A Flexible Mode Electrolytic Capacitor-Free LED Driver With High Efficiency Over a Wide Range of Input Voltage

The conventional ac-dc LED drivers fail to achieve high efficiency and optimized bus voltage over a wide range of input voltage. In order to obtain the better performance in high-line and low-line conditions simultaneously, a flexible mode LED driver is proposed. The proposed driver can operate in half-voltage input mode at high-line input to achieve relatively low-bus voltage and high efficiency. Meanwhile, the proposed driver can operate in full-voltage input mode at low-line input to cut down the diode loss and switch loss; thus, high efficiency can be also achieved. Meanwhile, zero-voltage switching characteristic of the active switches can be fulfilled in both modes. In addition, the proposed LED driver can achieve electrolytic capacitor free. The detail structure, operational principle, and design considerations are examined in detail. Finally, the feasibility and the effectiveness of the proposed LED driver are verified by an experimental prototype with rated power of 100 W.

[1]  Gun-Woo Moon,et al.  A New Control Method of Interleaved Single-Stage Flyback AC–DC Converter for Outdoor LED Lighting Systems , 2013, IEEE Transactions on Power Electronics.

[2]  Dianguo Xu,et al.  Single-stage LED driver with low bus voltage , 2013 .

[3]  Hung-Chi Chen,et al.  Dynamic Modeling and Controller Design for a Single-Stage Single-Switch Parallel Boost-Flyback–Flyback Converter , 2012, IEEE Transactions on Power Electronics.

[4]  S.K. Mazumder,et al.  A Ripple-Mitigating and Energy-Efficient Fuel Cell Power-Conditioning System , 2007, IEEE Transactions on Power Electronics.

[5]  Hyun-Lark Do,et al.  A Single-Switch AC–DC LED Driver Based on a Boost-Flyback PFC Converter With Lossless Snubber , 2017, IEEE Transactions on Power Electronics.

[6]  W. Choi,et al.  A Bridgeless Single-Stage Half-Bridge AC/DC Converter , 2011, IEEE Transactions on Power Electronics.

[7]  Leon M. Tolbert,et al.  Evaluation of a current source active power filter to reduce the dc bus capacitor in a hybrid electric vehicle traction drive , 2009, 2009 IEEE Energy Conversion Congress and Exposition.

[8]  Chun-An Cheng,et al.  A Novel Single-Stage High-Power-Factor LED Street-Lighting Driver With Coupled Inductors , 2014, IEEE Transactions on Industry Applications.

[9]  Chien-Hsuan Chang,et al.  An interleaved single-stage LLC resonant converter used for multi-channel LED driving , 2014, 2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA).

[10]  A. Guruvendrakumar,et al.  A High Power Density Single Phase Pwm Rectifier with Active Ripple Energy Storage , 2013 .

[11]  Chien-Hsuan Chang,et al.  A single-stage high-PF driver for supplying a T8-type LED lamp , 2014, 2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA).

[12]  G. Kimura,et al.  DC ripple current reduction on a single-phase PWM voltage source rectifier , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

[13]  Xinbo Ruan,et al.  Adaptive Voltage Control for Bidirectional Converter in Flicker-Free Electrolytic Capacitor-Less AC–DC LED Driver , 2017, IEEE Transactions on Industrial Electronics.

[14]  John Lam,et al.  An Output-Current-Dependent DC-Link Energy Regulation Scheme for a Family of Soft-Switched AC/DC Offline LED Drivers Without Electrolytic Capacitors , 2017, IEEE Transactions on Industrial Electronics.

[15]  Fanghua Zhang,et al.  High Power Factor AC–DC LED Driver With Film Capacitors , 2013, IEEE Transactions on Power Electronics.

[16]  Yu-Kang Lo,et al.  Study and implementation of an improved-power factor alternating-current-light emitting diode driver , 2015 .

[17]  Peng Fang,et al.  LED Driver Achieves Electrolytic Capacitor-Less and Flicker-Free Operation with an Energy Buffer Unit , 2019, 2018 IEEE Energy Conversion Congress and Exposition (ECCE).

[18]  Tsorng-Juu Liang,et al.  Interleaving Controlled Three-Leg Electronic Ballast for Dual-HID-Lamps , 2008, IEEE Transactions on Power Electronics.

