PROPULSION-TRANSFORMER UNIT Russian patent published in 2013 - IPC H02K16/04 H02K17/34 

FIELD: electrical engineering.

SUBSTANCE: transformer part of the unit has the primary winding connected to three-phase network and the secondary winding connected to z-phase bar winding placed inside z groves of the transformer magnet core at one side closed by the short-circuited ring and at the other side connected to Z bars of the stator winding. Propulsion part of the unit contains asynchronous engine with disc squirrel-cage rotor located between two disc stators with bar windings electrically connected to the secondary bar winding of the transformer and from the other side by closed short-circuited rings. Bars of the secondary transformer winding are connected to Z bars of stator windings by bars used as sealed leads-in and located in a sealed bulkhead.

EFFECT: improvement of energy response and reliability of propulsion-transformer unit with simultaneous extension of its application area.

4 cl, 4 dwg