Power electronics

Assigment 1:

Figure 1. Controlled rectifier with RL load;

Figure 2. Vo and io waveforms

The controlled full-wave bridge rectifier of Fig 1. has a source of 230 Vrms at 50 Hz, R = 10 Ω, L = 30 mH, and α= 3x°. 1. Build the circuit of the controlled full-wave bridge rectifier in Fig.1 on the Matlab/Simulink

platform. The last digit of the student number will be taken for "x" in the value to be determined for the delay angle (α=3x). After the simulation is run, the output of load current (io) and load voltage (Vo) variation will be obtained as in example in Fig.2 and added to the assignment.

2. The extinction angle β is the angle at which the current returns to zero, is going to be calculated from Fig.2 you will get from your simulation.

3. After defined β value;

a. Determine an expression for load current, b. Determine the average load current, and c. Determine the power absorbed by the load.

Note1: For example if your student number is “1900000101” then you will get the the delay angle (α) as 31°. Note2: In student assignment must contain calculations, MATLAB/Simulink model and Plots.

İKÜ – EE0842 - Power Electronics Dr. Öğr. Üyesi Murat ÜNLÜ