Nonisolated High Step-up Boost Converter Integrated With Sepic Converter

Park, Ki-Bum; Moon, Gun-Woo; Youn, Myung-Joong

doi:10.1109/tpel.2010.2046650

Cited by 202 publications

(111 citation statements)

References 21 publications

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“…9. shows the efficiency curve of proposed high stepup converter and converter in [19] with similar components as a function of output power. The proposed converter has improved the efficiency because its voltage gain can be achieved by lower duty cycle and also the current is transferred to the SEPIC section in both switch turn-off and turn-on situations leading to lower conduction losses.…”

Section: Resultsmentioning

confidence: 99%

“…4(a) shows the voltage gain for various n. Fig. 4(b) compares the voltage gain of the proposed converter with the voltage gain of [19] and regular boost converter which shows the higher gain of the proposed converter.…”

Section: Co In D D T T T D T T Kmentioning

confidence: 98%

“…From (23), it is obvious that the voltage stress of diodes in the proposed converter is much less than the isolated SEPIC converter and the converter proposed in [19]. It is noticeable that the output diodes of the isolated SEPIC converter suffer from high voltage spike and for this reason an auxiliary clamp circuit is need.…”

Section: Voltage Stress Of the Semiconductor Devicesmentioning

confidence: 99%

“…In order to reach a high step-up converter having the benefits of the coupled-inductor-based boost converters, without large input current, some boost converters integrated with coupled inductor assisted auxiliary stepup circuits are proposed in [17][18][19] which are suitable for low-to-medium power applications. In these converters, the power should be processed twice; hence the conduction losses are significant.…”

Section: Introductionmentioning

confidence: 99%

“…In these converters, the power should be processed twice; hence the conduction losses are significant. In [19], the voltage stress of output diode is high and considering the number of components, the overall voltage gain is low and limited to the transformer turn-ratio.…”

Section: Introductionmentioning

confidence: 99%

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A Non-isolated High Step-up DC/DC Converter with Low EMI and Voltage Stress for Renewable Energy Applications

Baharlou¹,

Yazdani²

2017

Journal of Electrical Engineering and Technology

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-In this paper, a high step-up DC-DC PWM converter with continuous input current and low voltage stress is presented for renewable energy application. The proposed converter is composed of a boost converter integrated with an auxiliary step-up circuit. The auxiliary circuit uses an additional coupled inductor and a balancing capacitor with voltage doubler and switching capacitor technique to achieve high step-up voltage gain with an appropriate switch duty cycle. The switched capacitors are charged in parallel and discharged in series by the coupled inductor, stacking on the output capacitor. In the proposed converter, the voltage stress on the main switch is clamped, so a low voltage switch with low ON resistance can be used to reduce the conduction loss which results in the efficiency improvement. A detailed discussion on the operating principle and steady-state analyses are presented in the paper. To justify the theoretical analysis, experimental results of a 200W 40/400V prototype is presented. In addition, the conducted electromagnetic emissions are measured which shows a good EMC performance.

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Section: Resultsmentioning

confidence: 99%

Section: Co In D D T T T D T T Kmentioning

confidence: 98%

Section: Voltage Stress Of the Semiconductor Devicesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Non-isolated High Step-up DC/DC Converter with Low EMI and Voltage Stress for Renewable Energy Applications

Baharlou¹,

Yazdani²

2017

Journal of Electrical Engineering and Technology

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Energy management of distributed renewable energy sources for residential DC microgrid applications

Kathiresan¹,

Natarajan²,

Gnanavadivel³

2019

Int Trans Electr Energ Syst

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This paper proposes a low voltage (400 Vdc) distributed renewable energy fed DC microgrid structure for a residential system, which uses DC voltage for the electronic appliances. The distributed energy sources—solar photovoltaic (PV) and wind energy are considered as input sources. The output power from these sources is stochastic in nature. An efficient energy management and switching circuit is designed to control the power flow from the sources with a high gain DC‐DC converter as the main component. The output power regulation is achieved by means of controlling duty ratios of the switches in the proposed high gain converter through PI controller. The control algorithm effectively converts the unregulated DC power from the solar PV and wind into regulated DC for driving a DC load connected in DC‐microgrid. The energy management and switching circuits account for seamless operation of the DC microgrid under various modes when one or all the sources and loads are connected directly at the DC grid link. The designed energy management and switching circuit also ensures the power balancing in the proposed system. The proposed DC microgrid structure is simulated using MATLAB Simulink. The performance of the proposed high gain converter for the DC grid link voltage regulation is analyzed under source power variation and dynamic changes in load for various operating conditions. The proposed DC microgrid structure is validated using simulation results.

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