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Jalili-Kharaajoo Mahdi,Mohammadi-Milasi Rasoul Institute of Control 2005 International Journal of Control, Automation, and Vol.3 No.S
A novel neuro controller based simple neuro-structure with modified error function is introduced in this paper. This controller consists of two independent controllers, known as the voltage regulator and the angular controller. The voltage regulator is used to modify terminal voltage for the purpose of tracking a reference voltage. The angular controller is utilized to guarantee the stability of the system. In this structure each neuron uses a linear hard limit activation function that depends on the controlled variable and its derivatives. There is no need for parameter identification or any off-line training data. Two proposed controllers are merged by a smooth switch to build a complete controller. The effectiveness of the proposed novel control action is demonstrated through some computer simulations on a Single-Machine Infinite-Bus (SMIB) power system.
Mahdi Jalili-Kharaajoo,Rasoul Mohammadi-Milasi 대한전기학회 2005 International Journal of Control, Automation, and Vol.3 No.2
A novel neuro controller based simple neuro-structure with modified error function is introduced in this paper. This controller consists of two independent controllers, known as the voltage regulator and the angular controller. The voltage regulator is used to modify terminal voltage for the purpose of tracking a reference voltage. The angular controller is utilized to guarantee the stability of the system. In this structure each neuron uses a linear hard limit activation function that depends on the controlled variable and its derivatives. There is no need for parameter identification or any off-line training data. Two proposed controllers are merged by a smooth switch to build a complete controller. The effectiveness of the proposed novel control action is demonstrated through some computer simulations on a Single-Machine Infinite-Bus (SMIB) power system.
Chalitha Liyanage,Inam Nutkani,Lasantha Meegahapola,Mahdi Jalili 전력전자학회 2023 ICPE(ISPE)논문집 Vol.2023 No.-
Power synchronisation control (PSC) was introduced initially for the HVDC applications as an alternative to the vector current control where it has demonstrated improved performance under weak grid conditions. However, the application of the PSC as a grid-forming inverter (GFMI) and its performance under different network impedance conditions have not been thoroughly investigated in the literature. This paper has evaluated the PSC based inverter performance under different network conditions, and showed that the stability performance of the PSC-based inverter deteriorates when the network is predominantly resistive. To address this issue, modified PSC-based controller, with virtual impedance and virtual power-based decoupling strategies, are proposed to improve the controller performance and stability for networks with low X/R ratios. It has been shown that the controller performance has been improved with the proposed decoupling strategies. This will enable the deployment of PSC-based GFMIs under weak grid conditions and improve the ability to provide system support services under predominantly resistive conditions without losing stability.
Abdolrahim Ahmadi,Saeid Kaviani,Marjan Yaghmaie,Hossein Pashaiefar,Mohammad Ahmadvand,Mahdi Jalili,Kamran Alimoghaddam,Mohammad Eslamijouybari,Ardeshir Ghavamzadeh 대한혈액학회 2018 Blood Research Vol.53 No.4
BackgroundRecent studies have devoted much attention to non-protein-coding transcripts in relation to a wide range of malignancies. MALAT1, a long non-coding RNA, has been reported to be associated with cancer progression and prognosis. Thus, we here determined MALAT1 gene expression in chronic lymphocytic leukemia (CLL), a genetically heteroge-neous disease, and explored its possible relationships with cytogenetic abnormalities.MethodsMALAT1 expression level was evaluated using real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR) on blood mononuclear cells from 30 non-treated CLL patients and 30 matched healthy controls. Cytogenetic abnormalities were de-termined in patients by fluorescence in situ hybridization (FISH).ResultsMALAT1 expression level was up-regulated in the CLL group compared to healthy controls (P=0.008). Del13q14, followed by Del11q22, were the most prevalent cytogenetic abnormalities. We found no association between the FISH results and MALAT1 ex-pression in patients.ConclusionAltered expression of MALAT1 is associated with CLL development. Further investigations are required to assess the relationship between this long non-coding RNA and CLL patient survival and prognosis.