Soft-Switching Zeta–Flyback Converter With a Buck–Boost Type of Active Clamp

Lin, Bor‐Ren; Hsieh, F.-Y.

doi:10.1109/tie.2007.901366

Cited by 120 publications

(7 citation statements)

References 17 publications

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“…The main drawback of these sustainable energy sources is that the output DC or AC voltage is not constant. To solve this problem, the soft switching high-frequency DC-DC converters have been developed by using switching frequency modulation [5,6], pulsewidth modulation (PWM) [7][8][9][10], active clamp PWM [11,12], and asymmetric PWM [13,14] schemes. The main drawbacks of active clamp PWM and asymmetric PWM schemes are the unbalance current and voltage stresses on the rectifier diodes.…”

Section: Introductionmentioning

confidence: 99%

Analysis of a Wide Voltage Hybrid Soft Switching Converter

Lin

Liu

2021

Electronics

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A hybrid PWM converter is proposed and investigated to realize the benefits of wide zero-voltage switching (ZVS) operation, wide voltage input operation, and low circulating current for direct current (DC) wind power conversion and solar PV power conversion applications. Compared to the drawbacks of high freewheeling current and hard switching operation of active devices at the lagging-leg of conventional full bridge PWM converter, a three-leg PWM converter is studied to have wide input-voltage operation (120–600 V). For low input-voltage condition (120–270 V), two-leg full bridge converter with lower transformer turns ratio is activated to control load voltage. For high input-voltage case (270–600 V), PWM converter with higher transformer turns ratio is operated to regulate load voltage. The LLC resonant converter is connecting to the lagging-leg switches in order to achieve wide load range of soft switching turn-on operation. The high conduction losses at the freewheeling state on conventional full bridge converter are overcome by connecting the output voltage of resonant converter to the output rectified terminal of full bridge converter. Hence, a 5:1 (600–120 V) hybrid converter is realized to have less circulating current loss, wide input-voltage operation and wide soft switching characteristics. An 800 W prototype is set up and tested to validate the converter effectiveness.

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Section: Introductionmentioning

confidence: 99%

Analysis of a Wide Voltage Hybrid Soft Switching Converter

Lin

Liu

2021

Electronics

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“…The significant energy in the converter is still trapped by its leakage inductance and results in high voltage stress of the switch and produces significant loss. Therefore to overcome the above problems many methods such as use of resistor capacitor diode, converters operating in discontinuous conduction mode [3][4] a passive lossless clamped circuit and use of additional snubbers had been suggested to reduce the voltage stresses of switches and to retrieve the energy trapped in the leakage inductor. A soft switching method is also used in dc-dc converter for high efficiency and to increase the power conversion density and high efficiency [5].…”

Section: Introductionmentioning

confidence: 99%

Performance enhancement analysis of an isolated DC-DC converter using fuzzy logic controller

Balaji¹,

Anand²,

Pandian³

2017

IJET

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High voltage gain dc-dc converters plays an major role in many modern industrialized applications like PV and fuel cells, electrical vehicles, dc backup systems (UPS, inverter), HID (high intensity discharge) lamps. As usual boost converter experiences a drawback of obtaining a high voltage at maximum duty cycle. Hence in order to increase the voltage gain of boost converter, this paper discusses about the advanced boost converter using solar power application. By using this technique, boost converter attains a high voltage which is ten times greater than the input supply voltage. The output voltage can be further increased to more than ten times the supply voltage by using a parallel capacitor and a coupled inductor. The voltage stress across the switch can be reduced due to high output voltage. The Converter is initially operated in open loop and then it is connected with closed loop. More over the fuzzy logic controller is used for the ripple reduction.

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“…Fossil fuels such as coal, oil, and natural gas are non-renewable, they draw on finite resources that will eventually dwindle, becoming too expensive or too environmentally damaging to retrieve [8][9][10][11][12]. In contrast, renewable energy resources-such as wind and solar energyare constantly replenished and will never run out.…”

Section: Introductionmentioning

confidence: 99%

“…Modern renewables such as hydro, wind, solar and biofuels, as well as traditional biomass are contributed in about equal parts to the global energy supply. Rapid development of renewable energy and energy efficiency is resulting in significant energy security, climate change mitigation and economic benefits [4][5][6][7].Fossil fuels such as coal, oil, and natural gas are non-renewable, they draw on finite resources that will eventually dwindle, becoming too expensive or too environmentally damaging to retrieve [8][9][10][11][12]. In contrast, renewable energy resources-such as wind and solar energyare constantly replenished and will never run out.…”

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confidence: 99%

A Comparative Analysis of Integrated Boost Flyback Converter using PID and Fuzzy Controller

Babu

2015

IJPEDS

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This paper presents a comparative analysis of Integrated boost flyback converter for Renewable energy System. IBFC is the combination of boost converter and fly back converter. The proposed converter is simulated in open and closed loop using PID and FUZZY controller. The Fuzzy Logic Controller (FLC) is used reduce the rise time, settling time to almost negligible and try to remove the delay time and inverted response. The performance of IBFC with fuzzy logic controller is found better instead of PID controller. The simulation results are verified experimentally and the output of converter is free from ripples and has regulated output voltage. Corresponding Author: Keyword: Fuzzy controllerR. Samuel Rajesh Babu Departement of Electronics and Instrumentation Engineering, Sathyabama University, Chennai-600 119, India. Email: dr.samuelrajeshbabu@gmail.com INTRODUCTIONRenewable energy is generally defined as energy that comes from resources which are naturally replenished on a human timescale such as sunlight, wind, rain, tides, waves and geothermal heat. Renewable energy replaces conventional fuels in four distinct areas such as electricity generation, hot water/space heating, motor fuels, and rural (off-grid) energy services [1][2][3]. Modern renewables such as hydro, wind, solar and biofuels, as well as traditional biomass are contributed in about equal parts to the global energy supply. Rapid development of renewable energy and energy efficiency is resulting in significant energy security, climate change mitigation and economic benefits [4][5][6][7].Fossil fuels such as coal, oil, and natural gas are non-renewable, they draw on finite resources that will eventually dwindle, becoming too expensive or too environmentally damaging to retrieve [8][9][10][11][12]. In contrast, renewable energy resources-such as wind and solar energyare constantly replenished and will never run out. For renewable energy systems, power electronics play a vital role. Sometimes they are the most expensive part of the system. Reducing cost, increasing efficiency and improving reliability of power electronics and electric machines are the technical challenges facing wider implementation of renewable energy power generation [13][14][15][16][17]. Renewable energy sources derive their energy from existing flow of energy, form on-going natural processes such as sun, wind, flowing water and geothermal heat flows. The most feasible alternative energy sources include solar, fuel cell and wind.Fossil fuels are depleting day by day, therefore it is imperative to find out alternative methods in order to fulfill the energy demand of the world. Renewable energy is becoming more important nowadays. There exist applications of renewable energy which employ hundred of MW (high power) and there are also those which uses hundred of W (low power). Applications can also be classified depending if they are connected to the grid or not, as well known as cogeneration and stand alone systems [18][19][20][21][22]. This last one is

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Soft-Switching Zeta–Flyback Converter With a Buck–Boost Type of Active Clamp

Cited by 120 publications

References 17 publications

Analysis of a Wide Voltage Hybrid Soft Switching Converter

Analysis of a Wide Voltage Hybrid Soft Switching Converter

Performance enhancement analysis of an isolated DC-DC converter using fuzzy logic controller

A Comparative Analysis of Integrated Boost Flyback Converter using PID and Fuzzy Controller

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