An Accurate and Fast Method for Conducted EMI Modeling and Simulation of MMC-Based HVdc Converter Station

Zhu, Ruimin; Lin, Ning; Dinavahi, Venkata; Liang, Guishu

doi:10.1109/tpel.2019.2945931

Cited by 52 publications

(11 citation statements)

References 33 publications

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“…For EMC analysis, these functional models must be augmented by including additional circuit elements to represent the parasitic coupling phenomena occurring at high frequencies inside the converter [11][12] . Despite circuit modeling offering undoubted advantages such as the possibility of simulating different operating conditions of the converter both in time and frequency [13][14][15] , this approach becomes unfeasible for system-level analyses involving complex power converters. This is owing to the inherent difficulties in accurately estimating the values of the circuit parameters representative of parasitic phenomena, whose contribution is dominant at high frequencies [16][17] .…”

Section: Overview Of Available Modeling Techniquesmentioning

confidence: 99%

Black-box Modeling of Converters in Renewable Energy Systems for EMC Assessment: Overview and Discussion of Available Models

Beshir

Liu

et al. 2022

Chin. J. Electr. Eng.

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The development of renewable energy systems interfaced with the grid by power electronic converters leads to increasing issues of electromagnetic coexistence between power and communication lines, as well as severe power quality issues, such as total harmonic distortion at the consumer side. Therefore, high-frequency modeling of renewable energy systems is of great importance to guide the design and development of distribution networks involving renewable sources. Owing to system complexity, black-box modeling approaches offer more advantages than traditional circuit modeling, as far as electromagnetic compatibility (EMC) analysis and filter design are the targets. In this study, different black-box modeling techniques for power converters are introduced and systematically analyzed. First, the general theory of black-box modeling is explained. Subsequently, three different modeling approaches are compared in terms of accuracy and the required experimental setup. Finally, the possible limitations of black-box modeling of power converters are investigated and discussed.

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Section: Overview Of Available Modeling Techniquesmentioning

confidence: 99%

Black-box Modeling of Converters in Renewable Energy Systems for EMC Assessment: Overview and Discussion of Available Models

Beshir

Liu

et al. 2022

Chin. J. Electr. Eng.

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“…Detailed modeling techniques employ a device-based approach. Models of circuit components are obtained with physics-based modeling and all the parasitic components are considered [29]- [36]. Detailed modeling technique is the most versatile solution to EMI analysis.…”

Section: ) Detailed Modelingmentioning

confidence: 99%

Modeling of Conducted Emissions for EMI Analysis of Power Converters: State-of-the-Art Review

2020

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Electromagnetic interference issues are associated with high-speed switching of power converters. EMI modeling is an essential tool to study and control the EMI emission, enabling more efficient solutions. A comprehensive review and comparison of different modeling approaches for conducted emissions are provided in this paper, which can be used as a design guideline for engineers. For a motor drive application, common mode and differential mode conducted emissions are studied, and dominant noise production mechanisms are identified. Moreover, a review of various modeling techniques is presented for the main parasitic components of the system. Finally, time domain and frequency domain analysis approaches are explored along with the equivalent circuits which enable fast prediction of EMI emissions. This paper intends to help the reader develop an organized understanding of conducted emission modeling to assist them with a more efficient and electromagnetically-compatible design. INDEX TERMS Circuit modeling, common mode, conducted emission, differential mode, electromagnetic interference (EMI), motor drive inverters.

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“…Since its introduction in 2003 by Marquardt and Lesnicar [1], the modular multilevel converter (MMC) has been considered as a promising candidate for medium-to-high voltage conversion applications such as high-voltage direct current (HVDC) transmission systems [2][3][4], flexible alternating current transmission system (FACTS) [5], medium-voltage motor drives [6], wind energy conversion systems [7], and large-scale photovoltaic generation systems [8]. This wide range of applications is due in large part to some of the salient features associated with this converter such as its modular design and scalability to different power and voltage levels, low switching frequency, simple capacitor voltage balancing control, and simple realization of redundancy [9].…”

Section: Introductionmentioning

confidence: 99%

Lifetime and reliability improvements in modular multilevel converters using controlled circulating current

et al. 2021

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Circulating current has been an inherent feature of modular multilevel converters (MMC), which results in second-order harmonics on the arms currents. If not properly controlled, the circulating current can affect the lifetime and reliability of a converter by increasing the current loading, loss distribution, and junction temperature of its semiconductor devices. This paper proposes controlled circulating current injection as a means of improving the lifetime and reliability of an MMC. The proposed method involves modifying the reference modulating signals of the converter arms to include the controlled differential voltage as an offset. The junction temperature of the semiconductor devices obtained from an electro-thermal simulation is processed to deduce the lifetime and reliability of the converter. The obtained results are benchmarked against a case where the control method is not incorporated. The incorporation of the proposed control method results in a 68.25% increase in the expected lifetime of the converter and a 3.06% increase on its reliability index. Experimental results of a scaled down laboratory prototype validate the effectiveness of the proposed control approach.

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An Accurate and Fast Method for Conducted EMI Modeling and Simulation of MMC-Based HVdc Converter Station

Cited by 52 publications

References 33 publications

Black-box Modeling of Converters in Renewable Energy Systems for EMC Assessment: Overview and Discussion of Available Models

Black-box Modeling of Converters in Renewable Energy Systems for EMC Assessment: Overview and Discussion of Available Models

Modeling of Conducted Emissions for EMI Analysis of Power Converters: State-of-the-Art Review

Lifetime and reliability improvements in modular multilevel converters using controlled circulating current

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