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In December 2007, what at the time was the largest in North America, a solar voltaic power plant was activated at Nellis Air Force Base near Las Vegas, Nevada. Seventy-two 25-square-inch silicon photovoltaic solar cells, manufactured by SunTech Power Holdings of Jiangsu Province, China, are installed on each panel. There are 12 panels mounted on 5,821 SunPower T20 single-axis sun trackers. The single-crystal solar cells have front-side metallization and a back-side oxide passivation layer to minimize unwanted hole-electron recombination. A sunlight-to-electricity conversion efficiency of 24.2 percent is achieved. a) Calculate the maximum DC electrical power generated by the total solar PV array. b) Fifty-two Xantrex GT250 three-phase DC-AC inverters with 96% efficiency are used to convert the output to AC at 60 Hz. Compute the output power due to maximum sunlight. c) The ratio of average to peak power generated is called the capacity factor. For the Nellis Plant this factor is 22%. Calculate the annual average generation of AC energy output from the Nellis solar power plant. d) If it costs $500,000 per year to amortize the construction, perform maintenance and operate the Nellis plant, compute the nonprofit electricity rate to be billed to the user in cents per kilowatt-hour used. e) If the nominal AC 3? output line-to-line voltage is 480 Vac rms, and the nominal line current is 300 A rms, calculate the nominal average AC output power from each inverter and also calculate the total AC output power from the plant. f) For the inverter AC output power found in part (e) and an inverter DC input current of 540 amperes, compute the DC voltage input to each inverter.
A current amplifier with R=9 kohm Ro=1 kohm and Ais=100 is connected between a 8 V voltage source with a source resistance of Rs=1 Kohm and a load resistance of RL=9 Kohm.
When the starter motor, which draws 90A, is running the terminal voltage drops to 11V. What is the internal resistance of the battery What percentage of the chemical power is delivered to the starter motor
The return current is through the outer conductor, which consists of an infinitely thin cylindrical shell of radius b. Use Ampere's law to calculate the magnetic field intensity everwhere.
a) construct the straight-line Bode plot of the gain. Is this a low-pass, high-pass, bandpass, or bandstop function b) Use the straight-line plot to estimate the maximum gain and the frequency at which it occurs.
It is decided to apply a Fast Hopping (FH) scheme on the above ASK system. The hopping is made over 12 channels of 100 kHz; or over 1.2 MHz bandwidth. The ASK signal hops 6 bands per bit period. Now a strong jammer randomly jams one of the 12 FH c..
The instantaneous power p into a one port containing resistors and inductors has maximum value 100(1+sqrt2) W and minimum value 100(1-sqrt2)W. (note that instantaneous power is measured in W, and it contains various contributions
Project on LFC using tuned FOPID. I have considered a two area model. Need help regarding implementation of GA MATLAB code for a two area interconnected power system for LOAD FREQUENCY CONTROL.
in a hydroelectric generating station the difference in level between ,the water surface and turbine driving the generators is 425 meters.if 1250 liters of water is required to generate 1 kwh of electric energy.find the overall efficiency
The normalized lowpass filter with a cutoff frequency of 1 rad/sec is given as Hp(s) 1/s+1. Use Hp(s) and the BLT to obtain an corresponding IIR digital high passs filter with a cutoff of 30 Hz, assuming a sampling rate of 200 hz,
Using verilog hardware descriptional language or vhdl create a non-expandable dataflow description of a 2-bit magnitude comparator, from that create a behavioral dataflow description to create an expandable 2-bit magnitude comparator
Draw an accurate phasor diagram of the four voltages from the R-L-Ccircuit. Derive three expressions for the phase angle between Vsand Vr from the phasor diagram.
A 23-kVA, 2300/230-V, 60-Hz, step-down transformer has the following resistance and leakage-reactance values: R1 = 4 ohm, R2 = 0.04 ohm, Xl = 12 ohm, and X2 = 0.12 ohm. The transformer is operating at 75% of its rated load.
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