A conducted EMI model for an industrial power supply full bridge

Brehaut, S.; Bunetel, J.C. Le; Magnon, D.; Puzo, A.

doi:10.1109/pesc.2004.1355351

Cited by 9 publications

(6 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Without the noise source impedances, the important EMI noise characteristics will be missing. Some of the previous researches also showed that the inaccurate modeling of device module parasitics would result in prediction errors in high frequency range ( 5 MHz) [13]. Note also that in Figs.…”

Section: Discussionmentioning

confidence: 83%

Modular-Terminal-Behavioral (MTB) Model for Characterizing Switching Module Conducted EMI Generation in Converter Systems

Liu

Wang

Boroyevich

2006

IEEE Trans. Power Electron.

View full text Add to dashboard Cite

This paper proposes a new frequency-domain modular-terminal-behavioral (MTB) modeling approach for characterizing conducted electromagnetic interference (EMI) noise sources in a converter. It models the EMI emission of a switching device module under specific switching conditions using a three-terminal equivalent Norton network, which can be extracted from a standard test. Experiments show that the MTB model can be used to accurately predict the EMI noise in a converter for the entire conducted EMI frequency range. It is more general and more accurate than the existing behavioral models, especially in the high frequency range, and it is more convenient than the physics-based model. The study also verifies the importance of EMI source impedance modeling and interactions between common mode and differential mode noises.Index Terms-Common mode (CM), differential mode (DM), electromagnetic inference (EMI), modular-terminal-behavioral (MTB) modeling.

show abstract

Section: Discussionmentioning

confidence: 83%

Modular-Terminal-Behavioral (MTB) Model for Characterizing Switching Module Conducted EMI Generation in Converter Systems

Liu

Wang

Boroyevich

2006

IEEE Trans. Power Electron.

View full text Add to dashboard Cite

show abstract

“…With this in mind many efforts have been made to model and characterize (EMI) noise emissions of a particular device or system in power electronics [1,. However, there is still no definitive way for a unified approach of The modeling of EMI can generally be broken down into two categories: detailed, physics based modeling [21][22][23][24][25][26][27][28][29][30] and behavioral modeling [31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49]. Either method can be used to model the EMI propagation path or the noise source.…”

Section: Literature Reviewmentioning

confidence: 99%

“…When the noise impedance is the focus of a particular work an idealized noise source is used [39,[45][46][47][48]. This is usually of the form of a pulsed voltage source that mimics the switched voltage across a switch.…”

Section: Behavioral (Terminal) Modeling Approachmentioning

confidence: 99%

“…Most models only partially characterize the impedance: [41] only included first order stray inductances and the junction capacitor, [42] used a unique approach with some success, however, limits are placed on the magnitude/form of the unknown impedance and the overall power rating of the converter, [44] only measured the CM impedance while the converter was not operating in order to only find the capacitive coupling to ground, so information could be lost since no other impedances are found, [47] only has a pure capacitance for the CM impedance, [48] has a simplified model for all passive components and it still requires knowledge of all parasitic components. When the model is not fully complete the accuracy is reduced as the frequency increases, typically beyond 1-10 MHz.…”

Section: Behavioral (Terminal) Modeling Approachmentioning

confidence: 99%

See 1 more Smart Citation

Generalized Terminal Modeling of Electromagnetic Interference

Baisden

Boroyevich

Wang

2010

IEEE Trans. on Ind. Applicat.

View full text Add to dashboard Cite

Terminal models have been used for various power electronic applications. In this work a two-and three-terminal black box model is proposed for electro-magnetic interference (EMI) characterization. The modeling procedure starts with a time-variant system at a particular operating condition, which can be a converter, set of converters, sub-system or collection of components. A unique, linear equivalent circuit is created for applications in the frequency domain. Impedances and current / voltage sources define the noise throughout the entire EMI frequency spectrum. All parameters needed to create the model are clearly defined to ensure convergence and maximize accuracy.The model is then used to predict the attenuation caused by a filter with increased accuracy over small signal insertion gain measurements performed with network analyzers. Knowledge of EMI filters interactions with the converter allows for advanced techniques and design constraints to optimize the filter for size, weight, and cost. Additionally, the model is also demonstrated when the operating point of the system does not remain constant, as with AC power systems.Modeling of a varying operating point requires information of all the operating conditions for a complete and accurate model. However, the data collection and processing quickly become unmanageable due to the large amounts of data needed. Therefore, simplification techniques are used to reduce the complexity of the model while maintaining accuracy throughout the frequency spectrum.The modeling approach is verified for linear and power electronic networks including: a dcdc boost converter, phase-leg module, and a simulated dc-ac inverter. The accuracy of the model is confirmed up to 100 MHz in simulation and at least 50 MHz for experimental validation.

show abstract

“…The output stage is an inverter in series with a transformer and a rectifier. The full system was supplied through a compliant LISN that was also considered in the EMI modeling [2] [3]. In Figure 1 we also show the filtering components before the optimization.…”

Section: Introductionmentioning

confidence: 99%

Design of power supply in function of EMI assessment

Bunetel

González

2007

2007 IEEE International Symposium on Industrial Electronics

View full text Add to dashboard Cite

In this paper we present how the design of a power converter can be effectively improved by means of EMI phenomena simulation. We will consider the design of a converter intended as battery charger for telecommunication facilities. First of all, the phenomena involved in the generation of electromagnetic interference are reviewed. Then the main ideas used to obtain the EMI simulation model are outlined. A model of the power converter in the frequency-domain is obtained and validated through experimental measurements. Finally, this model is used to improve the design of the converter from the EMI point of view, resulting in a reduction of space, weight and cost of the filtering devices.

show abstract

A conducted EMI model for an industrial power supply full bridge

Cited by 9 publications

References 3 publications

Modular-Terminal-Behavioral (MTB) Model for Characterizing Switching Module Conducted EMI Generation in Converter Systems

Modular-Terminal-Behavioral (MTB) Model for Characterizing Switching Module Conducted EMI Generation in Converter Systems

Generalized Terminal Modeling of Electromagnetic Interference

Design of power supply in function of EMI assessment

Contact Info

Product

Resources

About