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RISS 인기검색어
- 검색키워드
- 저자 : Pedram Hosseini (검색결과 4 건)
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A New Multi-Input Multi-output DC-DC Bidirectional Converter with MPPT Control Applicable for PV
Seyed Hossein Hosseini,Zahra Saadatizadeh,Pedram Chavoshipour Heris 제어로봇시스템학회 2018 제어로봇시스템학회 국제학술대회 논문집 Vol.2018 No.10
In this paper, a non-isolated multiport bidirectional dc-dc converter is proposed. Since the proposed converter is multiport, the reliability of the proposed converter in sensitive load applications is high. Due to the input current sharing among the paths, the current passes through the semiconductor components is divided with a specific ratio in the primary side of the converter, then, the related losses are decreased significantly. The conversion ratio of the proposed converter is better than the buck-boost converters with cascaded or series topologies. The input current ripple of the proposed converter is less than the conventional bidirectional converters. Moreover, the controlling scheme of the proposed converter is easy and the proposed converter has low input current ripple which makes it suitable for utilizing in photovoltaic systems. Therefore, the maximum photovoltaic module power through a MPPT (maximum power point tracking) controller in varying radiation conditions is extracted. In this study, the analytical analysis of the proposed dc-dc bidirectional converter for all operating modes is provided and the required equations are calculated. Finally, to demonstrate the validity of the analysis, the simulation results are extracted from PSCAD/EMTDC.
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Simplified dolphin echolocation algorithm for optimum design of frame
Ali Kaveh,Seyed Rohollah Hoseini Vaez,Pedram Hosseini 국제구조공학회 2018 Smart Structures and Systems, An International Jou Vol.21 No.3
Simplified Dolphin Echolocation (SDE) algorithm is a recently developed meta-heuristic algorithm. This algorithm is an improved and simplified version of the Dolphin Echolocation Optimization (DEO) method, based on the baiting behavior of the dolphins. The main advantage of the SDE algorithm is that it needs no empirical parameter. In this paper, the SDE algorithm is applied for optimization of three well-studied frame structures. The designs are then compared with those of other meta-heuristic methods from the literature. Numerical results show the efficiency of the SDE algorithm and its competitive ability with other well-established meta-heuristics methods.
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Ali Kaveh,Seyed Rohollah Hoseini Vaez,Pedram Hosseini,Narges Fallah 국제구조공학회 2016 Smart Structures and Systems, An International Jou Vol.18 No.5
Nowadays, there are two classes of methods for damage detection in structures consisting of static and dynamic. The dynamic methods are based on studying the changes in structure\'s dynamic characteristics. The theoretical basis of this method is that damage causes changes in dynamic characteristics of structures. The dynamic methods are divided into two categories: signal based and modal based. The modal based methods utilize the modal properties consisting of natural frequencies, modal damping and mode shapes. As the modal properties are sensitive to changes in the structure, these can be used for detecting the damages. In this study, using dynamic method and modal based approach (natural frequencies and mode shapes), the objective function is formulated. Then, detection of damages of truss structures is addressed by using Simplified Dolphin Echolocation algorithm and solving inverse optimization problem. Many scenarios are used to simulate the damages. To demonstrate the ability of the algorithm, different truss structures with several multiple elements scenarios are tested using a few runs. The influence of the two different levels of noise in the modal data for these scenarios is also considered. The last example of this article is investigated using a different mutation. This mutation obtains the exact answer with fewer loops and population by limited computational effort.
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Simplified dolphin echolocation algorithm for optimum design of frame
Kaveh, Ali,Vaez, Seyed Rohollah Hoseini,Hosseini, Pedram Techno-Press 2018 Smart Structures and Systems, An International Jou Vol.21 No.3
Simplified Dolphin Echolocation (SDE) algorithm is a recently developed meta-heuristic algorithm. This algorithm is an improved and simplified version of the Dolphin Echolocation Optimization (DEO) method, based on the baiting behavior of the dolphins. The main advantage of the SDE algorithm is that it needs no empirical parameter. In this paper, the SDE algorithm is applied for optimization of three well-studied frame structures. The designs are then compared with those of other meta-heuristic methods from the literature. Numerical results show the efficiency of the SDE algorithm and its competitive ability with other well-established meta-heuristics methods.
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