Impact of harmonic distortion on the supraharmonic emission of pulsewidth modulated single-phase power electronic devices

Kaufhold, Elias; Meyer, Jörg; Schegner, Peter

doi:10.24084/repqj19.352

Cited by 3 publications

(2 citation statements)

References 20 publications

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“…With regard to the frequency range, subharmonics and supraharmonics, e.g. [12], have also been studied though shutdowns related to supraharmonics are not known to the authors as of yet.…”

Section: ) Invertermentioning

confidence: 99%

Framework to assess the stable operation of commercially available single-phase inverters for photovoltaic applications in public low voltage networks

Kaufhold¹,

Meyer²,

Myrzik³

et al. 2023

RE&PQJ

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This paper presents a framework to assess the grid compatibility of single-phase inverters connected to public low voltage network, which is characterized by a stable operation at reasonable emission. The assessment is based on considering emission, immunity and stability. The state of the art for commercially available devices relies only on the classical, impedance-based stability analysis based on the Nyquist criterion. However, experiences have shown that this is not sufficient for a statement towards the stable operation of an inverter, since the stable operation can also be affected by other factors than the network impedance, e.g. a background voltage distortion. Exemplary laboratory measurements of two commercially available single-phase PV inverters are presented to validate the statement by showing that despite the impedance-based stability criterion is met, inverters can still trip in presence of a high background voltage distortion. The paper concludes that the immunity of the inverter with regard to the voltage distortion at the point of connection (PoC) is additionally of importance for its stable operation.

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“…With regard to the frequency range, subharmonics and supraharmonics, e.g. [12], have also been studied though shutdowns related to supraharmonics are not known to the authors as of yet.…”

Section: ) Invertermentioning

confidence: 99%

Framework to assess the stable operation of commercially available single-phase inverters for photovoltaic applications in public low voltage networks

Kaufhold¹,

Meyer²,

Myrzik³

et al. 2023

RE&PQJ

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“…The supply current harmonics are mostly due to the nonlinearity of connected load, as experienced in AC/DC converters and controls of industrial and domestic appliances. Cell phone chargers, laptop chargers and all DC loads which require rectifier circuits and power semiconductor switches are the primary sources of harmonic currents in the power system [16,17]. Due to the fact that DC supply is not readily available, various international bodies have proposed standards for minimum harmonic production of various manufactured electric and electronic products.…”

Section: Review Of Selected Literaturementioning

confidence: 99%

Fuzzy-Logic-Controlled Hybrid Active Filter for Matrix Converter Input Current Harmonics

Koduah

Effah

2022

Energies

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The proliferation of matrix converter interfaces coupled with traditional loads produces nonstandard and high-frequency harmonics in the range of (2 to 150) kHz in the power system. Although several research works have been conducted on passive and active filter solutions, most of these are low-frequency (below 2 kHz) solutions and are not effective under supraharmonic frequencies. An experimental study of a fuzzy-inference-system-controlled hybrid active power filter (HAPF) for the attenuation of higher frequency harmonics (above 8 kHz) is proposed. The compensational approach introduced is different from traditional approaches and the use of the fuzzy logic controller eliminates complexities involved in active filter designs. The proposed filter obtained a total harmonic distortion (THD) of 1.16% of the fundamental 50 Hz supply frequency. The performance of the proposed hybrid filter was compared with that of the proportional and integral (PI) controlled topology. The results obtained indicated superior performance of the fuzzy logic controller over the PI in terms of compensational speed, accuracy, the THD of the supply current and the overall integrity of the matrix converter. Illustrative design blocks and simulation in MATLAB/Simulink environment are provided to buttress these findings.

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Supraharmonic Pollution Emitted by Nonlinear Loads in Power Networks—Ongoing Worldwide Research and Upcoming Challenges

2022

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Researchers at many different institutions around the world study voltage and current waveform distortions in power networks using a variety of techniques. Due to the uncontrolled growing number of nonlinear devices supplied by electrical energy, more severe supraharmonic pollution has been observed. A bibliometric analysis of the topic development between 2013 and 2022 is presented in the paper. Using the selected search tools, a comparative review of articles published in the last three years was conducted. It organizes the existing knowledge about supraharmonic pollution generated by nonlinear devices and identifies current research challenges associated with the spread of these disturbances in electrical networks. The most frequently discussed topics by researchers are those that deal with the level of emissions generated by supraharmonic sources and their effects on components of the power system. The second most prominent research direction is the detection, measurement, analysis, and severity evaluation of supraharmonic pollution. Finally, the authors discuss areas of study related to the topic that offers perspectives for future research. The impact of high-frequency component pollution generated by nonlinear loads on emissions intentionally designed to carry communications signals through electrical networks needs to be explored under various power supply conditions.

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Impact of harmonic distortion on the supraharmonic emission of pulsewidth modulated single-phase power electronic devices

Cited by 3 publications

References 20 publications

Framework to assess the stable operation of commercially available single-phase inverters for photovoltaic applications in public low voltage networks

Framework to assess the stable operation of commercially available single-phase inverters for photovoltaic applications in public low voltage networks

Fuzzy-Logic-Controlled Hybrid Active Filter for Matrix Converter Input Current Harmonics

Supraharmonic Pollution Emitted by Nonlinear Loads in Power Networks—Ongoing Worldwide Research and Upcoming Challenges

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