Improved Luo converter modifications with increasing voltage ratio

Berkovich, Y.; Axelrod, B.; Madar, Rotem; Twina, Avraham

doi:10.1049/iet-pel.2014.0135

Cited by 40 publications

(19 citation statements)

References 18 publications

(19 reference statements)

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“…5b shows the voltage waveforms obtained at the input port (CH1) and at various output stages which are same as the voltage developed across the output capacitors C 01 to C 03 (CH2-CH4). The voltage waveforms obtained from the oscilloscope match very closely with the design values obtained using the analytical expressions (13) and (14).…”

Section: Hardware Results and Discussionsupporting

confidence: 65%

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Non‐isolated high gain DC–DC converter with low device stress and input current ripple

Revathi

Prabhakar

2018

IET Power Electronics

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In this article, a novel DC-DC converter with high voltage gain capability is presented. The proposed converter is synthesised from (i) a basic two-phase interleaved boost converter (IBC) which uses coupled inductors (CIs) instead of discrete inductors and (ii) diode-capacitor multiplier (DCM) cells to achieve higher voltage conversion ratio. The outputs obtained from the interleaved and the DCM stages are judiciously cascaded with the outputs obtained from the secondary winding of the CIs to enhance the voltage gain. The input current is almost ripple free due to the adopted interleaving mechanism. As voltage gain is extended using CIs and DCMs, the voltage stress on the semiconductor devices is minimal and only a fraction (10.5%) of the output voltage. Experimental results obtained from the 18 V/380 V, 150 W prototype converter, operating at a maximum efficiency of 94% under full-load condition, validate the proposed concept. Further, practical results obtained under closed-loop condition confirm that the converter yields a constant output of 380 V DC which is suitable for microgrid application.

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Section: Hardware Results and Discussionsupporting

confidence: 65%

“…where k is the coupling coefficient of the CIs. Substituting (13) and (14) in (12), the voltage gain (M) of the proposed converter is derived as…”

Section: Voltage Gainmentioning

confidence: 99%

Non‐isolated high gain DC–DC converter with low device stress and input current ripple

Revathi

Prabhakar

2018

IET Power Electronics

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“…Initially, Luo et al [90] introduced this super-lift technique that was incorporated with the series energy storage elements such as a series capacitors and series inductors that are responsible for the greater voltages in the output resembling the higher geometric progression and Yefim Berkovich et al [91] made some modifications in the positive-output super-lift Luo converter that possess higher voltage transfer gain. Furthermore, Kumar et al [92] used the sliding mode controller operated in the parallel positive-output elementary super lift Luo converter in order to balance the proper sharing of the load current and the voltage regulation.…”

Section: Positive-output Super-lift Luo Convertermentioning

confidence: 99%

A Comprehensive Review of DC–DC Converter Topologies and Modulation Strategies with Recent Advances in Solar Photovoltaic Systems

et al. 2019

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Renewable Energy Sources (RES) showed enormous growth in the last few years. In comparison with the other RES, solar power has become the most feasible source because of its unique properties such as clean, noiseless, eco-friendly nature, etc. During the extraction of electric power, the DC–DC converters were given the prominent interest because of their extensive use in various applications. Photovoltaic (PV) systems generally suffer from less energy conversion efficiency along with improper stability and intermittent properties. Hence, there is a necessity of the Maximum power point tracking (MPPT) algorithm to ensure the maximum power available that can be harnessed from the solar PV. In this paper, the most important features of the DC/DC converters along with the MPPT techniques are reviewed and analyzed. A detailed comprehensive analysis is made on different converter topologies of both non-isolated and isolated DC/DC converters. Then, the modulation strategies, comparative performance evaluation are addressed systematically. At the end, recent advances and future trends are described briefly and considered for the next-generation converter’s design and applications. This review work will provide a useful structure and reference point on the DC/DC converters for researchers and designers working in the field of solar PV applications.

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“…The enhanced output from MNLC transmits the required data effectively. Figure 2 shows the elementary circuit of MNLC [4]. It consists of DC supply voltage V in , capacitors C 1 and C 2 , inductor L 1 and L 2 switch S, diodes D 1 , D 2 and D 3 and the load resistance R. The working principle is explained with the switch "S" on and off as two modes of operation as shown in Figure 3, Figure 4.…”

Section: Proposed Systemmentioning

confidence: 99%

An Approach towards Pulse Data Transmission Using Modified Negative Luo Converter (MNLC) for Telecoms

Chamundeeswari¹,

Seyezhai²

2016

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Telecom sectors generally operate at negative voltages to reduce the effect of corrosion caused in the metallic wire due to electrochemical reaction while communicating signals. To feed those lines and to have an effective digital data transmission, a power electronic converter referred as Modified Negative Luo Converter (MNLC) is proposed in this paper. MNLC is a high gain converter in which the output voltage increases in geometric progression. This paper portrays a novel concept of a 50 Hz pulse data transmission through RLCG (Resistance-inductance-capacitance with a shunt conductance) transmission line using MNLC. Signal frequency of 50 Hz to be transmitted is anded with a high frequency pulse that charges and discharges MNLC and produces the boosted negative output voltage. The boosted output is again transmitted through the RLCG transmission line from which 50 Hz data pulse is retrieved at the output of the transmission line by comparing with a comparator signal. This sort of MNLC aided data transmission not only introduces less loss in its transmitted data but also overcomes various health hazards of conventional radio frequency (RF) communication. This technique also proves that any data bit stream can be transmitted and retrieved using the proposed high gain DC-DC converter. The simulation model of the proposed system is implemented in MATLAB for various switching frequencies with its prototype of the converter developed and the results are verified.

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Improved Luo converter modifications with increasing voltage ratio

Cited by 40 publications

References 18 publications

Non‐isolated high gain DC–DC converter with low device stress and input current ripple

Non‐isolated high gain DC–DC converter with low device stress and input current ripple

A Comprehensive Review of DC–DC Converter Topologies and Modulation Strategies with Recent Advances in Solar Photovoltaic Systems

An Approach towards Pulse Data Transmission Using Modified Negative Luo Converter (MNLC) for Telecoms

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