Analysis and Design of a Transverse-Flux Dual Rotor Machine for Power-Split Hybrid Electric Vehicle Applications

Abstract

A novel compound-structure transverse-flux permanent-magnet synchronous machine (CS-TFPMSM) is proposed in this paper, which is used in hybrid electric vehicles (HEVs) to fulfill the power-split function. The key component of the CS-TFPMSM is a brushless transverse-flux dual rotor machine (TFDRM). The TFDRM originates from the transverse-flux machines, and is capable of speed adjustment between the transverse-flux rotor and the permanent-magnet rotor without using any brushes. The structure and principle of the TFDRM are described. The torque equations of the TFDRM are deduced, which are different from those of traditional machines. Based on the investigation, the TFDRM tends to have high leakage and a poor power factor. The method to obtain high power factor is discussed. The back electromotive force (BEMF) and torque of the TFDRM are simulated with the variation of parameters, such as pole-pair number, width of the permanent magnets (PMs), and so on. A prototype of a 10kW TFDRM is designed.

Design and analysis of a dual‐mode flux‐switching doubly salient DC‐field magnetless machine for wind power harvesting

“…In many years, the electromagnetic field analysis has always been one of the most accurate and convenient tools to perform the electric machine analysis. Basically, it can be categorized into two major subsidiaries, namely the analytical field calculation [19] and the numerical field calculation [20]. To model the machine performances, the electromagnetic field equation is described as [4]:…”

Design and Analysis of a Cost-Effective Magnetless Multiphase Flux-Reversal DC-Field Machine for Wind Power Generation

“…In general, it can be classified into two major categories, namely the analytical field calculation [26] and the numerical field calculation [27]. To perform the machine modeling, the electromagnetic field equations are governed by [6] ⎧ ⎨ ⎩ Ω :…”

A Magnetless Axial-Flux Machine for Range-Extended Electric Vehicles

“…Electromagnetic field analysis has been widely applied for the design of electric machines, and it can be basically categorized as the analytical field calculation [30] and the numerical field calculation [31]. In this paper, 3D-FEM is employed for the analysis of the proposed AF-DSDC machine performance [24,30].…”

“…In this paper, 3D-FEM is employed for the analysis of the proposed AF-DSDC machine performance [24,30]. The magnetic solver used to perform the finite element analysis for the proposed machines is the JMAG-Designer and each simulation process takes more than 10 h using a high-performance PC.…”