Rapport au Président de la République sur les opérations des banques coloniales ... / Commission de surveillance des banques coloniales

1876-1879.

Rapport au Président de la République sur les opérations des banques coloniales ... / Commission de surveillance des banques coloniales

1900-1901.

Rapport au Président de la République sur les opérations des banques coloniales ... / Commission de surveillance des banques coloniales

1892-1893.

Rapport au Président de la République sur les opérations des banques coloniales ... / Commission de surveillance des banques coloniales

1891-1892.

Rapport au Président de la République sur les opérations des banques coloniales ... / Commission de surveillance des banques coloniales

1888-1889.

Rapport au Président de la République sur les opérations des banques coloniales ... / Commission de surveillance des banques coloniales

1898-1899.

Rapport au Président de la République sur les opérations des banques coloniales ... / Commission de surveillance des banques coloniales

1899-1900.

Rapport au Président de la République sur les opérations des banques coloniales ... / Commission de surveillance des banques coloniales

1905-1906.

Rapport au Président de la République sur les opérations des banques coloniales ... / Commission de surveillance des banques coloniales

1889-1890.

Rapport au Président de la République sur les opérations des banques coloniales ... / Commission de surveillance des banques coloniales

1886-1887.

Concentrated Winding Multiphase Permanent Magnet Machine Design and Electromagnetic Properties – Case Axial Flux Machine

Concentrated winding permanent magnet machines and their electromagnetic properties are studied in this doctoral thesis. The thesis includes a number of main tasks related to the application of permanent magnets in concentrated winding open slot machines. Suitable analytical methods are required for the first design calculations of a new machine. Concentrated winding machines differ from conventional integral slot winding machines in such a way that adapted analytical calculation methods are needed. A simple analytical model for calculating the concentrated winding axial flux machines is provided. The next three main design tasks are discussed in more detail in the thesis. The magnetic length of the rotor surface magnet machines is studied, and it is shown that the traditional methods have to be modified also in this respect. An important topic in this study has been to evaluate and minimize the rotor permanent magnet Joule losses by using segmented magnets in the calculations and experiments. Determination of the magnetizing and leakage inductances for a concentrated winding machine and the torque production capability of concentrated winding machines with different pole pair numbers are studied, and the results are compared with the corresponding properties of integral slot winding machines. The thesis introduces a new practical permanent magnet motor type for industrial use. The special features of the machine are based on the option of using concentrated winding open slot constructions of permanent magnet synchronous machines in the normal speed ranges of industrial motors, for instance up to 3000 min-1, without excessive rotor losses. By applying the analytical equations and methods introduced in the thesis, a 37 kW 2400 min-1 12-slot 10-pole axial flux machine with rotor-surfacemounted magnets is designed. The performance of the designed motor is determined by experimental measurements and finite element calculations.

Permanent Magnet Synchronous Machine for Parallel Hybrid Vehicle

The aim of this thesis is to describe hybrid drive design problems, the advantages and difficulties related to the drive. A review of possible hybrid constructions, benefits of parallel, series and series-parallel hybrids is done. In the thesis analytical and finite element calculations of permanent magnet synchronous machines with embedded magnets were done. The finite element calculations were done using Cedrat’s Flux 2D software. This machine is planned to be used as a motor-generator in a low power parallel hybrid vehicle. The boundary conditions for the design were found from Lucas-TVS Ltd., India. Design Requirements, briefly: • The system DC voltage level is 120 V, which implies Uphase = 49 V (RMS) in a three phase system. • The power output of 10 kW at base speed 1500 rpm (Torque of 65 Nm) is desired. • The maximum outer diameter should not be more than 250 mm, and the maximum core length should not exceed 40 mm. The main difficulties which the author met were the dimensional restrictions. After having designed and analyzed several possible constructions they were compared and the final design selected. Dimensioned and detailed design is performed. Effects of different parameters, such as the number of poles, number of turns and magnetic geometry are discussed. The best modification offers considerable reduction of volume.