Question

can you calculate and explain why? thanks

A single-phase thyristor rectifier as 50 Hz source. The rectifier delivers a DC voltage of 150 V to a highly inductive depicted in Figure 1 is fed from a 220 V rms, 1. load with a resistive value of 10 Q. SCR, T SCR2 + is Vo SCR3 SCR T Figure 1

Answer 1

Re cti fien Single phase Inductive Chighly load R- L Load means I Constant [Ripple free out put Current V =220V a d = 30 2 tt od 30 Triggering Ti Ty - T2T2 T, T wt SourCe Cument fundamental k displacement an d i Input pow en factor

distorition DiSplace ment factor X currart IPf = factor whe ne ang le blw andis Cos() Displace ment factor Df= Cos Ist Current diStor-tion factoy 1 Y -T y Yms So unce curren t = af .1 D Lfundamntal Component is 7 2 So O.9 O-9 Cos Pf- [Cos x O.9 Cosa input Power factor in load) [bigh inductive I =Constant d- 30 2V (2 20)2x52 CoS 30 = CoS& TT Vo 17.IS3A Con stant average Value Rms Va lue s SO 17. IS3 A Yms Volt age Yating PTV Peak Invers Voltage Means 2 x 2 20 311.12 V

Rating Yating Rms Curent Current Through any of SCR CuYrent have to draw We Ti TCt /7-153 Yating ceach Thyristor) Valle 12. 12 A kVA Rating TUF 0-8106 Bridge Rectifien7 Tu F= I SISXTO7 I53 0. 8106 3629.1 VA 3.629 kVA