IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,
... Now a days, there is a large scarcity of electric energy in our world and at the same time the demand is also increases. Many distributed power system have been developed to meet this high demand by using renewable energy resources like solar systems, wind energy systems and other distributed energy ...
... Now a days, there is a large scarcity of electric energy in our world and at the same time the demand is also increases. Many distributed power system have been developed to meet this high demand by using renewable energy resources like solar systems, wind energy systems and other distributed energy ...
THE SYSTEM 5000™
... >> Multiple Bipolar Modes – Micro bipolar for fine and precise coagulation. Macro bipolar for more energy intensive bipolar applications ...
... >> Multiple Bipolar Modes – Micro bipolar for fine and precise coagulation. Macro bipolar for more energy intensive bipolar applications ...
Improvement of Transmission Line Power Transfer Capability, Case
... DUE to the significant power demand increase, the transmission line operators are required to increase transmission line power transfer capability. In this context, they have various options such as building an additional parallel transmission line which is not a cost effective option especially for ...
... DUE to the significant power demand increase, the transmission line operators are required to increase transmission line power transfer capability. In this context, they have various options such as building an additional parallel transmission line which is not a cost effective option especially for ...
An Auxillary Zero State Synthesizer to Reduce Common Mode
... this four-leg inverter employs three carrier waves phase displaced by 120o. However, the modulation index has to be limited to 0.66 p.u. in this process in order to avoid the zero states where all the upper switches or all the lower switches are required to be closed. This not only affects the dc bu ...
... this four-leg inverter employs three carrier waves phase displaced by 120o. However, the modulation index has to be limited to 0.66 p.u. in this process in order to avoid the zero states where all the upper switches or all the lower switches are required to be closed. This not only affects the dc bu ...
Radiated Power and Field Strength from UHF ISM Transmitters
... Figure 1. Following Equation 13, the gain of this antenna Remembering that PR is related to the received volt- is 5.6 dB at 300 MHz. age by Equation 8 leads to Equation 11, which links VR to If we apply the information from Equation 13 and E as follows. Figure 1 to the FCC average field-strength lim ...
... Figure 1. Following Equation 13, the gain of this antenna Remembering that PR is related to the received volt- is 5.6 dB at 300 MHz. age by Equation 8 leads to Equation 11, which links VR to If we apply the information from Equation 13 and E as follows. Figure 1 to the FCC average field-strength lim ...
Variable Frequency Drives - a Comparison of VSI versus
... b. The LCI drive always operates at continuous current by design. Inter-harmonics in the power system are minimized by having sufficient inductance in the dc link inductor that decouples the source and load converters. c. The cable limits for the LCI system are established by the capacitance of the ...
... b. The LCI drive always operates at continuous current by design. Inter-harmonics in the power system are minimized by having sufficient inductance in the dc link inductor that decouples the source and load converters. c. The cable limits for the LCI system are established by the capacitance of the ...
Maurizio Delfanti - CIRED • International Conference on Electricity
... electrical supply system below a specified start threshold. Note 1: For the purpose of this standard, the dip start threshold is equal to 90 % of the reference voltage. Note 2: Typically, a dip is associated with the occurrence and termination of a short circuit or other extreme current increase on ...
... electrical supply system below a specified start threshold. Note 1: For the purpose of this standard, the dip start threshold is equal to 90 % of the reference voltage. Note 2: Typically, a dip is associated with the occurrence and termination of a short circuit or other extreme current increase on ...
ABSTRACT transmission line aspects of windings yields attenuation and
... Therefore a detector operating at one frequency will detect a large signal, but another detector operating at a different frequency may detect almost nothing above the noise. Although not shown in Figure .5, the attenuation at frequencies above 35 MHz is much stronger. Kemp [|14] has shown that, i ...
... Therefore a detector operating at one frequency will detect a large signal, but another detector operating at a different frequency may detect almost nothing above the noise. Although not shown in Figure .5, the attenuation at frequencies above 35 MHz is much stronger. Kemp [|14] has shown that, i ...
