Switched-LC Based High Gain Converter With Lower Component Count

Kumar, Abhishek; Wang, Yi; Pan, Xuewei; Raghuram, M.; Singh, Santosh Kumar; Xiong, Xiaogang; Tripathi, Abhishek Kumar

doi:10.1109/tia.2020.2980215

Cited by 40 publications

(35 citation statements)

References 26 publications

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“…High gain at a lower duty ratio reduces the current stress of the converter. The voltage gain of converters in [27], [11] is slightly higher than the proposed topology when it is operated at duty ratio values close to D=0.8 but the switch stress is also high at these extreme values of the duty ratio. The plot of voltage stress vs the voltage gain is shown in Figure 17.…”

Section: Performance Analysis With Similar Convertersmentioning

confidence: 71%

“…The converter in [8], adopts two switches and four inductors but its voltage gain is found to be lower than the proposed converter. The converter in [11] also has a lower voltage gain and higher switch stress than the proposed topology. The converter in [18] uses a total of four inductors which makes the converter bulky and the voltage gains are also low.…”

Section: Performance Analysis With Similar Convertersmentioning

confidence: 96%

“…Further, the inductor core is more prone to enter saturation at higher duty cycles. In [11] a new quadratic boost converter is proposed with lower inductor current ripple and low stress across the switch. Another class of high gain boost converter is a quasi-z-source or z-source converter that is used to increase the gain of the converter where the inductor is replaced by an impedance network but these converters have a restricted duty cycle [12], [13] operation.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A New Transformerless Ultra High Gain DC–DC Converter for DC Microgrid Application

Khan

Zaid²,

Mahmood

et al. 2021

IEEE Access

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High gain dc-dc converters are used in several applications which include solar photovoltaic system, switch-mode power supplies and fuel cells. In this paper, an ultra-high gain dc-dc boost converter is proposed and analysed in detail. The converter has a gain of six times as compared with the boost converter. The high gain is achieved by utilizing switched inductors and switched capacitors. A modified voltage multiplier cell (VMC) with switched inductors is proposed. The converter has a single switch which makes its operation easy. Moreover, the voltage across the switch, diodes and capacitors are less than the output voltage which increases the overall efficiency of the converter. The converter performance in steady-state is analysed in detail and it is compared with other latest high gain converters. The working of the converter in non-ideal conditions is also discussed in detail. The loss analysis is done using PLECS software by incorporating the real models of switches and diodes from the datasheet. To confirm and validate the working of the proposed converter a hardware prototype of 200 W is developed in the laboratory. The converter achieves high gain at low duty ratios and its performance is found to be good in open and closed loop conditions. INDEX TERMSBoost Converter, DC Microgrid, Duty cycle, Ultra High Gain, Voltage stress Battery Fuel Cell High Gain DC-DC Converter Solar PV Cell Low DC Voltage (12-60V) High DC Voltage (200 -300V

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Section: Performance Analysis With Similar Convertersmentioning

confidence: 71%

Section: Performance Analysis With Similar Convertersmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A New Transformerless Ultra High Gain DC–DC Converter for DC Microgrid Application

Khan

Zaid²,

Mahmood

et al. 2021

IEEE Access

View full text Add to dashboard Cite

show abstract

“…Solving the Equation-(23), Equation- (24) and Equation- (26), following inequality results K > K crit (27) where…”

Section: Design Considerationmentioning

confidence: 99%

“…Therefore, there is a danger that converter may enter into inductor current saturation for duty cycle > 0.5 which dramatically deteriorates the performance of the converter. Recently, several DC-DC converters are proposed such as Z-source based [17]- [21], 3 Z network [22] and A high gain network [23], double switch based DC DC converter [24], switched capacitor based converter [25] etc. to reduce the duty cycle range.…”

Section: Introductionmentioning

confidence: 99%

Switched Inductor Double Switch High Gain DC-DC Converter for Renewable Applications

et al. 2021

Self Cite

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High voltage gain DC-DC converter is a prime requirement for renewable applications, in particular for PV. Though numerous DC-DC converter is available for increasing the voltage gain, the passive elements requirement is higher which reduces the compactness, consequently, increases the cost of the system. To address this issue, a high gain DC-DC converter is reported recently. However, the number of passive elements is quite high which increases the size. To reduce the number of passive elements and maintain the same number of semiconductor devices, in this paper, a new switched inductor arrangement is proposed which is named as switched inductor double switch DC-DC converter (SL-DS-DC). Moreover, the proposed converter has a higher gain as compared to the recently reported converter. The proposed converter is analyzed in steady state and a comparative analysis is presented to prove the suitability. Finally, the proposed converter is validated experimentally. INDEX TERMS High voltage gain, non isolated, DC-DC converter, switched inductor, CCM.

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A high step‐up DC–DC converter with active switched LC‐network and voltage‐lift circuit: Topology, operating principle, and implementation

Dastgiri

Hosseinpour

Sedaghati

et al. 2021

Circuit Theory & Apps

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To meet the higher DC link voltage requirement in distributed energy resources (DERs) such as fuel cells (FCs), wind turbines (WTs), and photovoltaic (PV) systems, DC–DC converters are applied. A voltage‐lift (VL) circuit‐based transformer‐less active switched LC‐network (ASLC) converter with a high‐voltage gain is proposed in this paper. Compared to a similar reference converter, the voltage gain of the proposed converter increases efficiently by adding one extra capacitor and diode. The operation of the converter in continuous current mode (CCM) and discontinuous current mode (DCM), the analysis of the steady‐state condition, and comparative analysis with some similar converters are discussed. Moreover, the parasitic elements are assumed to calculate the DC‐voltage gain and the efficiency of the converter accurately. The performance of the proposed step‐up converter is simulated in the PSIM software. A prototype circuit rating of about 20/280 V, 200 W of converter model is designed, and its performance is validated. The experimental outcomes clarify the feasibility of the proposed converter.

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Switched-LC Based High Gain Converter With Lower Component Count

Cited by 40 publications

References 26 publications

A New Transformerless Ultra High Gain DC–DC Converter for DC Microgrid Application

A New Transformerless Ultra High Gain DC–DC Converter for DC Microgrid Application

Switched Inductor Double Switch High Gain DC-DC Converter for Renewable Applications

A high step‐up DC–DC converter with active switched LC‐network and voltage‐lift circuit: Topology, operating principle, and implementation

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