Active Compensation of Sub and Interharmonics in Cycloconverter-Fed Grinding Mill Drives

Aravena, Pablo; Morán, L.; Dixon, J.; Joós, G.

doi:10.1109/ias.2010.5615648

Cited by 7 publications

(4 citation statements)

References 6 publications

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“…One of the sources of voltage fluctuations (generally connected with SaI) concerns fluctuating loads, especially of high power, like arc furnaces [7,9], rolling mills [10], welding machines, electric boilers and large capacitor banks for power factor improvement [11,12]. Another source of SaI is non-linear loads, for example, cycloconverters [10,13], induction melting furnaces [14] or inverters [15,16]. SaI pollution is also produced by wind power stations [17,18].…”

Section: Introductionmentioning

confidence: 99%

Induction cage machine supplied with voltage containing subharmonics and interharmonics

Gnaciński

Pepliński

2014

IET Electric Power Applications

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This study deals with the influence of voltage subharmonics and interharmonics on an induction cage machine. The windings current subharmonics and interharmonics as well as the magnetising current are studied. The effect of voltage subharmonics and interharmonics on windings temperature rise is analysed. The results of measurements and calculations are compared for various machine models. The appropriate investigations are performed for two low-power, totally enclosed induction motors of different properties: a machine with a comparatively strongly saturated magnetic circuit, and one with a comparatively weakly saturated magnetic circuit.

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Section: Introductionmentioning

confidence: 99%

Induction cage machine supplied with voltage containing subharmonics and interharmonics

Gnaciński

Pepliński

2014

IET Electric Power Applications

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“…Additionally, double-stage systems, which consist of two AC systems operating at different frequencies interconnected through a DC link [12,13], have also been identified as significant sources of interharmonics. Notable devices include IGBT-based voltage source inverters (VSIs) used in static compensators (STATCOMs) and HVDC applications [14,15], as well as cycloconverters, electric arc furnaces and power communication lines [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Interharmonics Generation in Induction Motors Driven by Variable Frequency Drives and AC Choppers

Gudiño-Ochoa,

Jalomo-Cuevas,

Molinar-Solís

et al. 2023

Energies

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In modern power systems, interharmonics have emerged as noninteger frequency components that appear in current or voltage signals. Double-stage AC-DC-AC converters have been identified as a primary source of interharmonics. Previous studies have highlighted modulation techniques, filters, passive components, unbalanced conditions and DC link effects as relevant factors. However, the interaction between these factors and the inertial properties of induction motors has not been explored. This study assesses various types of AC drives, including variable frequency drives (VFDs) and soft starters (AC choppers), to investigate their interaction with machine inertial properties in interharmonic generation. The employed technique for time-frequency spectral analysis is the wavelet synchrosqueezed transform combined with a clustering method. This paper demonstrates that the interaction of the inertial properties of low-power induction motors with the variations of the switching frequencies of the VFDs, the filters used in the DC link and a soft start indirectly contribute to harmonic generation and potentially to interharmonics in the electrical grid and the outputs of the inverter.

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“…It should be noted that interharmonics are considered to be more harmful than harmonic components because they overlap to the fundamental wave and modify not only the shape of the current, but also the voltage, which results in the following adverse effects [3][4][5]. Interference with telecommunication networks: The electromagnetic coupling between the electrical and telecommunication networks can induce in these last important noises.…”

Section: Introductionmentioning

confidence: 99%

“…But the main disadvantage of these devices, in addition to resonance they are not adapted to the variations of interharmonic spectra [8]. The new structures of network's depollution are emerged under name active filter [3,9]. The objective is then to adapt the filter in real time compared to the loads variations.…”

Section: Introductionmentioning

confidence: 99%

Elimination of interharmonic currents by a FAP using the technique of compensation global

Moussa

Belmadani

Belarbi

et al. 2020

IJPEDS

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<p>This document is a contribution to improve the quality of electrical energy in the distribution network.<br />In this article we will present a method that allows us to clean up in a very considerable way the electrical network of both harmonics and inter harmonics provoked, basically by the ultrafast switches used when controlling a PWM inverter supplying a three-phase asynchronous motor. We notice that this method can be generalized for other loads creating inter-harmonics.<br />This proposed method was simulated using the MATLAB/SIMULINK software and had given remarkable results (there is a considerable reduction in total harmonic distortion (THD) of source current from 29.52% to 0.82%)</p>

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Active Compensation of Sub and Interharmonics in Cycloconverter-Fed Grinding Mill Drives

Cited by 7 publications

References 6 publications

Induction cage machine supplied with voltage containing subharmonics and interharmonics

Induction cage machine supplied with voltage containing subharmonics and interharmonics

Analysis of Interharmonics Generation in Induction Motors Driven by Variable Frequency Drives and AC Choppers

Elimination of interharmonic currents by a FAP using the technique of compensation global

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