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You searched for +publisher:"University College Cork" +contributor:("O\'Sullivan, Dara L."). Showing records 1 – 2 of 2 total matches.

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University College Cork

1. Vazquez-Gutierrez, Yeny. Contributions to the modeling of the incremental optical encoder and speed estimation methods for motion control.

Degree: 2019, University College Cork

This work studies the incremental optical encoder sensor and its impact on motor motion. The small-signal model of the sensor combined with the chosen speed estimation method is derived, experimentally validated and compared with existing models. A novel experimental setup emulates the encoder behaviour. Therefore, the sensor is isolated from the rest of the system (motor and driver) that unavoidably biases the dynamic study. The small-signal model demonstrates that the phase lag of the encoder increases as the speed and the resolution decreases. This increment of the delay adversely reduces the phase margin of the motion control-loop. In addition, a simple lead compensator is proposed and implemented on a DSP to recover correct performance of the motor (smooth rotation) previously degraded by the encoder. The coefficients of the proposed lead compensator adapt to the specific commanded speed automatically. As part of this thesis an improvement of the elapsed time (ET) method, that expands the use of this method to all speed ranges, is proposed. The Improved-ET speed estimation method has a good balance between static error and dynamic behaviour. Advisors/Committee Members: Kavanagh, Richard, O'Sullivan, Dara L., Hayes, John G..

Subjects/Keywords: Small-signal modeling; Incremental optical encoder; Speed estimation methods; Motion control

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Vazquez-Gutierrez, Y. (2019). Contributions to the modeling of the incremental optical encoder and speed estimation methods for motion control. (Thesis). University College Cork. Retrieved from http://hdl.handle.net/10468/9530

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Vazquez-Gutierrez, Yeny. “Contributions to the modeling of the incremental optical encoder and speed estimation methods for motion control.” 2019. Thesis, University College Cork. Accessed September 23, 2020. http://hdl.handle.net/10468/9530.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Vazquez-Gutierrez, Yeny. “Contributions to the modeling of the incremental optical encoder and speed estimation methods for motion control.” 2019. Web. 23 Sep 2020.

Vancouver:

Vazquez-Gutierrez Y. Contributions to the modeling of the incremental optical encoder and speed estimation methods for motion control. [Internet] [Thesis]. University College Cork; 2019. [cited 2020 Sep 23]. Available from: http://hdl.handle.net/10468/9530.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Vazquez-Gutierrez Y. Contributions to the modeling of the incremental optical encoder and speed estimation methods for motion control. [Thesis]. University College Cork; 2019. Available from: http://hdl.handle.net/10468/9530

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


University College Cork

2. Blavette, Anne. Grid integration of wave energy & generic modelling of ocean devices for power system studies.

Degree: 2013, University College Cork

The work presented in this thesis covers four major topics of research related to the grid integration of wave energy. More specifically, the grid impact of a wave farm on the power quality of its local network is investigated. Two estimation methods were developed regarding the flicker level Pst generated by a wave farm in relation to its rated power as well as in relation to the impedance angle ¤łk of the node in the grid to which it is connected. The electrical design of a typical wave farm design is also studied in terms of minimum rating for three types of costly pieces of equipment, namely the VAr compensator, the submarine cables and the overhead line. The power losses dissipated within the farm's electrical network are also evaluated. The feasibility of transforming a test site into a commercial site of greater rated power is investigated from the perspective of power quality and of cables and overhead line thermal loading. Finally, the generic modelling of ocean devices, referring here to both wave and tidal current devices, is investigated. Advisors/Committee Members: O'Sullivan, Dara L., Egan, Michael G., Alcorn, Raymond, Lewis, Anthony W., SFI.

Subjects/Keywords: Wave energy; Power quality; Grid impact; Power system; Grid integration; Ocean energy; Generic modelling; Flicker; Dimensioning; Thermal loading; Electric power generation.; Ocean wave power.; Electric power systems.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Blavette, A. (2013). Grid integration of wave energy & generic modelling of ocean devices for power system studies. (Thesis). University College Cork. Retrieved from http://hdl.handle.net/10468/1129

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Blavette, Anne. “Grid integration of wave energy & generic modelling of ocean devices for power system studies.” 2013. Thesis, University College Cork. Accessed September 23, 2020. http://hdl.handle.net/10468/1129.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Blavette, Anne. “Grid integration of wave energy & generic modelling of ocean devices for power system studies.” 2013. Web. 23 Sep 2020.

Vancouver:

Blavette A. Grid integration of wave energy & generic modelling of ocean devices for power system studies. [Internet] [Thesis]. University College Cork; 2013. [cited 2020 Sep 23]. Available from: http://hdl.handle.net/10468/1129.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Blavette A. Grid integration of wave energy & generic modelling of ocean devices for power system studies. [Thesis]. University College Cork; 2013. Available from: http://hdl.handle.net/10468/1129

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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