• Title/Summary/Keyword: PFC boost converter

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Design of the Inverter Motor Drive System Applied to PFC using Interleaving Method (인터리빙 PFC를 적용한 모터구동 인버터 시스템 설계)

  • Yoon, Seong-Sik;Choi, Hyun-Eui;Kim, Tae-Woo;Ahn, Ho-Kyun;Park, Seung-Kyu;Yoon, Tae-Sung;Kwak, Gun-Pyoung
    • Journal of the Korean Society for Precision Engineering
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    • v.27 no.4
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    • pp.14-19
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    • 2010
  • In this paper, using interleaved power factor correction how to improve the inverter efficiency studied. Interleaved method can reduce the conduction losses and the inductor energy. Generally, critical conduction mode (CRM) boost PFC converter used low power level because of the high peak currents. if you use the interleaved mode, CRM PFC can be used medium or high power application. interleaved CRM PFC can reduce current ripple for higher system reliability and size of buck capacitor and EMI filter size. Interleaved CRM PFC that is installed in front of inverter can maintain the constant voltage regardless of the input voltage.

A study on the characteristics of high power factor AC/DC converter with Feedforward control (Feedforward 제어에 의한 고역률 AC/DC 컨버터의 톡성분석)

  • Kim, Cherl-Jin;Jang, Jun-Young;Yoo, Byeong-Ku;Sin, Seung-Soo;Kim, Young-Tae
    • Proceedings of the KIEE Conference
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    • 2003.07b
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    • pp.1244-1246
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    • 2003
  • Conventional Switched Mode Power Supplies(SMPS) with diode-capacitor rectifier have distorted input current waveform with high harmonic content. Typically, these SMPS have a power factor lower than 0.65. To improve with this problem. the power factor correction(PFC) circuit of power supplies has to be introduced. Specially, to reduce size and manufacture cost of power conversion device, the single-stage PFC converter is increased to demand as necessary of study. In this case single-stage PFC converter has been used DC-DC converter with boost converter. However in this paper, it is studied flyback converter of high power factor, high efficiency by feedforward control. Also, the validity of designed and manufactured high power factor flyback converter is confirmed by simulation and experimental results.

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Investigation and Implementation of a Passive Snubber with a Coupled-Inductor in a Single-Stage Full-Bridge Boost PFC Converter

  • Meng, Tao;Ben, Hongqi;Li, Chunyan;Wei, Guo
    • Journal of Power Electronics
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    • v.13 no.2
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    • pp.206-213
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    • 2013
  • In this paper, an improved passive snubber is investigated in a single-phase single-stage full-bridge boost power factor correction (PFC) converter, by which the voltage spike across primary side of the power transformer can be suppressed and the absorbed energy can be transferred to the output side. When compared with the basic passive snubber, the two single-inductors are replaced by a coupled-inductor in the improved snubber. As a result, synchronous resonances in the snubber can be achieved, which can avoid the unbalance of the voltage and current in the snubber. The operational principle of the improved passive snubber is analyzed in detail based on a single-phase PFC converter, and the design considerations of both the snubber and the coupled-inductor are given. Finally, a laboratory-made prototype is built, and the experimental results verify the feasibility of the proposed method and the validity of the theoretical analysis and design method.

Influence on the PFC circuit with characteristics variation of MPP core (금속분말 코어의 특성변화가 PFC 회로에 미치는 영향)

  • Ju J.K.;Ahn T.Y.;Jang P.W;Jeong I.B.;Choi G.B.
    • Proceedings of the KIPE Conference
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    • 2003.07a
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    • pp.434-438
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    • 2003
  • This paper present an investigation of the influence on the PFC(power factor correction) circuit with characteristics variation of MPP (Molybdenum permalloy powder) core. The experiment results of the 1.5kW class Boost converter for PFC rectifier with the average current mode control are evaluated to verify the influence on the PFC converter with inductance variation of the MPP core. As a results, it is shown that the ripple of the inductor using a MPP core increase with output power of the converter.

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A New Zero Voltage Transition Bridgeless PFC with Reduced Conduction Losses

  • Mahdavi, Mohammad;Farzanehfard, Hosein
    • Journal of Power Electronics
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    • v.9 no.5
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    • pp.708-717
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    • 2009
  • In this paper a new zero voltage transition PWM bridgeless PFC is introduced. The auxiliary circuit provides soft switching condition for all semiconductor devices. Also, in the resonant path of the auxiliary circuit, only two semiconductor devices exist. Therefore the resonant conduction losses are low. Furthermore, the auxiliary circuit semiconductor elements consist of only one diode and one switch. The proposed auxiliary circuit is applied to a bridgeless PFC converter to further reduce conduction and switching losses. In this paper, the operating modes of this converter are explained and the resulting ideal and simulation waveforms are shown. The presented experimental results justify the theoretical analysis.

