Cascade Control With Adaptive Voltage Controller Applied to Photovoltaic Boost Converters

Bellinaso, Lucas Vizzotto; Figueira, Henrique Horst; Basquera, Mauro Fernando; Vieira, Rodrigo Padilha; Gründling, Hilton Abílio; Michels, Leandro

doi:10.1109/tia.2018.2884904

Cited by 67 publications

(35 citation statements)

References 17 publications

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“…Dessa forma, todos os MICs podem operar de forma independente entre si, dispensando um sistema de comunicação entre eles. A estrutura de controle em modo MPPT é composta por duas malhas de controle em cascata [18], onde a malha externa de tensão gera a referência para a malha interna que controla a corrente de entrada. A malha de corrente interna possui uma dinâmica muito mais rápida do que a malha externa de tensão, garantindo o desacoplamento e permitindo que os seus dimensionamentos sejam independentes.…”

Section: Projeto Do Transformadorunclassified

Conversor CC-CC Isolado de Alto Ganho para Integração em Módulos Fotovoltaicos

Knaesel¹,

Michels²,

Batschauer³

et al. 2019

Revista Eletrônica de Potência

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Significant cost reduction of photovoltaic system components has changed the perspective of future application of these systems. Many installation sites currently discarded due to non-optimal orientations and partial shading conditions may become economically viable. Moreover, there is a tendency for the dissemination of building integrated photovoltaic systems (BIPV). An interesting approach to maximizing the power conversion Artigo submetido em 30/05/2019. Primeira revisão em 12/08/2019. Aceito para publicação em 09/12/2019 por recomendação do Editor Marcelo Cabral Cavalcanti.

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Section: Projeto Do Transformadorunclassified

Conversor CC-CC Isolado de Alto Ganho para Integração em Módulos Fotovoltaicos

Knaesel¹,

Michels²,

Batschauer³

et al. 2019

Revista Eletrônica de Potência

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“…[1][2][3] Since the generated DC voltage of the PV arrays is at a very low level, these converters are applied to increase the voltage before converting to the AC voltage at the grid side. 4,5 For this reason, various structures have been proposed to increase the voltage. Converters such as conventional boost, [6][7][8][9] buck-boost, [10][11][12] fly-back, 13,14 and Cuk 15,16 have not high-voltage gain, and electromagnetic interference (EMI) and diode back-flow problems can be seen in these converters because the high-voltage gain can be obtained in higher duty cycles for the power switches.…”

Section: Introductionmentioning

confidence: 99%

A transformer‐less single‐switch boost converter with high‐voltage gain and mitigated‐voltage stress applicable for photovoltaic utilizations

Yin

Ghaderi

2020

Int Trans Electr Energ Syst

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Many of the photovoltaic (PV) panels generate the low amounts of the voltages under the limited values of the powers. In order to increase these voltages to be applicable for grid utilization, DC-DC boost converters are used. A novel nonisolated transformer-less switched-capacitor-based DC-DC power boost structure is combined with the quadratic converter in this study. The proposed converter has many advantages such the low-voltage stresses on the power components, higher voltage-gain, and ability to supplying the load under the low amounts of the switching time intervals. These features lead to fewer amounts of the currents for the power components in the topology for the continuous conduction mode which means less dynamic losses and higher efficiency. Another advantage of the proposed converter is including only one power switch that simplifies the controller design for implementation purposes. A comprehensive mathematical analysis is presented and simulation with MATLAB/SIMULINK and implemented hardware test results confirm the theoretical investigations. K E Y W O R D S boost converter, continuous current mode, photovoltaic utilizations, switched-capacitor LIST OF SYMBOLS AND ABBREVIATIONS: CCM, continuous current mode; DT, duty cycle; T, time period; I C2,on , currents of capacitors C 2 for the first operation mode; I C3,on , currents of capacitor C 3 for the first operation mode; I C4,on , currents of capacitor C 4 for the first operation mode; I C5, on , currents of capacitor C 5 for the first operation mode; I C2,off , currents of capacitor C 2 for the second operation mode; I C3,off , currents of capacitor C 3 for the second operation mode; I C4,off , currents of capacitor C 4 for the second operation mode; I C5,off , currents of capacitor C 5 for the second operation mode; ID1,on, currents of diode D 1 for the first operation mode; ID 2 ,on, currents of diode D 2 for the first operation mode; ID 3 ,on, currents of diode D 3 for the first operation mode; ID 4 ,on, currents of diode D 4 for the first operation mode; ID 5 ,on, currents of diode D 5 for the first operation mode; ID 6 , on, currents of diode D 6 for the first operation mode; ID 1 ,off, currents of diode D 1 for the second operation mode; ID 2 ,off, currents of diode D 2 for the second operation mode; ID 3 ,off, currents of diode D 3 for the second operation mode; ID 4 ,off, currents of diode D 4 for the second operation mode; ID 5 , off, currents of diode D 5 for the second operation mode; ID 6 ,off, currents of diode D 6 for the second operation mode; ΔiL1, current ripples of the inductor L 1 ; ΔiL2, current ripples of the inductor L 2 ; ΔiL3, current ripples of the inductor L 3 ; ΔVo, voltage ripples of the capacitor C O ; Fs, switching frequency; ΔVc,cap, the ripple value caused by capacitor charging and discharging; P VFD , power losses by diodes.

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“…Essa estrutura de controle, se comparada com o controle de malha única, tem como vantagens: maior robustez a distúrbios, redução do atraso de fase do controlador primário, capacidade de limitar o ponto de ajuste do controlador secundário e redução da sensibilidade da variável primária [5]. Várias soluções de eletrônica de potência utilizam essa estratégia de controle para os mais diversos fins [6]- [8]. A sintonia de controladores em cascata frequentemente é baseada em controle clássico, iniciando pelo projeto do laço interno, de forma que o controlador secundário (i.e., malha interna) responda mais rapidamente a perturbações do que o primário (i.e., malha externa) [1].…”

Section: Introductionunclassified

Projeto Automático de Controladores com Duas Malhas no Espaço de Estados Aplicado a Conversores de Potência

Mattos¹,

Borin²,

Osório³

et al. 2020

Revista Eletrônica de Potência

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This work proposes a systematic procedure for designing the gains of an internal and external control loops in the state space applicable to power converters. One advantage of the approach is the automatic tuning of the controllers, being able to reduce the dependence on the designer expertise and also reducing the time demanded in trial and error stages, especially for systems with a large number of state variables. Another favorable feature is that the control gains of the two loops are obtained simultaneously, in an offline way, by means of an optimization algorithm that minimizes a squared criterium based on the error and the control signal. The

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Cascade Control With Adaptive Voltage Controller Applied to Photovoltaic Boost Converters

Cited by 67 publications

References 17 publications

Conversor CC-CC Isolado de Alto Ganho para Integração em Módulos Fotovoltaicos

Conversor CC-CC Isolado de Alto Ganho para Integração em Módulos Fotovoltaicos

A transformer‐less single‐switch boost converter with high‐voltage gain and mitigated‐voltage stress applicable for photovoltaic utilizations

Projeto Automático de Controladores com Duas Malhas no Espaço de Estados Aplicado a Conversores de Potência

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