[19]  M. Arias,et al.  On the Limit of the Output Capacitor Reduction in Power-Factor Correctors by Distorting the Line Input Current , 2012, IEEE Transactions on Power Electronics.

[20]  Tsorng-Juu Liang,et al.  Design and implementation of single-stage LED driver with high frequency pulse , 2015, 2015 IEEE 2nd International Future Energy Electronics Conference (IFEEC).

[21]  Junming Zhang,et al.  A High-Efficiency Quasi-Two-Stage LED Driver With Multichannel Outputs , 2017, IEEE Transactions on Industrial Electronics.

[22]  R. Jaschke,et al.  Higher Light Efficacy in LED-Lamps by lower LED-Current , 2016 .

[23]  Pedro S. Almeida,et al.  Offline Soft-Switched LED Driver Based on an Integrated Bridgeless Boost–Asymmetrical Half-Bridge Converter , 2015, IEEE Transactions on Industry Applications.

[24]  Dianguo Xu,et al.  A single-stage bridgeless LED driver based on CLCL resonant converter , 2017, 2017 IEEE Industry Applications Society Annual Meeting.

[25]  Ashish Kumar,et al.  GaN-based high-power-density electrolytic-free universal input LED driver , 2017, 2017 IEEE Energy Conversion Congress and Exposition (ECCE).

[26]  Kwyro Lee,et al.  A Current-Sourced LED Driver Compatible With Fluorescent Lamp Ballasts , 2015, IEEE Transactions on Power Electronics.

[27]  Xinbo Ruan,et al.  Feed-Forward Scheme for an Electrolytic Capacitor-Less AC/DC LED Driver to Reduce Output Current Ripple , 2014, IEEE Transactions on Power Electronics.

[28]  Xinbo Ruan,et al.  Means of Eliminating Electrolytic Capacitor in AC/DC Power Supplies for LED Lightings , 2009, IEEE Transactions on Power Electronics.

[29]  Xinbo Ruan,et al.  A Review of LED Drivers and Related Technologies , 2017, IEEE Transactions on Industrial Electronics.

[30]  Chien-Hsuan Chang,et al.  Design and Implementation of a Single-Stage Driver for Supplying an LED Street-Lighting Module With Power Factor Corrections , 2015, IEEE Transactions on Power Electronics.

[31]  Dianguo Xu,et al.  A Single-Stage Single-Switch LED Driver Based on the Integrated SEPIC Circuit and Class-E Converter , 2016, IEEE Transactions on Power Electronics.

[32]  Claudinor Bitencourt Nascimento,et al.  Single-Stage Integrated Bridgeless-Boost Nonresonant Half-Bridge Converter for LED Driver Applications , 2018, IEEE Transactions on Industrial Electronics.

[33]  Frede Blaabjerg,et al.  Decoupling of Fluctuating Power in Single-Phase Systems Through a Symmetrical Half-Bridge Circuit , 2015, IEEE Transactions on Power Electronics.

[34]  Cong Zheng,et al.  A High-Efficiency Quasi-Single-Stage Bridgeless Electrolytic Capacitor-Free High-Power AC–DC Driver for Supplying Multiple LED Strings in Parallel , 2016, IEEE Transactions on Power Electronics.

[35]  José Marcos Alonso Alvarez,et al.  Analysis and Design of the Integrated Double Buck–Boost Converter as a High-Power-Factor Driver for Power-LED Lamps , 2012, IEEE Transactions on Industrial Electronics.

[36]  Dianguo Xu,et al.  A Single-Stage LED Driver Based on Interleaved Buck–Boost Circuit and LLC Resonant Converter , 2015, IEEE Journal of Emerging and Selected Topics in Power Electronics.

[37]  Jianjing Wang,et al.  Characterization and Experimental Assessment of the Effects of Parasitic Elements on the MOSFET Switching Performance , 2013, IEEE Transactions on Power Electronics.

[38]  M. Arias,et al.  High-Efficiency Asymmetrical Half-Bridge Converter Without Electrolytic Capacitor for Low-Output-Voltage AC–DC LED Drivers , 2013, IEEE Transactions on Power Electronics.

[39]  Dianguo Xu,et al.  A Single-Stage LED Driver Based on BCM Boost Circuit and $LLC$ Converter for Street Lighting System , 2015, IEEE Transactions on Industrial Electronics.