Investigating long-term sustainability of financing photovoltaic systems, small scale inverters for the local communities in Soweto, South Africa
- Authors: Mnyani, Siphamandla
- Date: 2024-04
- Subjects: Photovoltaic power systems , Solar energy , Sustainable development -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/65197 , vital:74045
- Description: The study explores the energy supply challenges faced by South Africa. The research was triggered by the decline of the social fabric and lack of economic development in communities such as Soweto due to energy crisis in South Africa. It also analyses the impact that the energy supply challenges have on communities, as well as socio-economic development, employment opportunities and human development. Hence, it provides the nexus between the feasibility of funding photovoltaic (PV) installations, supply of clean reliable energy, socio-economic development, and environmental sustainability. An in-depth literature review was conducted to obtain insights into various funding mechanisms that were adopted in Asia and the Andean countries for the installation of renewable PV systems to provide electricity in marginalised communities, with the aim of achieving sustainable development. This study was conducted using quantitative research methods, which consisted of collecting data from Soweto residents and using probability sampling method, 92 of the respondents completed the survey. The data collected was analysed using data analysis techniques such as, Pearson correlation test, Chi2 and sample T-testing analysis which were conducted to help the researcher to create knowledge and better decision-making and allowed for multiple measurements to be analysed simultaneously. The results obtained from the Pearson correlation as well as Chi2 techniques, indicated a positive relationship between the value of funding PV solar systems and the installation of small-scale inverters in Soweto Township. The analysis performed shows that funding the installation of PV solar system will contribute towards affordable, sustainable energy as well as economic growth in Soweto. Strong emphasis should be put on the analysis of funding models that will contribute towards affordable, clean, sustainable energy in the Townships. This can be achieved through tax breaks or incentives that were implemented by the national treasury in February 2023 or, the establishment of green funds coupled with incentives from the United Nations (UN) (National treasury , 2023). This study was significant in South Africa, since there are no studies of similar nature that have been conducted before, that are related to funding models, renewable energies technologies, micro grids for the marginalised communities. , Thesis (MBA) -- Faculty of Business and Economic Sciences, Business School, 2024
- Full Text:
- Date Issued: 2024-04
- Authors: Mnyani, Siphamandla
- Date: 2024-04
- Subjects: Photovoltaic power systems , Solar energy , Sustainable development -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/65197 , vital:74045
- Description: The study explores the energy supply challenges faced by South Africa. The research was triggered by the decline of the social fabric and lack of economic development in communities such as Soweto due to energy crisis in South Africa. It also analyses the impact that the energy supply challenges have on communities, as well as socio-economic development, employment opportunities and human development. Hence, it provides the nexus between the feasibility of funding photovoltaic (PV) installations, supply of clean reliable energy, socio-economic development, and environmental sustainability. An in-depth literature review was conducted to obtain insights into various funding mechanisms that were adopted in Asia and the Andean countries for the installation of renewable PV systems to provide electricity in marginalised communities, with the aim of achieving sustainable development. This study was conducted using quantitative research methods, which consisted of collecting data from Soweto residents and using probability sampling method, 92 of the respondents completed the survey. The data collected was analysed using data analysis techniques such as, Pearson correlation test, Chi2 and sample T-testing analysis which were conducted to help the researcher to create knowledge and better decision-making and allowed for multiple measurements to be analysed simultaneously. The results obtained from the Pearson correlation as well as Chi2 techniques, indicated a positive relationship between the value of funding PV solar systems and the installation of small-scale inverters in Soweto Township. The analysis performed shows that funding the installation of PV solar system will contribute towards affordable, sustainable energy as well as economic growth in Soweto. Strong emphasis should be put on the analysis of funding models that will contribute towards affordable, clean, sustainable energy in the Townships. This can be achieved through tax breaks or incentives that were implemented by the national treasury in February 2023 or, the establishment of green funds coupled with incentives from the United Nations (UN) (National treasury , 2023). This study was significant in South Africa, since there are no studies of similar nature that have been conducted before, that are related to funding models, renewable energies technologies, micro grids for the marginalised communities. , Thesis (MBA) -- Faculty of Business and Economic Sciences, Business School, 2024
