• Title/Summary/Keyword: Half-Bridge Boost Converter

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Buck-Boost Interleaved Inverter Configuration for Multiple-Load Induction Cooking Application

  • Sharath Kumar, P.;Vishwanathan, N.;Bhagwan, K. Murthy
    • Journal of Electrical Engineering and Technology
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    • v.10 no.1
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    • pp.271-279
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    • 2015
  • Induction cooking application with multiple loads need high power inverters and appropriate control techniques. This paper proposes an inverter configuration with buck-boost converter for multiple load induction cooking application with independent control of each load. It uses one half-bridge for each load. For a given dc supply of $V_{DC}$, one more $V_{DC}$ is derived using buck-boost converter giving $2V_{DC}$ as the input to each half-bridge inverter. Series resonant loads are connected between the centre point of $2V_{DC}$ and each half-bridge. The output voltage across each load is like that of a full-bridge inverter. In the proposed configuration, half of the output power is supplied to each load directly from the source and remaining half of the output power is supplied to each load through buck-boost converter. With buck-boost converter, each half-bridge inverter output power is increased to a full-bridge inverter output power level. Each half-bridge is operated with constant and same switching frequency with asymmetrical duty cycle (ADC) control technique. By ADC, output power of each load is independently controlled. This configuration also offers reduced component count. The proposed inverter configuration is simulated and experimentally verified with two loads. Simulation and experimental results are in good agreement. This configuration can be extended to multiple loads.

Failure Prediction Monitoring of DC Electrolytic Capacitors in Half-bridge Boost Converter (단상 하프-브리지 부스트 컨버터에서 DC 전해 커패시터의 고장예측 모니터링)

  • Seo, Jang-Soo;Shon, Jin-Geun;Jeon, Hee-Jong
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.63 no.4
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    • pp.345-350
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    • 2014
  • DC electrolytic capacitor is widely used in the power converter including PWM inverter, switching power supply and PFC Boost converter system because of its large capacitance, small size and low cost. In this paper, basic characteristics of DC electrolytic capacitor vs. frequency is presented and the real-time estimation scheme of ESR and capacitance based on the bandpass filtering is adopted to the single phase boost converter of uninterruptible power supply to diagnose its split dc-link capacitors. The feasibility of this real-time failure prediction monitoring system is verified by the computer simulation of the 5[kW] singe phase PFC half-bridge boost converter.

Boost-Half Bridge Single Power Stage PWM DC- DC Converters for PEM-Fuel Cell Stacks

  • Kwon, Soon-Kurl;Sayed, Khairy F.A.
    • Journal of Power Electronics
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    • v.8 no.3
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    • pp.239-247
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    • 2008
  • This paper presents the design of 1 kW prototype high frequency link boost half bridge inverter-fed DC-DC power converters with bridge voltage-doublers suitable for small scale PEM fuel cell systems and associated control schemes. The operation principle of this converter is described using fuel cell modeling and some operating waveforms. The switching mode equivalent circuits are based on simulation results and a detailed circuit operation analysis at soft-switching conditions.

Power Factor Correction of Single-phase Boost Converter for Low-cost Type UPS Configuration (저 가격형 UPS를 구성하기 위한 단상 부스트 컨버터의 고 역률 제어)

  • Park, Jong-Chan;Shon, Jin-Geun
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.62 no.3
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    • pp.145-150
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    • 2013
  • A novel AC to DC PWM converters with unity input power factor are proposed to overcome the above shortcoming. The main function of these converters is to shape the input line current to force it exactly in phase with the input AC voltage. Therefore, the input power factor can be improved to near unity and the input current harmonics can be eliminated. In this paper, half-bridge converter with two active switches and two diodes are utilized for low-cost type UPS configuration. By having only two semiconductors in the current path at any time, losses can be reduced over the conventional boost topology. Also, this converter provides controllable dc-link voltage, high power factor, and low cost type converter by simple power circuits. Simulation results show that the proposed half-bridge converter/inverter control technique can be applied to single-phase low-cost type UPS systems successfully.

New PCS Applied High Boost Ratio Dual Converter and Single Phase Half Bridge Inverter (고승압 듀얼 컨버터와 단상 하프 브릿지 인버터를 적용한 새로운 PCS)

  • Lee, Hee-Jun;Shin, Soo-Choel;Hyun, Seung-Wook;Jung, Yong-Chae;Won, Chung-Yuen
    • The Transactions of the Korean Institute of Power Electronics
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    • v.18 no.6
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    • pp.515-522
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    • 2013
  • In this paper, a new PCS is proposed which is consisted of high boost dual converter and single phase half-bridge inverter. The proposed PCS is configured in parallel input / serial output, using two interleaved voltage doubler converter. Converter of the proposed PCS is distribute input current by configuring parallel input and reduced turn ratio of transformer by configuring serial output. Also, compositions of the inverter are composed of serial output capacitor of converter and half-bridge inverter. The dual converter and single phase half-bridge inverter is designed and characteristic of the new PCS is analysed. The system of the 1.5[kW] PCS is verified through an experimental about operation and stability.

