Electromechanical Coupled Free Vibration for Electromechanical Integrated Toroidal Drive

In this paper, based on electromechanical coupled dynamic equations of the drive system, the natural frequencies and vibration modes of the drive system are investigated. The vibration modes of the mechanical system of the drive are classified into rotational modes, planet modes and single planet modes. The vibration modes of the electrical system are classified into synchronous mode, asymmetric out-phase mode and symmetric out-phase mode. Finally, sensitivities of the natural frequencies to mechanical and electrical parameters of the drive are analytically investigated. The main influencing factors and their effects on sensitivities of the natural frequency are discussed systematically