Three-Phase Rectifiers (0)

Tallinn University of Technology
Department of Electricl Power Engineering and Mechatronics

Report on Exercises 3

on Power Electronics

Three-Phase Rectifiers

Tallinn 2017

Given parameters:

Output voltage , Ud = 10 V
Input frequency, fin = 50 Hz
Load resistance , Rload = 70 kOhm

Calculations:

M3 rectifier :
B6 rectifier :
Table 1. Value comparison table for M3 rectifier.
Parameter
Calculated
Measured
Error
Ud, V
10
9.92
0.8
Id, mA
0.14
0.14
0
Upeak, V
12.09
12.1
0.01
Number of pulses in period
3
3
0
Table 2. Value comparison table for B6 rectifier.
Parameter
Calculated
Measured
Error
Ud, V
10
8.86
1.14
Id, mA
0.14
0.13
0.01
Upeak, V
6.05
7.8
1.75
Number of pulses in period
6
6
0
Fig. 1 M3 rectifier Circuit diagram
Fig. 2 M3 rectifier three-phase input system
Output Current (A) (Red)
Fig. 3 M3 rectifier output current and voltage traces
Fig. 4 B6 rectifier circuit diagram
Output Current (A) (Red)
Fig. 5 B6 rectifier output current and voltage traces

Conclusions:

Learned the about three-phase rectifier working principles and Basic components. Had the chance to build a simple M3 and B6 three phase rectifier in the simulation workspace and measure different parameters. Also calculated the same parameters and compared the result . Good overview of the workings of a diferent three-phase rectifiers.