Yongjian Li

TL;DR: In this paper, a 3D magnetic property model of soft magnetic composite material called the Della Torre, Pinzaglia and Cardelli (DPC) model is presented.

Abstract: This paper investigates the nonlinear model of the permanent magnet synchronous machines (PMSMs) In order to incorporate the structural and saturation saliencies, two parameters are defined to indicate the saturation ratios An analytical model is derived and the inductance matrix is expressed in both stationary and rotating reference frames, respectively An incremental inductance measure system is established, on which a real PMSM is tested and numerically simulated The nonlinear inductance matrix is deduced and expressed by a nonlinear function, regressed from the experimental collected data Based on the magnetic parameters observed from the prototype, the estimated inductance curves are compared with the experimentally measured curves Finite Element Method (FEM) is also applied to verify the developed mathematic model Finally, simulations and experiments are carried out to verify the proposed model The results show that the proposed method can be applied to analytically express the machine nonlinearity

TL;DR: In this article , a derivative free methodology for TO based on affine transformations and Boolean operations is proposed, which selects the basic structures to constitute a new topology, and the numerical result has validated the proposed method.

TL;DR: In this paper, an elemental operator with biaxial anisotropy was introduced to simulate the scalar hysteresis phenomenon of the ferromagnetic materials, and the equilibrium position of the magnetization for the elemental operator can be determined by energy minimization.