Reduced Magnet Designs and Position Self-Sensing Control Methods of Flux-Intensifying Permanent Magnet Synchronous Machines Nissan Motor Company Limited

Format:

Conference/Event

Author/Creator:

Tamura, Tamura, author.

Contributor:

Limsuwan, Natee

Lorenz, Robert

Yu, Chen-Yen

Conference Name:

SAE 2012 World Congress & Exhibition (2012-04-24 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2012

Summary:

This paper presents advanced and cost-reducing technologies of a motor drive system with reduced permanent magnets but without a position sensor. The key enabler is the integration of novel designs of flux-intensifying interior permanent magnet synchronous machines (FI-IPMSMs) and position self-sensing control technologies. In this paper, we focus on two advantages of FI-IPMSM over conventional flux-weakening interior permanent magnet synchronous machines (FW-IPMSMs). The first benefit is that thinner magnets are possible and there is less concern for demagnetization because of its significantly smaller flux-weakening current. This paper presents two design examples of FI-IPMSMs, one of which has not only smaller magnets but also similar power conversion capability. The second advantage is reduced saturation and cross-saturation effect, which leads to improved position self-sensing capability. However, even in the FI-IPMSM, non-ideal effects of both machine and inverter limit the position estimation accuracy. Therefore, this paper includes experimental evaluation of decoupling methods to improve position estimation accuracy

Notes:

Vendor supplied data

Publisher Number:

2012-01-0345

Access Restriction:

Restricted for use by site license