A Power Re-Use Technique for Improved Efficiency Robert Langridge,
... At low-input power levels, the efficiency drops because the diodes are unable to turn “on” and overcome the combination of supply voltage and built-in potential of the diode. However, this loss in efficiency does not degrade the overall system efficiency because most of the total RF power in the cir ...
... At low-input power levels, the efficiency drops because the diodes are unable to turn “on” and overcome the combination of supply voltage and built-in potential of the diode. However, this loss in efficiency does not degrade the overall system efficiency because most of the total RF power in the cir ...
SR2 Modules are designed for interconnection via CSInet which
... SR2 Distributed Network monitoring modules Remote power via PoE - reliable and redundant function modules - targeted monitoring Connect via CSInet or direct LAN connection for local monitoring Individual dedicated function modules are retrofitted/installed in power devices, HVAC, Fire Suppress ...
... SR2 Distributed Network monitoring modules Remote power via PoE - reliable and redundant function modules - targeted monitoring Connect via CSInet or direct LAN connection for local monitoring Individual dedicated function modules are retrofitted/installed in power devices, HVAC, Fire Suppress ...
International Electrical Engineering Journal (IEEJ) Vol. 6 (2015) No.2, pp. 1780-1786
... towards its maximum point causes the traditional load flow solution to reach its non-convergence point. Beyond this point, the ordinary load flow solution does not converge, which in turn forces the system to reach the voltage stability limit prior to bifurcation in the system. The margin measured f ...
... towards its maximum point causes the traditional load flow solution to reach its non-convergence point. Beyond this point, the ordinary load flow solution does not converge, which in turn forces the system to reach the voltage stability limit prior to bifurcation in the system. The margin measured f ...
Terms and Abbreviations
... Analog signal - A signal that attains an infinite number of different amplitude levels. AO - Analog Output Apparent Power - The power value obtained by multiplying the current by the voltage (P = I X E). 9. Axial dimension - This term is used for the measurement of the coupler distance during the ge ...
... Analog signal - A signal that attains an infinite number of different amplitude levels. AO - Analog Output Apparent Power - The power value obtained by multiplying the current by the voltage (P = I X E). 9. Axial dimension - This term is used for the measurement of the coupler distance during the ge ...
Optimizing Low Power Embedded Designs
... operation after the next wake up event. This is one of the key features which an SoC can have from a system point of view. In some systems, it is possible that for a certain period only some hardware functions are needed and not the MCU, such as when generating a waveform using a DAC. This task can ...
... operation after the next wake up event. This is one of the key features which an SoC can have from a system point of view. In some systems, it is possible that for a certain period only some hardware functions are needed and not the MCU, such as when generating a waveform using a DAC. This task can ...
PC Power Supply Repair
... check the collector-to-emitter resistance, then the collector-to-base resistance (Figure 4). If a short is found, replace both the transistor and the damper diode that’s across its emitter-collector. I normally use a Motorola MJE13009 for the power transistor and a 1N4937 for the damper diode. You s ...
... check the collector-to-emitter resistance, then the collector-to-base resistance (Figure 4). If a short is found, replace both the transistor and the damper diode that’s across its emitter-collector. I normally use a Motorola MJE13009 for the power transistor and a 1N4937 for the damper diode. You s ...
Large Scale Solar PV Investment Potential in Ontario 2010-2025
... • Somewhat similar to the SVC controller but connected in series with a transmission line. • The thyristor firing is synchronized with respect to the line current. • Filters are usually not used in this case, which lead to stringent limits on the firing angle α. • In steady state, the device control ...
... • Somewhat similar to the SVC controller but connected in series with a transmission line. • The thyristor firing is synchronized with respect to the line current. • Filters are usually not used in this case, which lead to stringent limits on the firing angle α. • In steady state, the device control ...
Power Optimization – a Reality Check - People @EECS
... Table 2: Properties of the Intel Core i7 Extreme Edition and X58 chipset conduct detailed experiments on two hardware platforms representing somewhat opposite ends of the spectrum: a low-power Intel Atom netbook platform, and an Intel Core i7 desktop. ...
... Table 2: Properties of the Intel Core i7 Extreme Edition and X58 chipset conduct detailed experiments on two hardware platforms representing somewhat opposite ends of the spectrum: a low-power Intel Atom netbook platform, and an Intel Core i7 desktop. ...
MS Supplies Technical Description Template
... CERN’s mission is to enable international collaboration in the field of high-energy particle physics research and to this end it designs, builds and operates particle accelerators and the associated experimental areas. At present more than 11 000 scientific users from research institutes all over th ...
... CERN’s mission is to enable international collaboration in the field of high-energy particle physics research and to this end it designs, builds and operates particle accelerators and the associated experimental areas. At present more than 11 000 scientific users from research institutes all over th ...
