 cool air over power supply components and pressurizes the tube compartment. Grid current, plate current and forward PEP output power are continuously monitored by dual, l ...
... A Pi-Network tuned input using slug tuned coils provides a good 50 ohm load of for your rig. A quiet internal fan draws in AL-572 cool air over power supply components and pressurizes the tube compartment. Grid current, plate current and forward PEP output power are continuously monitored by dual, l ...
Design of Delta Primary - Transposed zigzag Secondary (DTz
... designed and used to reduce the bad impacts of the harmonic in the distribution power system. The DTz transformer is constructed with delta connection in primary winding and the three transposed windings at the different core legs of secondary winding. The harmonic reduction method of the DTz transf ...
... designed and used to reduce the bad impacts of the harmonic in the distribution power system. The DTz transformer is constructed with delta connection in primary winding and the three transposed windings at the different core legs of secondary winding. The harmonic reduction method of the DTz transf ...
standard power products
... Many electronic devices require two or more separate, stable and precisely regulated supply voltages. For example, microprocessors require a precise supply voltage of 3.3V or less, together with a conventional supply voltage of 5V. Integration of multiple converters into a single device helps to red ...
... Many electronic devices require two or more separate, stable and precisely regulated supply voltages. For example, microprocessors require a precise supply voltage of 3.3V or less, together with a conventional supply voltage of 5V. Integration of multiple converters into a single device helps to red ...
G044023238
... the dc capacitor CA and output filter (LB, CB) form as a third-order low-pass filter to filter out the switching harmonic in the output voltage. Hence, a lower capacitance dc capacitor CA of several tens of microfarads can be selected. 2.2 AC Buck Mode When the utility voltage is higher than the spe ...
... the dc capacitor CA and output filter (LB, CB) form as a third-order low-pass filter to filter out the switching harmonic in the output voltage. Hence, a lower capacitance dc capacitor CA of several tens of microfarads can be selected. 2.2 AC Buck Mode When the utility voltage is higher than the spe ...
Switch Mode DC Power Supply with Battery
... Please refer to the Layout at Fig. 2.1. The unit consists of 2 Sections - Switch Mode Power Supply (SMPS) Section and Battery Backup and Charging Section. The unit works as a DC Uninterruptible Power Source (DC UPS) in conjunction with an external 12V, Lead Acid backup battery. As long as AC input p ...
... Please refer to the Layout at Fig. 2.1. The unit consists of 2 Sections - Switch Mode Power Supply (SMPS) Section and Battery Backup and Charging Section. The unit works as a DC Uninterruptible Power Source (DC UPS) in conjunction with an external 12V, Lead Acid backup battery. As long as AC input p ...
Aalborg Universitet controller
... converters [13]–[15]. For example, it can contribute to a decrease of the fundamental component of the converter output, and also it will generate low order harmonics in the output PWM voltage of the converter [16]. Both issues can lead to distortions of the injected current [4] as well as additiona ...
... converters [13]–[15]. For example, it can contribute to a decrease of the fundamental component of the converter output, and also it will generate low order harmonics in the output PWM voltage of the converter [16]. Both issues can lead to distortions of the injected current [4] as well as additiona ...
9115 Multi Range DC Power Supply
... B&K Precision 9115 is a multi range single output high power supply with the capability of producing up to 80 V or 60 A at a maximum power output of 1200 W. With an easy-to-read VFD display, user-friendly controls and a numeric keypad, it allows for easy configurations from the front panel. Standard ...
... B&K Precision 9115 is a multi range single output high power supply with the capability of producing up to 80 V or 60 A at a maximum power output of 1200 W. With an easy-to-read VFD display, user-friendly controls and a numeric keypad, it allows for easy configurations from the front panel. Standard ...
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.