Embedded solutions to protect textile processes against voltage sags

Variable speed drives (VSD) are reported to be very susceptible to voltage sags. In textile industry processes, such as extrusion and weaving, many synchronised VSDs are installed, reducing the reliability of the processes under voltage sag conditions. This paper evaluates the influence of embedded mitigation methods on the voltage tolerance curves of extrusion and weaving units using theoretical considerations as well as practical measurements. A brief cost-benefit analysis of the installation in these two textile processes is given.