Sliding-Mode Approaches to Control a Microinverter Based on a Quadratic Boost Converter

Valderrama-Blavi, Hugo; Rodríguez-Ramos, Ezequiel; Olalla, Carlos; Genaro-Muñoz, Xavier

doi:10.3390/en12193697

Cited by 5 publications

(5 citation statements)

References 13 publications

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“…Therefore, the state-space model of the quadratic buck converter is rewritten as (12). Then, considering the invariance and transversality conditions, defined in ( 9) and (11), respectively, and the state-space model (12) it is possible to obtain the existence of sliding mode, the equivalent control, the ideal sliding dynamics and, the corresponding equilibrium points for the different proposed surfaces S 0 (x), S 1 (x) and S 2 (x). The corresponding results are detailed in Table 1.…”

Section: A Selecting the Sliding Surface For The Qbcmentioning

confidence: 99%

“…The latter usually involves specifications regarding high-quality power performance, high conversion range, fast dynamic response and robustness [9]. In this context, DC-DC switching converters with high conversion ratio have been recently used in efficient lighting and micro-inverter design [10]- [12]. In some cases, they are implemented with two energy conversion stages or with a high-frequency (HF) transformer with a high turns ratio.…”

Section: Introductionmentioning

confidence: 99%

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Sliding-Mode Control of a Quadratic Buck Converter With Constant Power Load

et al. 2022

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This paper analyzes for the first time a two-loop sliding-mode control (SMC) of a high-order converter supplying a constant power load (CPL). The converter is a single-switch quadratic buck structure (QBC) interfacing a domestic 380 V DC bus to a CPL requiring a regulated voltage of 48 V DC. The converter is unstable in the absence of control and even after the insertion of an inner loop based on SMC of the input inductor current. The addition of an appropriate linear outer loop establishing the reference to the inner loop stabilizes the system and provides output voltage regulation. The regulated QBC shows a fast recovery of the output voltage with negligible overshoot in response to step-type changes of the output power or the input voltage. It is also shown that the implemented regulator for CPL supply can be used directly in the case of a constant current load (CCL) or a constant resistance load (CRL) resulting in similar performance to the CPL case. PSIM simulations and experimental results in a 400 W prototype are in good agreement with theoretical predictions.INDEX TERMS High-order converters with constant power load, buck quadratic converter, sliding-mode control.

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Section: A Selecting the Sliding Surface For The Qbcmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sliding-Mode Control of a Quadratic Buck Converter With Constant Power Load

et al. 2022

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“…The control technique consists of a MPPT based a fixed-frequency model predictive control and a PI control. The paper [ 33 ] presents a microinverter based a cascaded boost converter with a full bridge. The control technique consists in two sliding control alternatives (input current mode and pseudo-oscillating mode).…”

Section: Control Strategiesmentioning

confidence: 99%

“…The paper [ 33 ] presents a microinverter based a cascaded boost converter with a full bridge. The control technique consists in two sliding control alternatives (input current mode and pseudo-oscillating mode).…”

Section: Control Strategiesmentioning

confidence: 99%

Review of Control Techniques in Microinverters

Rojas

Muñoz

Rivera

et al. 2021

Sensors

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The use of renewable energies sources is taking great importance due to the high demand for electricity and the decrease in the use of fossil fuels worldwide. In this context, electricity generation through photovoltaic panels is gaining a lot of interest due to the reduction in installation costs and the rapid advance of the development of new technologies. To minimize or reduce the negative impact of partial shading or mismatches of photovoltaic panels, many researchers have proposed four configurations that depend on the power ranges and the application. The microinverter is a promising solution in photovoltaic systems, due to its high efficiency of Maximum Power Point Tracking and high flexibility. However, there are several challenges to improve microinverter’s reliability and conversion efficiency that depend on the proper control design and the power converter design. This paper presents a review of different control strategies in microinverters for different applications. The control strategies are described and compared based on stability, dynamic response, topologies, and control objectives. One of the most important results showed that there is little research regarding the stability and robustness analysis of the reviewed control strategies.

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“…Bjaoui et al [19] analysed an SMC for maximum power point tracking (MPPT) of a fuel cell with a boost converter; in this case, they obtained the results through experiments where proper outcomes were reached in terms of performance and robustness. Another example has been developed by Valderrama-Blavi et al [20]; in this case, a boost converter arrangement for a step-up DC-AC output was designed and a SMC controller was embedded for plant order reduction. Experiments showed an increment of efficiency of around 90%.…”

Section: Introductionmentioning

confidence: 99%

Experimental Analysis of a Fuzzy Scheme against a Robust Controller for a Proton Exchange Membrane Fuel Cell System

2022

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Proton exchange membrane fuel cells (PEMFC) are capable of transforming chemical energy into electrical energy with zero emissions. Therefore, these devices had been a point of attention for the scientific community as to provide another solution to renewable sources of energy. Since the PEMFC is commonly driven with a power converter, a controller has to be implemented to supply a convenient voltage. This is an important task as it allows the system to be driven at an operative point, which can be related to the maximum power or an user desired spot. Along this research article, a robust controller was compared against a fuzzy logic strategy (with symmetric membership functions) where both were implemented to a commercial PEMFC through a dSPACE 1102 control board. Both proposals were analysed in an experimental test bench. Outcomes showed the advantages and disadvantages of each scheme in chattering reduction, accuracy, and convergence speed.

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Sliding-Mode Approaches to Control a Microinverter Based on a Quadratic Boost Converter

Cited by 5 publications

References 13 publications

Sliding-Mode Control of a Quadratic Buck Converter With Constant Power Load

Sliding-Mode Control of a Quadratic Buck Converter With Constant Power Load

Review of Control Techniques in Microinverters

Experimental Analysis of a Fuzzy Scheme against a Robust Controller for a Proton Exchange Membrane Fuel Cell System

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