Development and Validation of a Transient Electro-Thermo- Mechanical Model for Parabolic Dish Micro Gas Turbines.
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| Title: | Development and Validation of a Transient Electro-Thermo- Mechanical Model for Parabolic Dish Micro Gas Turbines. |
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| Authors: | Shamekhi Amiri, Shahrbanoo1 (AUTHOR), Al-Zaili, Jafar1,2 (AUTHOR) jafar.alzaili@city.ac.uk, Sayma, Abdulnaser I.2 (AUTHOR) |
| Source: | Energies (19961073). Mar2026, Vol. 19 Issue 5, p1188. 28p. |
| Subject Terms: | *Transients (Dynamics), *Simulation methods & models, *Solar thermal energy, *Electric power consumption, *Gas turbines, *Heat radiation & absorption |
| Abstract: | Small-scale concentrated solar power (CSP) systems coupled with micro gas turbines (MGTs) offer a promising solution for decentralised and sustainable power generation. However, CSP–MGT systems are subject to pronounced transient behaviour during start-up and operation due to fluctuating solar irradiance, making accurate transient modelling essential. This work introduces a fully coupled transient electro-thermo-mechanical model of a CSP-driven micro gas turbine, explicitly linking thermal transients and heat soakage effects to electrical performance during start-up. Unlike existing models, the proposed approach captures the interaction between turbomachinery thermal inertia, shaft dynamics, and detailed electrical machine and power converter losses under real-world transient operating conditions. The model integrates thermodynamic, mechanical, electrical, and control subsystems within a unified framework using a lumped-volume formulation suitable for real-time-capable simulations. To improve prediction accuracy at low rotational speeds, a dedicated interpolation strategy for turbomachinery performance maps is implemented. The model is validated at both component and system levels using experimental data from a 6 kWe CSP–MGT test facility. The results show good agreement with measurements, with maximum deviations of approximately 8% in receiver outlet temperature and less than 6% in air mass flow rate. The findings demonstrate that accounting for heat soakage is critical for a realistic prediction of thermal and electrical transients, as neglecting thermal inertia leads to an underestimation of the start-up electrical energy consumption by up to 140%, highlighting the dominant role of thermal mass effects in small-scale micro gas turbines compared to larger systems. The proposed model provides a robust tool for analysing start-up behaviour and supports improved control and operational strategy development for CSP–MGT systems under variable solar conditions. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
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| Header | DbId: enr DbLabel: Energy & Power Source An: 192640913 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Development and Validation of a Transient Electro-Thermo- Mechanical Model for Parabolic Dish Micro Gas Turbines. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Shamekhi+Amiri%2C+Shahrbanoo%22">Shamekhi Amiri, Shahrbanoo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Al-Zaili%2C+Jafar%22">Al-Zaili, Jafar</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> jafar.alzaili@city.ac.uk</i><br /><searchLink fieldCode="AR" term="%22Sayma%2C+Abdulnaser+I%2E%22">Sayma, Abdulnaser I.</searchLink><relatesTo>2</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. Mar2026, Vol. 19 Issue 5, p1188. 28p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Transients+%28Dynamics%29%22">Transients (Dynamics)</searchLink><br />*<searchLink fieldCode="DE" term="%22Simulation+methods+%26+models%22">Simulation methods & models</searchLink><br />*<searchLink fieldCode="DE" term="%22Solar+thermal+energy%22">Solar thermal energy</searchLink><br />*<searchLink fieldCode="DE" term="%22Electric+power+consumption%22">Electric power consumption</searchLink><br />*<searchLink fieldCode="DE" term="%22Gas+turbines%22">Gas turbines</searchLink><br />*<searchLink fieldCode="DE" term="%22Heat+radiation+%26+absorption%22">Heat radiation & absorption</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Small-scale concentrated solar power (CSP) systems coupled with micro gas turbines (MGTs) offer a promising solution for decentralised and sustainable power generation. However, CSP–MGT systems are subject to pronounced transient behaviour during start-up and operation due to fluctuating solar irradiance, making accurate transient modelling essential. This work introduces a fully coupled transient electro-thermo-mechanical model of a CSP-driven micro gas turbine, explicitly linking thermal transients and heat soakage effects to electrical performance during start-up. Unlike existing models, the proposed approach captures the interaction between turbomachinery thermal inertia, shaft dynamics, and detailed electrical machine and power converter losses under real-world transient operating conditions. The model integrates thermodynamic, mechanical, electrical, and control subsystems within a unified framework using a lumped-volume formulation suitable for real-time-capable simulations. To improve prediction accuracy at low rotational speeds, a dedicated interpolation strategy for turbomachinery performance maps is implemented. The model is validated at both component and system levels using experimental data from a 6 kWe CSP–MGT test facility. The results show good agreement with measurements, with maximum deviations of approximately 8% in receiver outlet temperature and less than 6% in air mass flow rate. The findings demonstrate that accounting for heat soakage is critical for a realistic prediction of thermal and electrical transients, as neglecting thermal inertia leads to an underestimation of the start-up electrical energy consumption by up to 140%, highlighting the dominant role of thermal mass effects in small-scale micro gas turbines compared to larger systems. The proposed model provides a robust tool for analysing start-up behaviour and supports improved control and operational strategy development for CSP–MGT systems under variable solar conditions. [ABSTRACT FROM AUTHOR] |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=192640913 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/en19051188 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 28 StartPage: 1188 Subjects: – SubjectFull: Transients (Dynamics) Type: general – SubjectFull: Simulation methods & models Type: general – SubjectFull: Solar thermal energy Type: general – SubjectFull: Electric power consumption Type: general – SubjectFull: Gas turbines Type: general – SubjectFull: Heat radiation & absorption Type: general Titles: – TitleFull: Development and Validation of a Transient Electro-Thermo- Mechanical Model for Parabolic Dish Micro Gas Turbines. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Shamekhi Amiri, Shahrbanoo – PersonEntity: Name: NameFull: Al-Zaili, Jafar – PersonEntity: Name: NameFull: Sayma, Abdulnaser I. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 03 Text: Mar2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 19961073 Numbering: – Type: volume Value: 19 – Type: issue Value: 5 Titles: – TitleFull: Energies (19961073) Type: main |
| ResultId | 1 |
