# Experimental Verification of Radial-Air-Gap-Type Permanent-Magnet-Free Synchronous Motor Utilizing Space Harmonics with Auxiliary Poles

> Research article (IEEJ Transactions on Industry Applications, 2015) · cited 19× · AI/ML

**Wikidata**: [openalex:W2679558005](https://www.wikidata.org/wiki/openalex:W2679558005)  
**Source**: https://4ort.xyz/entity/experimental-verification-of-radial-air-gap-type-permanent-magnet-free-synchronous-motor-utilizing-space-harmonics-with-