Inner Claw-Pole Stator Outer PM Rotor Small Synchronous Motor/Actuator for Vehicular Service Technologies: 3D-FEM Simulation and Experimental Tests

As vehicular modern electric technologies imply the need for ever better auxiliary services, small electric actuators with higher energy conversion performance at affordable prices are required. This paper introduces a three-phase inner claw pole ATOMET core stator with outer PM rotor synchronous actuator characterized by a modular structure with one circular shape AC coil per phase, capable to produce high torque per copper loss and enjoy a practical fabrication at reasonable cost. The core of the paper includes the key 3D-FEM validation with preliminary experimental results on a dedicated laboratory prototype at 125W, 700rpm.