期刊
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
卷 58, 期 3, 页码 3522-3532出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIA.2022.3156921
关键词
Rotors; Resistance; Temperature measurement; Electrical resistance measurement; Stator windings; Iron; Inductance; Efficiency maps; induction machines (IMs); standard test procedures; testing; transport electrification; virtualization
This article proposes a methodology for computing efficiency maps of induction machines in wide torque-speed ranges. The modeling approach is based on the equivalent circuit of the machine, and the circuit parameters are determined through no-load and locked-rotor tests.
The extensive electrification process that is taking holds in several applications makes increasingly necessary the virtualization of electric components for energetic and performance assessments during the system design stage. For this purpose, this article proposes a straightforward methodology for computing the efficiency maps of induction machines (IMs) operated in wide torque-speed ranges. The modeling approach is based on the IM equivalent circuit defined in the rotor dq coordinates. The procedure allows computing a set of efficiency maps at different machine temperatures and supply voltage levels, both for motor and generator operation modes. The equivalent circuit parameters at different frequencies and voltages are determined by means of the well-known no-load and locked-rotor tests, thus including in the modeling the machine nonlinearities, skin effect and the iron losses. The proposed methodology has been validated on a 10 kW, four-pole IM. The comparison between computed and experimental efficiency maps for different operating conditions, confirm the validity of the proposed methodology.
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