• Title/Summary/Keyword: Integrated single-stage power converter

Search Result 23, Processing Time 0.02 seconds

An Integrated Single-Stage Zero Current Switched Quasi-Resonant Power Factor Correction Converter with Active Clamp Circuit (능동 클램프 회로를 적용한 단상 ZCS 공진형 역률개선 컨버터)

  • 이준영;문건우;고관본;윤명중
    • Proceedings of the KIPE Conference
    • /
    • 1999.07a
    • /
    • pp.626-630
    • /
    • 1999
  • A new integrated single-stage zero current switched(ZCS) quasi-resonant converter (QRC) for the power factor correction(PFC) converter is introduced in this paper. The power factor correction can be achieved by the discontinuous conduction mode(DCM) operation of an input current. The proposed converter has the characteristics of the good power factor, low line current harmonics, and tight output regulation. Furthermore, the ringing effect due to the output capacitance of the main switch can be eliminated by use of active clamp circuit.

  • PDF

Systematic Dynamic Modeling of an Integrated Single-stage Power Converter

  • Choi, Ki-Young;Lee, Kui-Jun;Kim, Yong-Wook;Kim, Rae-Young
    • Journal of Electrical Engineering and Technology
    • /
    • v.10 no.6
    • /
    • pp.2288-2296
    • /
    • 2015
  • This paper proposes a novel systematic modeling approach for an integrated single-stage power converter in order to predict its dynamic characteristics. The basic strategy of the proposed modeling is substituting the internal converters with an equivalent current source, and then deriving the dynamic equations under a standalone operation using the state-space averaging technique. The proposed approach provides an intuitive modeling solution and simplified mathematical process with accurate dynamic prediction. The simulation and experimental results by using an integrated boost-flyback converter prototype provide verification consistent with theoretical expectations.

A New Single-Stage PFC AC/DC Converter with Low Link-Capacitor Voltage

  • Lee, Byoung-Hee;Kim, Chong-Eun;Park, Ki-Bum;Moon, Gun-Woo
    • Journal of Power Electronics
    • /
    • v.7 no.4
    • /
    • pp.328-335
    • /
    • 2007
  • A conventional Single-Stage Power-Factor-Correction (PFC) AC/DC converter has a link capacitor voltage problem under high line input and low load conditions. In this paper, this problem is analyzed by using the voltage conversion ratio of the DC/DC conversion cell. By applying this analysis, a new Single-Stage PFC AC/DC converter with a boost PFC cell integrated with a Voltage-Doubler Rectified Asymmetrical Half-Bridge (VDRAHB) is proposed. The proposed converter features good power factor correction, low current harmonic distortions, tight output regulations and low voltage of the link capacitor. An 85W prototype was implemented to show that it meets harmonic requirements and standards satisfactorily with near unity power factor and high efficiency over universal input.

Single-Stage Single-Phase Integrated ZCS Quasi-Resonant Power Factor Preregulator Based on Forward Topology (단일 전력단 단상 공진형 영전류 스위칭 역률 개선 회로)

  • 구관본;이준영;윤명중
    • Proceedings of the KIPE Conference
    • /
    • 1999.07a
    • /
    • pp.639-642
    • /
    • 1999
  • An integrated zero current switching(ZCS) quasi-resonant converter(QRC) for power factor correction and high efficiency with single switch is proposed in this thesis. Boost integrated circuit operating discontinuous conduction mode(DCM) and QRC are used for power factor correction and reducing switching loss, respectively. A prototype converter has been designed and experimented. At rated condition, the THD in the input current waveform of this prototype has approximately 18%. The efficiency is obtained about 70%, the power factor is about 0.985 as well. Therefore, the proposed converter is suitable for a low power level converter with operating switching frequency above several hundred KHz.

  • PDF

DCM Boost Converter Integrated Single-Stage Forward-Flyback Converter for Power Factor Correction and Output Voltage Regulation (역률 개선과 출력 전압 조정을 위한 불연속 모드의 승압형 컨버터가 결합된 단일 전력단 포워드-플라이백 컨버터)

  • Lee Sung-Sae;Kang Jung-Il;Moon Gun-Woo;Moon Gun-Woo
    • Proceedings of the KIPE Conference
    • /
    • 2001.12a
    • /
    • pp.119-123
    • /
    • 2001
  • In this paper, a DCM operated boost integrated single-stage forward-flyback converter is proposed. This proposed converter has high power factor, low harmonic distortion, and tight output regulation. To increase efficiency, zero voltage switching with asymmetrical control is used. This converter also give low voltage stress in switch and this results in low conduction loss with low turn-on resistance.

