AC induction - final notes
... - Volt/hertz control usually applied to maintain torque while speed is varied. - voltage supply are obtained from 3-phase inverter or cycloconverters - as for very large power applications (locomotives , cement mills) cycloconverters are used. - As the frequency reduced, β decreases, thus the slip a ...
... - Volt/hertz control usually applied to maintain torque while speed is varied. - voltage supply are obtained from 3-phase inverter or cycloconverters - as for very large power applications (locomotives , cement mills) cycloconverters are used. - As the frequency reduced, β decreases, thus the slip a ...
the asynchronous generator in small power plants
... period. There are not many machines combining real "continuous operation" and "varying shaft output" so perfectly like hydroelectric generators. It will still be explained that a special design of the machine and accepting of a higher cost price will pay off soon. It was mentioned in paragraph 2, th ...
... period. There are not many machines combining real "continuous operation" and "varying shaft output" so perfectly like hydroelectric generators. It will still be explained that a special design of the machine and accepting of a higher cost price will pay off soon. It was mentioned in paragraph 2, th ...
Time-Base Oscillator for RTC ICs
... Load Capacitance For a parallel resonant calibrated crystal, the crystal manufacturer specifies the load capacitance at which the crystal will “parallel” resonate at the nominal frequency. As the graph in Figure 3 displays, increasing the effective load capacitance by hanging additional capacitors o ...
... Load Capacitance For a parallel resonant calibrated crystal, the crystal manufacturer specifies the load capacitance at which the crystal will “parallel” resonate at the nominal frequency. As the graph in Figure 3 displays, increasing the effective load capacitance by hanging additional capacitors o ...
Integer N Frequency Synthesizer using Phase Lock Loop
... diverse.There are many other aspects that can be combined in the design to achieve better performance and more powerful results.The PLL for high performance and RF application has been designed using 250nm CMOS technology and simulated on EDA TANNER 13.0.The proposed VCO has been designed for gettin ...
... diverse.There are many other aspects that can be combined in the design to achieve better performance and more powerful results.The PLL for high performance and RF application has been designed using 250nm CMOS technology and simulated on EDA TANNER 13.0.The proposed VCO has been designed for gettin ...
Scheme and Syllabus Of Master of Technology (Power Engineering
... There is a need of qualified faculty (Ph. D. and M. Tech) in various fields of Engineering and Technology. Punjab does not have many institutions offering PG Courses in Engineering and Technology. Keeping this fundamental need in mind, the University has ventured in establishing regional centres in ...
... There is a need of qualified faculty (Ph. D. and M. Tech) in various fields of Engineering and Technology. Punjab does not have many institutions offering PG Courses in Engineering and Technology. Keeping this fundamental need in mind, the University has ventured in establishing regional centres in ...
Fluke 1760 Three-Phase Power Quality Recorder Topas
... In case of a power supply failure an internal battery maintains the supply for up to 40 minutes. Afterwards, or in case of discharged accumulators the Fluke 1760 is turned off and continues the measurements with the latest settings as soon as the supply voltage returns. The battery can be replaced b ...
... In case of a power supply failure an internal battery maintains the supply for up to 40 minutes. Afterwards, or in case of discharged accumulators the Fluke 1760 is turned off and continues the measurements with the latest settings as soon as the supply voltage returns. The battery can be replaced b ...
MAX9986AEVKIT.pdf
... 2) Connect 3dB pads to the DUT ends of each of the three RF signal generators’ SMA cables. This padding improves VSWR and reduces the errors due to mismatch. 3) Use the power meter to set the RF signal generators according to the following: • RF signal source: -5dBm into DUT at 910MHz (this will be ...
... 2) Connect 3dB pads to the DUT ends of each of the three RF signal generators’ SMA cables. This padding improves VSWR and reduces the errors due to mismatch. 3) Use the power meter to set the RF signal generators according to the following: • RF signal source: -5dBm into DUT at 910MHz (this will be ...
MAX9993 High-Linearity 1700MHz to 2200MHz Down- Conversion Mixer with LO Buffer/Switch General Description
... The MAX9993 high-linearity down-conversion mixer provides 8.5dB of gain and +23.5dBm IIP3, with a 9.5dB noise figure (typ). Integrated baluns and matching circuitry allow 50Ω single-ended interfaces to the RF and LO ports. A single-pole, double-throw (SPDT) LO switch provides 50ns switching time bet ...
... The MAX9993 high-linearity down-conversion mixer provides 8.5dB of gain and +23.5dBm IIP3, with a 9.5dB noise figure (typ). Integrated baluns and matching circuitry allow 50Ω single-ended interfaces to the RF and LO ports. A single-pole, double-throw (SPDT) LO switch provides 50ns switching time bet ...
11. DWG Report to ROS August 2007
... the new models with the gas turbine units, in order to represent their frequency dependent behavior. Members will investigate this, and share issues they encounter in their own systems. We also discussed the use of the GGOV1 model, and other governor modeling ...
... the new models with the gas turbine units, in order to represent their frequency dependent behavior. Members will investigate this, and share issues they encounter in their own systems. We also discussed the use of the GGOV1 model, and other governor modeling ...
W. Inam, K.K. Afridi and D.J. Perreault, “Variable Frequency Multiplier Technique for High Efficiency Conversion Over a Wide Operating Range,” 2014 IEEE Energy Conversion Congress and Exposition , Sept. 2014.
... cannot be optimally designed. Furthermore, circulating currents may increase proportionally as load is decreased resulting in higher losses at light loads. With phase shift control, operation over a wide range is likewise challenging. In many resonant converters, when two legs of the inverter are ph ...
... cannot be optimally designed. Furthermore, circulating currents may increase proportionally as load is decreased resulting in higher losses at light loads. With phase shift control, operation over a wide range is likewise challenging. In many resonant converters, when two legs of the inverter are ph ...
DIAGNOSTIC NEWS CSA for Motor Rotor Fault Detection
... losses should not increase by more than about 5 per cent. If the core loss increases by more than 5 per cent, the service shop may have done the “burn out” at too high a temperature, and thus damaged the insulation between the steel laminations. 10. If a motor has been retrofitted with an inverter t ...
... losses should not increase by more than about 5 per cent. If the core loss increases by more than 5 per cent, the service shop may have done the “burn out” at too high a temperature, and thus damaged the insulation between the steel laminations. 10. If a motor has been retrofitted with an inverter t ...
Aalborg Universitet Resonant-inductor-voltage feedback active damping based control for grid-connected
... frequency. Compare with the LCL-filter, the LLCL-filter has an extra resonant inductor which is possible also be sensed to attenuate the resonance. In this paper, resonantinductor-voltage-feedback active damping method is analyzed for the LLCL-filter using integral feedback coefficient considering t ...
... frequency. Compare with the LCL-filter, the LLCL-filter has an extra resonant inductor which is possible also be sensed to attenuate the resonance. In this paper, resonantinductor-voltage-feedback active damping method is analyzed for the LLCL-filter using integral feedback coefficient considering t ...
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.