• 제목/요약/키워드: Phase-shift full-bridge converter

검색결과 130건 처리시간 0.021초

블로킹커패시터를 이용한 향상된 위상천이 펄스폭변조 풀브리지 컨버터 (Improved Phase-shift Pulse-width Modulation Full-bridge Converter using a Blocking Capacitor)

  • 정강률
    • 조명전기설비학회논문지
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    • 제25권8호
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    • pp.20-29
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    • 2011
  • This paper presents an improved phase-shift pulse-width modulation (PWM) full-bridge converter using a blocking capacitor. As the proposed converter reduces the circulation energy by inserting only one series blocking capacitor at the primary side of the conventional phase-shift PWM full-bridge converter structure, it improves the operation characteristics of the conventional converter. In this paper, first, the operation of conventional phase-shift PWM full-bridge converter is roughly reviewed, and then the operational principle of the proposed converter is classified and explained by each mode. After that, a prototype design example based on the operational principle is shown. Then, the improved operation characteristics of the proposed converter are actually verified through the experimental results.

태양광 모듈 통합 전기 자동차용 Phase Shift Full Bridge Converter (A PV-Module Integrated Phase Shift Full Bridge Converter for EV)

  • 황윤경;남광희
    • 전력전자학회논문지
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    • 제25권6호
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    • pp.425-432
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    • 2020
  • The phase-shifted, full-bridge (PSFB) DC-DC converter is widely used in electric vehicles (EVs) to charge a low-voltage (12 V) battery from a high-voltage battery. A Photovoltaic (PV) module-integrated PSFB converter is proposed for the EV power conversion system. The converter is useful because solar energy can be utilized to extend the driving range. The buck converter circuit is simply realized by adding one switch to the conventional PSFB converter's secondary side. For the inductor and diode, the existing components in the PSFB converter are shared. The proposed converter can charge a low-voltage battery from the PV module with maximum power point tracking. In addition, the two power sources can be used simultaneously, and efficiency is increased by reducing the circulating current, which is a problem for the conventional PSFB converter.

Design and Control of the Phase Shift Full Bridge Converter for the On-board Battery Charger of Electric Forklifts

  • Kim, Tae-Hoon;Lee, Seung-Jun;Choi, Woo-Jin
    • Journal of Power Electronics
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    • 제12권1호
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    • pp.113-119
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    • 2012
  • This paper describes the design and control of a phase shift full bridge converter with a current doubler, which can be used for the on-board charger for the lead-acid battery of electric forklifts. Unlike the common resistance load, the battery has a large capacitance element and it absorbs the entire converter output ripple current, thereby shortening the battery life and degrading the system efficiency. In this paper a phase shift full bridge converter with a current doubler has been adopted to decrease the output ripple current and the transformer rating of the charger. The charge controller is designed by using the small signal model of the converter, taking into consideration the internal impedance of the battery. The stability and performance of the battery charger is then verified by constant current (CC) and constant voltage (CV) charge experiments using a lead-acid battery bank for an electric forklift.

ZVS 위상천이 풀브리지 컨버터의 소신호 모델링 및 디지털 제어기 설계 (ZVS Phase Shift Full-Bridge Converter's Small Signal Modeling and Digital Controller Design)

  • 김정우;조영훈;최규하
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2014년도 전력전자학술대회 논문집
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    • pp.321-322
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    • 2014
  • In this paper, a zero-voltage switching (ZVS) phase shift full-bridge converter is analyzed. The small-signal model is derived to design a digital controller. PLECS simulation shows how sampling method effects on transfer function of ZVS phase shift full-bridge converter.

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A Hybrid PWM-Resonant DC-DC Converter for Electric Vehicle Battery Charger Applications

  • Lee, Il-Oun
    • Journal of Power Electronics
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    • 제15권5호
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    • pp.1158-1167
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    • 2015
  • In this paper, a new hybrid DC-DC converter is proposed for electric vehicle 3.3 kW on-board battery charger applications, which can be modulated in a phase-shift manner under a fixed frequency or frequency variation. By integrating a half-bridge (HB) LLC series resonant converter (SRC) into the conventional phase-shift full-bridge (PSFB) converter with a full-bridge rectifier, the proposed converter has many advantages such as a full soft-switching range without duty-cycle loss, zero-current-switching operation of the rectifier diodes, minimized circulating current, reduced filter inductor size, and better utilization of transformers than other hybrid dc-dc converters. The feasibility of the proposed converter has been verified by experimental results under an output voltage range of 250-420V dc at 3.3 kW.

