Title :
Line interactive UPS with the DSP based active power filter
Author :
Qin, Yu ; Du, 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 a low cost, line interactive UPS is presented in this paper. The UPS full bridge switch mode power converter is used as an active power filter to compensate load harmonic current when electric utility line voltage is within the UPS´s input voltage range. As 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 active power filter. Both computer simulation and experimental implementation show a excellent result of the system
Keywords :
active filters; bridge circuits; circuit analysis computing; circuit testing; compensation; digital signal processing chips; harmonic distortion; power convertors; power engineering computing; power filters; power supply quality; power system harmonics; switched mode power supplies; uninterruptible power supplies; DSP; active power filter; computer simulation; digital signal processor; electric utility line voltage; full bridge switch mode power converter; harmonic reference waveform; line interactive UPS; load harmonic current compensation; notch filter; performance; power quality; testing; waveform distortion; Active filters; Bridge circuits; Costs; Digital signal processing; Digital signal processors; Power harmonic filters; Power system harmonics; Switches; Uninterruptible power systems; Voltage;
Conference_Titel :
Telecommunications Energy Conference, 1995. INTELEC '95., 17th International
Conference_Location :
The Hague
Print_ISBN :
0-7803-2750-0
DOI :
10.1109/INTLEC.1995.498989
