AbstractThe advances in inverter drive technology and permanent magnet materials have enabled the application of permanent magnet synchronous machines (PMSMs) to various fields. PMSMs are rapidly spreading in their applications with their advantage of high efficiency, which is highly needed in many applications in recent years. Although there have been standardized measurement methods of the machine parameters for synchronous machines, they are not intended to apply to PMSMs. Therefore, several new measurement methods suitable for PMSMs have been proposed. This paper presents a review and analysis of these methods. Copyright © 2007 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.