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Characteristics of a Coaxial Motor Driven by Compound Current
Technical Paper
2005-01-3755
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper describes the magnetic circuit design of a coaxial AC motor system, comprising one stator and two rotors, and the test results obtained for a prototype motor. The rotors of the motor share the same stator core and coils, and each rotor uses its magnetic part as a yoke. Magnetic flux linkage of each rotor was determined in consideration of the maximum torque/power conditions and maximum motor speed. Finite Element Method were utilized to design a magnetic circuit for achieving the magnetic flux linkage specification. Tests conducted with a prototype motor showed that the torque characteristics can be divided into magnetic torque and reluctance torque, just like an ordinary IPM motor. Each torque level was improved through field-weakening control. The combined torque obtained when the two rotors were driven simultaneously approximately equaled the sum of the individual torques when the rotors were driven independently. The optimum current angle of each rotor when driven simultaneously nearly coincided with the values when the rotors were driven separately.
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Citation
Arimitsu, M., Naruse, Y., Minagawa, Y., Nakano, M. et al., "Characteristics of a Coaxial Motor Driven by Compound Current," SAE Technical Paper 2005-01-3755, 2005, https://doi.org/10.4271/2005-01-3755.Also In
References
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- Minagawa Y. Nakano M. Arimitsu M. Akatsu K. “New Concept Motor with Dual Rotors Driven by Harmonic AC,” 2002 SAE Powertrain & Fluid Systems Conference & Exhibition San Diego.USA
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- Arimitsu M. Nakano M. Minagawa Y. Maeda S. Furuse H. Sato T. “Compound current control on Motor-Generator system for HEV,” 2001 JSAE Annual Congress(Autumn) 2001