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In electrical machines like motors and transformers, there's a core usually made of iron or some magnetic material. When the machine runs, the magnetic field inside that core keeps changing direction (especially with AC current). But the material doesn’t instantly follow the changes—it's a bit “lazyRead more
In electrical machines like motors and transformers, there’s a core usually made of iron or some magnetic material. When the machine runs, the magnetic field inside that core keeps changing direction (especially with AC current). But the material doesn’t instantly follow the changes—it’s a bit “lazy,” like when you’re slow to get up in the morning. That lag or resistance to changing direction causes energy loss in the form of heat.
That’s what we call hysteresis loss. It happens every time the magnetic field flips back and forth. To reduce it, engineers use special materials like silicon steel or laminated cores that are better at flipping without wasting too much energy.
So in short:
See lessHysteresis loss = heat energy wasted because the core resists changing its magnetism direction quickly.