Engineering, 24.06.2021 15:10, cindy978
A three-phase active rectifier is proposed for a wind power application. The wind generator delivers threephase output at voltages from 100 V to 500 V in proportion to speed, at frequencies of ∗ to ∗ . The power follows the cube of the speed and will be 1 MW when the output is 500 V. The active rectifier delivers energy from the generator output into a large capacitor bank. From there, an inverter processes it for grid connection. The capacitor bank is intended to maintain a nearly fixed de voltage. • Draw a circuit that meets this description. Isolation is not required. • What capacitor voltage do you suggest for this converter?Page 2 of 2 • What value of capacitor will keep the bus ripple below 5% peak to peak over the 100 V to 500 V stated input range? The inductors have been sized correctly for low ripple and good sinusoidal current tracking.
Answers: 3
Engineering, 04.07.2019 18:10, alyssabailey7545
Give heat transfer applications for the following, (i) gas turbines (propulsion) ) gas turbines (power generation). (iii) steam turbines. (iv) combined heat and power (chp). (v) automotive engines
Answers: 1
Engineering, 04.07.2019 18:10, agpraga23ovv65c
Carbon dioxide gas expands isotherm a turbine from 1 mpa, 500 k at 200 kpa. assuming the ideal gas model and neglecting the kinetic and potential energies, determine the change in entropy, heat transfer and work for each kilogram of co2.
Answers: 2
Engineering, 04.07.2019 18:10, jojoangelique13
The flow rate of air through a through a pipe is 0.02 m5/s. a pitot static tube is placed in the flow. the radius of the pitot static tube is 1 mm. assuming the flow to be steady and the air to be at 300k, calculate the difference in total and static pressure if the diameter of the pipe is: (a) d 0.1 m d 0.05 m (c) d 0.01 m
Answers: 2
A three-phase active rectifier is proposed for a wind power application. The wind generator delivers...
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