Photovoltaic inverter bifurcation

The corresponding structure is shown in the following figure. After receiving the voltage adjustment command, the photovoltaic sub-station distributes the reactive power to the photovoltaic inverter and the static reactive power generator according to a predetermined strategy, so as to achieve the goal of voltage adjustment (see Fig. 3). The corresponding structure is shown in the following figure. After receiving the voltage adjustment command, the photovoltaic sub-station distributes the reactive power to the photovoltaic inverter and the static reactive power generator according to a predetermined strategy, so as to achieve the goal of voltage adjustment (see Fig. 3).

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Influence of automatic voltage control on small signal …

The corresponding structure is shown in the following figure. After receiving the voltage adjustment command, the photovoltaic sub-station distributes the reactive power to the photovoltaic inverter and the static reactive power generator according to a predetermined strategy, so as to achieve the goal of voltage adjustment (see Fig. 3).

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Bifurcation analysis and control in a second-order DC–AC inverter …

The evolution of complex dynamics in the second-order inverter with quasi-proportional integral resonance (PIR) controller is analyzed detailly in this paper, it is revealed that this inverter''s …

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Research of Photovoltaic Grid System Voltage Stability Based …

In grid-connected photovoltaic system, the inverter, grid device, power electronic devices etc. They consume a large quantity of reactive power; mostly in distribution system, a perceptual load ...

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Modeling and Bifurcation Analysis for Photovoltaic Single …

Operating with natural convection cooling, this PV inverter achieves 98.0% efficiency at 60% of load and 97.8% efficiency at full load. The power density of the packaged PV inverter is $5.8W/inch^3$ .

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Bifurcation analysis and control in a DC–AC inverter with PID ...

Aiming at the rich bifurcation and chaotic characteristics in the inverter with proportion integral derivative (PID) controller, the discrete iterative model of such an inverter was derived based on the stroboscopic mapping theory; the nonlinear evolution and the cause of instability in this inverter are analyzed.

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Modeling and Bifurcation Analysis for Photovoltaic Single …

This article proposes a single-stage, single-sourced ACHB trinary inverter topology without presources. Then, a control strategy using unity horizon length finite-control-set model …

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Numerical modeling and research on nonlinear dynamic ...

In this paper, the piecewise smooth state equation of a two-stage photovoltaic grid-connected (TPG) inverter is established and studied; based on the solution to the piecewise smooth state equation of the TPG inverter, effects of the photovoltaic array voltage on nonlinear dynamical behaviors of the TPG inverter are analyzed by using bifurcation diagram, folded …

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A Bifurcation between ON and OFF Grid PV system

Read values on display can perform the simplest monitoring of an inverter-display (usually LCD) is part of almost every grid-connected inverter. In such cases the most important parameters related to the inverter and grid are available on the LCD screen. Values such as power of PV array, power of AC grid, current of PV array are normally available.

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A Novel Chaos Control Strategy for a Single-Phase Photovoltaic …

The single-phase photovoltaic energy storage inverter represents a pivotal component within photovoltaic energy storage systems. Its operational dynamics are often intricate due to its inherent characteristics and the prevalent usage of nonlinear switching elements, leading to nonlinear characteristic bifurcation such as bifurcation and chaos. In this …

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(PDF) A Novel Chaos Control Strategy for a Single-Phase Photovoltaic ...

The single-phase photovoltaic energy storage inverter represents a pivotal component within photovoltaic energy storage systems. Its operational dynamics are often intricate due to its inherent ...

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The Review of Grid-Connected Photovoltaic Power System and …

This article introduces the classification and composition of Grid-connected Photovoltaic Power System, and the research status of its nonlinear behavior. In the Photovoltaic Power System, photovoltaic array, DC/DC converter, DC/AC inverter and nonlinear load will appear lots of nonlinear dynamic behavior such as bifurcation and chaos phenomena.

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Research on the complex dynamical behavior of H-bridge inverter …

Complex dynamical behaviors such as bifurcation and chaos exist in H-bridge inverter with RLC load, and these nonlinear behaviors will greatly increase the harmonic content of the output current ...

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Stability and bifurcations in low inertia PV rich power networks

The bifurcation analysis reveals a super-critical Hopf bifurcation, linked to the level of generation from grid-following PV inverter, as the main limiting factor of the feasible operating region. The particular mode (eigenvalue) that exhibits the instability is associated with the SG''s field and stator flux.

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International Journal of Bifurcation and Chaos

A study of a DC–DC boost converter fed by a photovoltaic (PV) generator and supplying a constant voltage load is presented. The input port of the converter is controlled using fixed frequency pulse width modulation (PWM) based on the loss-free resistor (LFR) concept whose parameter is selected with the aim to force the PV generator to work at its maximum …

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Nonlinear dynamic behavior of high-frequency isolation …

analysis of nonlinear behaviors, such as bifurcation and chaos [1, 2]. In power electronic devices, inverters play a key role in energy transfer. Inverter technology is a core technology of photovoltaic power generation systems. The nonlinear behavior research of DC/AC inverters started at the beginning of the 21st century.

