Practical Approximation of Sheet Losses Taking into Account the Guillotine and Laser Cutting Effect

Reducing losses in electrical devices is essential for reducing global energy consumption. Losses the core of machines constitute a significant part overall losses—their share increases with number powered by PWM converters, especially high-speed machines. Limiting requires precise determination at design stage device. Achieving this goal possible thanks to numerical or analytical simulation. A necessary input process correct properties material. The sheet loss, however, changes due machining process, primarily punching. subject work develop sufficiently accurate approximation steel sheet-specific taking into account effects cutting and width given machine element wide range induction frequency. method also enables extrapolation higher frequencies relevant from point view generating machine. developed loss can be used finite simulation applying methods. technique successfully many grades non-oriented metal, provided that requirements specified are met. proposed allows us determine sample certain magnetic magnitude frequency an accuracy not worse than 4%.