- Full Text:
- Date Issued: 2024-04
Comparative performance of 3-kWp ranges Solar Photovoltaic Systems under varying meteorological conditions in Alice, Eastern Cape Province, South Africa
- Apeh, Oliver Okechukwu https://orcid.org/0000-0003-4076-0613
- Authors: Apeh, Oliver Okechukwu https://orcid.org/0000-0003-4076-0613
- Date: 2021-08
- Subjects: Photovoltaic power systems , Solar energy
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/21567 , vital:48888
- Description: PVsystem has recently emerged in South Africa as a way to curb the country’s persistent shortage of electricity. A wide effort for the past few decades have targeted at study, testing and demonstration of PV power systems which was established all over the country as an appropriate measure to tackle transportation, agriculture, industry, commercial as well as domestic activities. In view of these drives, both off-grid and grid-connected PV systems are being applied. However, operating a building with an off-grid system is one of the means to providing the possibility of energy access to places far away from the national grid. As an off-grid choice, 50 W SHS is being distributed to customers in distant rustic parts of the country where grid option is difficult to access. But the SHS of the stated capacity can barely generate 0.3 to 0.4 kWh of electric energy per day, even at the optimal solar radiations. In view of this, more efforts are directed at expanding the off-grid systems to accommodate large rural households in South Africa. This thesis is dedicated to a study on the various configurations and components of PV power plant as a way to enhance electricity generations in South Africa. To this effect, different power plants were considered at SolarWatt park, University of Fort Hare with the aim to conduct a comparative analysis of the charge controllers with respect to the charge and discharge rates of their respective batteries. The grid-connected PV power generation was classified into hybrid PV and grid-assisted PV, while off-grid is a BIPV. These power plants generations were installed for the purpose of research level with a total capacity of 11.4 kW. The off-grid system is made up of HIT modules, FlexMax80 charge controller, Victron energy inverter and M-Molar battery bank. The hybrid and grid-assisted systems each consist of 15 polycrystalline modules and Microcare charge controllers. In addition, hybrid comprises SMA Sunny Island inverter and Trojan battery bank whereas grid-assisted consist of Microcare inverter and Hoppercke battery bank. The first part of the experimental work was monitored, and the meteorological parameters which are ambient temperature, solar radiation, relative humidity and wind speed, were measured and evaluated while electrical parameters includes PV current and voltage, MPPT current and voltage, battery current and voltage and inverter current and voltage were also measured and evaluated in the second part of the experiment. This lasted for a period of four years, starting from 1st January 2017 to 31st December 2020. Similarly, the second aspect was to monitor the electrical performance of the three systems and was performed for a period of six months, starting from January to June 2019. During the second experiment, hybrid and grid-assisted systems were reconfigured to function as off-grid systems. Moreover, a detailed data acquisition system designed to measure and record both meteorological and electrical parameters affecting the performance of the systems. The electrical parameters include PV current and voltage, MPPT current, battery current and voltage and inverter current and voltage. Other parameters in the measurements are; inverter efficiency, active and apparent power, while meteorological parameters include; solar irradiance, ambient temperature, relative humidity, wind speed and direction. The meteorological results show that the maximum and minimum mean amount of global solar radiation was 7.34 kWh/m2/day in December and 3.03 kWh/m2/day in June, respectively, while the average radiation and temperature for the typical year were 4.98 kWh/m2/day and 16.88 oC respectively. The solar radiations obtained are within the range in major places in South Africa. Similarly, an average wind speed of 2.5 m/s is experienced in Alice in a year and average solar radiation of 606.06 W/m2 in summer and 346.17 W/m2 in winter. The three lead-acid battery systems monitored under the electrical aspect are M-Molar, Trojan and Hoppecke battery systems. It was established that the charging current decreases gradually from 27.7 to 18.5 A for the M-Molar while Hoppecke and Trojan deceased respectively from 15 to 10 A and 23 to 13 A at the end of each phase by charging it at the maximum power point of the PV array. It was equally found that the M-Molar battery current has the highest rate of charging and quickest rate of discharging in comparison to the other two batteries. Finally, from the results gotten from this research, we may propose that the solar PV system contributes significantly to the satisfaction of the needed electricity in South Africa. , Thesis (PhD) -- Faculty of Science and Agriculture, 2021
