Structural Design And Simulation Study Of Shaft Generator Based On Axial And Radial Composite Magnetic Field

In order to solve the problem of the high cost of marine fuel and cumbersome devices of ship and provide more reliable power to ship, ship shaft generator system is the future trend of ship power system. With the development of the performance of motor and the requirements of people, the composite structure motors with different structures and functions were attracted by people. Generator based on axial and radial composite magnetic field attracted the attentions of domestic and foreign scholars because of its special structure, high power generation efficiency and high power density. Based on analyzing the shaft generator system and composite structure motor, the ship shaft generator system based on generator and axial and radial composite magnetic was proposed, which improves the efficiency of system and save the problem of the limited cabin space.Firstly, the shaft generator system and the composite structure motor were introduced home and abroad, the power generation system applied to shaft generation based on axial and radial composite magnetic was put forward. Secondly, the structure and characteristics of motor were studied, the materials of stator and rotor, the appropriate motor phase, pole numbers and slot numbers were determined. Thirdly, analytic calculation method for the electronmagnetic parameters of motor was proposed. the basic relationships between electromagnetic parameters were analyzed, and the high accuracy calculating expression of inductance was obtained which laid the foundation for motor optimization design. Fourthly, the Finite Element Analysis software Ansoft Maxwell was used to optimize 2D motor design. Then the Finite Element Analysis software Ansoft Maxwell was used to 3D motor design, the final size of motor was required, and analytical method were used to verify the correctness of optimization design. Finally, the power generation system applied to shaft generation based on axial and radial composite magnetic with Z-source controlled by SVPWM and PQ achieved the boost and grid fuctions.