Development of a synchronous reactive machine with high specific indicators for industrial electric drives

The use of an energy efficient electric drive affects various areas of production. The relevance is growing every year, thus replacing old equipment with modern is a matter of time and pace of modernization. So in the industrial production of shipbuilding, there is a question of modernizing propulsion plants by using an electric drive with high specific performance. Very tough conditions are imposed on this power plant: a fairly high efficiency and high power, with relatively small weight and size indicators. Thus, the choice fell on the use of a synchronous reluctance motor using high-temperature superconductors. To maintain the superconducting state of HTSC elements, a cryogenic facility is required. With the conditions of operation and operation of cargo ships and icebreakers, the installation should be simple, and the material for cooling should be available. In this case, liquid nitrogen (77 K) has good qualities, because to create it, only access to air from the environment is necessary. The HTSC elements on which the SRM is designed must pass into the superconducting state at the boiling point of liquid nitrogen. This design of the electric drive will allow not only to reduce the weight and dimensions of the propulsion unit (the Azipod power plant system), but also to maintain the overload capacity, ensuring reliable operation of the drive over the entire period of time and modes of operation of the vessel.