Question

Short circuit problem is severe in case of Voltage source inverter.

(a) True

(b) False

I had been asked this question during an interview.

I'd like to ask this question from Solid-State Switching Circuits in portion Introduction to Solid-State Switching Circuits of Electric Drives

Answer 1

The correct answer is:

(a) True

Explanation:

A short circuit problem is indeed more severe in the case of a Voltage Source Inverter (VSI). This is because a VSI has a fixed voltage output, and if a short circuit occurs at the output of the inverter, the current can increase rapidly, potentially damaging the inverter and the connected load. The design of VSIs typically involves more complex protection mechanisms to handle short circuits and prevent damage, as the inverter is directly controlling the voltage applied to the load.

In contrast, a Current Source Inverter (CSI) controls the current and can better limit short-circuit currents, making the short circuit problem less severe compared to VSIs.

Therefore, the statement is True.