Design and Implementation of New Topology for Nonisolated DC–DC Microconverter with Effective Clamping Circuit

Premkumar, M.; Sumithira, T. R.

doi:10.1142/s0218126619500828

Cited by 16 publications

(10 citation statements)

References 13 publications

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“…The remaining 10 V is clamped using the RCD clamp circuit, and the voltage stress across the clamp diode (V Dc ) is shown in Figure 12c. The maximum current stress of the MOSFET switch at a 0.5 duty cycle is calculated using Equation (29), and is equal to 4 A. The same can be noticed from Figure 12b.…”

Section: Simulation Resultssupporting

confidence: 53%

See 1 more Smart Citation

Design and Development of Non-Isolated Modified SEPIC DC-DC Converter Topology for High-Step-Up Applications: Investigation and Hardware Implementation

Premkumar¹,

Subramaniam

Alhelou

et al. 2020

Energies

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A new non-isolated modified SEPIC front-end dc-dc converter for the low power system is proposed in this paper, and this converter is the next level of the traditional SEPIC converter with additional devices, such as two diodes and splitting of the output capacitor into two equal parts. The circuit topology proposed in this paper is formulated by combining the boost structure with the traditional SEPIC converter. Therefore, the proposed converter has the benefit of the SEPIC converter, such as continuous input current. The proposed circuit structure also improves the features, such as high voltage gain and high conversion efficiency. The converter comprises one MOSFET switch, one coupled inductor, three diodes, and two capacitors, including the output capacitor. The converter effectively recovers the leakage energy of the coupled inductor through the passive clamp circuit. The operation of the proposed converter is explained in continuous conduction mode (CCM) and discontinuous conduction mode (DCM). The required voltage gain of the converter can be acquired by adjusting the coupled inductor turn’s ratio along with the additional devices at less duty cycle of the switch. The simulation of the proposed converter under CCM is carried out, and an experimental prototype of 100 W, 25 V/200 V is made, and the experimental outcomes are presented to validate the theoretical discussions of the proposed converter. The operating performance of the proposed converter is compared with the converters discussed in the literature. The proposed converter can be extended by connecting voltage multiplier (VM) cell circuits to get the ultra-high voltage gain.

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Section: Simulation Resultssupporting

confidence: 53%

“…However, due to the many components, the power losses are higher than with other converters [27,28]. The authors of [29] proposed a converter with different types of clamp circuit to reduce the voltage spikes of the MOSFET switch. However, the converter efficiency is low under full-load conditions due to its passive clamp structure.…”

Section: Introductionmentioning

confidence: 99%

Design and Development of Non-Isolated Modified SEPIC DC-DC Converter Topology for High-Step-Up Applications: Investigation and Hardware Implementation

Premkumar¹,

Subramaniam

Alhelou

et al. 2020

Energies

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“…The PV panel specification is given as follows; V mp = 40 V, I mp = 5 A, V oc = 47.8 V, I sc = 6.2 A, P mp = 200 W, and number of PV cells = 72. The commonly used dc-dc boost converter is designed as per [48], and design parameters of the converter are as follows: f s = 100 kHz, V in = (24-150 V), V out = 388 V, L dc = 1.7 mH, C out = 100 μF, 450 V (electrolytic), and ripple voltage is assumed as less than 1%. The load resistance is selected as 22 .…”

Section: Resultsmentioning

confidence: 99%

A novel salp swarm assisted hybrid maximum power point tracking algorithm for the solar photovoltaic power generation systems

Premkumar¹,

Kumar²,

Sowmya

et al. 2020

Automatika

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The photovoltaic (PV) systems must work at the maximum power point (MPP) to derive the highest possible power with the higher performance during a change in operating conditions. The primary objective is to implement a novel hybrid tracking algorithm to extract the maximum output power from the solar PV panel or array under partial shading conditions (PSCs). This hybrid MPP tracking algorithm is based on the salp swarm algorithm (SSA), which finds the initial global peak (GP) operating point and is followed by the perturb and observation (P&O) algorithm in the last stage to realize a faster convergence rate. Thus, the computational burden met by the conventional methods such as standalone P&O, hybrid grey-wolf-optimization (HGWO), and hybrid whale-optimization algorithm (HWOA) algorithm reported in the literature is overcome by the proposed hybrid SSA algorithm called HSSA. The P&O algorithm searches the MPP in the projected search space by the SSA algorithm. The proposed hybrid algorithm is simulated using MATLAB/Simulink simulation tool to validate the effectiveness of tracking the MPP. The hybrid SSA is compared with the standalone P&O, hybrid WOA, and hybrid GWO, and from the simulation results, it is proved that the hybrid tracking algorithm exhibits a high tracking performance.

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“…The most common topologies used in such applications are conventional boost [6], interleaved boost [7], quadratic boost [8], zsource boost [9,10], voltage-multiplier cells [11][12][13][14][15][16][17][18][19], cascade topologies [20] and boost-flyback converters [21,22].…”

Section: Introductionmentioning

confidence: 99%

Double boost‐flyback converter

Cardoso

Brockveld

Lazzarin

et al. 2020

IET Power Electronics

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A high-gain step-up non-isolated dc-dc converter is proposed in this study, named the double boost-flyback converter. The topology combines two conventional boost-flyback converters with input-parallel and floating-output connections. The new topology increases the static gain and reduces the input current ripple in relation to the conventional boost-flyback topology. The proposed converter has the potential to be used in low input voltage applications that require a high gain, such as systems powered by photovoltaic panels, fuel cells, electric vehicles, and low voltage batteries. This study provides details on the principle of operation, static gain, control strategy, design guide and experimental verification. A 1 kW prototype was designed and built for an input voltage of 48 V and an output voltage of 800 V, reaching a static gain of 16.67. The maximum efficiencies obtained were 94.6% at 70% of load and 93.9% at rated load.

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Design and Implementation of New Topology for Nonisolated DC–DC Microconverter with Effective Clamping Circuit

Cited by 16 publications

References 13 publications

Design and Development of Non-Isolated Modified SEPIC DC-DC Converter Topology for High-Step-Up Applications: Investigation and Hardware Implementation

Design and Development of Non-Isolated Modified SEPIC DC-DC Converter Topology for High-Step-Up Applications: Investigation and Hardware Implementation

A novel salp swarm assisted hybrid maximum power point tracking algorithm for the solar photovoltaic power generation systems

Double boost‐flyback converter

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