Three-phase coil configuration method of a bearingless slice motor

Non-Contact 3-Phase Coil Motor Configuration

This technology relates to a method for configuring three-phase coils. Specifically, it concerns a method for configuring three-phase coils in a bearingless motor that allows for determining a bearingless three-phase coil structure using the minimum number of coils through mathematical modeling.

As the adoption of electric vehicles accelerates and interest in energy conservation and environmental protection grows, the demand for energy-saving, high-efficiency motors is increasing. However, conventional motor systems are the components that fail first due to friction between rotor parts; to overcome this, non-contact support motors have been developed. This technology aims to present a generalized three-phase coil configuration method for the radial levitation of a bearingless slice motor as a method to minimize harmonic distortion in non-contact support motors.

This technology offers the advantage of presenting a generalized three-phase coil configuration for the radial levitation of a bearingless slice motor, and in particular, provides an organized determination method for coil configurations with various slots.

Non-Contact 3-Phase Coil Motor Configuration * Derivation of the magnetomotive force equations acting on the three-phase levitation windings and each slot for modeling the three-phase coil structure of a bearingless motor

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Key Features:

• Non-Contact 3-Phase Coil Motor Configuration * Derivation of magnetomotive force equations for the three-phase levitation winding and the magnetomotive force acting on each slot for modeling the three-phase coil structure of a bearingless motor.
• Derivation of the ideal magnetomotive force vector for a preset force per slot from the magnetomotive force equation.
• Derivation of the minimum solution for the magnetomotive force vector Ax=b after transforming the magnetomotive force vector equation into a matrix Ax=b.
• Provide an effective design method to determine a bearingless three-phase coil structure using the minimum number of coils.

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