Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Micro combined heat and power management for a residential system
Fuel cell technology has reached commercialisation of fuel cells in application areas such as residential power systems, automobile engines and driving of industrial manufacturing processes. This thesis gives an overview of the current state of fuel cell-based technology research and development, in...
Saved in:
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Electrical Engineering
2016
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613283153870848 |
|---|---|
| access_status_str | Open Access |
| author | Tichagwa, Anesu |
| author2 | Barendse, Paul Stanley |
| author_browse | Barendse, Paul Stanley Tichagwa, Anesu |
| author_facet | Barendse, Paul Stanley Tichagwa, Anesu |
| author_sort | Tichagwa, Anesu |
| collection | Thesis |
| description | Fuel cell technology has reached commercialisation of fuel cells in application areas such as residential power systems, automobile engines and driving of industrial manufacturing processes. This thesis gives an overview of the current state of fuel cell-based technology research and development, introduces a μCHP system sizing strategy and proposes methods of improving on the implementation of residential fuel cell-based μCHP technology. The three methods of controlling residential μCHP systems discussed in this thesis project are heat-led, electricity-led and cost-minimizing control. Simulations of a typical HT PEMFC -based residential μCHP unit are conducted using these control strategies. A model of a residential μCHP system is formulated upon which these simulated tests are conducted. From these simulations, equations to model the costs of running a fuel-cell based μCHP system are proposed. Having developed equations to quantify the running costs of the proposed μCHP system a method for determining the ideal size of a μCHP system is developed. A sizing technique based on industrial CHP sizing practices is developed in which the running costs and capital costs of the residential μCHP system are utilised to determine the optimal size of the system. Residential thermal and electrical load profile data of a typical Danish household are used. Having simulated the system a practical implementation of the power electronics interface between the fuel cell and household grid is done. Two topologies are proposed for the power electronics interface a three-stage topology and a two-stage topology. The efficiencies of the overall systems of both topologies are determined. The system is connected to the grid so the output of each system is phase-shifted and DC injection, harmonic distortion, voltage range and frequency range are determined for both systems to determine compliance with grid standards. Deviations between simulated results and experimental results are recorded and discussed and relevant conclusions are drawn from these. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/16914 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:33:40.116Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Department of Electrical Engineering |
| publisherStr | Department of Electrical Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/16914 Micro combined heat and power management for a residential system Tichagwa, Anesu Barendse, Paul Stanley Khan, Azeem Electrical Engineering proton exchange membrane fuel cell PEMFC combined heat and power CHP system power management micro-CHP Fuel cell technology has reached commercialisation of fuel cells in application areas such as residential power systems, automobile engines and driving of industrial manufacturing processes. This thesis gives an overview of the current state of fuel cell-based technology research and development, introduces a μCHP system sizing strategy and proposes methods of improving on the implementation of residential fuel cell-based μCHP technology. The three methods of controlling residential μCHP systems discussed in this thesis project are heat-led, electricity-led and cost-minimizing control. Simulations of a typical HT PEMFC -based residential μCHP unit are conducted using these control strategies. A model of a residential μCHP system is formulated upon which these simulated tests are conducted. From these simulations, equations to model the costs of running a fuel-cell based μCHP system are proposed. Having developed equations to quantify the running costs of the proposed μCHP system a method for determining the ideal size of a μCHP system is developed. A sizing technique based on industrial CHP sizing practices is developed in which the running costs and capital costs of the residential μCHP system are utilised to determine the optimal size of the system. Residential thermal and electrical load profile data of a typical Danish household are used. Having simulated the system a practical implementation of the power electronics interface between the fuel cell and household grid is done. Two topologies are proposed for the power electronics interface a three-stage topology and a two-stage topology. The efficiencies of the overall systems of both topologies are determined. The system is connected to the grid so the output of each system is phase-shifted and DC injection, harmonic distortion, voltage range and frequency range are determined for both systems to determine compliance with grid standards. Deviations between simulated results and experimental results are recorded and discussed and relevant conclusions are drawn from these. 2016-02-08T14:21:18Z 2016-02-08T14:21:18Z 2013 Master Thesis Masters MSc (Eng) http://hdl.handle.net/11427/16914 eng application/pdf Department of Electrical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Electrical Engineering proton exchange membrane fuel cell PEMFC combined heat and power CHP system power management micro-CHP Tichagwa, Anesu Micro combined heat and power management for a residential system |
| thesis_degree_str | Master's |
| title | Micro combined heat and power management for a residential system |
| title_full | Micro combined heat and power management for a residential system |
| title_fullStr | Micro combined heat and power management for a residential system |
| title_full_unstemmed | Micro combined heat and power management for a residential system |
| title_short | Micro combined heat and power management for a residential system |
| title_sort | micro combined heat and power management for a residential system |
| topic | Electrical Engineering proton exchange membrane fuel cell PEMFC combined heat and power CHP system power management micro-CHP |
| url | http://hdl.handle.net/11427/16914 |
| work_keys_str_mv | AT tichagwaanesu microcombinedheatandpowermanagementforaresidentialsystem |