Electric motor applications such as Hybrid Electric Vehicles (ITV), wind power generation or special case factory automation systems require machines featuring low speed at high torque characteristics. This is precisely the key feature of Vernier machines. Moreover, implementations mentioned typically need control structures so several recent references regarding modelling of such machines can be noted. However, these modelling suffer from targeting on a special machine type only and also disregarding power flow aspect. In order to overcome these problems this paper suggests power flow modelling for HB-type and PM-type Vernier machines based on a generic electric machine model. Such like modelling enables easy comparison of different motors via parameter set exchange and use of diverse members of the power flow modelling tool family.