Design optimization of passive DC filters for aerospace applications

Griffo, Antonio; Wang, Jiabin

doi:10.1049/cp.2010.0127

Cited by 5 publications

(7 citation statements)

References 6 publications

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“…Selection of switching frequency for the aerospace power converter system is usually assumed with some kind of experience, for example 2.5kHz, 10kHz, or 20kHz [10] - [12]. Griffo in [11] proposed a procedure for the design and optimization of passive DC filters by aiming at the minimization of the total filter weight with guaranteed stability margins and power quality performances for aerospace applications by assuming the switching frequency as 10kHz.…”

Section: Background Of the Studymentioning

confidence: 99%

Optimal switching frequency for aerospace power converter systems

Thavaratnam¹

2021

Preprint

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Switching frequency is one of the main deciding factors in development of a power converter system for aerospace applications. The filter is one of the major components that significantly contribute to the overall system weight and efficiency. The design of the filter, including inductor and capacitor is determined by the switching frequency. On the other hand, the device switching loss is proportional to the loss, which in turn changes the design of thermal system. Thus selection of optimal switching frequency is essential for power converter systems used in aerospace industry. The objective of this study is to select the optimal switching frequency when the overall converter weight is minimal. In this study, switching frequencies ranging from 9kHz to 20kHz is selected based on current IGBT technology. Proven design algorithm for passive filter is adopted in the optimization. Partial verification for power efficiency is conducted via simulation and experiment results.

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Section: Background Of the Studymentioning

confidence: 99%

Optimal switching frequency for aerospace power converter systems

Thavaratnam¹

2021

Preprint

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“…Unlike inductors, capacitors are not usually custom designed, and therefore their volume usually should be approximated, if not extracted directly from a catalog, which is the case in [29,33,46,56,57]. Other approaches include calculating capacitance volume from its stored energy [27,122,123], or from an empirical formula based on its capacitance obtained from a curve fit, or given by the manufacturer [23,24,36,38,48,[117][118][119][120]124].…”

Section: Capacitorsmentioning

confidence: 99%

“…A summary of cost modelling methods is presented in Table 12. [27,122,123] from stored energy [23,36,48,62,63,[117][118][119][120]124] empirical equation based on capacitance [115,116] from geometry for an integrated LC module [42,43] from geometry for a planar integrated passive module [54] from geometry for a film capacitor [46] estimated from thermal resistance [23,27,33,36,62,63,125] a CSPI introduced for each heat sink, optimisation looks for higher CSPI [29,107,108,126] from price of off-the-shelf components [127][128][129] cost of passive components is approximated from value [65,66,82] cost of stranded wire estimated from strand diameter and number [39] cost of a semiconductor chip is estimated from surface area Given the difficulties of estimating economic value of a certain component or converter, all of the cost modelling approaches are only low-order approximations. Cost modelling approaches in Table 12 are application-specific and cannot be compared with each other directly.…”

Section: Cost Modellingmentioning

confidence: 99%

“…Inductors and transformers are usually custom designed, and therefore their size (weight or volume) can be calculated from their geometry, which is a part of design variable set. This approach is taken in [23–27, 33, 36, 38, 39, 42, 43, 54, 56, 57, 60, 114–121]. In another paper, volume of the inductor is calculated from the area product of the inductor core which can be considered indirect calculation from geometry [39].…”

Section: Size Modellingmentioning

confidence: 99%

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Survey of modelling techniques used in optimisation of power electronic components

Mirjafari¹,

Balog²

2014

IET Power Electronics

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Design optimisation techniques for power electronic converters have been the subject of numerous research studies for the past 15 years. Accurate modelling is the most important task in the optimisation, and, because the nature of optimisation problem demands evaluating an objective function numerous times, fast and simplified modelling techniques are required. The objective of this study is to categorise and analyse the previous studies related to modelling techniques incorporated in design optimisation of power electronic converters. Common trends in modelling and optimisation of power electronic converters are analysed and suggestions for future research in this field will be presented.

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“…A continuous optimization procedure has already been applied to EMI filter design for power electronics [10], [11], for aerospace applications [12], [13] and for signal processing [14]. However, this type of optimization can be improved.…”

Section: Introductionmentioning

confidence: 99%

Power Efficiency and EMI Attenuation Optimization in Filter Design

Ferber

Mrad

Morel

et al. 2018

IEEE Trans. Electromagn. Compat.

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This paper presents a discrete conducted electromagnetic interference filter optimization procedure, based on a Genetic Algorithms. A macro-modeling technique taking into account the load impedance, the source emissions and the filter parasitic components, including the filter layout, is used to obtain an accurate solution for the optimization process. The latter searches among supplier passive component databases and provides, for a given filter topology, an optimal set of components available on the market. This approach has been applied to a differential Class-D audio amplifier for validation. By considering the EMI, the additional power losses introduced by the filter and the audio gain, two different optimization formulations have been tested. The first corresponds to maximizing the power efficiency of the system while respecting a determined level of electromagnetic emissions. The second corresponds to minimizing the EMI without exceeding a determined level of power loss. The optimized filters are built and measurements are carried out. The results show a remarkable power efficiency improvement and a significant EM emission reduction when compared to a reference filter.

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Design optimization of passive DC filters for aerospace applications

Cited by 5 publications

References 6 publications

Optimal switching frequency for aerospace power converter systems

Optimal switching frequency for aerospace power converter systems

Survey of modelling techniques used in optimisation of power electronic components

Power Efficiency and EMI Attenuation Optimization in Filter Design

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