Performance comparison of different control strategies for the regulation of DC-DC negative output super-lift luo-converter

Motlak, Hassan Jassim; Rahi, Ahmed S.

doi:10.11591/ijece.v10i6.pp5785-5792

Cited by 3 publications

(4 citation statements)

References 24 publications

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“…Numerous control circuits are present. Everyone has benefits, drawbacks, and unique applications [17]. PV systems use DC-DC step-up converters to boost and regulate the voltage produced by the PV modules.…”

Section: Figure 2 Pv Model Circuit [12]mentioning

confidence: 99%

Design and Implementation DC/DC Luo Converter Controlled by Adaptive Fractional PI and P&O MPPT

Tajaldin,

Motlak

2024

JESA

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This research aims to enhance the efficiency of photovoltaic systems by proposing two innovative methods for maximum power point tracking (MPPT). We used the beluga whale optimization (BWO) algorithm, so we can adjust the gain of the PI controller. Volatility around MPP and failure accuracy under rapidly changing isolation are among the known drawbacks of traditional MPPT algorithms. To overcome these drawbacks, we proposed a theory that combines Perturb and Observe (P&O) with BWO, based on the controller of proportional integration (PI) and fractional order proportional integration (FOPI). The study compares the new techniques with existing traditional algorithms such as P&O and IC in terms of their efficiency, complexity and ease of implementation. Simulation tests conducted using Matlab indicate that the proposed hybrid FOPI-BWO method achieves an average tracking efficiency of about 97.05% and a voltage gain of 2.348, in the PI-BWO method it achieves an efficiency of 96.12% and a voltage gain of 2.322, and the IC-MPPT theory achieves an efficiency of 95.5% and a voltage gain of 2.261. , while the P&O-MPPT theory achieved an efficiency of 94.02% and a voltage gain of 2.241.It is clear that the two proposed algorithms perform better than traditional algorithms in terms of energy overshoot, ripple, and response time.

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Section: Figure 2 Pv Model Circuit [12]mentioning

confidence: 99%

Design and Implementation DC/DC Luo Converter Controlled by Adaptive Fractional PI and P&O MPPT

Tajaldin,

Motlak

2024

JESA

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“…𝛥𝑉𝐶 𝑜 Recommended to set less than 5% [31]. 𝐶 𝑚𝑖𝑛 = 1.5 μf It's the minimum value of the output capacitor for working in CCM.…”

Section: Modify (Poslc)mentioning

confidence: 99%

“…The (31) draws the boundary condition between CCM and discontinuous conduction mode (DCM) we can draw the curve between duty cycle and τ= (f L)/R as shown in Figure 7. Notice if we increase the load resistance over its limits the circuits work at DCM that mean the inductor current during the off-state will be zero for a while.…”

Section: Modify (Poslc)mentioning

confidence: 99%

Improving the design of super-lift Luo converter using hybrid switching capacitor-inductor cell for PV system

Hussein

Motlak

2022

IJEECS

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<p>In this article, an improvement to the positive output super-lift Luo converter (POSLC) has been proposed to get high gain at a low duty cycle. Also, reduce the stress on the switch and diodes, reduce the current through the inductors to reduce loss, and increase efficiency. Using a hybrid switch unit composed of four inductors and two capacitors it is replaced by the main inductor in the elementary circuit. It’s charged in parallel with the same input voltage and discharged in series. The output voltage is increased according to the number of components. The gain equation is modeled. The boundary condition between Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM) has been derived. Passive components are designed to get high output voltage (8 times at D=0.5) and low ripple about (0.004). The circuit is simulated and analyzed using MATLAB/Simulink. Maximum power point tracker (MPPT) controls the converter to provide the most interest from solar energy.</p>

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“…Many researchers have addressed the increase in low voltage in DC-DC converters and obtaining the highest efficiency from solar cells to increase profit while reducing costs and increasing efficiency [13][14][15]. The Luo converter types have been discussed in [16,17]. Luo converter is used in renewable energy applications in [18,19].…”

Section: Introductionmentioning

confidence: 99%

Efficient Design, Analysis and Implementation of Super-Lift LUO Converter for Standalone PV Applications

Ghafour

Ajel

Yasin

et al. 2023

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Positive-output super-lift Luo converters (POSLCs) with low switching losses are the subject of this paper's analysis, design, and regulation. Due to their ability to boost voltage at higher levels, converter switching devices are rarely put under extreme voltage conditions. The input voltage to an active switching device is typically lower than the output voltage. This means that low-quality components are used to build the converter. The proposed conversion can be a good choice in PV micro converter applications requiring high voltage gain. The continuous conduction mode of the converter and its underlying operating principle and steady-state analysis are described. The converter's basic principle is demonstrated by constructing a working hardware prototype, which is tested in the lab. The outcomes demonstrate the benefits of employing an Arduino for voltage control. It has also been found that the converter achieves maximum efficiency of 95.3% at full load. The results were confirmed using MATLAB / Simulink in POSLC design with MPPT which is in agreement with the experimental results.

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Performance comparison of different control strategies for the regulation of DC-DC negative output super-lift luo-converter

Cited by 3 publications

References 24 publications

Design and Implementation DC/DC Luo Converter Controlled by Adaptive Fractional PI and P&O MPPT

Design and Implementation DC/DC Luo Converter Controlled by Adaptive Fractional PI and P&O MPPT

Improving the design of super-lift Luo converter using hybrid switching capacitor-inductor cell for PV system

Efficient Design, Analysis and Implementation of Super-Lift LUO Converter for Standalone PV Applications

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