Bifurcation analysis of photovoltaic-battery hybrid power system with constant power load

Huang, Meng; Wei, Liang; Liu, Yi; Zha, Xiaoming

doi:10.1109/ecce.2016.7854900

Cited by 4 publications

(2 citation statements)

References 21 publications

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“…Power electronic circuits often exhibit a load switching phenomenon , as does a DC‐DC converter with a CPL, and phenomena such as hopping, removal, or cut‐in may occur under different conditions, referred to as switching constant power load (SCPL) in this paper. SCPL can easily cause abrupt changes in the terminal voltages and currents, leading to unstable system operation and even irregular nonlinear dynamic behavior such as bifurcation and chaos.…”

Section: Introductionmentioning

confidence: 99%

A method for calculating the Lyapunov exponent spectrum of DC‐DC converter feeding with a switching constant power load

Huang

2020

IEEJ Transactions Elec Engng

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Nonlinear dynamic behaviors such as the bifurcation and chaos of DC‐DC converters with switching constant power load are studied in this paper. Based on the consideration of constant power load switching, a discrete iterative mapping model of the system including the switching process is established, and its Lyapunov exponent spectrum algorithm is derived. The main procedure of the algorithm is as follows: Firstly, the system is divided into six smooth segments, and the zero‐time discontinuous mapping of the load and mode switching is introduced. Secondly, the local mapping of each smooth segment and the zero‐time discontinuous mapping of the switching phase are used to construct the composite Poincaré mapping of the system by the chain rule, and then the discrete iterative mapping model of the system is established. Finally, the Lyapunov exponent spectrum algorithm of the system is derived based on the model to determine the type of nonlinear dynamic behavior of the system. This algorithm overcomes the problems of the existing methods, which lead to inaccurate results due to the neglect of the switching process, and achieves the purpose of accurately describing the dynamic characteristics of power electronic circuits. The simulation and experimental results have verified the validity of the proposed model and algorithm. © 2020 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

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Section: Introductionmentioning

confidence: 99%

A method for calculating the Lyapunov exponent spectrum of DC‐DC converter feeding with a switching constant power load

Huang

2020

IEEJ Transactions Elec Engng

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“…These nonlinear behaviors may cause strange or irregular phenomena in distributed power systems. Therefore, in recent years, increasing attention has been devoted to the nonlinear behavior of DC-DC converters with CPLs [3,4]. DC-DC converters with CPLs are piecewise smooth dynamical systems; these systems feature two or more switching modes, and there are voltage or current boundaries between different switching modes [5].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Modeling Method and Bifurcation Characteristics Analysis for Buck Converter with Constant Power Load

Huang

2019

Mathematical Problems in Engineering

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We establish a novel hybrid model of a continuous conduction mode buck converter with a constant power load based on the mixed logical dynamical modeling method. Based on the proposed model, the influence of the constant power load’s negative impedance (RCPL) on the dynamics of the buck converter with a constant power load is studied by computing bifurcation diagrams and the spectrum of the largest Lyapunov exponents with the variation of the absolute value of RCPL. Numerical results show that the system’s bifurcations exhibit two different types of behavior, namely, Hopf bifurcations and state jumping. Moreover, the accuracy and effectiveness of the established mathematical model are verified via simulation and experimental results. Because of including different discrete mappings of the system exhibited in different working modes in a unified model, the proposed hybrid model solves the problem of choosing different discrete mappings according to different working models. That is, the hybrid model in this paper provides a new unified model for future research on the dynamic properties and design of controllers for such systems.

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

Huang

Sun

et al. 2017

IEEE J. Emerg. Sel. Topics Power Electron.

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Bifurcation analysis of photovoltaic-battery hybrid power system with constant power load

Cited by 4 publications

References 21 publications

A method for calculating the Lyapunov exponent spectrum of DC‐DC converter feeding with a switching constant power load

A method for calculating the Lyapunov exponent spectrum of DC‐DC converter feeding with a switching constant power load

Hybrid Modeling Method and Bifurcation Characteristics Analysis for Buck Converter with Constant Power Load

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

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