IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,
... Where T is the period and to be the center time, has been used to excite in the probe feed. The current and voltage are transformed to Fourier domain after final time domain results are obtained. The input impedance of the antenna is obtained from the equation (9). Zin=V (f)/I (f) ...
... Where T is the period and to be the center time, has been used to excite in the probe feed. The current and voltage are transformed to Fourier domain after final time domain results are obtained. The input impedance of the antenna is obtained from the equation (9). Zin=V (f)/I (f) ...
Alberta Reliability Standard – BES Cyber System Categorization Cyber Security CIP-002-AB-5.1
... demonstrate that the Responsible Entity has reviewed and updated, where necessary, the identifications required in requirement R1 and its parts, and has had its CIP senior manager or delegate approve the identifications required in requirement R1 and its parts at least once every 15 months, even if ...
... demonstrate that the Responsible Entity has reviewed and updated, where necessary, the identifications required in requirement R1 and its parts, and has had its CIP senior manager or delegate approve the identifications required in requirement R1 and its parts at least once every 15 months, even if ...
Chapter 1-AMSC
... •VDC2 has ripples associated with the motor frequency •VDC2 produces IDC2 through some impedances (including supply system Z) •IDC2 is rectified (or penetrate) into the AC side to produce IAC2 •Therefore, interharmonic current of IAC2 is affected by some impedances ...
... •VDC2 has ripples associated with the motor frequency •VDC2 produces IDC2 through some impedances (including supply system Z) •IDC2 is rectified (or penetrate) into the AC side to produce IAC2 •Therefore, interharmonic current of IAC2 is affected by some impedances ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... inverter as compared to single level inverters have advantages like minimum harmonic distortion, reduced EMI/RFI generation and can operate on several voltage levels. A multi-stage inverter is being utilized for multipurpose applications, such as active power filters, static var compensators and mac ...
... inverter as compared to single level inverters have advantages like minimum harmonic distortion, reduced EMI/RFI generation and can operate on several voltage levels. A multi-stage inverter is being utilized for multipurpose applications, such as active power filters, static var compensators and mac ...
Aalborg Universitet
... matching frequency is determined by Ls1 and Cgs1 . In order to obtain an optimum input matching at the desired frequency band, the effects of Ls1 and Cgs1 on the input matching have been studied. Based on Eq. (2), the calculated |S11 | of the common-gate stage with five different values of Ls1 are sh ...
... matching frequency is determined by Ls1 and Cgs1 . In order to obtain an optimum input matching at the desired frequency band, the effects of Ls1 and Cgs1 on the input matching have been studied. Based on Eq. (2), the calculated |S11 | of the common-gate stage with five different values of Ls1 are sh ...
Aalborg Universitet Controlled Single Phase Islanded Microgrids
... the inverters to share the real and reactive power required by the loads. This paper focuses on some of the limitations of parallel islanded single phase inverters using droop control. Algorithms with the aim to address the following limitations in islanded operation were proposed: reactive power sh ...
... the inverters to share the real and reactive power required by the loads. This paper focuses on some of the limitations of parallel islanded single phase inverters using droop control. Algorithms with the aim to address the following limitations in islanded operation were proposed: reactive power sh ...
Harmonics and IEEE 519
... circuits can concentrate the flow of harmonic currents in specific lines or feeders to a point where telephone interference is a major problem. The increase in the use of static converters, both in industrial control equipment and in domestic applications, combined with the increase in use of power ...
... circuits can concentrate the flow of harmonic currents in specific lines or feeders to a point where telephone interference is a major problem. The increase in the use of static converters, both in industrial control equipment and in domestic applications, combined with the increase in use of power ...
CARMALO
... period, measured with the linelength system. (bottom) Outdoor air temperature measured over the same period. The system is simple in concept. On each receiver, a sample of the laser carrying the ~1200 MHz reference signal is extracted with a 10 dB fiberoptic coupler and looped back to the lab on a s ...
