Voltage positive feedback based active method for islanding detection of photovoltaic system with string inverter using sliding mode controller

In this article, a novel hybrid intelligent Proportional Integral Derivative (PID)-based sliding mode controller (IPID-SMC) is proposed to solve the LFC problem for realistic interconnected multi-area power systems. The optimization task for best-regulating parameters of the suggested controller structure is fulfilled by the ant lion optimizer (ALO) technique. To assess the usefulness and practicability of the suggested ALO optimized IPID-SMC controller, three test systems – that is, four-area hybrid power system, two-area reheat thermal-photovoltaic system and two-area multi-sources power system – are employed. Different nonlinearities such as generation rate constraint (GRC) and governor dead band (GDB) as a provenance of physical constraints are taken into account in the model of the two-area multi-sources power systems to examine the ability of the proposed strategy for handling the practical challenges. The acceptability and novelty of the ALO-based IPID-SMC controller to solve the systems mentioned above are appraised in comparison with some recently reported approaches. The specifications of time-domain simulation disclose that the designed proposed controller provides a desirable level of performance and stability compared with other existing strategies. Furthermore, to check the robustness of the suggested technique, sensitivity analysis is fulfilled by varying the operating loading conditions and plant parameters within a particular tolerable range.

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Sliding mode controller for the single-phase grid-connected photovoltaic system

Applied Energy ◽

10.1016/j.apenergy.2005.11.004 ◽

2006 ◽

Vol 83 (10) ◽

pp. 1101-1115 ◽

Cited By ~ 105

Author(s):

Il-Song Kim

Keyword(s):

Single Phase ◽

Sliding Mode ◽

Photovoltaic System ◽

Sliding Mode Controller

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Sliding-mode controller for a photovoltaic system based on a Cuk converter

International Journal of Electrical and Computer Engineering (IJECE) ◽

10.11591/ijece.v11i3.pp2027-2044 ◽

2021 ◽

Vol 11 (3) ◽

pp. 2027

Author(s):

Carlos Andrés Ramos-Paja ◽

Daniel Gonzalez-Motoya ◽

Juan Pablo Villegas-Seballos ◽

Sergio Ignacio Serna-Garces ◽

Roberto Giral

Keyword(s):

Global Stability ◽

Sliding Mode ◽

Photovoltaic System ◽

Sliding Mode Controller ◽

Formal Proofs ◽

Pv System ◽

Cuk Converter ◽

Pv Systems ◽

Operation Conditions ◽

Wide Range

The wide range of step-up and step-down input-output voltage characteristic of the Cuk converter makes it a good candidate to interface photovoltaic arrays in both classical and distributed maximum power point tracking systems. Because its two inductor structure, Cuk converters have continuous input and output currents, which reduce the additional filtering elements usually required for interfacing dc/dc converter topologies. However, PV systems based on Cuk converters usually do not provide formal proofs of global stability under realistic conditions, which makes impossible to ensure a safe operation of the PV installation. Therefore, this paper proposes a high performance sliding-mode controller for PV systems based on Cuk converters, which regulates the PV voltage in agreement with the commands imposed by a MPPT algorithm, rejecting both load and environmental perturbations, and ensuring global stability for real operation conditions. Finally, the performance of the regulated PV system is tested using both simulations and experiments.

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Design of Super Twisting Sliding Mode Controller for a Three-Phase Grid-connected Photovoltaic System under Normal and Abnormal Conditions

Energies ◽

10.3390/en13153773 ◽

2020 ◽

Vol 13 (15) ◽

pp. 3773

Author(s):

Kamran Zeb ◽

Tiago Davi Curi Busarello ◽

Saif Ul Islam ◽

Waqar Uddin ◽

Kummara Venkata Guru Raghavendra ◽

...

Keyword(s):

Steady State ◽

Dynamic Behavior ◽

Reactive Power ◽

Sliding Mode ◽

Operating Conditions ◽

Photovoltaic System ◽

Frequency Variation ◽

Sliding Mode Controller ◽

Pv System ◽

Three Phase

The novelty behind the research in this paper is to investigate the Super Twisting Sliding Mode Controller (ST-SMC) for efficiently injecting both active and reactive power under normal and abnormal operating conditions for a three-phase grid-connected photovoltaic (PV) system. The ST-SMC is aimed to inject sinusoidal current to the grid with low Total Harmonic Distortion (THD), to avoid chattering with easy real implementation, and to enhance the quality of disturbance rejection and sensitivity to parameter variation. The test under normal conditions includes initialization, steady state behavior, dynamic behavior, and interrupting the injection of acting and reactive power while the abnormal conditions consists of voltage sag, voltage swell, frequency variation, DC-link variation, and inclusion of 5th harmonics, etc. The phase lock loop used for synchronization is based on a synchronous reference frame that works well under distorted grids and nonideal. Automatic code is generated in PSIM 9.1 for hardware implementation in the DSP board TMS32F28335 from Texas Instruments while code composer studio 6.2.0 is used for debugging. The real time testing is executed using Typhoon Hardware in Loop (HIL) 402 device on the DSP board. The results authenticate the fastness, effectiveness, and robustness for both steady state and dynamic behavior under various scenarios of the designed controller.

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