• Title/Summary/Keyword: Phase shift full-bridge converter

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

  • Kim, Jeong-Woo;Cho, Younghoon;Choe, Gyu-Ha
    • Proceedings of the KIPE Conference
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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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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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    • v.12 no.1
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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.

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

  • Hwang, Yun-Kyung;Nam, Kwang-Hee
    • The Transactions of the Korean Institute of Power Electronics
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    • v.25 no.6
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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.

An Optimal Structure of Phase Shift Full Bridge Converter for High-capacity On-board Battery Charger of Electric Vehicle (EV용 대용량 탑재형 배터리 충전기에 적합한 Phase Shift Full Bridge Converter의 최적 구조)

  • Kim, Min-Kook;Kim, Yun-Sung;Cho, Nam-Jin;Lee, Byoung-Kuk
    • Proceedings of the KIPE Conference
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    • pp.35-36
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    • 2012
  • 본 논문은 EV용 탑재형 배터리 충전기(OBC)와 같은 중 대용량 충전시스템에 적용한 Phase Shift Full Bridge Converter (PSFB) 토폴로지를 사용하는 경우, 트랜스포머의 구조에 따른 특성을 분석한다. 일반적으로 PSFB는 다른 토폴로지에 비해 코어 사용 효율이 높기 때문에 상대적으로 소형 경량화 설계가 용이하다. 그러나 수 kW급의 시스템 응용에서는 기존 코어 형상이나 Ap-limit과 제약이 따른다. 또한 특화된 코어의 경우 높은 가격으로 설계 경쟁력이 낮아진다. 따라서 본 논문에서는 이러한 대용량 PSFB의 응용 시스템에 적합한 코어 설계를 위해 다양한 트랜스포머의 구조를 선정하여 그 특성을 비교분석한다.

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Design and Implementation of a Control System for the Phase Shift Full-bridge Converter of the On-board Charger for Electric Vehicles (전기자동차 탑재형 배터리 완속 충전기의 위상천이 풀-브릿지 컨버터 제어시스템 설계 및 구현)

  • Lee, Jun Hyok;Jung, Kwang-Soon;Kim, Ho Kyung;Hong, Sung-Soo;Ahn, Hyun-Sik
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.65 no.11
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    • pp.1860-1867
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    • 2016
  • In this paper, first, a linearized modeling of a phase shift full-bridge converter used in chargers of electric vehicles is derived by using state-space approach and transfer functions from the duty ratio to output voltage and the inductor current are also verified. second, control systems for the output voltage and the inductor current are designed using the root locus technique. It is illustrated by experimental results that the control performance on the output variables is satisfied with the designed digital control system based on a automobile qualified 32-bit microcontroller.

Design of Dual-channel Interleaved Phase-shift Full-bridge Converter

  • Che, Yanbo;Wang, Dianmeng;Liu, Xiaokun
    • Journal of Electrical Engineering and Technology
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    • v.12 no.4
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    • pp.1529-1536
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    • 2017
  • A digital dual-channel interleaved phase-shift full-bridge converter is investigated in this paper, and its topology and principle are analyzed. To realize current sharing and stabilize the output voltage, a controller with current sharing loop and closed voltage loop is employed. In addition, current sharing will increase the output current fluctuation and a new digital interleaved driving technology is proposed to reduce the output current ripple. To verify the analysis, simulation and experiments are carried out, which shows the effectiveness of the proposed control strategies.

Output Inductor Less Phase Shift Full Bridge Converter with Current Stress Reduction Technique for Server Power Application

  • Lee, Woo-Jin;Park, Ki-Bum;Heo, Tae-Won;Moon, Gun-Woo
    • Proceedings of the KIPE Conference
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    • pp.502-504
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    • 2008
  • A new output inductor less phase shift full bridge converter with current reduction technique for server power application is proposed in this paper. The proposed converter can reduce the current stress by using the auxiliary circuit. Since the auxiliary circuit causes the additional resonance between the leakage inductor and auxiliary capacitor before the powering period, the proposed converter has lower current stress even no output filter inductor. Small size and circulating energy can be also the merits of the proposed converter. The operational principles and analysis are presented. Experimental results demonstrate that the current stress can be reduced effectively by using the auxiliary circuit without large output filter inductor.

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A 3kW Battery Charger with Battery Diagnosis Function Using Online Impedance Spectroscopy (온라인 임피던스 분광법을 이용한 배터리 진단 기능을 가진 3kW 충전기)

  • Doan, Van-Tuan;Choi, Woojin
    • Proceedings of the KIPE Conference
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    • pp.68-69
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    • 2014
  • In the battery based applications such as electric vehicle and energy storage system, the performance of the system highly depends on the reliability of the battery. However, it is difficult to obtain the accurate information about the state-of-health (SOH) of battery during its operation. In this paper a 3kw battery charger with battery diagnosis function which can estimate the SOH of the battery by using online impedance spectroscopy technique is introduced. For the charger phase shift full bridge converter with synchronous rectification has been adopted to implement the charge and diagnosis functions. The impedance spectroscopy is performed after the charge to obtain the information about the internal impedance of the battery module, hence the SOH can be estimated online by observing the impedance variation of the battery over time. All the design procedure of the proposed charger is detailed and the feasibility of the system is verified by the experimental results.

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A Study on the Power Supply System for the Arc Lamp (아크램프를 위한 전원공급 시스템의 연구)

  • La, Jae Du
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.67 no.3
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    • pp.125-130
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    • 2018
  • Arc lamps are now widely utilized as illumination sources for a large number of investigations in wide-field fluorescence microscopy. Among many power converters for the lamp, the PSFB (Phase-Shift Full-Bridge) converter with the ZVS (Zero Voltage Switching) is the most widely used soft switched circuit in high-power applications. Also, in the most luminaries, the power factor has to be more and more important. Thus, the power factor correction(PFC) must be included in the power system. A new igniter module using the switching power device and the transformer is proposed instead of the conventional igniter using the mechanical contactor. The proposed converter with the high power factor and high efficiency is verified through the experimental works.

Battery charging device using DMFC for an electric bicycle (DMFC를 사용한 전기자전거 배터리 충전장치)

  • Kim, Young-Ho;Ji, Young-Hyok;Kim, Jae-Hyung;Won, Chung-Yuen;Kim, Young-Real
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • pp.255-258
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    • 2008
  • In this paper, the battery charging device using DMFC(Direct Methanol Fuel Cell) for electric bicycle is proposed. In the proposed system, phase-shift full-bridge converter is used as a battery charger by boosting the 12V DMFC output voltage up to 36V. By using the phase-shift technique, the ringing of the transformer is reduced and the efficiency of the converter can be improved. The operation modes of proposed phase-shift full-bridge converter is analyzed and verified by the simulation and the experimental results.

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