Design of a Fast Characteristics Measurement System for Permanent Magnet Motors

• Main Authors: Chien-YuWu, 吳建諭
• Other Authors: Mi-Ching Tsai
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/48291686645391639669

碩士 === 國立成功大學 === 機械工程學系碩博士班 === 98 === Permanent magnet motors are highly demanded in industry for their distinct advantages such as high efficiency and small volume. For the purpose of quality management, measurement of motor characteristics is necessary to ensure the performance of motors. The traditional testing system, which requires long testing times, is unable to meet the industry’s needs for quick fabrication. Therefore, this thesis proposes a fast characteristics measurement system for permanent magnet motors, which is suitable for industry’s high production rate demands. Four types of IEEE standard test procedures were compared in this thesis, of which the most beneficial result was obtained from the measurement system. The definition of a new permanent magnet motor model with power loss condition was redefined, which is produced by the energy transformation. A novel technique for estimating the motor parameters, e.g., back-EMF constant, torque constant, torque loss, speed loss and inertia, was proposed. The motor characteristics can be calculated with the motor parameters and measurement data. The measurement system, whose interface is programmed by LabVIEW, possesses the function of deviation count and error logic. Three types of permanent magnet motors were utilized to verify the feasibility of the measurement system in the experiment. The effectiveness of the presented measurement system was verified as valid by comparing the estimated result with that of other measurement systems.