Power quality improvement in a low-voltage DC ceiling grid powered system

被引：8
|
作者：
Nallusamy, Subashini [1 ]
Velayutham, Dharmalingam [2 ]
Govindarajan, Uma [3 ]
Parvathyshankar, Deivasundari [4 ]
机构：
[1] SASTRA Univ, Dept Elect & Elect Engn, Thanjavur, India
[2] MAM Sch Engn, Dept Elect & Elect Engn, Tiruchirappalli, India
[3] Anna Univ, Coll Engn, Dept Elect & Elect Engn, Madras 600025, Tamil Nadu, India
[4] KCG Coll Technol, Dept Elect & Elect Engn, Madras, Tamil Nadu, India
来源：
IET POWER ELECTRONICS | 2015年 / 8卷 / 10期
关键词：
power factor correction; power grids; AC-DC power convertors; power supply quality; light emitting diodes; lighting; voltage control; hysteresis; rectifying circuits; PI control; harmonic distortion; power quality improvement; low-voltage DC ceiling grid powered system; low-voltage DC grid; light emitting diode; LED lighting system; DC load; residential applications; PFC; three phase modular AC-DC converter; LVDC grid; unbalanced supply voltage condition; balanced supply voltage condition; single phase boost converter module; diode rectifier; DC output voltage regulation; proportional-integral controller; current wave shape; hysteresis controller; instantaneous symmetrical component theory; equal current criteria; reference current template generation; current waveform; sinusoidal voltage; dSPACE1104; processor; total harmonic distortion; unity power factor; load variations; FACTOR RECTIFIER; CUK RECTIFIER; SINGLE-STAGE; 3-PHASE; CONVERTER; DESIGN; IMPLEMENTATION; OPERATION; BALANCE;
D O I：
10.1049/iet-pel.2014.0715
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Power quality is an important issue in low-voltage DC (LVDC) grids which drives light-emitting diode lighting system and many other DC loads in residential applications. The requirement of high-quality power to the lighting system necessitates power factor correction (PFC). This study presents a three-phase modular AC-to-DC converter with a simple controller for PFC in LVDC grids under balanced and unbalanced supply voltage conditions. The proposed circuit consists of three separate single-phase boost converter modules. Each module includes a diode rectifier at the front end, followed by a boost converter. The main advantage of this converter is module loss operation where the DC supply given to the lighting system and other DC loads will be continued even in case of failure of one module. The 24 V DC output voltage is regulated using an outer proportional-integral controller and the input current wave shape in each phase is improved by three individual hysteresis controllers. The controller works successfully in tracking the reference voltage changes in order to vary the regulated DC output voltage. The effectiveness of the controller has been verified by the results obtained through MATLAB/SIMULINK. A prototype model has been developed to validate this system and tested using dSPACE1104 processor.
引用
收藏
页码：1902 / 1911
页数：10
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