Title :
A DSP based active power filter for line interactive UPS
Author :
Qin, Yu ; Shanshan
Author_Institution :
Controlled Power Co., Troy, MI, USA
Abstract :
A digital signal processor (DSP) based active power filter to compensate load harmonic current for low cost line interactive UPS is presented in this paper. The full bridge switch mode power converter of the UPS is used as an active power filter to compensate load harmonic current when utility line voltage is within the UPS´s input voltage range. The effectiveness of an active power filter depends on the quality of harmonic reference waveform, a DSP is used to realize a high quality, low distortion notch filter, resulting in a good performance of the active power filter. Both computer simulation and experimental implementation show excellent results
Keywords :
FIR filters; active filters; bridge circuits; digital signal processing chips; notch filters; power convertors; power filters; power system harmonics; switched mode power supplies; uninterruptible power supplies; DSP based active power filter; FIR filter; computer simulation; full bridge switch mode power converter; harmonic reference waveform; high quality filter; line interactive UPS; load harmonic current compensation; low distortion notch filter; uninterruptible power supplies; utility line voltage; Active filters; Bridge circuits; Costs; Digital signal processing; Digital signal processors; Power harmonic filters; Power system harmonics; Switches; Uninterruptible power systems; Voltage;
Conference_Titel :
Industrial Electronics, Control, and Instrumentation, 1995., Proceedings of the 1995 IEEE IECON 21st International Conference on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-3026-9
DOI :
10.1109/IECON.1995.483845
