Multifrequency averaging of DC/DC converters

Caliskan, V.; Verghese, O.C.; Stanković, A.M.

doi:10.1109/63.737600

Cited by 237 publications

(114 citation statements)

References 9 publications

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“…The simulation models of the HVDC converter considering the fundamental component and necessary harmonic components of converter under the asymmetrical conditions of AC system are presented based on dynamic phasors theory in [7]. What's more, the dynamic phasors theory has been used in modelling and analysis of solid state transformer [8,9], thyristor-controlled series capacitor [10,11], unified power flow controller [12,13], dc-dc converters [14], multiconverter ac systems [15] and other power electronic devices or power systems with power electronic devices successfully. However, the dynamic phasors simulation model of HVDC systems considering the fundamental component and harmonic components of the converter under the symmetrical condition of AC system theory hasn't been researched and the harmonic components of the converter of HVDC systems should be considered to reflect the dynamic characteristics of HVDC systems more accurately.…”

Section: Introductionmentioning

confidence: 99%

Modelling and Simulation of HVDC Systems Considering the Harmonics of Converter Based on Dynamic Phasors Theory

Luo¹,

Liu²,

Xu³

et al. 2017

Proceedings of the 2017 2nd International Conference on Automation, Mechanical and Electrical Engineering (AMEE 2017)

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Abstract-This paper proposes a dynamic phasors model of HVDC systems including the converter, DC line and control when the AC systems are symmetrical and analyses the simulation process of the proposed dynamic phasors model. The proposed dynamic phasors model can rapidly reflect the dynamic characteristics of HVDC systems including the harmonics characteristics of the converter of HVDC systems at the AC system side. Simulation results among the dynamic phasors models and EMR model are compared and the simulation results confirm the validity and accuracy of the proposed dynamic phasors model.

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Section: Introductionmentioning

confidence: 99%

Modelling and Simulation of HVDC Systems Considering the Harmonics of Converter Based on Dynamic Phasors Theory

Luo¹,

Liu²,

Xu³

et al. 2017

Proceedings of the 2017 2nd International Conference on Automation, Mechanical and Electrical Engineering (AMEE 2017)

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“…only for = 0: x av (t) = x 0 . In that sense (18) can be interpreted as a generalization of (8). To the best of our knowledge, an analysis of how the dynamic phasor model (17) approximates the behavior of the switched system (3) has not been proposed in the literature yet.…”

Section: A Dynamic Phasor Modelmentioning

confidence: 99%

“…The approximation of the variables x with a Fourier series can be seen as a generalized averaged model [17], [18]. The essence in phasor dynamic modeling is to retain only the relatively large Fourier coefficient to capture the interesting behavior of the system.…”

Section: A Dynamic Phasor Modelmentioning

confidence: 99%

An overview on averaging for pulse-modulated switched systems

Pedicini

Vasca

Iannelli

et al. 2011

IEEE Conference on Decision and Control and European Control Conference

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Abstract-Averaging of fast switching systems is an effective technique used in many engineering applications. Practical stability and control design for a nonsmooth switched system can be inferred by analyzing the smooth averaged system. In this paper we overview the few formal approaches proposed in the literature to deal with the averaging of nonsmooth systems. The dithering, the phasor dynamics and the hybrid framework techniques are recast and compared by considering pulsemodulated switched linear systems as the common modeling platform.

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“…Harmonic Balance (HB) has been long used to improve the accuracy of the theoretical predictions in the analysis of power converters (see, for example [13,14]) based on averaged models. This paper also proposes the use of the HB method to compute current reference approximations that approximately satisfy the specific Abel ODE.…”

Section: Introductionmentioning

confidence: 99%

Harmonic balance‐based control of a boost DC/AC converter

Olm

Biel

Spinetti-Rivera

et al. 2011

Circuit Theory & Apps

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SUMMARYThe achievement of step-up inversion with a boost DC/AC converter requires appropriate periodic references for inductor currents, which have to satisfy ordinary differential equations (ODE) of the Abel type. These are equations with highly unstable solutions for which the existence of periodic solutions remains unproved. Hence, the studies reported so far in this subject obtain periodic output voltages that approximately track the expected profile using different periodic current references that do not exactly satisfy the Abel ODE. However, neither an explanation of why are periodic output voltages still obtained, nor an assessment of the output voltage error is provided. This paper analyzes the effect of using periodic current references in a Lyapunov-based controlled boost DC/AC converter performing step-up inversion tasks. It is shown that, for sufficiently accurate current references, the system exhibits asymptotically stable periodic solutions with bounded error. Moreover, the paper propounds the use of Harmonic Balance (HB)-based techniques to obtain such current references. Simulation and experimental results confirm that this choice yields periodic output voltages with an error that may be lowered using higher HB approximations.

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Multifrequency averaging of DC/DC converters

Cited by 237 publications

References 9 publications

Modelling and Simulation of HVDC Systems Considering the Harmonics of Converter Based on Dynamic Phasors Theory

Modelling and Simulation of HVDC Systems Considering the Harmonics of Converter Based on Dynamic Phasors Theory

An overview on averaging for pulse-modulated switched systems

Harmonic balance‐based control of a boost DC/AC converter

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