• Title/Summary/Keyword: Half-bridge

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Design of High Quality Regulator with High Efficiency Based on Half-Bridge Topology (하프 브릿지 컨버터를 기반으로 한 고효율을 갖는 고역률 정류기의 설계)

  • 이준영;문건우;정영석;윤명중
    • Proceedings of the KIPE Conference
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    • 1997.07a
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    • pp.400-409
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    • 1997
  • Design of single stage AC/DC converter with high power factor and high efficiency based on half-bridge topology for low power application is proposed. To obtain design equations, modelling and detailed analysis are performed. The proposed converter gives and power factor and high efficiency by employing aynchronous rectifiers. To verify the performances of the proposed converter 90W-converter has been designed. This prototype converter meets IEC555-2 requirements with near unity power factor.

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Dynamic Analysis and Control Design of Current-Mode Controlled Asymmetrical Half-Bridge DC-To-DC Converters (전류 제어 비대칭 하프 브릿지 직류-직류 컨버터의 동특성 해석 및 제어회로 설계)

  • Lim W.S.;Choi B,C.
    • Proceedings of the KIPE Conference
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    • 2003.07a
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    • pp.337-340
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    • 2003
  • This paper presented practical details about control-loop design and dynamic analysis for a peak current-mode controlled asymmetrical half-bridge(ASHB) do-to-dc converter, Graphical loop gain method is used to design the feedback compensation and analyze the closed-loop performance of ASHB converter. The results of the control design and closed-loop analysis are validated by experiments on a prototype converter.

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Analysis of Resonant Characteristics in Asymmetrical Control Half Bridge Converter (하프 브리지 컨버터의 비대칭 제어 공진 특성 분석)

  • Ahn J.R.;Kwon M.I.;Jang D.H.
    • Proceedings of the KIPE Conference
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    • 2003.07a
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    • pp.58-61
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    • 2003
  • In this paper, resonant Characteristics of the soft switched asymmetrical half bridge converter is analysis. The operation principle for proposed converter is explained in steady state and its circuit is analyzed by means of equivalent circuit. Experimental results carried out on a system prototype are included in this paper.

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Low-cost asymmetric control half-bridge inverter for LCD backlight (LCD 백라이트용 저가의 비태칭 제어 하프브리지 인버터)

  • 최성진
    • Proceedings of the KIPE Conference
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    • 2000.07a
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    • pp.509-512
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    • 2000
  • LCD displays for flat monitors the backlit using Cold Cathode Flourescent Lamps(CCFLs) In this paper a low-cost series resonant half-bridge inverter for LCD backlight is proposed as a CCFL ballast. It is regulated by asymmetric control for its fixed frequency soft switching model. The attractiveness of this topology is primarily its low cost because of using BJT switches and reduction of anti-parallel diode. Design procedure and experimental verification from 5W 15"LCD backlight are presented.

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A Study on Constant Power Control of Half Bridge Inverter for Microwave Oven

  • Lee, Min-Ki;Koh, Kang-Hoon;Lee, Hyun--Woo
    • KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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    • v.4B no.2
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    • pp.73-79
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    • 2004
  • For the global microwave market, high RF power or deluxe model is applying for inverter gradually. In this paper, 120[V]/1200[W] high power inverter is proposed and verified by an optimized design of PFM type. Especially the steady power output control was fulfilling at +/- 10[%] input voltage variation.

Half Bridge Inverter for Single Phase Induction Motor Driving (단상 유도 전동기를 위한 하프브리지 인버터)

  • 이종규;김영삼;원영진
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • 1999.11a
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    • pp.181-183
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    • 1999
  • This paper is about the design of half-bridge inverter controller with low cost and simple configuration for low power single-phase induction motor driving. The simple controller is composed of MCU and PLD. Also, to limit the overcurrent at initial driving, auxiliary function is added, and stabilizes the system. In order to verify the performance of the proposed methode, we design 500W inverter system, and in result, the response time of the proposed method compared with line voltage driving method is reduced by 200[msec].

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High Efficiency Asymmetrical Half Bridge Converter for PDP SMPS (PDP SMPS를 위한 전부하 고효율 비대칭 하프 브리지 컨버터)

  • Heo Tae-Won;Nagahara Kiyokazu;Okada Yoich;Choi Heung-Gyoon
    • Proceedings of the KIPE Conference
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    • 2006.06a
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    • pp.131-133
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    • 2006
  • A high efficiency half bridge converter for PDP in whole operation load range is proposed in this paper. The ZVS(Zero Voltage Switching) in whole load range and high efficiency in low load range is achieved because the proposed converter is switched by fixed frequency asymmetrical duty ratio and resonant operation.

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The Converter with Half Bridge Inverter for the Switched Reluctance Motor Drives (단상 하프 브리지 인버터를 이용한 스위치드 리럭턴스 전동기용 컨버터 토폴로지)

  • Jang, Do-Hyun
    • Proceedings of the KIEE Conference
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    • 2001.04a
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    • pp.335-337
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    • 2001
  • The new converter topology using half bridge inverter for the switched reluctance motor drives is proposed. The proposed SRM drives are supplied by the pulse voltage source, while the conventional drives are supplied by de voltage source. Proposed converter does not lose the characteristics of classic converter though the total no. of power switches are reduced.

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Pulse-Grouping Control Method for High power Density DC/DC Converters

  • Kang, Shin-Ho;Jang, Jun-Ho;Lee, Jun-Young
    • Journal of the Semiconductor & Display Technology
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    • v.6 no.2 s.19
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    • pp.45-48
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    • 2007
  • The proposed method offers an improved DC/DC converter scheme to increase power density. It is based on half-bridge topology with newly introduced pulse-grouping control method, which helps to reduce the transformer size and the volume of semiconductor devices maintaining high efficiency. Test results with 85W(18.5V/4.6A) design shows that the measured efficiency is 93.5% with power density of $36W/in^3$.

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