Phase-Shift Triple Full-Bridge ZVZCS Converter with All Soft Switched Devices

  • Zhu, Junjie;Qian, Qinsong;Lu, Shengli;Sun, Weifeng
    • Journal of Power Electronics
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    • 제19권6호
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    • pp.1337-1350
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    • 2019
  • This paper proposes a Phase-Shift Triple Full-Bridge (PSTB) Zero-Voltage Zero-Current-Switching (ZVZCS) converter with a high switching frequency and high efficiency. In the proposed converter, all three bridge legs are shared leading-legs, and all three transformers work in the Discontinuous Conduction Mode (DCM). Thus, all of the switches and diodes in the PSTB ZVZCS can be soft switched. Moreover, since all of the transformers can pass energy from the primary-side to the secondary-side when their primary-side currents are not zero, there is no circulating current. As a result, the PSTB ZVZCS converter can achieve a high efficiency at high operating frequencies. A theoretical analysis and the characteristics of the proposed converter are presented and verified on a 1MHz 200~300V/24V 1.2kW hardware prototype. The proposed converter can reach a peak efficiency of 96.6%.

위상이동 방식 Full-Bridge 컨버터의 손실 분석에 관한 연구 (A Study on the Loss Analysis for the Phase-Shaft Full-Bridge Converter)

  • 배진용;김용;백수현;이은영;최근수
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2003년도 춘계학술대회 논문집 전기기기 및 에너지변환시스템부문
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    • pp.157-162
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    • 2003
  • This paper presents the loss analysis of Phase-Shift Full-Bridge Converter. Full-Bridge DC/DC Converter presented in this paper used a phase shift control in the primary side to achieve ZVS (Zero-Voltage-Switching) for main switch. Phase-Shaft Full-Bridge converter have an effect on the high power system. This paper analyses the loss of each component and the various losses in the circuit assessed. The result of the analysis are verified using 2.5kW, 50kHz prototype.

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단일칩 마이컴을 이용한 위상변위 방식 풀브리지 직류-직류 전력변환기 (Phase-Shift Full-Bridge DC-DC Converter using the One-Chip Micom)

  • 정강률
    • 전기전자학회논문지
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    • 제25권3호
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    • pp.517-527
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    • 2021
  • 본 논문에서는 단일칩 마이컴을 이용한 위상변위 방식 직류-직류 전력변환기를 제안한다. 제안한 전력변환기의 1차측은 위상변위 방식에 의하여 단극성 펄스폭변조(unipolar PWM)로 동작하는 풀브리지 전력구조이며, 2차측은 4개의 다이오드로 구성된 풀브리지 전파정류기이다. 제안한 전력변환기의 제어는 단일칩 마이컴에 의해 수행되고, 그 MOSFET 스위치들은 부트스트랩 회로에 의해 구동된다. 그래서 전력변환기의 전체 시스템은 간단하다. 제안한 전력변환기는 공진회로와 저지커패시터를 이용하여 고효율을 달성한다. 본 논문에서는 먼저, 제안한 전력변환기의 전력회로의 동작을 각 동작모드를 따라 설명한다. 그리고 제안한 전력변환기의 전력회로 설계방식을 보이고 제안한 전력변환기를 동작시키는 마이컴 상의 소프트웨어 제어 알고리즘과 피드백 및 스위치 구동 회로에 관하여 간략히 설명한다. 그 후, 본 논문에서 제시한 설계와 구현방식에 의하여 설계하고 제작된 시제품 전력변환기의 실험결과를 통하여 제안한 전력변환기의 동작 특성을 입증한다. 실험결과에서 약 92% 정도의 최고 효율을 얻었다.

DSP를 이용한 위상 천이 풀-브릿지 컨버터의 디지털 제어기 구현 (Implementation of Phase Shift Full-Bridge PWM Converter Using DSP)

  • 임수현;임정규;정세교;이현우
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2006년도 전력전자학술대회 논문집
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    • pp.137-139
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    • 2006
  • This paper present an implementation of digital control system for a phase-shift full-bridge converter using a digital signal processor. The digital control of phase-shift full-bridge converter provides many advantageous of easily generating various phase-shift timing and implementing a complex voltage and current control algorithm. The digital controller is implemented using the DSP TMS320F2812 and the converter and controller operation is proved through the experimental results.

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고정 위상 동작 인버터를 포함하는 위상천이 풀 브리지 DC/DC 컨버터 (Phase-Shift Full-Bridge DC/DC Converter with Fixed-Phase Operation Inverter)

  • 김진호;박재성;김홍권;박준우;신용생;지상근;조상호;노정욱;홍성수
    • 전력전자학회논문지
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    • 제18권2호
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    • pp.131-137
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    • 2013
  • In this paper, the phase-shift full-bridge DC/DC converter with fixed-phase operation inverter is proposed. The proposed circuit consists of two full-bridge inverters which are connected in parallel. While one full-bridge inverter operates as the fixed-phase, it regulates the output voltage by adjusting the phase of the other inverter. During the normal operation period, the proposed circuit makes the less amount of conduction loss of the primary switches and secondary synchronous rectifiers, as well as the less amount of the current ripple of the output inductor, than the conventional phase-shift full-bridge DC/DC converter does. Also, it achieves high efficiency by reducing the snubber loss of the secondary synchronous rectifier. To sum up, the present inquiry analyzes the theoretical characteristics of the proposed circuit, and shows the experimental results from a prototype for 450W power supply.