The presentation content will shows introduce the optimization design of an electrical motor for hermetic rotary compressors. This study and development are relevant to improve the performance and energy efficiency level of heating pump applications. All the detailed process of motor design, including simulation, prototype manufacture and validation tests of a single-phase induction motor (SPIM) with a permanent split capacitor (PSC) connection is explored. Different boundary conditions are evaluated using analytical software to check motor performance under such specific conditions of voltage, temperature, and load torque conditions, focusing to achieve efficiency and reliability. At the earlier stages of motor design process, the analytical model is very important to lead reliable information to an integrated optimization software, then motor parameters such as stack height, winding distribution, and capacitor values can be explored during the optimization process looking for attend efficiency requirements and all other relevant constraints.

This work address's the challenge of minimize the difference between simulation and experimental data through the use of fudge factors to better represent magnetic and thermal characteristics. Validation tests were conducted using dynamometers and calorimeters, comparing simulation results with actual motor performance data and the proposed one. The results confirmed that the optimized motor achieved significant improvements in efficiency increasing by 5.6% compared to existing designs.

The presented approach reduces the time to market and shows a method for motor design development for heat pump applications. Also the importance of coupling simulation tools with optimization software to improve the motor design process and achieve energy efficiency solutions in household appliances demand for next years.