  • PDF

An Integrated Single-Stage Zero Current Switched Quasi-Resonant Power Factor Correnction Converter with Active Clamp Circuit (능동 클램프 회로를 적용한 단상 ZCS 공진형 역률개선 컨버터)

  • 문건우;구관본;윤명중
    • The Transactions of the Korean Institute of Power Electronics
    • /
    • v.4 no.6
    • /
    • pp.539-546
    • /
    • 1999
  • A new integrated single-stage zero current switched(ZCS) quasi resonant convertedQRC) for the IX)wer f factor correction(PFCl converter is introduced in this paper. The power factor correction can be achieved by t the discontinuous conduction mod$\varepsilon$(DCM) operation of an input current. The proposed converter has the c characteristics of the good IX)wer factor, 10씨 line current harmonics, and tight output regulation. Furthern10re, t the ringing effect due to the output capacitance of the main switch can be eliminated by use of‘ active clamp c circuit. Therefore, the proIX)sed converter is expecttc'(] to be suitable for a compact power converter with a t tightly regulated output voltage requiring a switching frequency of more than several hundrtc'(]s kHz.

  • PDF

An Integrated Single Stage AC/DC Converter (고전력밀도 단일전력단 교류/직류 컨버터)

  • Phum, Sopheak;Kang, Cheolha;Kim, Eun-Soo;Lee, Young-Soo
    • Proceedings of the KIPE Conference
    • /
    • 2012.11a
    • /
    • pp.88-90
    • /
    • 2012
  • A study on an integrated single stage AC/DC converter is presented in this paper. The input current can be controlled by the auxiliary winding($L_{aux}$), auxiliary primary winding($N_3$), and the boost inductor($L_B$) which are designed to operate in discontinuous conduction mode(DCM) to reduced the total harmonic distortion(THD) of input current. The auxiliary primary winding($N_3$) is critically selected in order to compress the input capacitor voltage($V_{in}$) as well as to reduce the current stress of the switch(Q). Low total harmonic distortion(THD), low input voltage($V_{in}$) in universal input voltage($V_{AC}$), low current stress at the switching device and high efficiency are the main consideration keys in this design to achieve high performance system with low cost of single stage AC/DC converter. A 30W single stage AC/DC prototype converter is under study.

  • PDF

Novel Interleaved Single-Stage AC/DC Converter with a High Power Factor and High Efficiency

  • Wang, Yijie;Wang, Wei;Zhang, Xiangjun;Xu, Dianguo
    • Journal of Power Electronics
    • /
    • v.11 no.3
    • /
    • pp.245-255
    • /
    • 2011
  • A novel single-stage AC/DC converter with the soft-switching characteristic based on interleaving technology and an LLC topology is proposed here. The converter is integrated by an interleaved cell and an LLC cell. Because the components of the system are reduced as a result of integrating, the cost decreases. Since interleaving technology is adopted, the converter can work in a high voltage input state. The LLC topology chosen here ensures that the switches on the primary side work in the ZVS condition and that the diodes on the secondary side work in the ZCS condition, which decreases the switching loss of the system. A theoretical analysis and the design procedures of the proposed converter are proposed and discussed in detail. Simulations and experimental studies with a 100W prototype are done to prove the analysis.

A Study on Characteristic Analysis of High Frequency Generating Circuit Integrated Chopper-Inverter with High Power-Factor (고역률 초퍼-인버터 일체형 고주파 발생회로의 특성해석에 관한 연구)

  • Won Jae-Sun;Park Jae-Wook;Nam Seung-Sik;Lee Bong-Seob;Seok Jul-Ki;Kim Dong-Hee
    • The Transactions of the Korean Institute of Electrical Engineers B
    • /
    • v.53 no.10
    • /
    • pp.610-617
    • /
    • 2004
  • This paper presents a novel high frequency generating circuit integrated chopper-inverter using ZVS with high power-factor. The proposed topology is integrated half-bridge boost rectifier as power factor corrector(PFC) and half-bridge high frequency resonant inverter into a single-stage. The input stage of the half-bridge boost rectifier works in discontinuous conduction mode(DCM) with constant duty cycle and variable switching frequency. So that a boost converter makes the line current follow naturally the sinusoidal line voltage waveform. Simulation results have demonstrated the feasibility of the proposed high frequency resonant inverter. Characteristics values based on characteristics analysis through circuit analysis is given as basis data in design procedure. Also, experimental results are presented to verify theoretical discussion. This proposed inverter will be able to be practically used as a power supply in various fields as induction heating applications. fluorescent lamp and DC-DC converter etc.

A NOVEL ZVS-CV PWM AC-DC CONVERTER

  • Yan, Baiping;Chen, Zhiming;Liu, Jian
    • Proceedings of the KIPE Conference
    • /
    • 1998.10a
    • /
    • pp.709-712
    • /
    • 1998
  • A new ZVS-CV PWM converter with power factor correction (PFC) function is presented in this paper. The new topology is a integration of a boost converter and a ZVS-CV topology in a single power conversion stage. The new converter can be regulated in pulse-width modulation (PWM) by universal integrated control circuits. Some design considerations are given in detail. A laboratory prototype has been implemented to show the feasibility of the approach and the analysis.

  • PDF