A novel design methodology for fixed-shaft hybrid powertrain with a single-motor

Hybrid power configuration has two kinds of power sources, how to design the configuration to couple the energy of the two power sources is an important part of the development of hybrid power technology. In the systematic design scheme of hybrid power, most scholars focus on the design of planetary gear hybrid power configuration, but lack of systematic design scheme of fixed-shaft hybrid power configuration. In this paper, based on the equivalent tree graph method, the fixed-shaft hybrid configuration is transformed into the corresponding tree graph representation, and all possible configurations are generated by the combination of the trunk, branches and leaves. Add the corresponding design constraints, use Matlab to realize automatic generation and screening, and finally obtain the required configuration after specification. The configuration is verified in the Simulink & Amesim co-simulation environment. The results show that the proposed single-motor fixed-shaft hybrid power configuration has certain advantages in economy compared with the traditional P2 and P3 configurations, and its dynamic performance is the same as that of P2 configurations and superior to P3 configurations.