Abstract
Planetary gear trains are complex critical components of several electromechanical systems. This paper presents a dynamic model of planetary gearbox associated to a wound rotor induction machine. The model of gearbox includes essential non-linearities such as time-varying mesh stiffness, transmission error and damping force. The proposed gearbox model is a general model and is adapted for all possible power flow configuration of single stage planetary gearbox with any number of planet gears. To evaluate this electromechanical model, a single stage planetary gearbox is monitored using electrical machine signature. Simulation results show that the electromagnetic torque and the stator current of induction machine contain rotating and related rotating frequency components as well as mesh and related mesh frequency components of a healthy planetary gearbox. The planetary gearbox, which is used in this work, consists of three planet gears with the ring gear as the input, the sun gear as the output and planet-carrier as the fix part.
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