An extended high-voltage-gain DC–DC converter with reduced voltage stress on switches/diodes

Pourfarzad, Hamed; Saremi, Mohammad; Jalilzadeh, Tohid

doi:10.1007/s00202-020-01040-4

Cited by 26 publications

(23 citation statements)

References 27 publications

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“…Moreover, switching losses and current ripples are increased at a higher duty ratio in conventional boost converter [4]. Consequently, the transient response is negatively affected and the output side diode experiences a severe reverse recovery issue which ultimately adds up to the loss and voltage/current stress on the devices [5]- [7]. Therefore, coming up with some converter topologies, which would be able to impart high voltage gain at a lower duty ratio and having a wider control range of duty ratio are the main concerns of this paper.…”

Section: Introductionmentioning

confidence: 99%

“…The most commonly reported non-isolated converters available in the literature include the different design of switched inductors, switched capacitors, coupled inductors, or combined structure type of converters [13]. Switchedcapacitor based converters not only raise the voltage gain but also possess more immunity against EMI owed to its inductor-free structure [5]. However, these converters suffer from input current ripples and weak voltage regulation during large load variations.…”

Section: Introductionmentioning

confidence: 99%

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Voltage Lift Switched Inductor Double Leg Converter With Extended Duty Ratio for DC Microgrid Application

et al. 2021

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In a DC microgrid, while integrating the low voltage sources such as Fuel cells and photovoltaics, an efficient DC-DC converter is crucially needed. Contributing to a high voltage whilst being operated on a low duty ratio is among the demanded features of the converter. For high voltage applications, the conventional converters are to be operated beyond the prescribed range of the duty ratio which may result in various detrimental effects such as voltage spikes, increased current ripples, and reduced efficiency. In this paper, a voltage lift switched inductor double leg converter (VLSIDL) has been proposed. This novel converter has the feature of attaining a very high voltage without using any complex circuitry such as transformer, multiple voltage lift circuits, cascaded or parallel structure, etc. This particular converter has three switches that are operated in three modes with two different duty ratios. Double duty control offers flexibility in the selection of duty ratio for a particular output voltage and a significantly high gain is easily attained. The double duty ratio not only provides an extended range but also improves the efficiency and performance of the converter. The steady-state analysis of the proposed converter is done analytically and the same is verified through the hardware prototype.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Voltage Lift Switched Inductor Double Leg Converter With Extended Duty Ratio for DC Microgrid Application

et al. 2021

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“…In general high step-up DC-DC converters are proposed to improve the voltage transmission ratio [1], [9]- [13]. Literature [12] proposed a high step-up boost converter, which employs charge-pump and voltage multiplier cells to obtain high voltage ratio. Literatures [13] adopt two switched-capacitor cells and one energy storage cell to construct the high voltage gain DC-DC converter.…”

Section: Introductionmentioning

confidence: 99%

A Four-Phase Interleaved Buck-Boost Converter With Changed Load Connection for the Fuel Cell Activation

Wang

Peng

et al. 2021

IEEE Access

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When the fuel cell (FC) is being activated before used in industrial applications, a power conditioner is needed to interface the FC with the load. Due to low current ripples, high output power, and simple structure, the multi-phase interleaved non-isolated DC-DC converter is most suitable for the power conditioner. This paper proposed, analyzed and designed a four-phase interleaved buck-boost converter with changed load connection (CLC-FIBC) for the FC activation with characteristics as simple structure, wide input current, high current, and low current ripples. The operating principle and mathematical model of the CLC-FIBC were firstly analyzed, derived and presented, and then mathematical equations of transistor voltage stress and inductor current ripple are derived respectively. Besides, this CLC-FIBC was compared with several DC-DC converters to prove the superiority. The simulation and experimental prototype was built to validate the theoretical analysis after presenting some design considerations. Simulation and experimental results show that the CLC-FIBC has characteristics of both step up/down function, high power, wide input current range, and low current ripples.INDEX TERMS Multiphase interleaved, buck-boost converter, changed load connection, fuel cell.

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“…Renewable sources are increasingly used due to environmental concerns and technological advances [1][2][3][4]. However, the intermittent nature of these sources and the unpredictability of load demand poses a challenge to the widespread development of these energy sources [5,6].…”

Section: Introductionmentioning

confidence: 99%

Design, analysis and implementation of a new three‐port DC‐DC converter with bidirectional capability

Jalilzadeh

Rostami

Babaei

et al. 2021

IET Power Electronics

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The proposed converter here is a dual-input DC-DC converter with bidirectional power flow. One of the inputs is unidirectional, while the other is a bidirectional port for a battery. The proposed converter can combine two alternating sources with different characteristics. The demanded power of the load can be provided by each input source individually or simultaneously. What is more, the unidirectional port can charge the battery as well as power the output load. Due to the bidirectional capability, the energy returned from the output can be stored in the battery which is suitable for electric vehicle (EV) applications.Step-up capability, the low voltage stress on semiconductors, and the smaller number of passive elements are the other advantages of the converter. Depending on the battery usage status, four different operation scenarios are defined in the proposed converter. The converter operation is described in each scenario and the mathematical analysis is presented. Based on these, the experimental prototype is conducted to verify the characteristics and feasibilities of the converter.

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An extended high-voltage-gain DC–DC converter with reduced voltage stress on switches/diodes

Cited by 26 publications

References 27 publications

Voltage Lift Switched Inductor Double Leg Converter With Extended Duty Ratio for DC Microgrid Application

Voltage Lift Switched Inductor Double Leg Converter With Extended Duty Ratio for DC Microgrid Application

A Four-Phase Interleaved Buck-Boost Converter With Changed Load Connection for the Fuel Cell Activation

Design, analysis and implementation of a new three‐port DC‐DC converter with bidirectional capability

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