High Step-Up Voltage Gain Boost Chopper-Fed DC-DC Converter for Medium Voltage Applications

Devarapalli, Durga; Mehbodniya, Abolfazl; Reddy, N Madhusudhan; Gopal, A S N R; Saravanan, S.; Sudha, G.

doi:10.1109/icssit53264.2022.9716385

Cited by 4 publications

(3 citation statements)

References 22 publications

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“…Hence, the peak current through the magnetising inductance of the HV flyback converter is derived from (21) and is given in (22).…”

Section: B Energy Exchanges In Pre-processing Stagementioning

confidence: 99%

An Energy-based Analysis of High Voltage Resonant-based Pulsed Low Power Converter for Water Treatment Application

Kuldip,

Lakshminarasamma

2024

IEEE Access

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Usage of ozone is an effective way of treating wastewater, and the silent discharge technique is one of the most efficient and reliable methods for ozone production. Ozone is generated in a Dielectric Barrier Discharge (DBD) chamber through the silent discharge technique and is powered by a high voltage (in the range of −2.5 kV to −5 kV) pulse generator. The pulse generator has two conversion stages, i.e., a high-frequency pre-processing stage and a pulse-frequency postprocessing stage. In a high voltage pulse generator, a significant amount of energy from the input is utilised by the converter's parasitic capacitance and leakage inductance, which reduces the energy delivered to the load for each pulse cycle. This paper proposes an energy-based analysis exploring the potential usage of the flyback converter-based high voltage pulse generator for an application with power requirements under 150W, and water treatment is such an application. An energy-based approach is appropriate to describe the behaviour of the pulse generator in terms of circulating energy and energy exchanges in each stage and energy exchanges between the two stages (i.e. pre and post-processing stages). The proposed analysis is used to derive the essential parameters of the pulse generator and thereby arrive at an appropriate control scheme for the pre and postprocessing stages. The proposed energy-based analysis and the derived analytical expressions of the high voltage pulse generator are verified experimentally for a pulsed output voltage of −5 kV having a Pulse Repetitive Rate (PRR) of 1000 Hz and pulse width of 15 µs fed from a 12 V battery source.INDEX TERMS energy-based analysis, flyback converter, capacitive load, programmable pulsed high voltage, pulse power, resonant converter NOMENCLATURE

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“…Hence, the peak current through the magnetising inductance of the HV flyback converter is derived from (21) and is given in (22).…”

Section: B Energy Exchanges In Pre-processing Stagementioning

confidence: 99%

An Energy-based Analysis of High Voltage Resonant-based Pulsed Low Power Converter for Water Treatment Application

Kuldip,

Lakshminarasamma

2024

IEEE Access

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“…Applying volt-second balance to L 3 and L 4 from Equations ( 1) and ( 7) yields Equation (20). After solving Equation (20), by applying the fact that the average voltage across C 3 is almost zero during the steady state, Equation ( 23) can be obtained (D1) is the discharging time of L 3 and L 4 , and (β 1 ) represents the discharging time of L 2 , which can be found from Equation (22) and is a function of (D, Vs, Vc 2 ).…”

Section: Voltage Gain Of the Proposed Converter In Dcmc1mentioning

confidence: 99%

“…Additionally, these converters exhibit a high inductor count with low switching frequencies, which results in high parasitic resistance, diminished performance, and efficiency. A modified boost converter with dual power switch was proposed in [18], a modified boost converter with a single switch, multiplier capacitor, and SL in [19,22], and a multi-input converter with multiple capacitors as hybrid energy storage in [21], with the goal of attaining high voltage gain for RESs. A buckboost converter with SC SL was developed in [27], a pair of cascaded conventional boost converters with dual switches in [28] and with a single switch in [30], and a modified buck interleaved with SEPIC based on (SC) (SL) with two input sources in [29].…”

Section: Introductionmentioning

confidence: 99%

A New Single-Cell Hybrid Inductor-Capacitor DC-DC Converter for Ultra-High Voltage Gain in Renewable Energy Applications

Algamluoli

2023

Electronics

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In this paper, a new single-cell hybrid switched inductor DC-DC converter is proposed to demonstrate the verification of ultra-high voltage gain in renewable energy applications (REA). The modification involves adding a single cell of an inductor with a diode and double capacitor to increase voltage transfer gain. Additionally, this modification helps prevent the input current from becoming zero, pulsating at very low duty cycles. The single cell of the hybrid inductor is interleaved with the main switch to reduce current stress when the capacitor of the single-cell inductor charge becomes zero. Moreover, the addition of a modified hybrid switch inductor with a capacitor, operating in dual boosting mode with a single switch, allows the converter to achieve ultra-high voltage gain. The proposed converter offers several advantages, including ultra-high voltage gain, high efficiency, low voltage stress on power MOSFETs, diodes, inductors, and capacitors, as well as low switching and conduction losses. Furthermore, the proposed converter utilizes transformerless and non-coupled inductors. Mathematical equations have been derived for the discontinuous conduction mode (DCM) and continuous conduction mode (CCM) and implemented using Matlab Simulink software to validate the results. In addition, a dual PI controller is designed for the proposed converter to verify the fixed output voltage. Experimental results have also been obtained for a 200 W prototype, with the input voltage varying between 20 V and 40 V, and an output voltage of 200 V at an efficiency of 96.5%.

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Experimental validation of an analytical transient model for saturated boosting gain in DC–DC converters with variable duty cycle

Adly,

Anis,

Ezzat

et al. 2024

Discov Appl Sci

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This paper presents an innovative approach to characterize the boosting gain saturation phenomenon in DC–DC converters with variable duty cycles, a crucial component in energy management applications such as renewable energy systems and IoT devices. While existing literature predominantly relies on steady-state models to explain boosting gain behaviour, this study reveals discrepancies between theoretical predictions and experimental observations, particularly at high duty cycles. The research introduces an analytical model to accurately capture the boosting gain dynamics of a boost chopper converter, addressing the limitations of traditional steady-state analyses. Through experimental validation and numerical simulations using CAD tools, a significant boosting gain saturation of approximately 2.2 is empirically observed, highlighting the necessity for a transient model approach. By providing a comprehensive understanding of the boosting ratio constraints in practical boost converters, this work contributes to advancing the analytical modelling techniques in the field. The mathematical model’s validation through rigorous experimental measurements and simulation analyses underscores its reliability and applicability in real-world scenarios. The structured organization of the paper elucidates the development and verification process, culminating in insightful conclusions that underscore the significance of transient modelling in enhancing the performance and efficiency of DC–DC converters.

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High Step-Up Voltage Gain Boost Chopper-Fed DC-DC Converter for Medium Voltage Applications

Cited by 4 publications

References 22 publications

An Energy-based Analysis of High Voltage Resonant-based Pulsed Low Power Converter for Water Treatment Application

An Energy-based Analysis of High Voltage Resonant-based Pulsed Low Power Converter for Water Treatment Application

A New Single-Cell Hybrid Inductor-Capacitor DC-DC Converter for Ultra-High Voltage Gain in Renewable Energy Applications

Experimental validation of an analytical transient model for saturated boosting gain in DC–DC converters with variable duty cycle

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