- Full Text:
- Date Issued: 2021-08
- Authors: Apeh, Oliver Okechukwu https://orcid.org/0000-0003-4076-0613
- Date: 2021-08
- Subjects: Photovoltaic power systems , Solar energy
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/21567 , vital:48888
- Description: PVsystem has recently emerged in South Africa as a way to curb the country’s persistent shortage of electricity. A wide effort for the past few decades have targeted at study, testing and demonstration of PV power systems which was established all over the country as an appropriate measure to tackle transportation, agriculture, industry, commercial as well as domestic activities. In view of these drives, both off-grid and grid-connected PV systems are being applied. However, operating a building with an off-grid system is one of the means to providing the possibility of energy access to places far away from the national grid. As an off-grid choice, 50 W SHS is being distributed to customers in distant rustic parts of the country where grid option is difficult to access. But the SHS of the stated capacity can barely generate 0.3 to 0.4 kWh of electric energy per day, even at the optimal solar radiations. In view of this, more efforts are directed at expanding the off-grid systems to accommodate large rural households in South Africa. This thesis is dedicated to a study on the various configurations and components of PV power plant as a way to enhance electricity generations in South Africa. To this effect, different power plants were considered at SolarWatt park, University of Fort Hare with the aim to conduct a comparative analysis of the charge controllers with respect to the charge and discharge rates of their respective batteries. The grid-connected PV power generation was classified into hybrid PV and grid-assisted PV, while off-grid is a BIPV. These power plants generations were installed for the purpose of research level with a total capacity of 11.4 kW. The off-grid system is made up of HIT modules, FlexMax80 charge controller, Victron energy inverter and M-Molar battery bank. The hybrid and grid-assisted systems each consist of 15 polycrystalline modules and Microcare charge controllers. In addition, hybrid comprises SMA Sunny Island inverter and Trojan battery bank whereas grid-assisted consist of Microcare inverter and Hoppercke battery bank. The first part of the experimental work was monitored, and the meteorological parameters which are ambient temperature, solar radiation, relative humidity and wind speed, were measured and evaluated while electrical parameters includes PV current and voltage, MPPT current and voltage, battery current and voltage and inverter current and voltage were also measured and evaluated in the second part of the experiment. This lasted for a period of four years, starting from 1st January 2017 to 31st December 2020. Similarly, the second aspect was to monitor the electrical performance of the three systems and was performed for a period of six months, starting from January to June 2019. During the second experiment, hybrid and grid-assisted systems were reconfigured to function as off-grid systems. Moreover, a detailed data acquisition system designed to measure and record both meteorological and electrical parameters affecting the performance of the systems. The electrical parameters include PV current and voltage, MPPT current, battery current and voltage and inverter current and voltage. Other parameters in the measurements are; inverter efficiency, active and apparent power, while meteorological parameters include; solar irradiance, ambient temperature, relative humidity, wind speed and direction. The meteorological results show that the maximum and minimum mean amount of global solar radiation was 7.34 kWh/m2/day in December and 3.03 kWh/m2/day in June, respectively, while the average radiation and temperature for the typical year were 4.98 kWh/m2/day and 16.88 oC respectively. The solar radiations obtained are within the range in major places in South Africa. Similarly, an average wind speed of 2.5 m/s is experienced in Alice in a year and average solar radiation of 606.06 W/m2 in summer and 346.17 W/m2 in winter. The three lead-acid battery systems monitored under the electrical aspect are M-Molar, Trojan and Hoppecke battery systems. It was established that the charging current decreases gradually from 27.7 to 18.5 A for the M-Molar while Hoppecke and Trojan deceased respectively from 15 to 10 A and 23 to 13 A at the end of each phase by charging it at the maximum power point of the PV array. It was equally found that the M-Molar battery current has the highest rate of charging and quickest rate of discharging in comparison to the other two batteries. Finally, from the results gotten from this research, we may propose that the solar PV system contributes significantly to the satisfaction of the needed electricity in South Africa. , Thesis (PhD) -- Faculty of Science and Agriculture, 2021
- Full Text:
- Date Issued: 2021-08
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