Optimal robust control of a Cascaded DC–DC boost converter

Gkizas, George

doi:10.1016/j.conengprac.2020.104700

Cited by 7 publications

(4 citation statements)

References 35 publications

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“…e boost converter is responsible for regulating PV outputs of interest and assuring convergence to the desired equilibrium point [19]. e boost converter in Figure 3 increases the system voltage from the PV natural voltage of 272 Vdc to 500 Vdc.…”

Section: Dc-dc Boost Convertermentioning

confidence: 99%

Feasibility Study of a Hybrid PV/Hydro System for Remote Area Electrification in Rwanda

Niringiyimana

Sun

Dushimimana

2022

Journal of Renewable Energy

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Rwanda is among the least developed countries on the globe with total access to electricity not exceeding 63%, where the rest of the population lives in areas with no access to electricity. One such a place, which is the focus of this research, is Musanze district (1.4919 S, 29.5572 E), where 60% of the population in this area are located in remote areas, which makes the task of their electrification via grid system very difficult. Micro hydropower has been developed so far to reduce the deficit of energy access in this area. However, the power generated is not enough to cover the area, and the major problem is the decrease in river water level in the dry season, which affects the power generation. In this work, the feasibility of a hybrid PV/hydroelectric supply system is studied and optimized to increase the number of homes accessing electricity in this area. A 200 kW Mutobo micro hydro system in Musanze district under operation is considered a case study where a 100 kW PV array tied to the micro hydropower system is designed. The optimized PV-hydro hybrid system was proposed using a modified P and O MPPT algorithm to enhance the PV-generated power. The model was designed and simulated using MATLAB/Simulink, and data recorded from Mutobo micro hydropower station, Rwanda Energy Group, and National Meteorological Agency were used to estimate solar energy potentials. The results showed that the hybrid PV/hydro system is feasible and effectively contributes to the power shortage mitigation in remote areas during the dry season.

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Section: Dc-dc Boost Convertermentioning

confidence: 99%

Feasibility Study of a Hybrid PV/Hydro System for Remote Area Electrification in Rwanda

Niringiyimana

Sun

Dushimimana

2022

Journal of Renewable Energy

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“…where x e (t) is the tracking reference error (more details can be found in [34] (Section 2) and/or [35] (Section 2)). The new state represents the dynamic equation dx e dt = V re f − v out (t) that, combined with the states of the converter, yields an augmented system of n + 1 states given by,…”

Section: Parameter-dependent Dc-dc Converters Control Designmentioning

confidence: 99%

“…Note that [ 0 0 1 ] • V re f is a concept introduced for reference tracking purposes. For control, it is not considered in the design where the reference is constant (see [34,35]). We assume that the parameters C(t), L(t), D on (t), R(t) and V in (t) are time-varying and bounded.…”

Section: Parameter-dependent Dc-dc Converters Control Designmentioning

confidence: 99%

Gain-Scheduled Control Design Applied to Classical dc–dc Converters in Photovoltaic Systems and Constant Power Loads

Fuentes

Palma²,

Guillardi³

et al. 2022

Mathematics

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This paper investigates the problem of control design for dc–dc converters, where the solution is especially suitable to address variations in the input voltage, a frequent situation in photovoltaic systems, and the problem of constant power load, where a nonlinear load is connected to the output of the converter. The proposed approach models the converters in terms of Linear Parameter-Varying (LPV) models, which are used to compute gain-scheduled robust gains. The synthesis conditions provide stabilizing controllers with an attenuation level of disturbances in terms of the H∞ norm. Moreover, the design conditions can also overcome pole locations to comply with physical application restrictions when ensuring transient performance. The validation of the controllers is made via simulation of the classical converters (buck, boost and buck-boost), showing that the proposed method is a viable and generalized control solution that works for all three converters, with guarantees of closed-loop stability and good performance.

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“…Bu durum gerilim dengeleme ve termal yönetim sorunları olmak üzere bazı dezavantajlara sahiptir. Bu nedenle gerekli gerilim kazancını elde etmek için gerilim çoklayıcı hücreler ve basamaklama gibi teknikleri birleştiren dönüştürücüler kullanılmaktadır [36]. Rezvanyvardom vd.…”

Section: Giriş (Introduction)unclassified

Kendinden ayarlı bulanık PI denetleyici tabanlı DA-DA dönüştürücü tasarımı ve deneysel uygulaması

Kaysal

Köroğlu

Oğuz

et al. 2022

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

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Bu çalışmada kendinden ayarlı bulanık PI (SFPI) kontrolör tabanlı DA-DA yükselten dönüştürücü topolojisi sunulmuştur. Dönüştürücünün kapalı çevrim transfer fonksiyonu elde edilmiş ve kararlılık analizi için küçük işaret modeli incelenerek tasarımı gerçekleştirilmiştir. Giriş-çıkış ilişkisi kara kutu modelleme ile doğrulanmıştır. Sistemin farklı anahtarlama frekanslarında 20 kHz ile 100 kHz aralığındaki davranışları incelenmiştir. Sistemin dinamik tepkisini test etmek için geleneksel PI kontrolör uygulanmış ve sistemde giriş gerilimi ve yük değişimleri gibi durumlarda gerilim regülasyonunun yetersiz olduğu gözlenmiştir. Bu nedenle dönüştürücünün çıkış gerilim regülasyonunu iyileştirmek için SFPI kontrolör önerilmiştir. Önerilen SFPI ile PI kontrolörler yükselme zamanı, yerleşme zamanı ve aşma gibi performans kriterleri ile karşılaştırılmıştır. Analiz sonuçlarına göre önerilen kontrolör ve sönümleme devrelerinin tasarlanması ile güç dönüşümündeki kayıpların azaltılarak sistem veriminin iyileştirildiği gözlenmiştir. Prototipi gerçekleştirilen dönüştürücünün nominal gerilimi 48 V, gücü 100 W olup sistemin genel verimi %92,9 olarak bulunmuştur. Sistemin analiz ve benzetim sonuçları deneysel sonuçlarla doğrulanmıştır.

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Optimal robust control of a Cascaded DC–DC boost converter

Cited by 7 publications

References 35 publications

Feasibility Study of a Hybrid PV/Hydro System for Remote Area Electrification in Rwanda

Feasibility Study of a Hybrid PV/Hydro System for Remote Area Electrification in Rwanda

Gain-Scheduled Control Design Applied to Classical dc–dc Converters in Photovoltaic Systems and Constant Power Loads

Kendinden ayarlı bulanık PI denetleyici tabanlı DA-DA dönüştürücü tasarımı ve deneysel uygulaması

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