In this paper a new generation of electrical machine will be introduced. This type of machine consists of a stator and two rotors. It has two mechanical ports and two electrical ports. Because of the structure of this machine, it is named Dual Mechanical Port (DMP). As DMP has higher number of ports, it is more flexible and has more operation modes in comparison with previous machines. It also has some exclusivity such as existence of two air gaps and two rotational parts with dependent speed and torque. In this paper the structure of this new machine has been inspected and simulated model has been presented.