Maximum Power Point Tracking and Voltage Regulation of Two-Stage Grid-Tied PV System Based on Model Predictive Control

Ma, Miaomiao; Liu, Xiangjie; Lee, Kwang Y.

doi:10.3390/en13061304

Cited by 25 publications

(14 citation statements)

References 39 publications

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“…The step-up converter, also named DC-DC boost converter, is widely used in many applications such as photovoltaic, fuel cells and wind power systems [39][40][41][42]. As shown in Figure 2, a DC-DC boost converter consists of inductance (L), switching element (transistor), a diode (D) and a capacitor (C).…”

Section: Step-up Convertermentioning

confidence: 99%

Design and Implementation of High Order Sliding Mode Control for PEMFC Power System

et al. 2020

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Fuel cells are considered as one of the most promising methods to produce electrical energy due to its high-efficiency level that reaches up to 50%, as well as high reliability with no polluting effects. However, scientists and researchers are interested more in proton exchange membrane fuel cells (PEMFCs). Thus, it has been considered as an ideal solution to many engineering applications. The main aim of this work is to keep the PEMFC operating at an adequate power point. To this end, conventional first-order sliding mode control (SMC) is used. However, the chattering phenomenon, which is caused by the SMC leads to a low control accuracy and heat loss in the energy circuits. In order to overcome these drawbacks, quasi-continuous high order sliding mode control (QC-HOSM) is proposed so as to improve the power quality and performance. The control stability is proven via the Lyapunov theory. The closed-loop system consists of a PEM fuel cell, a step-up converter, a DSPACE DS1104, SMC and QC-HOSM algorithms and a variable load resistance. In order to demonstrate the effectiveness of the proposed control scheme, experimental results are compared with the conventional SMC. The obtained results show that a chattering reduction of 84% could be achieved using the proposed method.

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Section: Step-up Convertermentioning

confidence: 99%

Design and Implementation of High Order Sliding Mode Control for PEMFC Power System

et al. 2020

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“…In other words, the load control performance such as generator power control and input power factor control is not good because the current converted to DC power is controlled without controlling the current of the generator for controlling the electrical torque. Using the voltage-sec equilibrium condition of the DC/DC converter, the relationship between the duty ratio and the input/output can be expressed as [32]: The structure shown in Figure 3b is a topology used in a large-capacity wind turbine. It is used for large-capacity systems because of its complex structure and control, and its relatively expensive price but high efficiency.…”

Section: Power Converter Topology and Modelingmentioning

confidence: 99%

Power Performance Analysis According to the Configuration and Load Control Algorithm of Power Take-Off System for Oscillating Water Column Type Wave Energy Converters

Roh¹,

Kim²,

Park³

et al. 2020

Energies

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A power take-off (PTO) system for an oscillating water column (OWC) wave energy converter comprises a turbine-generator-power converter. In this study, only the topologies of the power converter that affect the load control algorithm are compared. A power converter for renewable energy is composed of a diode-dc/dc converter and a pulse-width modulation (PWM) converter operating at small and large capacities, respectively. However, selecting a power converter according to the capacity based on the characteristics of the wave energy converter, in which the input energy is highly fluctuating, can significantly reduce the power performance. Thus, to verify load control characteristics according to the topology of the power converter, the turbine-generator-power converter was incorporated in the modeling, and the power performance based on the power converter topology under various wave conditions was analyzed. Further, torque control to obtain the maximum power among load control algorithms was applied under irregular wave conditions, and the power performance and PTO system characteristics according to the torque coefficient were analyzed. The results of this study suggested an increase in the torque coefficient of the maximum power control for the operational stability of the OWC-WEC, and it was confirmed that the RPM characteristics of the PTO system were reduced.

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“…A CCL is responsible for grid synchronization and injection of a high-quality current [2]. Generally, a Proportional Integral (PI) controller is implemented in the VCL, however, due to PV intermittency, a PI controller fails to maintain a constant DCL voltage due to its fixed gain parameters [10]. Therefore, to enhance the system performance, an arbitrary real term is introduced in the PI controller through fractional calculus and named the Fractional Order Proportional Integral (FOPI) controller [11].…”

Section: Introductionmentioning

confidence: 99%

Design and Performance Evaluation of a Step-Up DC–DC Converter with Dual Loop Controllers for Two Stages Grid Connected PV Inverter

et al. 2022

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In this work, a non-isolated DC–DC converter is presented that combines a voltage doubler circuit and switch inductor cell with the single ended primary inductor converter to achieve a high voltage gain at a low duty cycle and with reduced component count. The converter utilizes a single switch that makes its control very simple. The voltage stress across the semiconductor components is less than the output voltage, which makes it possible to use the diodes with reduced voltage rating and a switch with low turn-on resistance. In particular, performance principle of the proposed converter along with the steady state analysis such as voltage gain, voltage stress on semiconductor components, and design of inductors and capacitors, etc., are carried out and discussed in detail. Moreover, to regulate a constant voltage at a DC-link capacitor, back propagation algorithm-based adaptive control schemes are designed. These adaptive schemes enhance the system performance by dynamically updating the control law parameters in case of PV intermittency. Furthermore, a proportional resonant controller based on Naslin polynomial method is designed for the current control loop. The method describes a systematic procedure to calculate proportional gain, resonant gain, and all the coefficients for the resonant path. Finally, the proposed system is simulated in MATLAB and Simulink software to validate the analytical and theoretical concepts along with the efficacy of the proposed model.

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Maximum Power Point Tracking and Voltage Regulation of Two-Stage Grid-Tied PV System Based on Model Predictive Control

Cited by 25 publications

References 39 publications

Design and Implementation of High Order Sliding Mode Control for PEMFC Power System

Design and Implementation of High Order Sliding Mode Control for PEMFC Power System

Power Performance Analysis According to the Configuration and Load Control Algorithm of Power Take-Off System for Oscillating Water Column Type Wave Energy Converters

Design and Performance Evaluation of a Step-Up DC–DC Converter with Dual Loop Controllers for Two Stages Grid Connected PV Inverter

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