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A controller based on Fuzzy logic is implemented and its application to the regulation of power converter is investigated. Being free of complex equations and heavy computation, it achieves fast dynamic response and adapts to varying conditions of operation. The topology is modeled using MATLAB software and operated at finite higher switching frequ...
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In the field of renewable energy, power converters serve an important role in power generation systems. However, they are vulnerable to faults of several types, among which open-circuit faults are the most common. In this context, this paper proposes an efficient method to detect and identify faults in various components of power converters accurat...
The design of robust and reliable power converters is fundamental in the incorporation of novel power systems. In this paper, we perform a detailed theoretical analysis of a synchronous ZETA converter controlled via peak-current with ramp compensation. The controller is designed to guarantee a stable Period 1 orbit with low steady state error at di...
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Citations
... DC-DC converter allows to extract the maximum power from PV panel (Esram and Chapman, 2007). Approaches such as Perturb and Observe method, Incremental Conductance algorithm, Fuzzy Logic methods are proposed to track the optimal point (Chiu, 2009;Rameshkumar and Arumugam, 2009;Lalouni and Rekiou, 2009). Approach based on voltage corresponding to maximum power has also been developed. ...
... Provided, it is more suitable for non linear systems. Because of these reasons, FLC based Maximum Power Point Tracking (MPPT) algorithm attracts research interests and various FLC based MPPT techniques are proposed in the literatures (Chiu, 2009;Rameshkumar and Arumugam, 2009;Lalouni and Rekiou, 2009;Xu, 2009;Lian et al., 2001;Chuang et al., 2011;Lin et al., 2013;Narimani and Lam, 2009;Lee et al., 2011). T-S Fuzzy algorithm applied to standalone PV system that utilizes buck converter is reported in Chiu (2009). ...
This paper presents Takagi-Sugeno (T-S) Fuzzy based approach for operating the solar panel in Standalone Photovoltaic (SPV) system at Maximum Power Point (MPP). The SPV system incorporated with T-S Fuzzy algorithm can be represented by four local models and each model in turn is characterized by an optimal operating point. This optimal operating point of local models pave a way to compute the optimal operating point of PV panel. The duty cycle of the boost converter placed between the panel and load has to be appropriately varied based on the computed value, allowing the panel to provide optimal power. The performance of T-S Fuzzy algorithm applied to the boost converter present in SPV system is tested in simulation for various operating conditions and compared with the performance obtained using Incremental Conductance Algorithm. The results indicate the effectiveness of the proposed T-S Fuzzy algorithm in tracking maximum power than the Incremental Conductance Algorithm.
... Para realizar el diseño del controlador, se deben realizar los pasos siguientes (Rameshkumar y Arumugam, 2009): a) Seleccionar parámetros y elementos de control como factores de escala para las señales de entrada y salida. b) Particionar el universo de discurso del intervalo abarcado por cada variable en un número de subconjuntos difusos, y asignar una etiqueta lingüística a cada una. ...
... Para realizar el diseño del controlador, se deben realizar los pasos siguientes (Rameshkumar y Arumugam, 2009): a) Seleccionar parámetros y elementos de control como factores de escala para las señales de entrada y salida. b) Particionar el universo de discurso del intervalo abarcado por cada variable en un número de subconjuntos difusos, y asignar una etiqueta lingüística a cada una. ...
En este artículo se presenta el diseño, la simulación y la implementación de un control aplicado a un convertidor de corriente directa a corriente directa (CD-CD), bidireccional, de medio puente. La estrategia de control está basada en lógica difusa. El control modifica el valor del ciclo de trabajo del interruptor controlado mediante modulación por ancho de pulso, para asegurar un valor específico en el voltaje de salida del convertidor. El control fue validado experimentalmente en un convertidor de potencia operando tanto para funcionamiento en modo reductor como para el funcionamiento en modo elevador. La simulación se realizó en Matlab/Simulink. Un banco de pruebas fue construido con base en un convertidor CD-CD de 2 kW y el algoritmo de control fue implementado por medio de Labview y CompactRIO.
