Question

What is soft switching and hard switching?

Answer 1

Soft switching is a possible way of reducing losses in power electronicswitches. The expression "soft switching" actually refers to the operation of power electronic switchesas zero-voltage switches (ZVS) or zero-current switches(ZCS).

A hard switch (HS) is a single switch (e.g. IGBT) with hard turn-on and turn-off switching behaviour (see Four Types of Switching Processes). Except for the theoretical case of pure ohmic load, it can only be used together with a neutral switch(diode) in a commutation circuit with minimum passive energy store.

Answer 2

Answer:

The terms “hard switching” and “soft switching” refer to the methods of switching based on the relationship of current and voltage during the turn-on and turn-off of the IGBT. ... Soft switching helps reduce the switching noise and loss because switching devices turn on and off at zero or nearly zero voltage or current.

Explanation:

ʜᴏᴘᴇ ʜᴇʟᴘ ᴜ xᴅ