Bifurcation-Based Stability Analysis of Photovoltaic-Battery Hybrid Power System

Huang, Meng; Ji, Huizi; Sun, Jianjun; Wei, Liang; Zha, Xiaoming

doi:10.1109/jestpe.2017.2681125

Cited by 48 publications

(26 citation statements)

References 25 publications

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“…x mppt (10) where K p1 and T i1 are the gain and time constants of PI controller in the MPPT voltage loop, respectively. The state variable is denoted by x boost = [u Cin , i Lb , x mppt ] T .…”

Section: Stabilitymentioning

confidence: 99%

“…Furthermore, these structures involve various types of converters, including the Boost converter, Buck-Boost converter [4,5], Flyback converter [6], and resonant push-pull dc-dc converter [7]. Power electronic converter is an inherently strong nonlinear system and it presents various nonlinear phenomena [8][9][10]. Thus, in order to design the circuit parameters and control parameters of the PV system, it is necessary to establish the explicit model and analyze its stability.…”

Section: Introductionmentioning

confidence: 99%

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Study on a Simplified Structure of a Two-Stage Grid-Connected Photovoltaic System for Parameter Design Optimization

Xie¹,

Luo²,

Qiu³

et al. 2019

Energies

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Conventional parameter designs of two-stage grid-connected photovoltaic (PV) system relied on its mathematical model of the cascade structure (CS), but the procedure is excessively cumbersome to implement. Besides, for a two-stage converter system, the coupling interaction between the power converters can directly lead to a poor parameter design. To overcome this drawback, this paper uses a simplified structure (SS) of single-phase two-stage grid-connected PV system to better design the parameters of the front-stage dc-dc converter. After establishing the small-signal model for SS and CS in the PV system, the relative eigenvalue sensitivity is used as the criterion for judging the influence of some parameters on the stability of the two structures. The stable boundary of MPPT control parameters is compared and discussed in SS and CS, respectively. In addition, the relationship between the front-stage dc-dc converter and the rear-stage dc-ac inverter is analyzed by the modal participation factor calculated in CS. An experiment is also performed at the end of this paper to further verify the feasibility of using SS to design the parameters of the dc-dc converter in the PV system.

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Section: Stabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study on a Simplified Structure of a Two-Stage Grid-Connected Photovoltaic System for Parameter Design Optimization

Xie¹,

Luo²,

Qiu³

et al. 2019

Energies

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show abstract

“…B. Zero sequence and second harmonic dynamics 1) DC side: circulating current of (6) is transformed into (14) in the DQ2 frame. (14) where Z c o , Z c d2 and Z c q2 are nonlinear products in the dq frame.…”

Section: A Fundamental Frequency Dynamicsmentioning

confidence: 99%

“…Based on multi-parameter bifurcation theory, [12] explains the mechanism of sub-synchronous oscillations between the wind farm and the grid. The voltage source converter's (VSC) catastrophic bifurcation phenomenon caused by voltage drop is analyzed in [13] by Huang et al [14] analyzes the bifurcation of photovoltaic hybrid power system.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Bifurcation Behaviors in MMC Connected to a Weak Grid

Zong

Lyu

Cai

et al. 2018

IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society

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Conventional small-signal approaches present obvious advantages applied in analyzing closed-loop stability in power electronics systems. However, linearized models fall short of predicting any nonlinear behavior which means not able to acquire the accurate stability margin. This paper mainly analyzes bifurcation behaviors of the Modular Multilevel Converter (MMC) connected to a weak grid and calculates the parameters' precise stability margin. The nonlinear continuoustime averaging model of the MMC is established to study two common bifurcation phenomena, i.e. Saddle-Node bifurcation (SNB) and Hopf bifurcation (HB). Characteristics of limit cycles caused by HB are analyzed by changing the value of a certain parameter. The theoretical analysis has been validated by the time domain simulation results.

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“…The source of energy can be transferred to DC load and AC loads simultaneously with the help of power converters [14]. For rural electrification, photo voltaic based system is discussed in [15]. It combines multiple energy sources to provide power to the loads with the help of bifurcation process.…”

Section: Introductionmentioning

confidence: 99%

Energy Storage in Battery for Remote Area Using Wind Dfig Generation

M¹,

P²,

Praveenraj³

2019

International Journal of Advances in Signal and Image Sciences

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In this study, an efficient system is designed to maintain the Direct Current (DC) link voltage and improving voltage gain at remote side inverter using Hysteresis Controller (HC). The energy from wind is fed to the Remote Area Power Systems (RAPS). There is a need to control the changing frequency due to environmental changes in order to sustain the voltage at inverter side. It is achieved by the HC controller that provides control signals to inverter switches. The two-levels of Energy Storage System (ESS) are used as battery at source side and transformer at load side. The battery stores energy from the power converter stage through bi-directional converter where the energy flows in both forward and reverse direction. The frequency regulation based RAPS system is implemented using MATLAB/Simulink tool.

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Bifurcation-Based Stability Analysis of Photovoltaic-Battery Hybrid Power System

Cited by 48 publications

References 25 publications

Study on a Simplified Structure of a Two-Stage Grid-Connected Photovoltaic System for Parameter Design Optimization

Study on a Simplified Structure of a Two-Stage Grid-Connected Photovoltaic System for Parameter Design Optimization

Analysis of Bifurcation Behaviors in MMC Connected to a Weak Grid

Energy Storage in Battery for Remote Area Using Wind Dfig Generation

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