Predictive control based partial switching PFC converter for achieving high efficiency (고효율 구현을 위한 예측제어 기반 부분 스위칭 PFC 컨버터)

  • Choi, Yeong-Jun;Kim, Tae-Jin;Kim, Rae-Young
    • Proceedings of the KIPE Conference
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    • 2014.11a
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    • pp.1-2
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    • 2014
  • In this paper the partial switching PFC converter which is based on predictive control is proposed. In terms of satisfying the harmonic standard, the predictive control shows a similar performance to the conventional average current mode control PFC in the normal input condition. Moreover, the current harmonic characteristic is insensitive to the distorted input voltage. With predictive control method, novel on-line partial switching strategy is suggested in this paper. Depending on the operating condition, the partial switching PFC converter can boost its output voltage. Also when its efficiency needs to be improved, according to load condition, the partial switching can be achieved. The proposed strategy is proved by the results of FFT and the loss analysis using PSIM 9.0.

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High Power Factor High Efficiency PFC AC/DC Converter for LCD Monitor Adapter (LCD 모니터의 어댑터를 위한 고역률 고효율 PFC AC/DC 컨버터)

  • Park K. H.;Kim C. E.;Youn M. J.;Moon G. W.
    • Proceedings of the KIPE Conference
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    • 2003.11a
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    • pp.85-89
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    • 2003
  • Many single-stage PFC(power-facto.-correction) ACHC converters suffer from the high link voltage at high input voltage and light load condition. In this paper, to suppress the link voltage, a novel high power factor high efficiency PFC AC/DC converter is proposed using the single controller which generates two gate signals so that one of them is used far gate signal of the flyback DC/DC converter switch and the other is applied to the Boost PFC stage. A 130w prototype for LCD monitor adapter with universal input $(90-265V_{rms})$ and 19.5V 6.7A output is implemented to verify the operational principles and performances. The experimental results show that the maximum link voltage stress is about 450V at 270Vac input voltage. Moreover, efficiency and power factor are over $84\%$ and 0.95, respectively, under the full load condition.

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Bridgeless High Efficiency ZVZCS Power Factor Correction Circuit for PDP Power Module (PDP용 브리지가 없는 고효율 ZVZCS 역률개선회로)

  • Cho Kyu-Min;Yu Byung-Gyu;Moon Gun-Woo
    • Proceedings of the KIPE Conference
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    • 2004.07b
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    • pp.704-708
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    • 2004
  • Recently, many nation have released standard such as IEC 61000-3-2 and IEEE 59, which impose a limit on the harmonic current drawn by equipment connected to AC line in order to prevent the distortion of an AC Line. Therefore, Plasma Display Panel (PDP) which is highlightened in digital display device also has the Power Factor Correction (PFC) circuit to meet the harmonic requirements. In PDP power module, the conventional boost converter is usually used for the PFC circuit. However, it comes serious thermal problem on it's bridge diode due to heat of PDP, and therefore the system stability is not guaranteed. In this paper, the bridgeless boost converter, which is used for PFC circuit of the PDP power module, is designed and verified the possibility of the application in a practical product in a view of efficiency, component count, temperature and etc.

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Analysis of continuous conduction mode boost power-factor-correction circuit (부스트 방식 역률개선회로의 설계와 특성분석)

  • Kim, Cherl-Jin;Jang, Jun-Young;Kim, Sang-Duck;Song, Yo-Chang;Yoon, Shin-Yang
    • Proceedings of the KIEE Conference
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    • 2002.07b
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    • pp.1120-1122
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    • 2002
  • Switching power supply are widely used in many industrial field. Power factor improvement and harmonic reduction technique is very important in switching power supply. The power factor correction (PFC) circuit using boost converter used in input of power source is studied in this paper. It is analyzed distortional situations and harmonics of input currents that presented at continuous conduction mode(CCM) of boost PFC circuit. It is done simulations of harmonics distribution according to load variation by using PSPICE and MATLAB. From the actual experiment of boost PFC circuit the validity of the analysis is confirmed.

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Effects of Imperfect Sinusoidal Input Currents on the Performance of a Boost PFC Pre-Regulator

  • Cheung, Martin K.H.;Chow, Martin H.L.;Lai, Y.M.;Loo, K.H.
    • Journal of Power Electronics
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    • v.12 no.5
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    • pp.689-698
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    • 2012
  • This paper investigates the effects of applying different input current waveshapes on the performance of a continuous-conduction-mode (CCM) power-factor-correction (PFC) boost pre-regulator. It is found that the output voltage ripple of the pre-regulator can be reduced if the input current is modified to include controlled amount of higher order harmonics. This finding allows us to balance the performance of output regulation and the harmonic current emission when coming to the design of the pre-regulator. An experimental PFC boost pre-regulator prototype is constructed to verify the analysis and show the benefit of the pre-regulator operating with input current containing higher order harmonics.