Assignment Task
Question 1
In the power conversion architecture shown in 1:
find the maximum power at the output and the maximum current at the input of each converter. Converter I should be capable of keeping the 400V bus constant even when the load power is maximum, and the batteries are being charged at full power.
Question 2
Using the circuit in 2 and the following parameters:
Viin= √2 110 sin(ωt) V; ω = 2π60 rad/sec
N1: N2 = 2: 1
R1 = 1 Ω, R2 = 1 Ω, R3 = 75 Ω
L = 5 mH
a. Calculate magnitude and phase of the input
b. Calculate the value of the capacitor, to be added in parallel with the input source, required to obtain a unity power
c. Simulate the circuit of Fig. 2 in PLECS for the scenarios posed in points a) and b). Plot input voltage and current in time domain (along with any other variables you consider relevant). Verify your calculations match the results obtained in.
Question 3
Illustrates an ideal 3-Phase rectifier with the following parameters:
Va(rms) = Vb(rms) = Vc(rms) = 120 V
ω = 2πππ; ππ = 60 Hz
R = 10Ω
a. Calculate the average and peak-to-peak values of the output voltage and
b. Simulate the circuit in 3 using PLECS and plot the output voltage, output current and the current in each diode.
c. Explain what you observe from the What diodes are conducting at each portion of time? What is the conduction angle for each diode? Explain why.