... period, measured with the linelength system. (bottom) Outdoor air temperature measured over the same period. The system is simple in concept. On each receiver, a sample of the laser carrying the ~1200 MHz reference signal is extracted with a 10 dB fiberoptic coupler and looped back to the lab on a s ...
Evaluation of Power Transistors Figure of Merit for Hard
... the most manners (switching frequency, load current). It must be said, that all FOMs have been computed for main circuit variables, at which experimental measurements were provided (Table 3). As can be seen, the value of FoM from Table 2 is higher compared to FoMSW , because losses from gate drive a ...
... the most manners (switching frequency, load current). It must be said, that all FOMs have been computed for main circuit variables, at which experimental measurements were provided (Table 3). As can be seen, the value of FoM from Table 2 is higher compared to FoMSW , because losses from gate drive a ...
Pulse Width Modulation (PWM)
... Since the motor is at full voltage during the ON pulse, the motor runs at full torque during the ON pulse. A 25% duty cycle reduces the power applied to the motor close to 25%, yet the speed may not be reduced to 25% of the maximum speed. A PWM signal is at a fixed frequency. A very low PWM fr ...
... Since the motor is at full voltage during the ON pulse, the motor runs at full torque during the ON pulse. A 25% duty cycle reduces the power applied to the motor close to 25%, yet the speed may not be reduced to 25% of the maximum speed. A PWM signal is at a fixed frequency. A very low PWM fr ...
Optimal Design for Resonant Power Transformer
... to the soft switching mode ones using the LLC resonant transformer. This is a new technique that converts the AC line power to the setting voltage as we expect, also analyses, and applies the characteristic of the LLC resonant transformer to get the optima design. Various kinds of characters of the ...
... to the soft switching mode ones using the LLC resonant transformer. This is a new technique that converts the AC line power to the setting voltage as we expect, also analyses, and applies the characteristic of the LLC resonant transformer to get the optima design. Various kinds of characters of the ...
Inverter-Y Training
... When the indoor coil temperature < 2°C, the compressor starts to drop the frequency. This protection is activated when: - Indoor coil temperature < 0°C for more than 180s. Compressor will stop, OD fan stop after 30s and indoor fan can only run at super low fan speed. The unit can only be restarted a ...
... When the indoor coil temperature < 2°C, the compressor starts to drop the frequency. This protection is activated when: - Indoor coil temperature < 0°C for more than 180s. Compressor will stop, OD fan stop after 30s and indoor fan can only run at super low fan speed. The unit can only be restarted a ...
CI23521526
... Rectifires directly give DC output. Traditionally ac and dc conversion systems are used separately for ac and dc loads. Currently no system is available to get AC and DC output simultaneously. Novel concept of multiple converter means that it can give AC and DC output simultaneously using single con ...
... Rectifires directly give DC output. Traditionally ac and dc conversion systems are used separately for ac and dc loads. Currently no system is available to get AC and DC output simultaneously. Novel concept of multiple converter means that it can give AC and DC output simultaneously using single con ...
Utility frequency
The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the frequency of the oscillations of alternating current (AC) in an electric power grid transmitted from a power plant to the end-user. In large parts of the world this is 50 Hz, although in the Americas and parts of Asia it is typically 60 Hz. Current usage by country or region is given in the list of mains power around the world.During the development of commercial electric power systems in the late 19th and early 20th centuries, many different frequencies (and voltages) had been used. Large investment in equipment at one frequency made standardization a slow process. However, as of the turn of the 21st century, places that now use the 50 Hz frequency tend to use 220–240 V, and those that now use 60 Hz tend to use 100–127 V. Both frequencies coexist today (Japan uses both) with no great technical reason to prefer one over the other and no apparent desire for complete worldwide standardization.Unless specified by the manufacturer to operate on both 50 and 60 Hz, appliances may not operate efficiently or even safely if used on anything other than the intended frequency.