Blanking Time

Purpose

Generate commutation delay for 2-level inverter bridges

Library

Control / Modulators

Description

This block generates a blanking time for 2-level inverter bridges so that the turn-on of one switch is delayed with respect to the turn-off of the other switch in the same inverter leg.

The input s is a switching function with the values \(-1\) and \(1\) generated by a 2-level modulator such as the Symmetrical PWM generator. The values of the output s’ are either \(-1\) (lower switch turned on), \(0\) (both switches off) or \(1\) (upper switch on). If the input is a vector, the output is also a vector of the same width.

Parameters

Delay time

The delay in seconds \((\mathrm{s})\) between the turn-off of one switch and the turn-on of the other switch in an inverter leg.