Novel frequency measurement method with low sampling time

Mostarac, Petar; Hegeduš, Hrvoje; Malarić, Roman

doi:10.1109/cpem.2010.5544520

Cited by 4 publications

(3 citation statements)

References 13 publications

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“…There are a few solutions for determining instantaneous frequency of a power signal. Among the most popular are the interpolated DFT, sine fitting, Hilbert transform (Mostarac et al, 2010), and zoom-DFT. In the case of zoom-DFT, the chirp z-transform is often used for decreasing the time of computation (Huang et al, 2007;Mostarac et al, 2010).…”

Section: Modulation Of Instantaneous Frequency Voltage Fundamental Components and Chosen Harmonics Research Methodologymentioning

confidence: 99%

“…Among the most popular are the interpolated DFT, sine fitting, Hilbert transform (Mostarac et al, 2010), and zoom-DFT. In the case of zoom-DFT, the chirp z-transform is often used for decreasing the time of computation (Huang et al, 2007;Mostarac et al, 2010). Moreover, the comparative study on the application of the zoom-DFT and the Hilbert-Huang transform (HHT) for instantaneous frequency identification in maritime microgrids revealed that the obtained results were fully comparable and the conclusions resulting from both studies were the same (Tarasiuk et al, 2020).…”

Section: Modulation Of Instantaneous Frequency Voltage Fundamental Components and Chosen Harmonics Research Methodologymentioning

confidence: 99%

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Comparative Case Study on Oscillatory Behavior in Power Systems of Marine Vessels With High Power Converters

Tarasiuk¹,

Jankowski²,

Shagar³

et al. 2021

Front. Energy Res.

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The chief aim of the proposed paper is to compare the behavior of supply voltage registered onboard three vessels equipped with high power converters during normal operation. The vessels considered are a chemical tanker with shaft generator working via power converter, a research-training ship with bow thruster, and a research vessel with dynamic positioning (DP) and electrical propulsion. In the case of the two latter ships, power electronic loads are present, which include a bow thruster adjustable speed drive equipped with the six pulse uncontrolled rectifier and the adjustable speed drive with an active front end (AFE) for propulsion system. For each ship, instantaneous frequency is determined and subsequently fluctuations of fundamental components and chosen harmonics are calculated using zoom-DFT. The characteristics of these irregular fluctuations are compared and commented on. Next, phase portraits and Poincare map of the registered voltages are calculated and compared. Moreover, the impact of ship rolling and pitching on the oscillatory behavior is assessed for the DP ship. The final conclusions identify reasons for oscillatory behavior in electric power systems of marine vessels containing high power converters on the source side and load side. The feasibility of using voltage trajectories as well as Poincare maps for oscillatory behavior detection is assessed.

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Section: Modulation Of Instantaneous Frequency Voltage Fundamental Components and Chosen Harmonics Research Methodologymentioning

confidence: 99%

Section: Modulation Of Instantaneous Frequency Voltage Fundamental Components and Chosen Harmonics Research Methodologymentioning

confidence: 99%

Comparative Case Study on Oscillatory Behavior in Power Systems of Marine Vessels With High Power Converters

Tarasiuk¹,

Jankowski²,

Shagar³

et al. 2021

Front. Energy Res.

View full text Add to dashboard Cite

show abstract

“…For measurement of sampled signal phase and frequency both methods use built in functions like Extract single tone information that analyzes whole sampled signal to achieve the best result. Signal phase and frequency can be also measured with other algorithms [6,7]. This step is very important because accuracy of both methods depends on the accuracy of the signal phase and frequency measurement.…”

Section: A Realization Of Methods In Ni Labviewmentioning

confidence: 99%