Reliability of Boost PFC Converters with Improved EMI Filters

Zhu, Haoqi; Liu, Dongliang; Zhang, Xu; Qu, Feng

doi:10.3390/electronics7120413

Cited by 9 publications

(10 citation statements)

References 19 publications

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“…In [41], the utilization of an online selective harmonic elimination (SHE) method and particle swarm optimization to reduce harmonics is addressed, while in [42], a comprehensive review on control strategies for mitigating the dead-time effect on power converters to improve the total harmonic distortion of output waveforms is presented. With respect to EMI, modeling and proper EMI filter design in order to comply with international standards, which is of high importance, is addressed in [43,44]. Furthermore, applying active spectral shaping can maintain the generated EMI noise while reducing the size of an EMI filter in an effective method presented in [45].…”

Section: Distributed Power Generation and E-grid (T4)mentioning

confidence: 99%

Applications of Power Electronics

Blaabjerg

Dragičević

2019

Electronics

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Section: Distributed Power Generation and E-grid (T4)mentioning

confidence: 99%

Applications of Power Electronics

Blaabjerg

Dragičević

2019

Electronics

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“…The CE causes significant electrical damages and communication malfunctions in many systems [17][18][19][20][21][22][23][24]. To reduce the CE, there are several methods [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] with different signal attenuation patterns. Each electrical system has different CE characteristics, so the CE attenuation method must be appropriately chosen for each system.…”

Section: Literature Reviewmentioning

confidence: 99%

“…The CE attenuation result respect the standard limit, and EMI filters weight/volume were halved from the commercial filter. In Zhu's research [29], the CE of the boost power factor correction converter was reduced by passive EMI filter compared with the EN55014-1 standard. CM and DM were analyzed and discussed in detail to design the EMI filter.…”

Section: Literature Reviewmentioning

confidence: 99%

The Conducted Emission Attenuation of Micro-Inverters for Nanogrid Systems

Jettanasen

Ngaopitakkul

2019

Sustainability

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Road lighting systems require a significant amount of electric energy. To compensate for the utilized energy, the concept of a nanogrid road lighting system is presented. A solar panel is installed on the top of a lighting pole to generate electric power. In this research, a photovoltaic simulator (PV simulator), which is used to simulate solar behavior such as current, voltage, and power based on temperature and solar irradiance levels, is employed to replace a solar panel. In the nanogrid system, grid-connected and stand-alone micro-inverters are employed to convert the electric power. The inverters comprise switching devices that can generate electromagnetic interference (EMI) when operating, which is harmful to the grid system and the electrical equipment. In general, EMI has been studied and reduced in electrical appliances, which only receive electric power. However, for the nanogrid system, which supplies electricity to the grid system, there is less study on the EMI topic because the usage is still not widespread. In the future, the nanogrid system will be widely used delivering high power directly into the electrical grid system. Therefore, the study and attenuation of EMI in the nanogrid system are very promising. Conducted emission (CE) is one form of EMI that flows through a cable connecting several appliances in the frequency range of 150 kHz to 30 MHz. CE of grid-connected and stand-alone micro-inverters have high levels in the low-frequency range between 150 kHz–5 MHz and then decreases steadily. CE attenuation is important for this inverter in a solar power system. This research studies the effect of CE mitigation on the nanogrid system. The result is compared with the Comité International Spécial des Perturbations Radio (CISPR) 14-1 standard. Finally, the passive EMI filter can reduce CE and meets the CISPR 14-1 standard.

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“…In particular, the most common EMI sources that interfere in the conducted range are switch-mode power converters [7]. Both embedded DC-DC converters are intended for a large number of commonly used electronic devices [8] and high-low voltage DC-DC converters employed to charge Electric Vehicle batteries [9] contribute to the generation of EMI in this frequency band. In order to avoid, or at least reduce EMI, suppressors should work as low-pass filters, suppressing signals with frequencies higher than the intended signal frequency value [1].…”

Section: Introductionmentioning

confidence: 99%

Effectiveness Assessment of a Nanocrystalline Sleeve Ferrite Core Compared with Ceramic Cores for Reducing Conducted EMI

et al. 2019

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The interconnection of different electronic devices or systems through cables is becoming more difficult due to the hard restrictions related to electromagnetic compatibility (EMC) in order to comply with requirements. Therefore, the use of EMC components is a good solution to manage the problems associated with the filtering of electromagnetic interference (EMI) in cables and to pass the compliance test. In this sense, sleeve ferrite cores become a very interesting solution since they can be set around a wire and, hence, they provide an effective solution against EMI without having to redesign the electronic circuit. This contribution is focused on the characterization of the performance of a sleeve ferrite core based on a novel nanocrystalline (NC) novel material for EMI suppression and comparing it to the most conventional ceramic ferrite cores such as MnZn and NiZn. The research highlights the suitability of an NC novel component in terms of its magnetic properties to reduce EMI within the conducted emissions range. This range is generally defined by the International Special Committee on Radio Interference (CISPR) test standards frequency band that covers from 150 kHz up to 30 MHz (108 MHz in the case of CISPR 25). First, this study presents a description of the main parameters that define the behavior of NC and ceramic cores and, secondly, by analyzing the data obtained from experimental procedures, it is possible to directly determine the insertion loss parameter. Hence, this characterization procedure is used to obtain the performance of NC material compared to the conventional sleeve ferrite core compositions employed to filter the interferences in this problematic frequency range. As can be deduced from the results obtained, an NC sleeve ferrite core provides the best performance in terms of EMI filtering within a significant frequency range between 100 kHz and 100 MHz.Electronics 2019, 8, 800 2 of 21 circuit. The most common sources of these interferences include natural ones (such as atmospheric electrical phenomena), power lines, auto ignition or radio frequency (RF) interference.In terms of the kind of disturbance that is transmitted, EMI is divided into two categories: conducted and radiated emissions; regarding the way the electromagnetic field is propagated. In the case of radiated EMI, it is caused by induction whereas conducted EMI is generated by physical contact of conductors. Thus, in the low frequency range EMI is generally emitted via conduction and, in the high frequency region via radiation. Likewise, conducted EMI can be classified into two kind of currents in terms of different directions of leading: differential mode (DM) and common mode (CM) [3]. In the correct working of a circuit, a differential current is designed to flow in order to obtain a clear signal. When opposing currents are created and flow in the same direction as the intended current, the differential intended currents are canceled. In CM, currents flow in both conductors in the same direction and are not suppressed as ...

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Reliability of Boost PFC Converters with Improved EMI Filters

Cited by 9 publications

References 19 publications

Applications of Power Electronics

Applications of Power Electronics

The Conducted Emission Attenuation of Micro-Inverters for Nanogrid Systems

Effectiveness Assessment of a Nanocrystalline Sleeve Ferrite Core Compared with Ceramic Cores for Reducing Conducted EMI

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