Question

Which one of the following load is suitable for lagging power factor load in Single phase Half-bridge inverter?

(a) C load

(b) R-L-C overdamped

(c) R-L-C underdamped

(d) L-C load

The question was asked during an interview for a job.

The question is from Solid-State Switching Circuits in division Introduction to Solid-State Switching Circuits of Electric Drives

Answer 1

Right choice is (b) R-L-C overdamped

The best I can explain: R-L-C overdamped loads are generally lagging power factor loads. They require forced commutation. Anti-Parallel diodes do not help in the commutation process.