Efficiency Enhancement of Non-Isolated DC-DC Interleaved Buck Converter for Renewable Energy Sources

Beres, Matej; Kovac, Dobroslav; Vince, Tibor; Kovacova, Irena; Molnar, Jan; Tomcikova, Iveta; Dziak, Jozef; Jacko, Patrik; Fecko, Branislav; Gans, Simon

doi:10.3390/en14144127

Cited by 17 publications

(3 citation statements)

References 21 publications

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“…Once the shaft speeds were found for the wind turbine, the next step is to implement speed control into the three-phase Buck-Boost converter as described above. The schematic in Figure 14 is developed and used for the simulations for speed control implementation, with only the gain on the speed control PI being adjusted [44].…”

Section: Methodology 71 Speed Control Implementationmentioning

confidence: 99%

Enhancing Wind Turbine Stability and Performance: A Case Study on Speed Control and Maximum Power Point Tracking

Nawaz,

Wei Jiang,

Aimal Khan

2024

DJES

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Wind turbine performance is a critical aspect of renewable energy systems, and this study focuses on optimizing it through innovative strategies. It also discussed the different parts of WECS, such as wind turbines, generators, and control systems, to enhance their performance and efficiency. The research delves into the integration of speed control and Maximum Power Point Tracking (MPPT) mechanisms using a sophisticated Three-Phase Interleaved Buck-Boost Converter. The converter's unique topology, involving a back-to-back connection, shows a pivotal part in shaping the performance of the wind turbine. Furthermore, the near-zero implementation in MPPT strives to minimize oscillations and enhance photovoltaic panel and wind turbine efficiency. This technique, as explored in various studies, aims to achieve stable, efficient power output by reducing perturbations, ensuring optimal energy capture, and improving overall system reliability. This study investigates the transformation before and after near-zero implementation in various contexts. It explores the impact on energy efficiency with near-zero properties, and the performance of buildings, providing insights into the substantial changes brought about by near-zero initiatives. Additionally, the implementation of MPPT is explored, demonstrating that adjusting delta values can lead to faster stabilization times. By changing the negative delta value to -0.0005, the system achieves stabilization at the target power of 19 kW within 0.2 seconds. These findings emphasize the versatility of the Three-Phase Interleaved Buck-Boost Converter in enhancing both speed control and MPPT for wind turbines

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Section: Methodology 71 Speed Control Implementationmentioning

confidence: 99%

Enhancing Wind Turbine Stability and Performance: A Case Study on Speed Control and Maximum Power Point Tracking

Nawaz,

Wei Jiang,

Aimal Khan

2024

DJES

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“…It is widely used for efficient power conversion and voltage regulation in electronic systems owing to their compact size, improved conversion efficiency, minimal drop-out voltage, affordable manufacturing expenses, and substantial output power supply [2]. Some of the key applications of the buck converter include power supplies [3], LED lighting systems [4], electronic subsystems in electric vehicles [5], renewable energy conversion systems [6], etc. To eliminate the error between the reference voltage (v re f ) and actual output voltage (v o ) of the buck converter, negative feedback control schemes are typically used to continuously change the duty cycle (d) of the circuit's primary switch [7].…”

Section: Introductionmentioning

confidence: 99%

Fuzzy-Augmented Model Reference Adaptive PID Control Law Design for Robust Voltage Regulation in DC–DC Buck Converters

Saleem,

Ahmad,

Iqbal

2024

Mathematics

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This paper presents a novel fuzzy-augmented model reference adaptive voltage regulation strategy for the DC–DC buck converters to enhance their resilience against random input variations and load-step transients. The ubiquitous proportional-integral-derivative (PID) controller is employed as the baseline scheme, whose gains are tuned offline via a pre-calibrated linear-quadratic optimization scheme. However, owing to the inefficacy of the fixed-gain PID controller against parametric disturbances, it is retrofitted with a model reference adaptive controller that uses Lyapunov gain adaptation law for the online modification of PID gains. The adaptive controller is also augmented with an auxiliary fuzzy self-regulation system that acts as a superior regulator to dynamically update the adaptation rates of the Lyapunov gain adaptation law as a nonlinear function of the system’s classical error and its normalized acceleration. The proposed fuzzy system utilizes the knowledge of the system’s relative rate to execute better self-regulation of the adaptation rates, which in turn, flexibly steers the adaptability and response speed of the controller as the error conditions change. The propositions above are validated by performing tailored hardware experiments on a low-power DC–DC buck converter prototype. The experimental results validate the improved reference tracking and disturbance rejection ability of the proposed control law compared to the fixed PID controller.

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“…There is a basic family of non-isolated converters, usually called the second-order converters. The family is comprised of the buck, boost, and buck-boost converters [1][2][3][4][5][6][7][8][9][10][11][12]. Figure 1 shows the basic family of second-order converters.…”

Section: Introductionmentioning

confidence: 99%

The Fourth-Order Single-Switch Improved Super-Boost Converter with Reduced Input Current Ripple

et al. 2021

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This paper introduces a new single switch DC-DC fourth-order boost converter. The proposed converter is the improved version of an existing converter known as the super-boost converter. The improved super-boost ISP converter achieves a smaller input current ripple than the super-boost converter when the same parameters in passive components are used. Conversely, smaller components can be used to achieve the same input current ripple, which leads to a compact and cheaper design. A comparative evaluation showed a reduction of 37.3% of stored energy in inductors to comply with a required input current ripple in comparison with the super-boost converter for a particular design. Experimental results are provided to corroborate this benefit of the ISB proposed topology.

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Efficiency Enhancement of Non-Isolated DC-DC Interleaved Buck Converter for Renewable Energy Sources

Cited by 17 publications

References 21 publications

Enhancing Wind Turbine Stability and Performance: A Case Study on Speed Control and Maximum Power Point Tracking

Enhancing Wind Turbine Stability and Performance: A Case Study on Speed Control and Maximum Power Point Tracking

Fuzzy-Augmented Model Reference Adaptive PID Control Law Design for Robust Voltage Regulation in DC–DC Buck Converters

The Fourth-Order Single-Switch Improved Super-Boost Converter with Reduced Input Current Ripple

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