Soustava hybridního vozidla s axiálním měničem výkonu

Abstract

This thesis deals with the compact and efficient axial flux arrangement of the rotary converter for hybrid electric vehicles. Main purpose of the proposed solution is to enable the internal combustion engine working in its area of maximal efficiency throughout the whole operating time to satisfy minimal fuel consumption and lower production of harmful emissions. The AFRC unit is composed from permanent magnet synchronous and induction machine having two different rotor types affixed to the input and output shaft. Selected double rotor arrangement enables to vary both the speed and the torque between the input and output shaft, hence the transferred power. The design of machine components is based on the radial air gap arrangement of induction and permanent magnet synchronous motors utilizing the idea of constant magnetic circuit volume for dimensions conversion. Electro-mechanical parameters of converted axial flux machines including dimensions, air gap sizes, materials, slots, winding, squirrel cages and permanent magnet’s parameters are then optimized using the FEM analysis in order to achieve maximal efficiency of the AFRC unit. The experimental results chapter contains the waveforms of most important mechanical and electrical values in dependency on speed, output power, slip or load angle for optimized AFRC unit as well as the 3D models and visualization of magnetic flux density in particular parts of the AFRC unit. The design of AFRC laboratory prototype utilizing fabricated axial flux induction machines and discussion of constructional possibilities and implementation issues are presented in the concluding chapter of this dissertation.