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Nonlinear dynamic behavior of high-frequency isolation …

High-frequency isolation quasi-Z-source inverter is extensively used in photovoltaic power generation systems due to its high step-up voltage ratio, high conversion efficiency, and electrical isolation. ... this type of inverter is likely to cause bifurcation and chaos in the system due to improper selection of parameters or external ...

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Slow-Scale Bifurcation Analysis in Current-source H-Bridge Inverter

This paper discusses the slow-scale instability in the current-source inverter which has potential advantages in the PV system. Simulations show that the slow-scale instability occurs in the current-source inverter in the whole line cycle. The averaged model is derived to analyze the slow-scale instability. According to the Jacobian matrix derived from the averaged model, …

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The stability of LCL grid-connected inverter based on ...

The discrete model of the grid-connected inverter with LCL filter under the passive damping and PI control is built based on the stroboscopic map. Using the discrete model, the folded diagrams and ...

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BIFURCATION ANALYSIS IN A PWM CURRENT-CONTROLLED H-BRIDGE INVERTER ...

This paper introduces the complete bifurcation analysis in a PWM current-controlled H-Bridge inverter in a wide parameter space. First, we briefly explain the behavior of the waveform in the circuit in terms of the switched dynamical system.

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Modeling and Bifurcation Analysis for Photovoltaic Single ...

Modeling and Bifurcation Analysis for Photovoltaic Single-Sourced Trinary Inverter With Auxiliary Floating Capacitors Controlled by Finite-Control-Set Model Predictive Control

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A strategy of PI + repetitive control for LCL-type photovoltaic inverters

Due to the traditional grid-connected current control method of single Proportional Integral (PI) and Repetitive Control (RC) strategies, the photovoltaic inverter output current will have a distortion problem, which can not only maintain the stability of the whole photovoltaic system, but also the current quality of the photovoltaic inverter grid-connected system is …

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International Journal of Bifurcation and Chaos

This paper deals with modeling and bifurcation analysis of two-stage Boost inverters. Since the effect of the nonlinear interactions between source-stage converter and load-stage inverter causes the "hidden" second-harmonic current at the input of the downstream H-bridge inverter, an observer-pattern modeling method is proposed by removing time variance …

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Bifurcation Analysis and Chaos Control of Carrier Phase …

We find that this inverter can exhibit multiperiod bifurcation, tangential bifurcation and paroxysmal chaos within certain ranges of control coefficients and other circuit parameters, which will influence the system''s stability seriously. On the basis of this discovery, the sinusoidal time-delay feedback control method is proposed.

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Fast-Scale Bifurcation Analysis in One-Cycle Controlled H …

According to the Jacobian matrix derived from the discrete-time model, the theoretical analysis shows that the fast-scale instability manifests itself as a period-doubling bifurcation occurs, which reveals the intrinsic mechanism of the instability of one-cycle controlled H-bridge inverter.

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Study on nonlinear dynamic behavior and stable operation …

In this paper, the piecewise smooth state equation of a two-stage photovoltaic grid-connected (TPG) inverter is established and studied; based on the solution to the piecewise smooth state ...

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International Journal of Bifurcation and Chaos

References Abdel-Rahim, N. M. & Quaicoe, J. E. [1996] " Analysis and design of a multiple feedback loop control strategy for single-phase voltage-source UPS inverters," IEEE Trans. Power Electron. 11, 532–541. Crossref, Web of Science, Google Scholar; Asahara, H. & Kousaka, T. [2011] " Bifurcation analysis in a PWM current-controlled H-bridge inverter," Int. J. …

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Bifurcation Analysis and Chaos Control of Carrier Phase …

We find that this inverter can exhibit multiperiod bifurcation, tangential bifurcation and paroxysmal chaos within certain ranges of control coefficients and other circuit …

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Bifurcation analysis and chaos control in a fourth-order DC

There are complex nonlinear phenomena such as bifurcation and chaos in a sinusoidal pulse-width modulated fourth-order H-bridge inverter, which can reduce the stability …

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Bifurcation analysis and control in a second-order DC-AC inverter …

In order to analyze bifurcation phenomena and stability domain of parameter in the Current Proportion controlled Non-isolated Photovoltaic Grid-connected Inverter with H6-type (CPNPGI-H6) system ...

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Customer Feedback on Our Energy Storage Solutions

  1. Reply

    Emily Johnson

    June 10, 2024 at 2:30 pm

    We are thrilled with the results from working with EK ENERGY on our hybrid energy storage solution. The system has been a major improvement for our rural facility, providing consistent power during both high demand and grid disruptions. The team ensured a smooth setup, significantly cutting down on our diesel fuel use, with savings over 80%.

  2. Reply

    David Thompson

    June 12, 2024 at 10:45 am

    EK ENERGY's microgrid technology has been a perfect fit for our remote telecom facility. With their efficient inverter system and solar modules, we have seen a marked improvement in operational uptime. The system's seamless integration with both solar and backup generators has been crucial in ensuring reliability for off-grid setups.

  3. Reply

    Sarah Lee

    June 13, 2024 at 4:15 pm

    The solar microgrid solution from EK ENERGY has perfectly met the energy needs of our eco-resort. With their integrated power station, we can operate round the clock without relying on the national grid. The scalability of the system aligns with our sustainability objectives and gives us flexibility for future expansion.

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