Experimental verification of proposed electromagnetic clutch structure for surge voltage suppression

Based on experimental time-series data, a new electromagnetic clutch structure is verified to be useful for surge voltage suppression, providing a reduction in the surge voltage of approximately 50%, in its trial production. The new structure has a metal layer with low resistivity surrounding the clutch coil, which is located between the clutch coil and the coil housing. First, we optimized the structure in order to maximize the surge voltage suppression effect. We then fabricated the optimized structure and experimentally confirmed that the surge voltage of the proposed structure is much lower than that of the conventional structure.