TY - JOUR
T1 - AC-DC LED Driver With an Additional Active Rectifier and a Unidirectional Auxiliary Circuit for AC Power Ripple Isolation
AU - Shan, Zhenyu
AU - Chen, Xiaomei
AU - Jatskevich, Juri
AU - Tse, Chi K.
PY - 2019/1
Y1 - 2019/1
N2 - Single-phase ac light-emitting diode (LED) lamps require long-lifespan and high-efficiency ac-dc power converters for power factor correction (PFC) and current regulation. In such converters, the inherent double-line-frequency ripple power from the ac source is isolated from the load by large electrolytic capacitors (E-caps) or E-cap-less active circuits to improve reliability and lifespan. This paper presents an ac-dc LED driver with an additional active rectifier and a unidirectional auxiliary circuit for ripple power isolation. As compared with other similar designs, the proposed LED driver operates with reduced redundant power processing and a lower voltage on the storage capacitor, and the additional active circuits include fewer power components. The prototype with small polymer-hybrid capacitors and ceramic capacitors is separately tested in the experiment.
AB - Single-phase ac light-emitting diode (LED) lamps require long-lifespan and high-efficiency ac-dc power converters for power factor correction (PFC) and current regulation. In such converters, the inherent double-line-frequency ripple power from the ac source is isolated from the load by large electrolytic capacitors (E-caps) or E-cap-less active circuits to improve reliability and lifespan. This paper presents an ac-dc LED driver with an additional active rectifier and a unidirectional auxiliary circuit for ripple power isolation. As compared with other similar designs, the proposed LED driver operates with reduced redundant power processing and a lower voltage on the storage capacitor, and the additional active circuits include fewer power components. The prototype with small polymer-hybrid capacitors and ceramic capacitors is separately tested in the experiment.
KW - AC-DC converters
KW - auxiliary circuit
KW - LED driver
KW - light-emitting diode (LED)
KW - power factor correction (PFC)
UR - http://www.scopus.com/inward/record.url?scp=85042858615&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85042858615&origin=recordpage
U2 - 10.1109/TPEL.2018.2812223
DO - 10.1109/TPEL.2018.2812223
M3 - RGC 21 - Publication in refereed journal
SN - 0885-8993
VL - 34
SP - 685
EP - 699
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 1
M1 - 8306898
ER -