Electric motors serve essential roles across industrial, commercial, and residential sectors, making them fundamental in global energy consumption. Industries, being the largest energy consumers, heavily rely on electric motors, which alone utilize over 75% of industrial energy. Thus, improving motor efficiency and minimizing power loss are crucial for industrial production and energy systems. Line-start permanent magnet synchronous motors (LSPMSM) offer higher efficiency compared to traditional induction motors, supported by the widespread use of rare-earth permanent magnets known for their strong magnetic properties. However, the susceptibility of rare-earth magnets to demagnetization directly impacts LSPMSM motor performance. This study investigates severe operating scenarios of a direct-start synchronous machine with a V-shaped magnet configuration, aiming to evaluate demagnetization phenomena using the finite element method.