IOSR Journal of Electrical and Electronics Engineering (IOSRJEEE)
... system to regulate the voltage magnitude, improve the voltage quality, and enhance the system stability. Shuntconnected reactors are used to reduce the line over-voltages by consuming the reactive power, while shuntconnected capacitors are used to maintain the voltage levels by compensating the reac ...
... system to regulate the voltage magnitude, improve the voltage quality, and enhance the system stability. Shuntconnected reactors are used to reduce the line over-voltages by consuming the reactive power, while shuntconnected capacitors are used to maintain the voltage levels by compensating the reac ...
Title this is title and subtitle this is subtitle Power Factor Controller
... •• to increase the lifetime of the capacitors and contactors. requires less space in the capacitor bank panel. • Suitable for hot environments due to maximum ambient The RVC is an easy-to-install, easy to use, smarter power factor con- temperature rating of 70°C. • Not affected by harmonics. troll ...
... •• to increase the lifetime of the capacitors and contactors. requires less space in the capacitor bank panel. • Suitable for hot environments due to maximum ambient The RVC is an easy-to-install, easy to use, smarter power factor con- temperature rating of 70°C. • Not affected by harmonics. troll ...
inverter - Gustav Klein
... Control equipment for power plants Drives of power circuit breakers Remote control facilities for electricity supply utilities Traffic control installations Vital medical equipment in operating theatres Process control equipment and automation in manufacturing plants Data centers Air traffic control s ...
... Control equipment for power plants Drives of power circuit breakers Remote control facilities for electricity supply utilities Traffic control installations Vital medical equipment in operating theatres Process control equipment and automation in manufacturing plants Data centers Air traffic control s ...
“Fuzzy Logic Speed Controllers Using FPGA Technique For Three
... – provides electrical isolation between power switch and logic level Complexity of driver varies markedly among switches. MOSFET/IGBT drivers are simple but GTO drivers are very complicated and expensive. ...
... – provides electrical isolation between power switch and logic level Complexity of driver varies markedly among switches. MOSFET/IGBT drivers are simple but GTO drivers are very complicated and expensive. ...
A better Class-D amplifi er for mobile and wired applications
... - 3.0 W at 5 V into 4 Ω - 1.7 W at 5 V into 8 Ω - 800 mW at 3.6 V into 8 Ω Ñ Power supply range: 2.5 to 5.5 V Ñ Efficiency at 3.6 V with an 8 Ω speaker: 89 % at 400 mW Ñ Shutdown control Ñ Low supply current Ñ High PSSR: -93 dB eliminates need for voltage regulator Ñ Unique modulation scheme reduces ...
... - 3.0 W at 5 V into 4 Ω - 1.7 W at 5 V into 8 Ω - 800 mW at 3.6 V into 8 Ω Ñ Power supply range: 2.5 to 5.5 V Ñ Efficiency at 3.6 V with an 8 Ω speaker: 89 % at 400 mW Ñ Shutdown control Ñ Low supply current Ñ High PSSR: -93 dB eliminates need for voltage regulator Ñ Unique modulation scheme reduces ...
Chapter 6 - UniMAP Portal
... The equivalent circuit impedances of a 20-kVA, 8000/240-V, 60Hz transformer are to be determined. The open circuit test and the short circuit test were performed on the primary side of the transformer and the following data were taken: ...
... The equivalent circuit impedances of a 20-kVA, 8000/240-V, 60Hz transformer are to be determined. The open circuit test and the short circuit test were performed on the primary side of the transformer and the following data were taken: ...
ClimaCheck introduce EP Pro Scout High Performance Instruments
... is easy, thanks to the standard USB port. To configure, simply connect the meter to a PC using a USB cable, then use the Dent ViewPoint software to select CT type and other parameters. The meter is powered by the USB port while connected to a PC. Have several meters that require the same configurati ...
... is easy, thanks to the standard USB port. To configure, simply connect the meter to a PC using a USB cable, then use the Dent ViewPoint software to select CT type and other parameters. The meter is powered by the USB port while connected to a PC. Have several meters that require the same configurati ...
monitoring of energy quality for residential consumers
... any pronounced nonlinear character); In other words, supply with sinusoidal voltage currents produce deformed (generate harmonic currents); b) distorting elements of class II - powered by currents deform the deformation increases (such power lines whose own up circuit inductance and capacitance-freq ...
... any pronounced nonlinear character); In other words, supply with sinusoidal voltage currents produce deformed (generate harmonic currents); b) distorting elements of class II - powered by currents deform the deformation increases (such power lines whose own up circuit inductance and capacitance-freq ...
ac power measurements
... Obtain a linear regression line and show it on the data plot. Comment on the advantages and disadvantages of the two methods of measuring AC currents. ...
... Obtain a linear regression line and show it on the data plot. Comment on the advantages and disadvantages of the two methods of measuring AC currents. ...
IT8600 - MB Electronique
... And it has very compact size. For 420 V/20 A/1800 W input, its height is down to 3 U. The unique oscilloscope waveform display function of IT8600's can display input voltage & current as waveform. IT8600 supports complete DUT performance analysis. It is equipped with measurement modes for different ...
... And it has very compact size. For 420 V/20 A/1800 W input, its height is down to 3 U. The unique oscilloscope waveform display function of IT8600's can display input voltage & current as waveform. IT8600 supports complete DUT performance analysis. It is equipped with measurement modes for different ...
SUNNY CENTRAL 800CP XT / 850CP XT / 900CP XT
... reduced specific price, meaning that maximum yields are achieved with lower system costs. The Sunny Central CP XT is also optimized for cold temperatures down to −40 °C and with full nominal power in continuous operation up to 50 °C. The inverter includes all grid management functions and is prepare ...
... reduced specific price, meaning that maximum yields are achieved with lower system costs. The Sunny Central CP XT is also optimized for cold temperatures down to −40 °C and with full nominal power in continuous operation up to 50 °C. The inverter includes all grid management functions and is prepare ...
HVDC
... Each terminal has two converters of equal rated voltage, connected in series on the DC side The junctions between the converters is grounded Currents in the two poles are equal and there is no ground current If one pole is isolated due to fault, the other pole can operate with ground and carry half ...
... Each terminal has two converters of equal rated voltage, connected in series on the DC side The junctions between the converters is grounded Currents in the two poles are equal and there is no ground current If one pole is isolated due to fault, the other pole can operate with ground and carry half ...
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.