2017
DOI: 10.1002/tee.22484
|View full text |Cite
|
Sign up to set email alerts
|

High‐power‐factor single‐switch AC to DC converter for LED lighting

Abstract: In this paper, we report a novel single‐switch AC to DC step‐down converter suitable for light emitting diodes. The proposed topology has a buck and a buck–boost converter. The circuit is designed to operate in the discontinuous conduction mode in order to improve the power factor. In this topology, a part of the input power is connected to the load directly. This feature of the proposed topology increases the efficiency of power conversion, improves the input power factor, produces less voltage stress on inte… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1

Citation Types

0
3
0

Year Published

2020
2020
2022
2022

Publication Types

Select...
5
1

Relationship

0
6

Authors

Journals

citations
Cited by 6 publications
(3 citation statements)
references
References 45 publications
0
3
0
Order By: Relevance
“…( 5) During the operation, the voltage across the primary inductor V L is equal to the input voltage V PV . Therefore, it can be written as (6) The inductor voltage V I can be expressed in terms of transformer turns ratio and V L as below (7) Now, the voltage V B can be written as (8) In order to have discontinuous conduction, using the voltage second balance equation, the inductor voltage V L in the low voltage side to become zero is written as (9) After simplification, the above equation becomes (10) Since the voltage V CL across capacitor C L is equal to negative of the inductor voltage V L in the low voltage side, voltage V CL across capacitor C L can be written as below (11) https://www.indjst.org/ Using Kirchhoff 's voltage law, the voltage V B of the converter can be written as (12) The inductor voltage V I in the secondary to become zero is written as From equations ( 11) -( 13), the voltage gain of the converter is written as Voltage gain (14) In the inverter operation, the voltage variation has to be limited in the specified value. This is done by designing the capacitor.…”
Section: Mathematical Analysismentioning
confidence: 99%
See 1 more Smart Citation
“…( 5) During the operation, the voltage across the primary inductor V L is equal to the input voltage V PV . Therefore, it can be written as (6) The inductor voltage V I can be expressed in terms of transformer turns ratio and V L as below (7) Now, the voltage V B can be written as (8) In order to have discontinuous conduction, using the voltage second balance equation, the inductor voltage V L in the low voltage side to become zero is written as (9) After simplification, the above equation becomes (10) Since the voltage V CL across capacitor C L is equal to negative of the inductor voltage V L in the low voltage side, voltage V CL across capacitor C L can be written as below (11) https://www.indjst.org/ Using Kirchhoff 's voltage law, the voltage V B of the converter can be written as (12) The inductor voltage V I in the secondary to become zero is written as From equations ( 11) -( 13), the voltage gain of the converter is written as Voltage gain (14) In the inverter operation, the voltage variation has to be limited in the specified value. This is done by designing the capacitor.…”
Section: Mathematical Analysismentioning
confidence: 99%
“…DC-DC converter in flyback configuration provides high step up gain with a simple structure. This converter uses electrical isolation and the switches in the circuit are subjected to more stress due to the leakage inductance (5,6) . There are energy regeneration techniques implemented to recycle the leakage energy.…”
Section: Introductionmentioning
confidence: 99%
“…As the fourth generation of green light source, the light emitting diode (LED) has high brightness, high efficiency, good stability, long lifespan, safety, and environmentally friendly features, compared with traditional light sources [1,2]. To ensure that LED functions effectively, an LED driver must be used.…”
Section: Introductionmentioning
confidence: 99%