WorldCat Identities

Mirzaian Dehkordi, Abdollah

Works: 3 works in 4 publications in 1 language and 5 library holdings
Roles: Opponent, Author
Publication Timeline
Most widely held works by Abdollah Mirzaian Dehkordi
Conception de machines à aimants permanents à haute densité de couple pour les éoliennes de forte puissance by Stéphane Mouty( Book )

2 editions published in 2013 in French and held by 2 WorldCat member libraries worldwide

Given the European guidelines, which consist into producing 20% of the energy from renewable sources, the governments are obliged to invest in new types of production systems. An energy market survey will show the part of renewable energy in the energy consumption. After the hydroelectric systems, the wind turbines are the most common systems using renewable sources. The current objectives have led to consider the installation of offshore wind turbine. The specific limitations led the market players to develop new systems with adapted generators: direct drive permanent magnet generator. Model of the permanent magnet machines is described. First a conventional machine topology is presented, then other solutions will be studied with the objective of increasing the torque density. One of them is the concentrated winding machines where the end winding overlapping is avoided. On the other hand, use multiphase system becomes very interesting in order to increase system reliability and work in fault tolerant modes. The strategy that was adopted for the design of the generator to fit the best the specification is also discussed as well as the results of the tests. At the end, the wind turbine equipped with this alternator, has a power density at least 15% higher than the 2013's available solutions
Contribution à la commande numérique d'un cycloconvertisseur triphasé by Abdollah Mirzaian Dehkordi( Book )

1 edition published in 1985 in French and held by 2 WorldCat member libraries worldwide

Simulation temps réel de dispositifs électrotechniques by Andriamaharavo Rakotozafy( )

1 edition published in 2014 in French and held by 1 WorldCat member library worldwide

Industrial controllers are always subjected to parameters change, modifications and permanent improvements. They have to follow off-the-shelf technologies as well as hardware than software (libraries, operating system, control regulations ...). Apart from these primary necessities, additional aspects concerning the system operation that includes sequential, protections, human machine interface and system stability have to be implemented and interfaced correctly. In addition, these functions should be generically structured to be used in common for wide range of applications. All modifications (hardware or software) even slight ones are risky. In the absence of a prior validation system, these modifications are potentially a source of system instability or damage. On-site debugging and modification are not only extremely expensive but can be highly risky, cumulate expenditure and reduce productivity. This concerns all major industrial applications, Oil & Gas installations and Marine applications. Working conditions are difficult and the amount of tests that can be done is strictly limited to the mandatory ones. This thesis proposes two levels of industrial controller validation which can be done in experimental test platform : an algorithm validation level called Software In the Loop (SIL) treated in the second chapter ; a physical hardware validation called Hardware In the Loop (HIL) treated in the third chapter. The SIL validates only the control algorithm, the control law and the computed references without taking into account neither the actual physical commands nor the physical input feedbacks managed by the Input/Output boards. SIL validation of the system where industrial asynchronous motor is fed and regulated by a three level Variable Speed Drive with a three level voltage source converter is treated in the second chapter with a particular modeling approach adapted to such validation. The last chapter presents the HIL validation with various hardware implementations (Field Programmable Gate Array (FPGA), processors). Such validation checks both the control algorithm and the actual physical Input/Output signals generated by the dedicated boards. Each time, the modeling approach is chosen according to the hardware implementation. Currently this work has contributed to the system validation used by General Electric - Power Conversion © (GE-PC) as part of their validation phase that is mandatory for Oil & Gas projects and Marine applications
Audience Level
Audience Level
  General Special  
Audience level: 0.94 (from 0.92 for Conception ... to 0.96 for Conception ...)

French (4)