Multistage topology optimization of induction heating apparatus in time domain electromagnetic field with magnetic nonlinearity. Issue 3 (10th May 2019)

• Record Type: Journal Article
• Authors: Masuda, Hiroshi; Okamoto, Yoshifumi; Wakao, Shinji
• Is Part Of: Compel. Volume 38:Issue 3(2019)
• Page Start: 1009
• Page End: 1022
• Publication Date: 2019-05-10
• Subjects: Induction heating -- Eddy currents -- Topology optimization -- Skin effect -- Design optimization methodology -- Magnetic nonlinearity; 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-10-2018-0386
• Languages: English
• ISSNs: 0332-1649

Abstract

Abstract : Purpose: The purpose of this paper is to solve efficiently the topology optimization (TO) in time domain problem with magnetic nonlinearity requiring a large-scale finite element mesh. As an actual application model, the proposed method is applied to induction heating apparatus. Design/methodology/approach: To achieve TO with efficient computation time, a multistage topology is proposed. This method can derive the optimum structure by repeatedly reducing the design domain and regenerating the finite element mesh. Findings: It was clarified that the structure derived from proposed method can be similar to the structure derived from the conventional method, and that the computation time can be made more efficient by parameter tuning of the frequency and volume constraint value. In addition, as a time domain induction heating apparatus problem of an actual application model, an optimum topology considering magnetic nonlinearity was derived from the proposed method. Originality/value: Whereas the entire design domain must be filled with small triangles in the conventional TO method, the proposed method requires finer mesh division of only the stepwise-reduced design domain. Therefore, the mesh scale is reduced, and there is a possibility that the computation time for TO can be shortened.