State identification of MV power network with wind power generation
... occur in various wind power source reactive power control modes. The wind farm with VMC tends to maintain the equal voltage output level on every single wind turbine. This is why the VMV variations range is then almost twice as small as for the RMC. The table 1 characterizes the voltage conditions i ...
... occur in various wind power source reactive power control modes. The wind farm with VMC tends to maintain the equal voltage output level on every single wind turbine. This is why the VMV variations range is then almost twice as small as for the RMC. The table 1 characterizes the voltage conditions i ...
Power System Reliability: adequacy-long term planning
... complete closure with loads to be met (to the extent possible) from other generating stations (refer para 3.3.3) shall also be studied. ...
... complete closure with loads to be met (to the extent possible) from other generating stations (refer para 3.3.3) shall also be studied. ...
uniblock ubsf
... The unique UNIBLOCK technology therefore offers low maintenance and high efficiency which results in significantly lower life-cycle cost. ...
... The unique UNIBLOCK technology therefore offers low maintenance and high efficiency which results in significantly lower life-cycle cost. ...
Improved Interline Unified Power-Quality Conditioner with
... connected to two buses BUS1 and BUS2 with voltages of Vs1 and Vs2, respectively. The shunt part of the IUPQC is connected to loads L11 and L12 with a current of il11 and il12. Supply voltages are denoted by Vs1 and Vs2 while load voltages are Vl1 and Vl2. Finally, feeder currents are denoted by is1 ...
... connected to two buses BUS1 and BUS2 with voltages of Vs1 and Vs2, respectively. The shunt part of the IUPQC is connected to loads L11 and L12 with a current of il11 and il12. Supply voltages are denoted by Vs1 and Vs2 while load voltages are Vl1 and Vl2. Finally, feeder currents are denoted by is1 ...
Sorensen 36 kW - 240 kW HPX Series 10 - 1000 V 45
... The HPX Series features two modes in one: Automatic constant voltage and constant current mode crossover with protection against hazardous faults. Remote Shutdown (S/D) Interlock provides various external output shutdown capability in case hazardous faults occur. Other features such as External Anal ...
... The HPX Series features two modes in one: Automatic constant voltage and constant current mode crossover with protection against hazardous faults. Remote Shutdown (S/D) Interlock provides various external output shutdown capability in case hazardous faults occur. Other features such as External Anal ...
3. starting a permanent split-capacitor motor
... two stator windings. The stator windings are named main windings and auxiliary windings. This type of motor has a capacitor (C) permanently connected in series with the auxiliary windings. This is the main reason why this motor is called single-phase with capacitor motor. This type of motor has not ...
... two stator windings. The stator windings are named main windings and auxiliary windings. This type of motor has a capacitor (C) permanently connected in series with the auxiliary windings. This is the main reason why this motor is called single-phase with capacitor motor. This type of motor has not ...
Presentation title (Position here) Tahoma, 32 points
... S = Ps = U x I [VA] Reactive power Q = Pq = U x I x sin φ [var] ...
... S = Ps = U x I [VA] Reactive power Q = Pq = U x I x sin φ [var] ...
Z04706163168
... in a two stages converter with the inherent characteristics such as high cost and the necessity of having very high efficiency in each stage. Recently, new PFC bridgeless promising solutions, mainly intent to replace the input rectifier and the boost converter, have emerged. These techniques are per ...
... in a two stages converter with the inherent characteristics such as high cost and the necessity of having very high efficiency in each stage. Recently, new PFC bridgeless promising solutions, mainly intent to replace the input rectifier and the boost converter, have emerged. These techniques are per ...
CO34543549
... minimum generation resources. If the transmission capability is less, then more generation would be required to serve the same load with same reliability. Hence the cost of electricity would be higher. The power system is a complex network consisting of synchronous generations, transmission lines, l ...
... minimum generation resources. If the transmission capability is less, then more generation would be required to serve the same load with same reliability. Hence the cost of electricity would be higher. The power system is a complex network consisting of synchronous generations, transmission lines, l ...
Assignment
... 1. A single phase full converter is used to control the speed of a 5hp, 110V, 1200rpm, separately excited DC motor. The converter is connected to a single phase 120V, 60Hz supply. The armature resistance is 0.4Ω and armature circuit inductance is 5mH. The motor voltage constant KØ=0.09V/rpm. a. Rect ...
... 1. A single phase full converter is used to control the speed of a 5hp, 110V, 1200rpm, separately excited DC motor. The converter is connected to a single phase 120V, 60Hz supply. The armature resistance is 0.4Ω and armature circuit inductance is 5mH. The motor voltage constant KØ=0.09V/rpm. a. Rect ...
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.