Induction Motors Under Voltage Unbalance Combined with Voltage Subharmonics
In power systems, various power quality disturbances are present, including voltage deviation, voltage unbalance, and voltage waveform distortions. Voltage waveform distortions are usually identified with harmonics, but in some systems, subharmonics (subsynchronous interharmonics) and interharmonics...
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| Language: | English |
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MDPI AG
2024-12-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/17/24/6324 |
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| _version_ | 1846104853680488448 |
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| author | Piotr Gnaciński Marcin Pepliński Adam Muc Damian Hallmann |
| author_facet | Piotr Gnaciński Marcin Pepliński Adam Muc Damian Hallmann |
| author_sort | Piotr Gnaciński |
| collection | DOAJ |
| description | In power systems, various power quality disturbances are present, including voltage deviation, voltage unbalance, and voltage waveform distortions. Voltage waveform distortions are usually identified with harmonics, but in some systems, subharmonics (subsynchronous interharmonics) and interharmonics may also occur—that is, components of frequency less than the fundamental frequency, or not an integer multiple of it. This study examines torque pulsations of an induction motor under voltage subharmonics combined with voltage unbalance. The motor and the driven DC generator vibrations were analysed under the power quality disturbances. Investigations were carried out using finite element and empirical methods. Experimental tests were performed for the maximal levels of the power quality disturbances specified or proposed in the relevant standards. For the investigated motor, under voltage subharmonics or voltage unbalance occurring as a single power quality disturbance, the vibration level was within the prescribed limit. However, under unbalance combined with subharmonics, the level could be accepted for only a limited time. Consequently, the permissible level of voltage subharmonics in non-generation installations should be interconnected with the voltage unbalance in the power system. |
| format | Article |
| id | doaj-art-6ca5780f96a34f7e84981e165d62db69 |
| institution | Kabale University |
| issn | 1996-1073 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj-art-6ca5780f96a34f7e84981e165d62db692024-12-27T14:23:28ZengMDPI AGEnergies1996-10732024-12-011724632410.3390/en17246324Induction Motors Under Voltage Unbalance Combined with Voltage SubharmonicsPiotr Gnaciński0Marcin Pepliński1Adam Muc2Damian Hallmann3Department of Ship Electrical Power Engineering, Faculty of Marine Electrical Engineering, Gdynia Maritime University, Morska St. 83, 81-225 Gdynia, PolandDepartment of Ship Electrical Power Engineering, Faculty of Marine Electrical Engineering, Gdynia Maritime University, Morska St. 83, 81-225 Gdynia, PolandDepartment of Ship Automation, Faculty of Marine Electrical Engineering Gdynia Maritime University, Morska St. 83, 81-225 Gdynia, PolandDepartment of Ship Electrical Power Engineering, Faculty of Marine Electrical Engineering, Gdynia Maritime University, Morska St. 83, 81-225 Gdynia, PolandIn power systems, various power quality disturbances are present, including voltage deviation, voltage unbalance, and voltage waveform distortions. Voltage waveform distortions are usually identified with harmonics, but in some systems, subharmonics (subsynchronous interharmonics) and interharmonics may also occur—that is, components of frequency less than the fundamental frequency, or not an integer multiple of it. This study examines torque pulsations of an induction motor under voltage subharmonics combined with voltage unbalance. The motor and the driven DC generator vibrations were analysed under the power quality disturbances. Investigations were carried out using finite element and empirical methods. Experimental tests were performed for the maximal levels of the power quality disturbances specified or proposed in the relevant standards. For the investigated motor, under voltage subharmonics or voltage unbalance occurring as a single power quality disturbance, the vibration level was within the prescribed limit. However, under unbalance combined with subharmonics, the level could be accepted for only a limited time. Consequently, the permissible level of voltage subharmonics in non-generation installations should be interconnected with the voltage unbalance in the power system.https://www.mdpi.com/1996-1073/17/24/6324harmonicsinduction motorsinterharmonicspower qualitysubharmonicsvibration |
| spellingShingle | Piotr Gnaciński Marcin Pepliński Adam Muc Damian Hallmann Induction Motors Under Voltage Unbalance Combined with Voltage Subharmonics Energies harmonics induction motors interharmonics power quality subharmonics vibration |
| title | Induction Motors Under Voltage Unbalance Combined with Voltage Subharmonics |
| title_full | Induction Motors Under Voltage Unbalance Combined with Voltage Subharmonics |
| title_fullStr | Induction Motors Under Voltage Unbalance Combined with Voltage Subharmonics |
| title_full_unstemmed | Induction Motors Under Voltage Unbalance Combined with Voltage Subharmonics |
| title_short | Induction Motors Under Voltage Unbalance Combined with Voltage Subharmonics |
| title_sort | induction motors under voltage unbalance combined with voltage subharmonics |
| topic | harmonics induction motors interharmonics power quality subharmonics vibration |
| url | https://www.mdpi.com/1996-1073/17/24/6324 |
| work_keys_str_mv | AT piotrgnacinski inductionmotorsundervoltageunbalancecombinedwithvoltagesubharmonics AT marcinpeplinski inductionmotorsundervoltageunbalancecombinedwithvoltagesubharmonics AT adammuc inductionmotorsundervoltageunbalancecombinedwithvoltagesubharmonics AT damianhallmann inductionmotorsundervoltageunbalancecombinedwithvoltagesubharmonics |