High power factor electronic ballast using resonant converter for compact fluorescent lamp

Ramadas, Geetha; N, Manoj Kumar; Yesuraj, Sukhi; Yesuraj, Jeyashree

doi:10.1002/cta.2231

Cited by 10 publications

(4 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

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%

“…When the system is developed to supply ac loads, the dc-ac converter can be in parallel with the solar panel. A Step up transformer or a series connection of solar panels can increase the voltage level required for the inverter (7,8) . Transformerless dc-dc converters like cascade boost type, voltage multiplier type, voltage lift type etc., achieve high gain are complex in structure and are not economical (9,10) .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

High Step Up Converter with Transformerless Inverter for Grid Integration

Sukhi¹,

Jeyashree²,

Anita³

et al. 2022

IJST

View full text Add to dashboard Cite

Objectives: The objective of this paper is to design a high step up converter for PV applications. The output of the converter is applied to an inverter with less number of component counts. Methods: Coupled inductor is proposed in power electronic converters to increase high gain. The output of the dc-dc converter is given to the inverter. Finding: Simulation and hardware results show that the voltage stress in the passive components and the switches is reduced. Highly stable output voltage is obtained in the output due to high step up conversion. The converter can be operated in high step up mode without reaching the extreme limits. The leakage occurring in the coupled inductor is utilized and the problem due to reverse recovery voltage across the diode is reduced. Since low voltage is applied to MOSFET, conduction losses are less with higher efficiency. The inverter has a simple structure and operates at grid frequency. The inverter developed has low THD, better output waveform and the filter elements are of small size. The electromagnetic interference of the proposed inverter is very less. Novelty: The proposed inverter is designed with less number of switches. The proposed topology is simulated and the hardware is developed to know the feasibility of the converter.

show abstract

Section: Mathematical Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High Step Up Converter with Transformerless Inverter for Grid Integration

Sukhi¹,

Jeyashree²,

Anita³

et al. 2022

IJST

View full text Add to dashboard Cite

show abstract

“…Although the power factor is high, the THDs can be improved with better techniques. In [13], the authors proposed a novel single-stage single-switch resonant inverter with a high power factor for electronic ballast. The power factor correction circuit is at the input side and is designed to operate at discontinuous conduction mode.…”

Section: Introductionmentioning

confidence: 99%

Power Factor Correction of Compact Fluorescent and Tubular LED Lamps by Boost Converter with Hysteretic Control

Revelo-Fuelagán

Candelo-Becerra

Hoyos

2020

Journal of Daylighting

View full text Add to dashboard Cite

Compact Fluorescent Lamps (CFLs) and Light-emitting Diode (LED) lamps have received wide acceptance in lighting applications during the last few years. However, without a power factor correction (PFC), the lamps reach a lagging power factor below 0.64 while the total harmonic distortion (THD) in the input current can be over 136%. Therefore, this paper presents an efficient, small size, low cost, and analog technology based on PFC for CFLs and tubular LED lamps. The topology to couple the line with the ballast of the lamp consists of a boost electronic converter under a hysteretic controller that is designed based on hysteretic current mode control. Besides, an experimental prototype is implemented with the PFC applied to a 15 W CFL and 12 W tubular LED lamp. The results show that the prototype corrects the lagging power factor to a value close to 0.98 and that harmonic levels are obtained below the limits set by the IEC 61000-3-2 Class C standard. Furthermore, the test showed that lamps with the PFC can be switched on and off more times than lamps without the PFC due to the low THD produced in the CFL, thus avoiding abrupt changes in the line current. These results are promising, as the controller does not require a compensation ramp as in other PWM control strategies, and it can be adapted to any type of lamp that draws a pulsating input current. In addition, the proposed controller could be applied to correct the power factor or regulate voltage for other applications, as it is an autonomous control technique with compact implementation.

show abstract

“…According to some statistics, using resonant converter is growing immediately in power electronics. Resonance converter can be utilized in different cases, such as LED drivers, HF inverters, electronic ballasts, battery chargers, motor drive, multilevel converters, LCD TV power supply, renewable energy, and even for Maglev due to high performance of these converters …”

Section: Introductionmentioning

confidence: 99%

A new design strategy for DC/DC LLC resonant converter: Concept, modeling, and fabrication

Khosrogorji

Soori

Torkaman

2019

Circuit Theory & Apps

View full text Add to dashboard Cite

Summary In this paper, a new design procedure for LLC converter has been introduced. In fact, this method is a computer‐based design algorithm based on a numerical technique. In the process of designing, the value of the resonant element is obtained by solving the LLC converter fundamental equation. This converter will be controlled by using state feedback, such as output voltage variable. As a matter of fact, in a control system, the change of output voltage (because of load variation) will affect the switching frequency, so the output voltage will be tuned. In the designing process, the fundamental equations of LLC converter are obtained, and the value of the resonant elements is calculated. Also, a comparison analysis is carried out between the proposed and typical methods. The simulation is done to investigate the validity of the proposed method. Moreover, a prototype is manufactured, and the experimental test is done to evaluate its applicability.

show abstract

High power factor electronic ballast using resonant converter for compact fluorescent lamp

Cited by 10 publications

References 39 publications

High Step Up Converter with Transformerless Inverter for Grid Integration

High Step Up Converter with Transformerless Inverter for Grid Integration

Power Factor Correction of Compact Fluorescent and Tubular LED Lamps by Boost Converter with Hysteretic Control

A new design strategy for DC/DC LLC resonant converter: Concept, modeling, and fabrication

Contact Info

Product

Resources

About