Variable Speed Drive DC-Bus Voltage Dip Proofing
This paper proposes a power electronic module that uses a switched capacitor for retaining the integrity of the dc-link voltage of a variable speed drive (VSD) during a 0.2 s short-term power interruption (STPI). Ride-through was achieved through switched capacitor onto the dc bus. However, this tec...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-12-01
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| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/14/24/8257 |
| _version_ | 1797505158254428160 |
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| author | Freeman Chiranga Lesedi Masisi |
| author_facet | Freeman Chiranga Lesedi Masisi |
| author_sort | Freeman Chiranga |
| collection | DOAJ |
| description | This paper proposes a power electronic module that uses a switched capacitor for retaining the integrity of the dc-link voltage of a variable speed drive (VSD) during a 0.2 s short-term power interruption (STPI). Ride-through was achieved through switched capacitor onto the dc bus. However, this technique presents a challenge of the high inrush currents during a ride through compensation. In this work both analytical and experimental investigations were conducted in order to reduce the in-rush currents and its impact on the performance of the VSD during the STPI. Inrush peak currents were reduced by approximately 90%. Experimental results showed torque pulsations of 12.8% and 14.3% at the start and end of dc-link voltage compensation, respectively. A method for sizing the switched capacitor and the inrush limiting resistors is proposed. This methodology is based on the use of readily available nameplate information of the VSD and the electric motor. The proposed module can be retrofitted to existing VSDs that are based on v/f control. |
| first_indexed | 2024-03-10T04:14:37Z |
| format | Article |
| id | doaj.art-fd067ca937cc494fb12ee7cbe7fde0b0 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T04:14:37Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-fd067ca937cc494fb12ee7cbe7fde0b02023-11-23T08:04:43ZengMDPI AGEnergies1996-10732021-12-011424825710.3390/en14248257Variable Speed Drive DC-Bus Voltage Dip ProofingFreeman Chiranga0Lesedi Masisi1School of Electrical and Information Engineering, University of the Witwatersrand, Johannesburg 2000, South AfricaSchool of Electrical and Information Engineering, University of the Witwatersrand, Johannesburg 2000, South AfricaThis paper proposes a power electronic module that uses a switched capacitor for retaining the integrity of the dc-link voltage of a variable speed drive (VSD) during a 0.2 s short-term power interruption (STPI). Ride-through was achieved through switched capacitor onto the dc bus. However, this technique presents a challenge of the high inrush currents during a ride through compensation. In this work both analytical and experimental investigations were conducted in order to reduce the in-rush currents and its impact on the performance of the VSD during the STPI. Inrush peak currents were reduced by approximately 90%. Experimental results showed torque pulsations of 12.8% and 14.3% at the start and end of dc-link voltage compensation, respectively. A method for sizing the switched capacitor and the inrush limiting resistors is proposed. This methodology is based on the use of readily available nameplate information of the VSD and the electric motor. The proposed module can be retrofitted to existing VSDs that are based on v/f control.https://www.mdpi.com/1996-1073/14/24/8257variable speed driveshort-term power interruptionride-throughdc-linkinrush currentvoltage compensation |
| spellingShingle | Freeman Chiranga Lesedi Masisi Variable Speed Drive DC-Bus Voltage Dip Proofing Energies variable speed drive short-term power interruption ride-through dc-link inrush current voltage compensation |
| title | Variable Speed Drive DC-Bus Voltage Dip Proofing |
| title_full | Variable Speed Drive DC-Bus Voltage Dip Proofing |
| title_fullStr | Variable Speed Drive DC-Bus Voltage Dip Proofing |
| title_full_unstemmed | Variable Speed Drive DC-Bus Voltage Dip Proofing |
| title_short | Variable Speed Drive DC-Bus Voltage Dip Proofing |
| title_sort | variable speed drive dc bus voltage dip proofing |
| topic | variable speed drive short-term power interruption ride-through dc-link inrush current voltage compensation |
| url | https://www.mdpi.com/1996-1073/14/24/8257 |
| work_keys_str_mv | AT freemanchiranga variablespeeddrivedcbusvoltagedipproofing AT lesedimasisi variablespeeddrivedcbusvoltagedipproofing |