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This paper present a method to calculate the d-and q-axis inductances of parallel hybrid excitation machine which takes the influence of electric excitation path and the field current into consideration. The armature inductances are the summation of inductances corresponding to the rotor magnetic path and the electric excitation path. The electric excitation path is highly effected by saturation,...
A Unified Field Dual Mechanical Machine is proposed in the paper, which features as spoke type PM arrangement. The presented machine has superior torque behavior compared with traditional type IPM machine. The d-axis current in the new machine has better utility, which make the presented machine a perfect match with the electric vehicle. The torque strengthen effect is analyzed with FEA, and the regular...
This paper presents a new full hybrid system with a PM type DMPM using a new mechanism in the decoupling of the internal combustion engine (ICE) optimal working points and the power train output shaft operation points. In this paper, the working points of this system are explained. The comparison of system efficiencies is made. The results suggest that the system proposed can obtain the same or even...
A dual mechanical port (DMP) machine is a new kind of machine with two rotors. Those in literature can be classified into independent field type, as the fact that there is no effective electromagnetic coupling between different parts in the machine. A new type of DMP machine is presented in this paper, which features as a unified field in the machine. This kind of machine can utilize d-axis current...
There are two types of permanent magnet dual mechanical port electrical machine (DMPM), namely, non-uniform magnetic-field DMPM and uniform magnetic-field DMPM. In this paper, both the equivalent-magnetic-circuit method and FEM are adopted to compare the characteristics of the uniform field DMPM to the non-uniform field DMPM such as electromagnetic coupling etc. The analysis indicates that both outer...
The dual mechanical port (DMP) machine is a new breed machine with two rotors. Because the two rotors can run at different speed, the DMP machine functions as both a pair of motors and an electrical variable transmission system. When it is used in hybrid electric vehicle, it can perform all the functions as Toyota Hybrid System does, but with more compact and integrated structure [1]. In hybrid vehicle...
A permanent magnet dual mechanical port machine (DMPM) is a compact and pure electrical solution to the hybrid electric vehicle traction, which features as two independent rotors and permanent magnets mounted on the outer rotor. The key barrier prevent the DMPM from practical usage is the existence of the brush and slipring. A way to eliminate the brush and slipring is presented in this paper, which...
Dual mechanical port electrical machine (DMPM) is a new breed of energy conversion device and can realize electrical variable transmission in HEV. In this paper, both the equivalent-magnetic-circuit method and FEM are adopted to analyze the electromagnetic coupling of one type permanent magnet DMPM, the uniform field DMPM (UMF-DMPM). The analysis indicates that the electromagnetic coupling between...
In this paper the structure and operation principles of a kind of bypass hybrid excitation synchronous motor (BHESM) are presented. Based on the conventional permanent magnet machines, two field windings are added on the machinepsilas two ends. The permanent magnet (PM) provides constant flux, and the field windings produce the variable flux. The special flux excitation pattern will make BHESM a challenging...
A dual mechanical ports electric machine (DMPM) with clutch is used as an electrical variable transmission (EVT) in hybrid electric vehicle (HEV). In this paper, the working principle and advantages of this novel converter is explained. Then a method of power parameters matching design for DMPM with clutch considering the fuel economy and power performance based on driving cycle is presented and the...
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