Non-isolated high gain DC-DC converter by quadratic boost converter and voltage multiplier cell

Navamani, J. Divya; Vijayakumar, K.; Jegatheesan, R.

doi:10.1016/j.asej.2016.09.007

Cited by 32 publications

(16 citation statements)

References 26 publications

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“…This voltage multiplier based boost converters can be realized without any additional active switch. Moreover, the original configuration of the converter need not be modified because of the addition of Diode-Capacitor cell in the circuit [36]. Many Diode-Capacitor cells can be added to extend the static gain of the converter.…”

Section: Introductionmentioning

confidence: 99%

Steady State Behavior of a Single-Switch Non-isolated DC-DC SEPIC Converter Topology with Improved Static Voltage Gain

Murali¹

2021

JESA

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This paper presents the analysis of steady state behavior of a single switch non-isolated Single Ended Primary Inductance Converter (SEPIC) topology for achieving high DC voltage gain using diode-capacitor voltage multiplier. A voltage boosting module consisting of inductor and capacitor in addition with two diodes is introduced in the conventional SEPIC configuration in order to derive the DC-DC conversion technology proposed in this work. The voltage gain of the converter is extended using a diode-capacitor voltage multiplier cell. The converter suggested in this work has a single controlled switch. Hence, the conduction losses and the control complexity of the switch are very much reduced. The open loop configuration of the proposed non-isolated converter is described under continuous inductor current mode. The voltage boosting capability of the presented converter is compared with that of the existing modified SEPIC structure. The presented positive output converter topology has low switch voltage-current stress compared to the existing modified SEPIC topology given in the literature. The inductor and capacitor components of the suggested converter are so chosen that the DC output voltage and current waveforms show very low percentage of ripples. A DC voltage level of 24 V is given as input to the proposed converter. The DC voltage obtained across the load terminals is around 370 V which is achievable with low duty ratio (= 0.7) of the active switch. The voltage conversion ratio is very much influenced by the variation of the duty cycle of the power switch. In this work, the converter topology is presented and its various modes of operation are explained with equivalent circuits. The PSIM software platform is effectively and efficiently utilized to validate the performance of the converter. The obtained results convey that the proposed DC-DC conversion technology with extended voltage gain has the capability to maintain the steady-state output voltage and current profiles with almost negligible amount of ripples owing to the use of suitably designed non-dissipative elements in LC filter.

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Section: Introductionmentioning

confidence: 99%

Steady State Behavior of a Single-Switch Non-isolated DC-DC SEPIC Converter Topology with Improved Static Voltage Gain

Murali¹

2021

JESA

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“…Although a high ratio transformer is used in the conventional isolated converters such as full‐bridge or fly‐back converters, the non‐isolated type of the converters is preferred based on their lower costs because they do not use the transformer and higher efficiency …”

Section: Introductionmentioning

confidence: 99%

“…[18][19][20][21] Although a high ratio transformer is used in the conventional isolated converters such as full-bridge or fly-back converters, the non-isolated type of the converters is preferred based on their lower costs because they do not use the transformer and higher efficiency. [22][23][24] The current type isolated converters such as active clamp and full-bridge active clamp step-up converters can receive to higher efficiency and DC voltage gains. 25,26 The initial and primary startup of these converters should be done by more attention and furthermore the total cost of these converters is high because of the number of the power elements, current sensors, and feedback controllers.…”

Section: Introductionmentioning

confidence: 99%

Sliding mode controller‐based e‐bike charging station for photovoltaic applications

Huang

Feng

Ghaderi

2020

Int Trans Electr Energ Syst

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Summary PV‐based and wired type of the electrical bicycles (e‐bike) battery charging stations widely is spreading because of the resonant network limitations and low efficiency of the wireless mode for these stations. The generated voltage of many of the PV panels such as JIYANGYIN HR‐200 W‐24 V at the maximum power point is around 36VDC. So, a step‐down converter with a PID controller for Maximum Power Point Tracking (MPPT) of the PV panels is considered between PV panels and boost converter in order to decrease this voltage and enhance the current values for the load side. A sliding mode controller (SMC) equipped with a non‐isolated DC‐DC boost converter with reduced voltage stresses on the power switch is presented. The step‐up converter increases the voltage to the utility level of the e‐bike with around 360 Wh amount of energy. The main concerns about the converters are the efficiency, voltage, and current stresses, number of active or passive components in the converter topology and simplicity. In comparison with a conventional step‐up converter, the selected converter has a lower dynamic loss in the input inductor that can give a proper efficiency by considering its higher voltage gain. The average state‐space model for the SMC is used and the main advantage of the controller is its independency to the inductor current or the amount of the load. The proposed SMC is compared with PID and Fuzzy Logic Controller (FLC) methods and based on the results, the robustness, overshoot, and damping factor of the controller are at an acceptable and better level. All mathematical, simulation and comparison results are presented. A 720 Wh circuit has been implemented for charging all types of the Li‐Ion or Li‐Polymer batteries with 36VDC and 10 Ah specifications.

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“…However, the losses of converters would add up, resulting in reduced efficiency of the system. So-called quadratic converters [17][18][19][20] can achieve the voltage gain of the cascaded converters with fewer switches, but voltage or current overstresses could be present. Finally, hybrid converters are becoming an interesting solution [21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Switched-Capacitor Boost Converter for Low Power Energy Harvesting Applications

et al. 2018

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The paper presents a Switched-Capacitor Boost DC-DC Converter (SC-BC) which can be used in energy harvesting applications using thermoelectric generators (TEGs) with low output voltage, low power and a significant internal resistance. It consists of a switching capacitor circuit, where MOSFETs are used as switches, and a boost stage. The converter is a modification of a previously presented scheme in which diodes are used in the switched capacitor stage. A higher voltage gain and an increased efficiency can thus be achieved. The model of the converter was developed considering the internal resistance of the TEG and boost stage inductor. A comparison with the diode based converter is shown, with consideration of the TEG internal resistance. Calculation is presented of the main passive components. A control algorithm is also proposed and evaluated. It is based on a linearization approach, and designed for output voltage and inductor current control. The operation of both converter and control are verified with the simulation and experimental results.

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Non-isolated high gain DC-DC converter by quadratic boost converter and voltage multiplier cell

Cited by 32 publications

References 26 publications

Steady State Behavior of a Single-Switch Non-isolated DC-DC SEPIC Converter Topology with Improved Static Voltage Gain

Steady State Behavior of a Single-Switch Non-isolated DC-DC SEPIC Converter Topology with Improved Static Voltage Gain

Sliding mode controller‐based e‐bike charging station for photovoltaic applications

Switched-Capacitor Boost Converter for Low Power Energy Harvesting Applications

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