NDLI: APWM adapted half-bridge LLC converter with voltage doubler rectifier for improving light load efficiency

Content Provider	IET Digital Library
Author	Kim, J. W. Han, J. K. Lai, J. S.
Abstract	LLC converter is widely used in various applications due to its simple structure and zero voltage switching capability. To achieve high efficiency, LLC converter is usually designed to operate near the resonant frequency over the entire load conditions. However, a constant core loss of the main transformer due to the constant frequency operation has a bad effect on the efficiency in a light load condition where the core loss dominates the total loss. Therefore, it is essential to reduce transformer core loss in order to improve light load efficiency. Adapting asymmetric pulse-width modulation (APWM) in a half-bridge LLC resonant converter with voltage doubler rectifier for improving light load efficiency has been proposed. By adapting APWM, the core loss can be reduced dramatically in the light load condition, because both the switching frequency and the flux swing of the transformer are reduced. Furthermore, the proposed method does not affect the design of the converter. The experimental results with 400–250 V input and 100 V/2 A output prototype converter support the effectiveness of the proposed method.
Starting Page	339
Ending Page	341
Page Count	3
ISSN	00135194
Volume Number	53
e-ISSN	1350911X
Issue Number	Issue 5, Mar (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/53/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2016.4203
Journal	Electronics Letters
Publisher Date	2017-01-25
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	APWM APWM Adapted Half-bridge LLC Converter Asymmetric Pulse-width Modulation Constant Frequency Operation Current 2 A Flux Swing Half-bridge LLC Resonant Converter Light Load Efficiency Loss Power Electronics Power Supply PWM Power Converter Rectifying Circuit Resonant Frequency Resonant Power Converter Supervisory Circuit Switching Circuit Transformer Transformer Core Loss Reduction Voltage 100 V Voltage 400 V to 250 V Voltage Doubler Rectifier Zero Voltage Switching Capability
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Family of half-bridge LLC resonant converters with auxiliary switches for hold-up operation

Pulse-width modulation control strategy for high efficiency LLC resonant converter with light load applications

Five-level LLC resonant converter suitable for wide output voltage range

Zero voltage switching DC converter for high-input voltage and high-load current applications

DC/DC converter with parallel input and parallel output with shared power switches and rectifier diodes

Parallel soft switching converter with fewer switch counts

Non-isolated LLC resonant converter with suppressed circulating current and automatic resonant frequency matching capability

Analysis and implementation of a new soft switching DC/DC PWM converter

Single-stage high-power factor half-bridge flyback converter with synchronous rectifier

APWM adapted half-bridge LLC converter with voltage doubler rectifier for improving light load efficiency

Similar Documents

Family of half-bridge LLC resonant converters with auxiliary switches for hold-up operation

Pulse-width modulation control strategy for high efficiency LLC resonant converter with light load applications

Five-level LLC resonant converter suitable for wide output voltage range

Zero voltage switching DC converter for high-input voltage and high-load current applications

DC/DC converter with parallel input and parallel output with shared power switches and rectifier diodes

Parallel soft switching converter with fewer switch counts

Non-isolated LLC resonant converter with suppressed circulating current and automatic resonant frequency matching capability

Analysis and implementation of a new soft switching DC/DC PWM converter

Single-stage high-power factor half-bridge flyback converter with synchronous rectifier

APWM adapted half-bridge LLC converter with voltage doubler rectifier for improving light load efficiency