Design and analysis of magnetic geared permanent magnet machine considering loss reduction

This paper proposes and analyzes a loss-reduction-oriented design method for magnetic-geared permanent-magnet (MGPM) machines of the 5.5 kW class. It discusses the several ways in which losses can be reduced and thereby the efficiency of MGPM machines can be improved. In this study, the MGPM machine outperformed permanent magnet synchronous machines across the entire range of output power and efficiencies.