Effects of balanced and unbalanced voltage sags on DC adjustable-speed drives

Autor:	Joaquin Pedra, Alfredo de Blas, Joan Gabriel Bergas, F. Corcoles, Luis Sainz
Rok vydání:	2008
Předmět:	Engineering business.industry Energy Engineering and Power Technology Dc drive DC motor Rectifier Control theory Voltage sag Jump Commutation Sensitivity (control systems) Electrical and Electronic Engineering business Voltage
Zdroj:	Electric Power Systems Research. 78:957-966
ISSN:	0378-7796
DOI:	10.1016/j.epsr.2007.07.007
Popis:	This paper analyzes the sensitivity of DC adjustable-speed drives to balanced and unbalanced voltage sags. The influence of sag type, depth, duration and phase-angle jump on DC drives is studied. The control of the DC drive has been taken into account to understand drive behavior in the presence of voltage sags. Two working modes of the DC motor are considered in the study: as a consumer load and as a regenerative load. When the DC motor works as a consumer load, the study shows that sag type and depth have a significant influence on drive behavior. However, the voltage sag can be ridden through if the rectifier firing angle is set correctly by the control. When the DC motor works as a regenerative load, the study shows the consequences of the three-phase rectifier commutation failure due to the voltage sag.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d3d9ffe54e3002e6caf375a38d21313a https://doi.org/10.1016/j.epsr.2007.07.007 Zobrazit plný text záznamu Full Text from ScienceDirect