Publication: Three-phase PWM-switched autotransformer voltage-sag compensator based on phase angle analysis
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Date
2011
Authors
Mansor M.
Rahim N.A.
Journal Title
Journal ISSN
Volume Title
Publisher
Korean Institute of Power Electronics
Abstract
Many voltage sag compensators have been introduced, including the traditional dynamic voltage restorer (DVR), which requires an energy storage device but is inadequate for compensating deep and long-duration voltage sags. The AC-AC sag compensators introduced next do not require a storage device and they are capable of compensating voltage sags. This type of compensator needs an AC-AC converter to regulate the output voltage. Presented in this paper is a three-phase PWM-switched autotransformer voltage sag compensator based on an AC-AC converter that uses a proposed detection technique and PWM voltage control as a controller. Its effectiveness and capability in instantly detecting and compensating voltage sags were verified via MATLAB/Simulink simulations and further investigated through a laboratory prototype developed with a TMS320F2812 DSP as the main controller.
Description
Keywords
Peak detection , RMS detection , Voltage sag , Voltage sag compensator , Voltage sag detection , AC-AC power converters , Electric energy storage , MATLAB , Power converters , Voltage control , Voltage regulators , AC-AC converters , Dynamic voltage restorer (DVR) , Matlab/Simulink simulation , Output voltages , Peak detection , Voltage sag compensator , Voltage sag detections , Voltage sags , Electric autotransformers