Affiliations: [a] Intelligent Mechatronics Research Center, Korea
Electronics Technology Institute, Gyeonggi-do, Korea | [b] Department of Electrical Engineering, Kunsan National
University, Gunsan, Korea | [c] Department of Electrical Engineering, Sunchon National
University, Sunchon, Korea
Correspondence:
[*]
Corresponding author: Se-Hyun Rhyu, Intelligent Mechatronics
Research Center, KETI, Gyeonggi-do 203-101, S. Korea. Tel.: +82 32 621 2848;
Fax: +82 32 621 2855; E-mail: rhyush@keti.re.kr
Abstract: This paper investigates the performance of the line start permanent
magnet (LSPM) motor which needs a high efficiency characteristic in a wide
operation region. LSPM motor's performance indexes, such as efficiency, motor
current, load angle and synchronous torque, have complex relationship with each
other according to the main and auxiliary windings distribution, and the
selection of running capacitor. The output characteristics can be defined by
the winding structure which is calculated by d-q equivalent circuit and finite
element method. The efficiency characteristic is verified by simulation as well
as by experiment on the designed LSPM motor. From the results, we show that the
redesigned model considering the winding structure and capacitor matching has a
wide operating region.
Keywords: Line start permanent magnet(LSPM) motor, compressor, efficiency
