A Method to Determine Direct- and Quadrature-Axis Inductances of Permanent Magnet Synchronous Motors

摘要: The equivalent circuit constants of permanent magnet synchronous motors are needed in the calculation operation characteristics, construction a control system, etc. These can be computed from data on structural form and materials. However, measurements necessary to obtain highly precise values. Methods for measurement d- q-axis inductances roughly divided into rotational standstill methods. methods have advantage that they easy carry out. it is difficult consider magnetic saturation distortion change armature winding inductance. accuracy method improved if these effects readily taken account. This paper describes measuring accurate motors. By utilizing fact EMF interference terms motor voltage equation considering inductance equal zero when rotor specific position, proposed determines both simple off-line testing. In addition, this capable taking cross-magnetic account used with testing equipment. was implemented 0.4-kW interior concentrated stator winding. validity demonstrated by comparing measured calculated results no-load on-load characteristics. © 2010 Wiley Periodicals, Inc. Electr Eng Jpn, 171(3): 41–50, 2010; Published online InterScience (www.interscience.wiley.com). DOI 10.1002/eej.20969