A Study on Characteristic Estimation of Single-Stage High Frequency Resonant DC-DC (단일 전력단 고주파 공진 DC-DC 컨버터의 특성평가에 관한 연구)

  • Won, Jae-Sun;Park, Jae-Wook;Nam, Seung-Sik;Sim, Kwang-Yeal;Lee, Bong-Seob;Kim, Dong-Hee
    • Proceedings of the KIEE Conference
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    • 2003.04a
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    • pp.318-320
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    • 2003
  • This paper presents a novel single-stage high frequency resonant DC-DC converter using zero voltage switching with high input power factor. The proposed high frequency resonant converter integrates half-bridge boost rectifier as power factor corrector (PFC) and half-bridge resonant converter into a single stage. The input stage of the half-bridge boost rectifier is working in discontinuous conduction mode(DCM) with constant duty cycle and variable switching frequency. So that a high power factor is achieved naturally. Simulation results through the Pspice have demonstrated the feasibility of the Proposed DC-DC converter. This proposed converter will be able to be practically used as a power supply in various fields as induction heating applications, DC-DC converter etc.

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Characteristic Estimation of Single-Stage High Frequency Resonant Inverter Link Type DC-DC Converter (단일 전력단 고주파 공진 인버터 링크형 DC-DC 컨버터의 특성평가)

  • Won, Jae-Sun;Kim, Hae-Jun;Park, Jae-Wook;Nam, Seung-Sik;Seo, Cheol-Sik;Kim, Dong-Hee
    • Proceedings of the KIEE Conference
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    • 2003.07b
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    • pp.1190-1192
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    • 2003
  • This paper presents a novel single-stage high frequency resonant inverter link type DC-DC converter using zero voltage switching with high input power factor. The proposed high frequency resonant converter integrates half-bridge boost rectifier as power factor corrector (PFC) and half-bridge resonant converter into a single stage. The input stage of the half-bridge boost rectifier is working in discontinuous conduction mode(DCM) with constant duty cycle and variable switching frequency. So that boost converter make the line current follow naturally the sinusoidal line voltage waveform. Experimental results have demonstrated the feasibility of the proposed DC-DC converter. This proposed converter will be able to be practically used as a power supply in various fields as induction heating applications, DC-DC converter etc.

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An Asymmetric Half-Bridge Converter with Reduced Transformer Offset Current in Wide Input Voltage Range (넓은 입력 전압 범위에서 작은 트랜스포머 오프셋 전류를 가지는 비대칭 하프-브리지 컨버터)

  • Han, Jung-Kyu;Kim, Jong-Woo;Moon, Gun-Woo
    • The Transactions of the Korean Institute of Power Electronics
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    • v.22 no.5
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    • pp.431-439
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    • 2017
  • An asymmetric half-bridge is one of the most promising topology in low-power application because of its small number of components and inherent zero-voltage switching capability. However, when it is designed taking into a hold-up time, it has large transformer offset current and small transformer turns-ratio, which severely decreases the total efficiency of s converter. In this paper, a new boost-integrated asymmetric half-bridge converter is proposed to solve these problems. The integrated boost converter compensates the hold-up time, thus facilitating optimal design in nominal state. As a result, the proposed converter can achieve high efficiency in nominal state. To verify the effectiveness of the proposed converter, an experiment is conducted using a 250-400 V input and 45 V/3.3 A output prototype.

Fuel Cell Generation System Combined Interleaved Full-bridge Converter with Half-bridge Inverter (인터리브드 풀브릿지 컨버터와 하프브릿지 인버터를 결합한 연료전지 발전 시스템)

  • Kim, Heon-Hee;Lee, Hee-Jun;Shin, Soo-Chul;Jung, Yong-Chae;Won, Chung-Yuen
    • Proceedings of the KIPE Conference
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    • 2012.07a
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    • pp.518-519
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    • 2012
  • This paper suggested a fuel cell generation system which combined interleaved full-bridge converter with half-bridge inverter. High ratio step-up converter is essential to use the power as general voltage source. Full-bridge converter has high efficiency and can boost the input voltage to high output with transformer. With series connected capacitors, interleaved full-bridge converter and half-bridge inverter are combined. Half-bridge inverter has two fewer switches compared to full-bridge type. Also, switching loss can be reduced. The performance is verified through simulation with 1.5[kW] fuel cell generation system.

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Design of 1.5kW PCS Using Interleaved Full-Bridge Converter and Single Phase Half-Bridge Inverter (인터리브드 풀 브릿지 컨버터와 단상 하프 브릿지 인버터를 이용한 1.5kW급 PCS 설계)

  • Na, Kwang-Su;Na, Jong-Kuk;Lee, Hee-Jun;Shin, Soo-Cheol;Won, Chung-Yuen
    • Proceedings of the KIPE Conference
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    • 2013.07a
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    • pp.403-404
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    • 2013
  • In this paper, a PCS which consists of high boost interleaved full-bridge converter and single phase half-bridge inverter is proposed. Proposed PCS is using two full bridge converter modules. PCS consists of parallel input / serial output. It can reduce turn ratio of high frequency transformer. In this paper, PCS which is using 1.5[kW] interleaved full-bridge converter and single phase half bridge inverter is designed and verified stability of system through experiment.

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