Permanent magnet dual mechanical port machine design for hybrid electric vehicle application

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 application, dasiaratedpsila power and torque have different meanings from those in fans and pumps. In this paper, a new method to define the DMP machine specifications is proposed. The interaction between different flux loops is analyzed by FEA. A DMP machine prototype is developed. Experiments conducted verify the design.