標題: DSP-embedded UPS controller for high-performance single-phase on-line UPS systems
作者: Lai, CH
Tzou, YY
電控工程研究所
Institute of Electrical and Control Engineering
關鍵字: on-line UPS;digital signal processor (DSP);digital control;software current control;nonlinear pulsewidth compensation;digital power factor control;total harmonic distortion (THD)
公開日期: 2002
摘要: This paper proposes a DSP-controlled transformerless common-neutral single-phase on-line UPS with balanced charging/discharging control. All the control functions for an on-line UPS, which includes power-on start-up control, input stage power factor control, battery charging and boosting control, output stage ac voltage regulation, and shut-down control, were realized by using a single-chip DSP controller. A multiple rate digital controller generates all the PWM control signals for the power stage by using a set of detected feedback signals. Software current control scheme with nonlinear pulsewidth compensation has been developed to eliminate the nonlinearity caused by the dead-lock protected PWM converters. A nonlinear digital control scheme with lower switching frequency has been developed for the power factor control of the ac-dc converter. Computer simulation and experimental results have been given to verify the proposed digital control scheme. The constructed DSP-controlled UPS system can achieve fast dynamic response for nonlinear loads and high power factor under various loading conditions.
URI: http://hdl.handle.net/11536/18757
ISBN: 0-7803-7474-6
ISSN: 1553-572X
期刊: IECON-2002: PROCEEDINGS OF THE 2002 28TH ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY, VOLS 1-4
起始頁: 268
結束頁: 273
顯示於類別:會議論文