ENERGY LOSS DUE TO HYSTERESIS LOOP

ENERGY LOSS DUE TO HYSTERESIS LOOP.

Definition. In a system with a magnetic field, hysteresis occurs. Ferromagnetic materials have a common characteristic called hysteresis. The hysteresis effect is a phenomenon that occurs when the magnetization of ferromagnetic materials lags behind the magnetic field. The word hysteresis means “lagging.” Magnetic flux density (B) lags after magnetic field strength, resulting in hysteresis (H)..

Definition. Hysteresis is a property of all ferromagnetic materials. where a ferromagnetic material is placed within a current-carrying coil to better grasp the notion. The material becomes magnetized as a result of the magnetic field present. Hysteresis is known as the process of demagnetizing a material by reversing the direction of the current..

Hysteresis Loop. The magnetic flux density and the magnetising field strength are represented by the hysteresis loop. The loop is created by monitoring the magnetic flux emitted by the ferromagnetic material while the external magnetising field is changed..

Hysteresis Loop. -H B Flux Densitv Retentivity Coercivitv -B Hysteresis Loop A Saturation Magnetising Force.

Hysteresis Loop. As the magnetic field is increased, the value of magnetism rises until it hits point A, which is known as the saturation point, where B remains constant. With a drop in the value of the magnetic field, there is a decrease in the value of magnetism. However, when B and H are both zero, the substance or material retains some magnetic, which is known as retentivity or residual magnetism..

Hysteresis Loop. When there is a reduction in the magnetic field towards the negative side, magnetism likewise decreases. The material is entirely demagnetized at point C. Coercive force is the amount of force necessary to eliminate a material’s retentivity (C). The cycle is repeated in the opposite direction, with the saturation point D, retentivity point E, and coercive force F. The cycle is complete due to the forward and opposite direction processes, and this cycle is known as the hysteresis loop..

Energy loos due Hysteresis. The greatest example of analysing energy loss due to hysteresis is a transformer because we know that energy is required throughout the magnetization and demagnetization processes. Energy is expanded during the magnetization and demagnetization of magnetic objects, and this expanded energy manifests as heat. Hysteresis loss is the term for this type of heat loss. Due to the continuous process of magnetization and demagnetization in transformers, energy is continuously lost in the form of heat, reducing the transformer’s efficiency..

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