Dual buck-boost inverter

Khan, Ashraf Ali; Cha, Honnyong; Akbar, Fazal; Kim, Ki-Su; Lai, Jih‐Sheng

doi:10.1109/apec.2017.7930772

Cited by 8 publications

(5 citation statements)

References 15 publications

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“…In order to ensure the inductor L in is operated in discontinuous conduct mode, the input inductance can be designed according to Equation ( 19) from substituting Equations ( 11) into (18):…”

Section: Design Of Input Inductor (L In )mentioning

confidence: 99%

“…To overcome some of the aforementioned drawbacks, the interest in single-stage boost inverters has grown in recent literatures [3,4,[6][7][8][9][13][14][15][16][17][18][19]. Combining two bidirectional DC-DC boost converters, the conventional single-phase single-stage boost inverter is researched in [3,6], in which the load is differentially connected between the output terminals of the DC-DC boost converters.…”

Section: Introductionmentioning

confidence: 99%

“…The distributed generation (DG) systems are becoming important and prevalent due to the penetration of the renewable energy sources (RES) in recent years [1–26]. These DG systems are usually powered by micro sources such as photovoltaic (PV) systems, fuel cells, and batteries.…”

Section: Introductionmentioning

confidence: 99%

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A single‐stage step‐up inverter with reduced devices count

Liu

Zhang

et al. 2020

IET Power Electronics

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This study presents a single-phase single-stage step-up inverter (SSSI), which can be used as an interface converter in micro-source generation systems such as photovoltaic (PV) and fuel cells. The proposed inverter has several appealing features. (1) It can provide an AC output voltage higher than its DC input because of the built-in boost circuit. (2) It has characteristics of a simple structure and reduces the component counts and cost. (3) The shoot-through problem for the power devices can be avoided in the proposed SSSI. (4) metal-oxide-semiconductor field-effect transistors (MOSFETs) can be used without reverse recovery issues of body diodes. Therefore, high system reliability and efficiency can be obtained. This study describes the operating principles in discontinuous conduction mode (DCM), pulse-width modulation strategy, and parameter design guidelines. In order to verify the feasibility and performance of the converter, experimental results are obtained from a lab prototype.

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Section: Design Of Input Inductor (L In )mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A single‐stage step‐up inverter with reduced devices count

Liu

Zhang

et al. 2020

IET Power Electronics

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show abstract

“…Along with the growth, research of single‐phase inverter for photovoltaic application has been widely conducted to provide good quality power to grid and end users. One of the main research streams is a topological approach [4–36]. The single‐phase inverter topologies for photovoltaic applications can be divided into two major groups: transformer‐based and transformerless inverters.…”

Section: Introductionmentioning

confidence: 99%

“…Two dc–dc converter modules produce varying output voltages and the difference of module output voltages can synthesise a sinusoidal waveform. Cascaded dual buck, dual boost with dc output offsets, dual buck–boost inverters (DBBIs) are representative examples with step‐up ability [16–24]. Since the base dc–dc converters are well known for simple structures and mature control theories, differential inverters are able to achieve reliable and highly efficient operations under wide range of input voltage and power conditions [22].…”

Section: Introductionmentioning

confidence: 99%

Single inductor dual buck‐boost inverter based on half‐cycle PWM scheme with active clamping devices

Lee

Kim

Lai

2019

IET Power Electronics

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This paper presents a single-phase differential-type photovoltaic inverter named single inductor dual buck-boost inverter (SIDBBI) based on improved half-cycle PWM (HPWM). Conventional DBBI (CDBBI) is a good option for photovoltaic application due to step-up/down ability for varying inputs. However, inherent high inductor current and corresponding increments of inductor size and device ratings have made it less attractive than other topologies. This paper proposes an HPWM scheme with active clamping switches to reduce inductor voltage swing, highly induced current and component stresses by eliminating output voltages offsets. Under the proposed modulation, component voltage stresses in CDBBI can be reduced by zero offset, and there arises a chance to integrate half-utilized inductors, main switches and complementary diodes of two modules into one set, which is the proposed SIDBBI topology. 500 W prototypes of the conventional/proposed inverters have been built for verifications and comparison. Detailed analysis and experimental results under the proposed HPWM show that the size of SIDBBI can be reduced by 40.4% than CDBBI, maintaining comparable efficiency over 96% and wide input coverage by stepup/down ability. Comparative results address that SIDBBI is competitive in terms of component counts, stresses and losses, compared with various kinds of buck-boost inverter topologies.

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An Integrated Boost Micro-inverter for PV Generation System

Long

Fei

et al. 2022

Lecture Notes in Electrical Engineering

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Dual buck-boost inverter

Cited by 8 publications

References 15 publications

A single‐stage step‐up inverter with reduced devices count

A single‐stage step‐up inverter with reduced devices count

Single inductor dual buck‐boost inverter based on half‐cycle PWM scheme with active clamping devices

An Integrated Boost Micro-inverter for PV Generation System

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