Numerical Solutions to EEEN60631
Analysis of Electrical Power and Energy Conversion Systems
Question 1
a) (i) Not numerical.
(ii) Not numerical.
(iii) ω = 2096 Tads−1 (334 Hz), ζ = 0.42.
(iv) a = 3.75, b = 0.95.
b) Not numerical.
Question 2
a) (i) Not numerical
(ii) Breakpoints at 236 Hz and 470 Hz.
(iii) Sketch required, peak output change of 0.94 A,period of 0.165 ms.
(iv) 15%.
(v) Bode plot sketch. Starts at 134.6 dB at 0.1rad/s. Then -20dB/decade due to pole at 0 rad/s. Then -40dB/decade from 8.125 rad/s due to pole. Then -20dB/decade from 1485 rad/s due to zero.
Question 3
a) 60.188 Hz
b) Not numerical.
c) Not numerical.
d) 2947 A.
e) zgrid = 0.02912 + j0.3494 pu.
Question 4
a) (i) 270, (ii) 619, (iii) 349, (iv) 79, (v) 611, (vi) 349.
b)
(ii)
c) (i) 69.50 MW
(ii) 94.60 MW