Title :
A single stage optocoupler-less buck-boost PFC driver for LED lamp at universal AC mains
Author :
Singh, Bawa ; Shrivastava, Ashish ; Chandra, Aniruddha ; Al-Haddad, Kamal
Author_Institution :
Dept. of Electr. Eng., I.I.T. Delhi, New Delhi, India
Abstract :
This paper deals with a single-stage PFC (Power Factor Corrected) buck-boost converter based low power LED (Light Emitting Diode) lamp driver for general purpose lighting. In the proposed circuit, a buck-boost converter is operated in CCM (Continuous Conduction Mode) with PSCR (Primary Sensing Current Regulation) using feed forward current control scheme to improve power quality at universal AC mains. A design procedure of proposed LED driver is illustrated and its simulated performance is demonstrated for improvement in various power quality indices in Matlab/Simulink environment for a 220 V, 50 Hz input AC mains. In order to validate the design, an optocoupler-less buck-boost PFC converter based LED driver is developed with low component count and low cost and tested for a load of 13 W with multiple LEDs connected in series. Each LED has a forward voltage of 3.1 V, forward rated current of 325 mA and power rating of 1 W. The measured power quality indices are observed well within the IEC-61000-3-2 norms for class C equipments.
Keywords :
IEC standards; LED lamps; driver circuits; electric current control; feedforward; lighting control; power factor correction; power supply quality; CCM; IEC-61000-3-2 standard; LED lamp driver; Matlab; PSCR; Simulink; class C equipment; continuous conduction mode; current 325 mA; feed forward current control scheme; frequency 50 Hz; general purpose lighting; light emitting diode; optocoupler less buck-boost PFC convertor; power 13 W; power factor correction; power quality indices; primary sensing current regulation; universal AC main; voltage 220 V; voltage 3.1 V; High intensity discharge lamps; Light emitting diodes; Reactive power; Voltage control; Improved Power Quality Converter; LED Lamp Driver; Power Factor Correction (PFC); Primary Sensing Current Regulation (PSCR); Total Harmonic Distortion (THD); Universal AC Mains;
Conference_Titel :
Industry Applications Society Annual Meeting, 2013 IEEE
Conference_Location :
Lake Buena Vista, FL
DOI :
10.1109/IAS.2013.6682508