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Consider three level converter it suppllies 600Vrms line to line, 60Hz, balanced 3 phase fundamental voltage. each dc link capacitor is 2.0 kV.
1.Using sine triangle modulation at 1.8kHz, determine and plot 60Hz one complete cycle of line to line load voltages. Use of MathCAD is highly recommeded.
2. Using space vector modulation of 1.8kHz switching cycle frequency, determine appropriate vectors and switching times for a single switching interval when the output of phase a is
Va(t)=60*2^0.5*cos(2.x.f.t)*V
The balanced 60Hz waveform sample that we must modulate is the point where t=4.4ms. The DC voltage from rail to rail is 300V. assume the q axis and a axis are in same direction. The use of mathCAD is recommended.
Analyse and Model Engineering Situations and Solve Engineering Problems using Laplace Transform
The line is terminated in a load RL = 25 ohm. Use the bounce diagram to plot V(t) at a point midway along the length of the line from t = 0 to t = 25 ns.
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