Title :
Peak demand reduction strategy for energy conversion in X-ray systems
Author :
Rodríguez, H. ; Cárdenas, V. ; Núñez, C.
Author_Institution :
Eng. Dept., Univ. Autonoma de San Luis Potosi, San Luis Potosi, Mexico
Abstract :
Several commercial and industrial equipment, like automotive welders and medical exposition systems, take energy from the AC mains in a discontinuous way. Due to intermittent operation of these, a significant peak of energy has to be delivered from the mains in a short period of time. A PWM rectifier is used instead the typical three-phase diode or SCR rectifier to control the storage and deliver of energy during an operative cycle. In this paper an improved use of the energy for X-ray system is presented. Control based in Input-output linearization for dq current components is incorporated as control strategy. A decoupled, suitable for power control is obtained. Unitary Power Factor (PF) and low Total Harmonic Current Distortion (THDI) are guaranteed. Graphic simulation results are presented.
Keywords :
PWM rectifiers; X-ray apparatus; direct energy conversion; harmonic distortion; medical control systems; power control; power factor; PWM rectifier; SCR rectifier; THDI; X-ray system; automotive welder system; dq current component; energy conversion; input-output linearization; medical exposition system; peak demand reduction strategy; power control; three-phase diode; total harmonic current distortion; unitary PF; unitary power factor; Capacitors; Discharges; Mathematical model; Pulse width modulation; Reactive power; Rectifiers; Voltage control; Input-output Linearization; PWM rectifier; Peak of energy; Power Factor; Total Harmonic Distortion; X-ray equipment;
Conference_Titel :
Electrical Engineering Computing Science and Automatic Control (CCE), 2011 8th International Conference on
Conference_Location :
Merida City
Print_ISBN :
978-1-4577-1011-7
DOI :
10.1109/ICEEE.2011.6106603
