Investigations of the usefulness of average models for calculations characteristics of buck and boost converters at the steady state

Górecki, Krzysztof; Zarębski, J.

doi:10.1002/jnm.721

Cited by 6 publications

(5 citation statements)

References 8 publications

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“…In the papers cited above, the computations were made assuming that power is lost in semiconductor devices only when they are turned on; whereas, power losses related to switching were neglected. This approach is justified only when the switching time of these devices is much shorter than the period of the control signal [96]. In the paper [97], the limitations of the averaged model of the PWM switch with the IGBT were analysed.…”

Section: Methods Using Averaged Modelsmentioning

confidence: 99%

Methods of Fast Analysis of DC–DC Converters—A Review

Górecki

2021

Electronics

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The paper discusses the methods of fast analysis of DC–DC converters dedicated to computer programmes. Literature methods of such an analysis are presented, which enable determination of the characteristics of the considered converters in the steady state and in the transient states. The simplifications adopted at the stage of developing these methods are discussed, and their influence on the accuracy of computations is indicated. Particular attention is paid to the methods of fast analysis of DC–DC converters, taking into account thermal phenomena in semiconductor devices. The sample results of computations of the DC–DC boost type converter obtained with the use of the selected methods are presented. The scope of application of particular computation methods and their duration times are discussed. Computations were performed with the use of SPICE and PLECS.

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Section: Methods Using Averaged Modelsmentioning

confidence: 99%

Methods of Fast Analysis of DC–DC Converters—A Review

Górecki

2021

Electronics

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“…Theorem 1: For the buck converter control system, the difference equation model is shown in (19). If the above conditions are met and f 0 , f 1 , and µ are bounded, then y k will converge, that is, the control system is stable.…”

Section: Stability Analysis Of Elm-pid Control Systemmentioning

confidence: 99%

“…Therefore, the state-space averaging method can be used to establish a unified form of state equation as (3) show [19]:…”

Section: Mathematicl Description Of the Financial Systemmentioning

confidence: 99%

Design of PID Controller Based on ELM and Its Implementation for Buck Converters

Yang

Wang

et al. 2021

Int. J. Control Autom. Syst.

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Buck converter is a kind of converter device with high efficiency, wide adjustable output voltage, small loss, small size and light weight. Its circuit has nonlinearity and will exhibit abundant nonlinear phenomena with the change of circuit parameters, resulting in unstable output voltage and being susceptible to load and external disturbances. Therefore, a control method based on Extreme Learning Machine (ELM) combined with a proportionalintegral-derivative (PID) controller is proposed in this paper and used for output voltage control of buck converter. Firstly, the mathematical model of buck converter in Continuous Conduction Mode (CCM) is established by the state space averaging method. Then the PID tuning algorithm is designed in combination with ELM, and the stability analysis of the model is carried out. Finally, the simulation experiment is carried out under different disturbances. By comparing with the open-loop control strategy, the effectiveness of the proposed ELM-PID control strategy is verified, indicating that the proposed method can achieve the stability of output voltage and good dynamic response.

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“…The considered decrease in accuracy results from a significant deterioration in accuracy of losses computations in the diode contained in the boost converter. This problem is analysed in detail in the paper [23].…”

Section: The Form Of the Modelmentioning

confidence: 99%

International Journal of Electronics and Telecommunications

Górecki¹

2020

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DC-DC converters are popular switch-mode electronic circuits used in power supply systems of many electronic devices. Designing such converters requires reliable computation methods and models of components contained in these converters, allowing for accurate and fast computations of their characteristics. In the paper, a new averaged model of a diodetransistor switch containing an IGBT is proposed. The form of the developed model is presented. Its accuracy is verified by comparing the computed characteristics of the boost converter with the characteristics computed in SPICE using a transient analysis and literature models of a diode and an IGBT. The obtained results of computations proved the usefulness of the proposed model.

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Investigations of the usefulness of average models for calculations characteristics of buck and boost converters at the steady state

Cited by 6 publications

References 8 publications

Methods of Fast Analysis of DC–DC Converters—A Review

Methods of Fast Analysis of DC–DC Converters—A Review

Design of PID Controller Based on ELM and Its Implementation for Buck Converters

International Journal of Electronics and Telecommunications

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