Question

Calculate the fundamental component of source current in 1-Φ Full wave bridge rectifier for load(Highly inductive) current=3.14 A.

(a) 2.82 A

(b) 1.45 A

(c) 3.69 A

(d) 4.78 A

The question was posed to me in final exam.

This question is from Solid-State Switching Circuits in chapter Introduction to Solid-State Switching Circuits of Electric Drives

Answer 1

Right choice is (a) 2.82 A

The explanation: The fundamental component of source current in 1-Φ Full wave bridge rectifier is 2√2Io÷π. It is the r.m.s value of the fundamental component. Is1(r.m.s) = 2√2Io÷π=2√2=2.82 A.