Switched-Capacitor-Inductor Active-Switched Boost Inverters With High Boost Ability

Huynh, Anh-Tuan; Ho, Anh-Vu; Chun, Tae-Won

doi:10.1109/access.2021.3097371

Cited by 9 publications

(10 citation statements)

References 33 publications

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“…As can be observed, the suggested topology has the lowest average SDP value, with the exception of [16]. In addition, its peak SDP value is smaller than [22] and [18]. The obtained results indicate that the proposed topology is a cost-effective and SDP-compliant option.…”

Section: F Switching Device Power (Sdp) Calculation and Comparisonmentioning

confidence: 69%

“…As with voltage stresses, the proposed topology has excellent performance in this instance. In the meantime, although the shoot-through current of the proposed topology like [22] is greater than that of the others, it has the lowest current stress in the additional switch, which reduces the switch losses and improves efficiency.…”

Section: Comparison Of the Current And Voltage Stressmentioning

confidence: 98%

“…In contrast, as shown in Table II, this topology employs fewer or an equal number of components compared to other similar topologies. The only [22] has a smaller capacitor, but it does not share a common ground between input and output terminals and instead employs numerous diodes.…”

Section: A Comparison Of the Number Of Elementsmentioning

confidence: 99%

“…The SC technique employs a lesser number of DC sources in accordance with the voltage across the capacitor [11]. Based on how the impedance network formed by combining passive and active elements with the new active switch, [12]- [22] present a series of high-gain switch boost inverters. The topologies presented in [12] and [13] are based on the switched capacitor technique, and despite having a high gain, they employ a large number of components.…”

Section: Introductionmentioning

confidence: 99%

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Two New Common Ground Extended-Boost Active Quasi Z-Source Inverter With Reduced Passive Components

Naderi

Rastegar

2023

IEEE Access

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A high voltage gain inverter is a critical component of any high voltage power system, which feeds from a limited DC source. Numerous inventive solutions proposed to increase the boost factor. However, many of them have a large number of components and no short circuit immunity. While retaining the inherent characteristics of conventional quasi Z-source inverters (qZSI) with fewer components, this paper proposes two new active impedance source inverters based on qZSIs that utilize an additional active switch. In addition to the inherent benefits of qZSIs, the proposed topologies have a higher boost capability. They have an additional degree of freedom that allows the voltage ratio of the capacitors adjusted to any desired value without affecting the gain of the converter. They can also control the dc-link voltage without being fully dependent on the shoot-through time duration, resulting in a higher utilization factor for the dclink. Additionally, the proposed topologies establish a common-ground connection between the input and output terminals, which is useful for some applications. In order to drive the inverters' boost factor, the operation and steady-state analysis described. Furthermore, the comparative analysis done to illustrate the features of proposed topologies. Finally, a simulation and experimental analysis carried out to validate that the proposed inverters are feasible.

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Section: F Switching Device Power (Sdp) Calculation and Comparisonmentioning

confidence: 69%

Section: Comparison Of the Current And Voltage Stressmentioning

confidence: 98%

Section: A Comparison Of the Number Of Elementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Two New Common Ground Extended-Boost Active Quasi Z-Source Inverter With Reduced Passive Components

Naderi

Rastegar

2023

IEEE Access

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“…The number of elements in the conventional and proposed topologies is provided in Table 2. Based on this Table, it is observed that topologies in [8–9], [17] and [31–32], despite a lower boost factor than the proposed topology, have more storage elements in their Z‐source networks. In topologies presented in [4], [23], and [25–26], the number of storage elements is equal to the proposed topology.…”

Section: Comparison Of the Proposed Topology With The Conventional To...mentioning

confidence: 99%

Analysis, design, and implementation of switched Z‐source inverter with an extra control input

Zarei

Babaei

Sharifian

2023

IET Power Electronics

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The current study proposes a topology for switched Z‐source inverter. In the switching method used for this structure, unlike the conventional, the active network switches’ duty cycle is not equal to the shoot‐through duty cycle. So, in addition to the shoot‐through duty cycle, the duty cycle of impedance network switches is also involved in the boost factor. Besides, by extracting the small‐signal model, it is observed that the proposed topology has two control inputs on the dc‐side. The advantage of the additional control input is demonstrated by designing a closed‐loop control for the case where the inverter is used as an interface between the photovoltaics (PV) and the grid. In addition, the steady‐state analysis in different operating modes and the switching pattern are presented for the proposed topology. Comparing the number of elements and the boost factor of the proposed topology with several conventional topologies indicates that besides the control advantage, this topology has a higher voltage gain. Finally, simulation and experimental results are presented to verify theoretical discussions of the proposed inverter.

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A transformerless common ground‐based 1‐ϕ single‐stage switched boost inverter for solar photovoltaic applications

Rage,

Sahoo,

Thirumala

et al. 2023

Circuit Theory & Apps

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This paper proposes a transformerless common ground based single phase single‐stage switched boost inverter for solar photovoltaic (PV) applications. In the proposed inverter, the input DC source and output AC load share a common ground. As a result, the high‐frequency common mode voltage across the parasitic capacitance is eliminated, resulting in negligible leakage current ( ) and the associated power loss, and harmonics in the inverter. Moreover, the higher voltage gain of the inverter facilitates the inverter to operate with high modulation index and lower shoot through (ST) duty ratio. Hence, the DC link voltage requirement across the inverter leg is reduced. Consequently, the voltage stress across the switches is minimized. Here, a modified PWM control technique is adopted, where the dual active states of the proposed inverter reduce the inductor current ripple and make it suitable for solar PV applications. The voltage boosting capability of the proposed inverter is extendable with the help of an additional number of intermediate impedance sub‐networks. The detailed steady‐state analysis of the proposed inverter is verified with the help of MATLAB simulation. To verify the simulation results, a 200 W, 120 V, and 50 Hz experimental prototype is developed. The prototype is tested for unity and lagging power factor load conditions with a wide range of input DC voltages, and all the major results are included in the paper. The power and thermal loss analysis is carried out using PLECS software, and the results show that the inverter has a maximum efficiency of 97.48%. From the experimental results, it can be inferred that the proposed inverter has a higher modulation index, lesser inductor current ripple, and zero leakage current as compared to the contemporary inverters.

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Switched-Capacitor-Inductor Active-Switched Boost Inverters With High Boost Ability

Cited by 9 publications

References 33 publications

Two New Common Ground Extended-Boost Active Quasi Z-Source Inverter With Reduced Passive Components

Two New Common Ground Extended-Boost Active Quasi Z-Source Inverter With Reduced Passive Components

Analysis, design, and implementation of switched Z‐source inverter with an extra control input

A transformerless common ground‐based 1‐ϕ single‐stage switched boost inverter for solar photovoltaic applications

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