Mathematical Modeling of Electric Drive System Operation Modes Based on Asynchronous Rectifier Cascade with Consistent Motor Excitation

Исаев, А. В.; Nefed’ev, A. I.; Isaeva, L.A.

doi:10.1109/icieam48468.2020.9111976

Cited by 1 publication

(1 citation statement)

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“…The characteristics of control patterns of the inverter switches are taken into account. The developed model is the key for the analysis and prediction of the potential emergency cases occurrences in the electric part of the drive and the loss of control of the inverter switches [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Time response enhancement for variable speed drive systems by using five-level cascade four quadrant chopper in dc-link

Nadweh

Khaddam

Hayek

et al. 2020

Heliyon

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This research introduces a filtering circuit design integrated with the DC-link of a medium power variable speed drive (VSD) system. The designed filtering circuit employs modern power electronic circuits to improve time response characteristics in both grid and dc-link sides. Depending on the widely used multi-level converters, a conventional three-level H-bridge four-quadrant chopper scheme was developed into a cascade five-level H-bridge four-quadrant chopper scheme. The time response of the proposed system was performed with both choppers, and results showed that voltage drop on cascade chopper transistors was reduced to half in comparison with voltage drop on conventional four-quadrant chopper transistors. Moreover, the sharp fluctuations in system's waves were mitigated; consequently, time response characteristics in both steady and transient states were remarkably improved. The total harmonic distortion factor THD% of the input current and voltage was reduced to 26.2% and 2.43% respectively and the ripple factor RF for DC-link current was reduced to 0.196.

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Section: Introductionmentioning

confidence: 99%