Bond graph toolbox for handling complex variable

Umesh, B. S.; Umanand, L.

doi:10.1049/iet-cta.2007.0347

Cited by 7 publications

(6 citation statements)

References 5 publications

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“…In the bond graph model of the converter, most of the research [1–6, 32, 33] established complex mathematical calculations in the MATLAB function to represent the simulation circuit of a time‐varying switch. The new simulation technique proposed in this study was applied to establish the simulation circuits of a time‐varying switch (see Fig.…”

Section: Resultsmentioning

confidence: 99%

“…When the converter was in a steady state, the quiescent point was D. Perturbation and linearisation can be employed in (6) and (8), where x T s represents the dc quiescent value X plus the small ac variation x. Suppose the small ac variation was much smaller than the dc quiescent value.…”

Section: Developing Bond Graph Model Of Time-varying Switch For DC Stmentioning

confidence: 99%

“…The authors in [1–6] proposed the use of an SPJ, a new bond graph element, to replace the time‐varying switch of a converter. The advantages of an SPJ include not only the extended application of 0 and 1 junctions, but also the use of an activated casual bond to indicate ON ( U ) or OFF (

U^{normal′}

) positions.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Structural analysis for dynamic model of time‐varying switch in bond graph – a case study of single phase switch converters

Tseng

Chang

Hung

et al. 2017

IET Power Electronics

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This study proposes a new dynamic model of a time-varying switch bond graph for further improvement of the bond graph modelling method. The previous reference to the time-varying switch only discussed the on and off modes, but the dynamic model of a time-varying switch was not presented. This study proposes a bond graph modelling method of a timevarying switch which is mainly used for obtaining insights into the important dominant behaviour of the switch converter, such as the converter modelling, design of the controller, stability analysis and simulation of the converter; this is the reason why this study does not consider the multi-frequency modelling or generalised state-space averaging as the switch converter of a highfrequency switch behaviour.

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Section: Resultsmentioning

confidence: 99%

Section: Developing Bond Graph Model Of Time-varying Switch For DC Stmentioning

confidence: 99%

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Structural analysis for dynamic model of time‐varying switch in bond graph – a case study of single phase switch converters

Tseng

Chang

Hung

et al. 2017

IET Power Electronics

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“…The bond graph methodology is a power tool for modelling dynamic system based on the characterization of powerexchange phenomena within a system. The idea of the bond graph modelling is the representation of dissipated power as the product flux effort to bind the various junctions to reproduce the system [2].…”

Section: System Modellingmentioning

confidence: 99%

Study on the influence of backlash phenomenon on wind turbine power using bond graph approach

Adlene

Abderrazak

2018

J Braz. Soc. Mech. Sci. Eng.

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This work presents a multi-body model for studying the influence of backlash phenomenon on wind energy using a bond graph approach. This analysis is carried out in two steps; first, the residual technique is used to discriminate between the healthy and the abnormal operating mode. The second one consists in using energy levels calculated from the spectral energy of the residual signals using a moving Hanning window to estimate the faults amplitude. Simulations tests verify the effect of the backlash magnitude on the good functioning of the wind turbine and indicate that the backlash within a certain range has little effect on the wind energy but with the enlargement of backlash, the dynamic response of the system is significantly changed.

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“…The physical meaning of each element is shown in Table 2.3. The models for several electric machines have been developed [80][81][82]. For example, a model for a BLDC PM motor was built using the MODELICA bond graph library in [80] as in Figure 2.23.…”

Section: Examples Of Bond Graph Modelsmentioning

confidence: 99%

Modeling and dynamics analysis of electro-mechanical power-trains

Ji-dong¹

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In the past few decades, the electro-mechanical power-trains (EMPTs) are being used to replace the conventional power-trains in a few transportations, such as "More Electric Aircraft" and "Hybrid Electric Vehicle", to improve the energy efficiency and reduce greenhouse emissions. In the EMPTs, the electrical components such as electric machines, power electronics, controllers, and batteries are introduced. To accommodate these new components, the new power-train configurations are also involved. Due to the new components and new configurations, the application of the EMPTs gets a few challenges, including: (1) the nonlinear dynamics in the power-trains have not been sufficiently investigated, resulting in a limitation of the design optimization formulations that can reduce the vibration and noise levels in the power-trains; (2) the electro-mechanical interactions in an EMPT are not fully understood, especially the reflection of the vibration signature onto the stator current of electric machines. Therefore, the stator current has so far not been effectively utilized to analyze the dynamics and monitor the health of the EMPTs; and (3) modeling of the EMPTs is challenging and time consuming due to a large variation in the modeling strategies with respect to an EMPT's configuration and the intended research application. In other words, there is a lack of a modeling strategy that could be applicable to various types of the EMPTs and be implemented with relative ease. Subscript: pi represents the planet where i=1 to 4 s, a, and c represents the sun gear, annulus gear, and carrier

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Bond graph toolbox for handling complex variable

Cited by 7 publications

References 5 publications

Structural analysis for dynamic model of time‐varying switch in bond graph – a case study of single phase switch converters

Structural analysis for dynamic model of time‐varying switch in bond graph – a case study of single phase switch converters

Study on the influence of backlash phenomenon on wind turbine power using bond graph approach

Modeling and dynamics analysis of electro-mechanical power-trains

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