Line-Start Permanent Magnet Synchronous Motor Supplied with Voltage Containing Negative-Sequence Subharmonics

Piotr Gnaciński, Marcin Pepliński (), Adam Muc and Damian Hallmann
Additional contact information
Piotr Gnaciński: Department of Ship Electrical Power Engineering, Gdynia Maritime University, 83 Morska St., 81-225 Gdynia, Poland
Marcin Pepliński: Department of Ship Electrical Power Engineering, Gdynia Maritime University, 83 Morska St., 81-225 Gdynia, Poland
Adam Muc: Department of Ship Automation, Gdynia Maritime University, 83 Morska St., 81-225 Gdynia, Poland
Damian Hallmann: Department of Ship Electrical Power Engineering, Gdynia Maritime University, 83 Morska St., 81-225 Gdynia, Poland

Energies, 2023, vol. 17, issue 1, 1-13

Abstract: In some power systems, the voltage waveform contains frequency components less than fundamental, called subharmonics or subsynchronous interharmonics. Voltage subharmonics can be both positive- and negative-sequence, independent of their frequency (order). Subharmonics exert harmful effects on sundry electrical equipment, especially on rotating machinery; they cause various noxious phenomena, such as a local saturation of the magnetic circuit, increases in power losses and windings temperature, and torque pulsations leading to vibration of unacceptable severity. Notably, previous works reported excessive vibration of rotating machinery only under no-load, while under full load, rather moderate vibration occurred. This study deals with vibration analysis of a line-start permanent magnet synchronous motor (LSPMSM) supplied with the voltage containing negative-sentence subharmonics. Experimental investigations were conducted for a 3 kW, four-pole production LSPMSM for subharmonics of various values and frequencies. Voltage subharmonics of values significantly less than reported in real power systems were found to cause unacceptable vibration, especially under full load.

Keywords: AC motors; interharmonics; permanent magnet motors; power quality; subharmonics; synchronous motors; vibration; voltage distortions (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/17/1/91/pdf (application/pdf)
https://www.mdpi.com/1996-1073/17/1/91/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:17:y:2023:i:1:p:91-:d:1306062

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().