11) the supply frequency; 12) the rectifier pulse number;
The voltage waveforms shown below are obtained from a three-phase power rectifier used in an ESKOM application.
The rectifier output before the inductive filter is denoted by VL and the load voltage after the inductive filter by Vo.
Ignore any diode losses and consider a load resistance of 12.7 Ω. Analyse the waveforms and specify / calculate,
11) the supply frequency;
12) the rectifier pulse number;
13) the rectifier average output voltage;
14) the average output current;
15) the r.m.s. value of the output current;
16) the r.m.s. value of the harmonics present in the output current;
17) the dc current rating of the rectifier diodes;
18) the r.m.s. current rating of the rectifier diodes;
19) the peak repetitive reverse voltage rating of the rectifier diodes;
20) the peak repetitive forward current rating of the rectifier diodes;
21) the line-line r.m.s. voltage of the three-phase supply;
22) the rectification efficiency of the converter;
23) the converter transformer utilisation factor;
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