Modern society is inseparably linked with electrical energy utilization in many areas of life and activities. Fleet and its transport infrastructure equipped with an electric equipment of various degree of complexity is not an exception. Currently, hundreds of thousands of commercial, fishing, passenger and other ships are operational and perform their functions. Technical perfection of their production mechanisms and technological processes being implemented are largely determined by the perfection of the actuator and degree of automation. The advantages of electrical energy, creation of advanced enough electromechanical converters and the development of control systems has led to the introduction of automated electric drives, the main part of which are electric motors. The article presents some results of the performed researches on widely used three-phase asynchronous motors, with the aim of improving their energy efficiency.