Hybrid simulation approaches for induction machine calculation. Issue 5 (3rd September 2018)

• Record Type: Journal Article
• Authors: von Pfingsten, Georg; Nell, Martin Marco; Hameyer, Kay
• Is Part Of: Compel. Volume 37:Issue 5(2018)
• Page Start: 1744
• Page End: 1754
• Publication Date: 2018-09-03
• Subjects: Induction machine -- Finite element analysis -- Equivalent circuits -- Analytic machine models -- Model coupling; Electrical engineering -- Data Processing -- Periodicals; Electrical engineering -- Mathematics -- Periodicals; Electrical engineering -- Periodicals; Electronics -- Data Processing -- Periodicals; Electronics -- Mathematics -- Periodicals; 621.3
• DOI: 10.1108/COMPEL-01-2018-0015
• Languages: English
• ISSNs: 0332-1649

Abstract

Abstract : Purpose: Induction machines for traction applications are operated at working points of high ferromagnetic saturation. Depending on the working point, a broad spectrum of harmonic frequencies appears in the magnetic flux density of induction machines. Detailed loss analysis therefore requires local and temporal highly resolved nonlinear field computation. This loss analysis can be performed in the post processing of nonlinear transient finite element simulations of the magnetic circuit. However, it takes a large number of transient simulation time steps to build up the rotor flux of the machine. Design/methodology/approach: In this paper, hybrid simulation approaches that couple static FEA, transient FEA and analytic formulations to significantly decrease the number of simulation time steps to calculate the magnetic field in steady state are discussed, analyzed and compared. Findings: The proposed hybrid simulation approaches drastically decrease the simulation time by shortening the transient build-up of the rotor flux. Depending on the maximum error of the rotor flux linkage amplitude compared to the steady state value, a reduction of simulation time steps in the range of 55.5 to 98 per cent is found. Originality/value: The presented hybrid simulation approaches allow efficient performing of the transient FE magnetic field simulations of induction machines operated as traction drives.