Abstarct: Abstract The optimization process of the Salient-pole Permanent Magnet Synchronous Machines (SPPMSMs) is an attempt to improve efficiency, proper electromagnetic behavior, better performance as well as proper operating condition for the SPPMSMs while reducing costs. Owing to the many advantages of SPPMSMs such as high efficiency, high power density, low noise and vibration, make the aforementioned machines are applicable in industrial, commercial, and also home applications. There are many techniques to design SPPMSMs with various pros and cons. However, with respect to the technology required to manufacture the sheet of the stator and rotor of these machines and also, the specific rotor pole-shoe shape, makes limited the research in the literature. Furthermore, few investigations are performed to manufacture a prototype of these machines, and most of the research was limited to academic activities. In this Thesis, at the first step, a 1.5kW 4-pole, 36-slots SPPMSM is designed. Following, a three-step skewed pole shoe method named: a) Right-skewed pole-shoe shape, b) Left-skewed pole-shoe shape, and c) Fully-skewed pole-shoe shape for re-design and optimizing of the 1.5kW 4-pole, 36-slots SPPMSM to improve parameters such as output torque, cogging torque, torque ripple, back-EMF and airgap flux density coupled with the improvement the electromagnetic and operation condition of the 1.5kW 4-pole, 36-slots SPPMSM is presented. The Finite-element Method (FEM) results show in the three-level proposed model, the fully-skewed pole-shoe shape is proper and leads to improving the performance of the initial SPPMSM design. The significant results obtained are: • Average output torque is increased by 12.65%, • The torque ripple is decreased by 16.03%, • The air gap flux density is increased by about 3.33%. • The Back-EMF voltage in the initial design of the machine is equal to 155.34V, and in the optimized model is 155.30V, i.e. a 1.27% increase, reduced by 19.44%, compared to the initial design. The related FEM results validated the electromagnetic performance of the finally designed 1.5kW 4-pole, 36-slots SPPMSM at any predicted operation conditions. The proposed method presented in this thesis can aid researchers and electrical machine designers associated with the SPPMSMs design and manufacture.