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Assignment Problems with Solutions for Power Electronics | ECE 481, Assignments of Electrical and Electronics Engineering

The University of Tennessee (UT)Electrical and Electronics Engineering
Prof. Leon Tolbert

Material Type: Assignment; Professor: Tolbert; Class: Power Electronics; Subject: Electrical And Computer Engr; University: University of Tennessee - Knoxville; Term: Fall 2009;

Typology: Assignments

Pre 2010

Uploaded on 08/26/2009

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Download Assignment Problems with Solutions for Power Electronics | ECE 481 and more Assignments Electrical and Electronics Engineering in PDF only on Docsity!

28-1 Exercise 28 2 Quadrant, de-de Converter YF Nominal Values: Vd =200V VEMF= 136V Ra = 0.37 Q La= 1.5 mH Tofavg) = 10 A fs = 20 kHz duty-ratio Dy of Tay = 0.708 A (. Veontrol = 0.416V with V tri = 1.0V) Problems 1. Obtain the following waveforms using Two_Quad: (@) Yo, ip and pot) = Voio (b) Vo and ig Calculate peak-to-peak ripple in ip. By means of Fourier analysis, calculate the average value and the harmonic components in vo. Obtain the rms value of the ripple in vo and check it with the analytical calculations. By means of Fourier analysis, calculate the average value of id and the rms value of the ripple. In the regenerative mode, the power flows from the load to the de-bus at Vq. Let VEMF= 136¥V, Ia(avg) = 10A in the reverse direction, and Vo(avg) = 136 - 0.37x10 = 132.3 V. Therefore, duty-ratio D1 of TA1 = 0.66.