Abstract
With the development of condenser materials, single-phase capacitor motors for domestic use have been made smaller, and the utility for it has been raised in these days. For saving electric energy consumed in motors, the authors have carried out experimental discussions on the capacitor motor. In short, with wedging of soft ferrite materials into the motor slots, the characteristics in locked, no-loaded and loaded motor have been investigated. Owing to ferrite magnetic wedges, Carter's coefficient estimated by the finite element method was reduced, and iron loss of the motor decreased. As the result, efficiency of the motor was improved about 6 % or above.
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