Research On The Application Of Brushless Double Mechanical Ports Flux Switching Permanent Magnet Motor In Hybrid Power System

In order to effectively solve the problems about environment pollution and energy crisis, new energy electric vehicle is becoming the research and development hot spot in the world. As a kind of hybrid electric vehicle, extender range electric vehicles(EREVs) receive wide attention for its characteristics of multiple working modes and longer mileage. In this paper, a kind of new brushless double mechanical ports flux switching permanent magnet motor( BDMP-FSPM motor)is proposed for EREVs applications. The proposed motor not only possesses two mechanical ports, but also inherits the advantages of conventional flux switching permanent magnet motor, offering the preconditions for multiple operational modes.The drive system of EREVs in this paper consists of the BDMP-FSPM motor and planetary gears, realizing the efficient power transmission and reasonable energy distribution. Based on actual driving cycles, many operation modes of the proposed motor and its hybrid drive topology are investigated in this paper, and the corresponding simulated and experimental results prove their feasibility and validity.At first, the classification of normal hybrid structure is introduced. Then the structure characteristics and operation principle of the BDMP-FSPM motor and its hybrid drive system are analyzed in details. Besides, the mathematical model of the motor and the planetary gears are also deduced.Secondly, the simulation mode of BDMP-FSPM motor is established by using MATLAB software to analyze the control strategy of the motor and its hybrid drive topology. Furthermore, various operational modes of the drive topology are evaluated by software.At last, a prototype of the BDMP-FSPM motor is manufactured for experimental validation. To implement driving control strategy, the hardware and software of the motor controller are designed respectively, and the corresponding experimental bench is established to obtain the dynamic performances measurements. Then, based on thisbench, a lot of experiments of the BDMP-FSPM motor and its drive topology are carried out successfully. Finally, the simulation and experiment results validate that the BDMP-FSPM motor and its drive topology have the capability of power split and combination, which can meet the requirements at various operation modes. In addition, the motor is also proved that it possesses the merits of high integration and flexible control, exhibiting bright research prospect on EREVs.