Title :
Mitigation of power supply disturbance in electronic loads
Author :
Basu, K.P. ; Nor, Normiza Mohd ; Hafidz, S.A.
Author_Institution :
Fac. of Eng., Multimedia Univ., Cyberjaya, Malaysia
Abstract :
An alternate power supply guarantees the performance of loads during voltage disturbances in the normal supply. It is proposed to implement a quick change over of the power supply of single-phase electronic loads from the faulty phase to a healthy phase in a 3-phase system. Supercapacitors maintain the dc voltage during the period of disturbance. A zigzag transformer may also be used to rebuild a balanced 3-phase load voltage by isolating the faulty phase from the load. Both the 3-phase and single-phase loads may be supplied with the rated voltage during the period of disturbance. Use of a static transfer switch reduces the change over time to 0.02 second.
Keywords :
electricity supply industry; power supply quality; supercapacitors; 3-phase load voltage; 3-phase loads; DC voltage; electronic loads; power supply disturbance mitigation; single-phase electronic loads; supercapacitors; time 0.02 s; voltage disturbances; voltage sags; zigzag transformer; Capacitors; Circuit faults; Impedance; Power supplies; Switches; Variable speed drives; Voltage fluctuations; Short-time power interruption; alternate power supply; power failure; super capacitor; voltage sag; zero sequence impedance; zigzag transformer;
Conference_Titel :
Energy, Automation, and Signal (ICEAS), 2011 International Conference on
Conference_Location :
Bhubaneswar, Odisha
Print_ISBN :
978-1-4673-0137-4
DOI :
10.1109/ICEAS.2011.6147127