... Very often, the output variable is the duty ratio used to control the DC-DC converter (Sanaa et al., 2016). Besides, there are various inputs, chosen particularly from the characteristics of the battery model (Rameshkumar and Arumugam, 2009;Ramadan, 2017). The used model allows for an adequate presentation of a real battery behaviour. ...
... Very often, the output variable is the duty ratio used to control the DC-DC converter (Sanaa et al., 2016). Besides, there are various inputs, chosen particularly from the characteristics of the battery model (Rameshkumar and Arumugam, 2009;Ramadan, 2017). The used model allows for an adequate presentation of a real battery behaviour. ...
... Los pasos a seguir en el diseño del controlador por medio de lógica difusa son [5]: ...
Resumen-En este documento se presenta el diseño y simulación de dos controladores para un convertidor cd-cd de medio puente, uno para el modo subida y otro para el modo bajada. Estos controladores son parte de un sistema de administración de Energía (SGE) para el proyecto denominado "Sistema de Ahorro de Energía para los trenes de la Ciudad de México". El diseño de los controladores se realizó usando un algoritmo de control inteligente basado en lógica difusa que permite el desarrollo del controlador de manera efectiva sin necesidad de usar modelos matemáticos del convertidor y la planta. La simulación se realizó por medio de Matlab/Simulink, lo que permite tener resultados confiables de los controladores y su funcionamiento aún antes de su construcción física. Al final del documento se presentan los resultados obtenidos, las conclusiones y los lineamientos para el trabajo futuro. Palabras clave-Control, Supercapacitor, Convertidor CD-CD, Lógica difusa.
... The operating parameters of a Buck converter were predicted by a continuous-time model and the fault ratio in determination of operating parameters was reduced [2]. Fuzzy controlled resonant Buck converter was developed and the load decays were improved [3]. A neuro-fuzzy controller was designed for a nonlinear Buck converter and the circuit parameters were determined by the controller. ...
Nowadays, power electronics systems developed need small size, reliable, high quality and efficient switch mode power supplies. However, switch mode power supplies also require determining the operating parameters accurately for achieving intended energy conversion effectively and faultlessly. In this study, an interactive and object oriented parameter determination system was designed for Buck, Boost, Buck-Boost and Cuk converter topologies. Users have used the system interface easily through the interactivity of the system and the user requests have been accomplished quickly through the object oriented programming. Accuracy and reliability of the system have been tested separately for each type of the converter and it has been shown that the performance in the process of determining the parameters of the system is effective and optimum.
—This The Pulse Width Modulation (PWM) DC-to-AC inverter has been widely used in many applications due to its circuit simplicity and rugged control scheme. It is however driven by a hard-switching pulse width modulation (PWM) inverter, which has low switching frequency, high switching loss, high electro-magnetic interference (EMI), high acoustic noise and low efficiency, etc. To solve these problems of the hard-switching inverter, many soft-switching inverters have been designed in the past. Unfortunately, high device voltage stress, large dc link voltage ripples, complex control scheme and so on are noticed in the existing soft-switching inverters. This proposed work overcomes the above problems with simple circuit topology and all switches work in zero-voltage switching condition. Comparative analysis between conventional open loop, PI and fuzzy logic based soft switching inverter is also presented and discussed. Keywords— Zero voltage switching, Inverter, Dc link, PI controller, Fuzzy logic system control ,Modulation strategy, Soft switching
In this paper a study of the fuzzy logic controller for ZCS Boost converter is presented. The fuzzy logic controller provides an adaptive control for better system performance and it is used for controlling the non-linear processes. FLC is designed to regulate the output voltage of the converter. The converter is modeled and analyzed using Matlab/Simulink software and it was designed in an closed-loop configuration. Simulations have shown its accuracy and they confirm the validity of technique used.