AD8225 英文数据手册DataSheet 下载
... stray capacitance, or series impedance effects. If the desired voltage is converted to a current, however, the effects of ambient noise are mitigated. All that is required is a voltage to current conversion at the source, and an I-to-V conversion at the other end to reverse the process. Figure 5 ill ...
... stray capacitance, or series impedance effects. If the desired voltage is converted to a current, however, the effects of ambient noise are mitigated. All that is required is a voltage to current conversion at the source, and an I-to-V conversion at the other end to reverse the process. Figure 5 ill ...
Generator Owner VSS MEN_LCRA-v1
... of 0.95 or less, both determined at the generating unit's maximum net power to be supplied to the ERCOT Transmission Grid and at the transmission system Voltage Profile established by ERCOT, and both measured at the POI. The Reactive Power Capability requirements shall be available at all MW output ...
... of 0.95 or less, both determined at the generating unit's maximum net power to be supplied to the ERCOT Transmission Grid and at the transmission system Voltage Profile established by ERCOT, and both measured at the POI. The Reactive Power Capability requirements shall be available at all MW output ...
A Monolithic High-Efficiency 2.4-GHz 20-dBm SiGe BiCMOS Envelope-Tracking OFDM Power Amplifier
... the signal bandwidth [2], [29]. For narrow-bandwidth applications, most high-efficiency switching-mode DC/DC converters for PA applications are realized by traditional delta-sigma [13], [27], [30], [31] or pulsewidth modulation (PWM) [9], [32], [33] modulators. However, the high switching frequency ...
... the signal bandwidth [2], [29]. For narrow-bandwidth applications, most high-efficiency switching-mode DC/DC converters for PA applications are realized by traditional delta-sigma [13], [27], [30], [31] or pulsewidth modulation (PWM) [9], [32], [33] modulators. However, the high switching frequency ...
Implementation of the ESVM
... results, all the components should be stable low temperature-coefficient components, such as metalfilm resistors. The capacitor should have low dielectric absorption; depending on the temperature characteristics desired, NPO ceramic, polystyrene, Teflon or polypropylene are best suited. A capacitor ...
... results, all the components should be stable low temperature-coefficient components, such as metalfilm resistors. The capacitor should have low dielectric absorption; depending on the temperature characteristics desired, NPO ceramic, polystyrene, Teflon or polypropylene are best suited. A capacitor ...
TVS_web
... conditions stated in these standards. The writer has observed 0.5 us, 1500 V closely spaced multiple voltage spikes while de-energizing relays. When your power fails, energy stored in inductive loads such as transformers and motors is dumped into the utility line. This produces spikes which can latc ...
... conditions stated in these standards. The writer has observed 0.5 us, 1500 V closely spaced multiple voltage spikes while de-energizing relays. When your power fails, energy stored in inductive loads such as transformers and motors is dumped into the utility line. This produces spikes which can latc ...
PowerPoint 演示文稿
... Input three-phase and output three-phase, top/bottom outlet compatible, dimensions（H*W*D）2000*1200*850mm Easy installation-connecting power cables without removing the side panels and cabinets can be installed in parallel, top/bottom outlet compatible. ...
... Input three-phase and output three-phase, top/bottom outlet compatible, dimensions（H*W*D）2000*1200*850mm Easy installation-connecting power cables without removing the side panels and cabinets can be installed in parallel, top/bottom outlet compatible. ...
Comparing Circuit Protection Technologies for 48 V DC in High
... • Recent interest from OEM customers considering additional surge withstand requirements ...
... • Recent interest from OEM customers considering additional surge withstand requirements ...
Third-Order ΣΑ Modulator with 61-dB SNR and 6-MHz
... A 5-bit DAC made by an array of capacitors would require using 32 unity elements whose value should be too small to ensure the required matching performance. For this reason, the DACs have been realized by using a resistive divider with 32 equal resistances of 200 . Moreover, in order to avoid int ...
... A 5-bit DAC made by an array of capacitors would require using 32 unity elements whose value should be too small to ensure the required matching performance. For this reason, the DACs have been realized by using a resistive divider with 32 equal resistances of 200 . Moreover, in order to avoid int ...
Pulse-width modulation
Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.