Research on the uncontrolled zero-sequence current of an open-end winding PMSM with common DC link
This thesis describes the research based on a particular type of the motor drives called an open-end winding permanent magnet synchronous motor drive with common DC link. These types of drives are an arrangement of two three phase inverters connected to both ends of a permanent magnet synchronous mo...
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| Format: | Thesis (University of Nottingham only) |
| Language: | English |
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2021
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| Online Access: | https://eprints.nottingham.ac.uk/65328/ |
| _version_ | 1848800211635273728 |
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| author | Hunter, Nick |
| author_facet | Hunter, Nick |
| author_sort | Hunter, Nick |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | This thesis describes the research based on a particular type of the motor drives called an open-end winding permanent magnet synchronous motor drive with common DC link. These types of drives are an arrangement of two three phase inverters connected to both ends of a permanent magnet synchronous motor and are fed from a single direct current source. Therefore, it has a return path between the two inverters. This allows the most prominent third harmonic back EMF to introduce the zero-sequence current. Hence, these kinds of motor drives suffer from the circulating zero-sequence current. Although this current usually is undesired and, therefore, suppressed using various control techniques, there are some cases when the suppression of this current is unfeasible. Hence, the zero-sequence current could be left flowing in the system. High-speed drives could be considered to be an example of such a system.
The research introduced in this thesis is centred on the analysis of the mentioned zero-sequence current that is flowing in the system due to the specific properties of the machine. It features a full mathematical derivation of the nature of the zero-sequence current flowing in the system because of the machine side of the drive and a comprehensive analysis of the power loss in conductor due to this zero-sequence component.
The analysis performed in this thesis resulted in a proposal of a couple of novel solutions for the mitigation of the zero-sequence component’s impact on the drive such as the torque ripple and the power loss in conductor. In addition, one of the research outcomes was the development of a novel technique that turns the disadvantage of having the zero-sequence component flowing freely in the drive to its advantage.
In addition, the research produced in this thesis led to the development of a software solution that is meant to aid design and control engineers to mitigate the power losses in an open-end winding permanent magnet synchronous motor drive with common DC link. |
| first_indexed | 2025-11-14T20:47:57Z |
| format | Thesis (University of Nottingham only) |
| id | nottingham-65328 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T20:47:57Z |
| publishDate | 2021 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-653282025-02-28T15:12:09Z https://eprints.nottingham.ac.uk/65328/ Research on the uncontrolled zero-sequence current of an open-end winding PMSM with common DC link Hunter, Nick This thesis describes the research based on a particular type of the motor drives called an open-end winding permanent magnet synchronous motor drive with common DC link. These types of drives are an arrangement of two three phase inverters connected to both ends of a permanent magnet synchronous motor and are fed from a single direct current source. Therefore, it has a return path between the two inverters. This allows the most prominent third harmonic back EMF to introduce the zero-sequence current. Hence, these kinds of motor drives suffer from the circulating zero-sequence current. Although this current usually is undesired and, therefore, suppressed using various control techniques, there are some cases when the suppression of this current is unfeasible. Hence, the zero-sequence current could be left flowing in the system. High-speed drives could be considered to be an example of such a system. The research introduced in this thesis is centred on the analysis of the mentioned zero-sequence current that is flowing in the system due to the specific properties of the machine. It features a full mathematical derivation of the nature of the zero-sequence current flowing in the system because of the machine side of the drive and a comprehensive analysis of the power loss in conductor due to this zero-sequence component. The analysis performed in this thesis resulted in a proposal of a couple of novel solutions for the mitigation of the zero-sequence component’s impact on the drive such as the torque ripple and the power loss in conductor. In addition, one of the research outcomes was the development of a novel technique that turns the disadvantage of having the zero-sequence component flowing freely in the drive to its advantage. In addition, the research produced in this thesis led to the development of a software solution that is meant to aid design and control engineers to mitigate the power losses in an open-end winding permanent magnet synchronous motor drive with common DC link. 2021-08-04 Thesis (University of Nottingham only) NonPeerReviewed application/pdf en cc_by https://eprints.nottingham.ac.uk/65328/1/Thesis_Nick_Hunter_Corrected.pdf Hunter, Nick (2021) Research on the uncontrolled zero-sequence current of an open-end winding PMSM with common DC link. PhD thesis, University of Nottingham. Zero-sequence current; open-end winding PMSM; Electric currents; Electric motors Synchronous; Electric inverters; |
| spellingShingle | Zero-sequence current; open-end winding PMSM; Electric currents; Electric motors Synchronous; Electric inverters; Hunter, Nick Research on the uncontrolled zero-sequence current of an open-end winding PMSM with common DC link |
| title | Research on the uncontrolled zero-sequence current of an open-end winding PMSM with common DC link |
| title_full | Research on the uncontrolled zero-sequence current of an open-end winding PMSM with common DC link |
| title_fullStr | Research on the uncontrolled zero-sequence current of an open-end winding PMSM with common DC link |
| title_full_unstemmed | Research on the uncontrolled zero-sequence current of an open-end winding PMSM with common DC link |
| title_short | Research on the uncontrolled zero-sequence current of an open-end winding PMSM with common DC link |
| title_sort | research on the uncontrolled zero-sequence current of an open-end winding pmsm with common dc link |
| topic | Zero-sequence current; open-end winding PMSM; Electric currents; Electric motors Synchronous; Electric inverters; |
| url | https://eprints.nottingham.ac.uk/65328/ |