Sizing and Parameter Study of Compressor Case-Mounted Permanent Magnet Synchronous Motor for Hybrid Electrical Compressor Integration

This paper discusses the sizing and parameter estimation of a case-mounted permanent magnet synchronous motor designed for integration into a counter-rotating hybrid electrical compressor. The motor features a toroidal winding stator and a sinusoidal Halbach array permanent magnet rotor. The structure of the motor is modeled as several 2D hollow cylindrical layers for analysis and simulation. The motor model is developed with a focus on estimating parameters such as motor mass, power, and efficiency. Based on this model, a motor design algorithm is created to generate a motor design map. Serving as part of a multidisciplinary design approach, the electrical motor design map is generated as a look-up table for interfacing with other design disciplines, such as aerodynamic design, mechanical design, and propulsion system design. Therefore, motor design parameters are selected with particular emphasis on geometry and mechanical performance. The full factorial experimental method is applied to create the design map. Finally, comparative studies are conducted using the controlled variable method to analyze typical relationships between motor geometry, mass, power, efficiency, and design parameters.