Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Mathematical model of gare DC machine with three-phase excitation winding on rotor D.K. KOKHREIDZE Based on the theory of electrical machines with controllable semiconductor switch are received vector (complex) of equations averaged values, combined with the complex transformation of variables for gate machines with three-phase excitation from the rotor side. On the stator of machine is controlled thyristor switch sensor. Three-phase excitation winding is connected in star and is powered by an AC voltage. From the vector equations are set up scalar equations of machine in the convenience form for solutions by computer in order to research electromechanical transient modes. At constant rotor rotational velocity the vector equations are solved by an operator method and are obtained the expressions of instantaneous values of anchor and winding current. Due these obtained expressions for the steady state values is possible to construct an operational characteristics of machine in motor, as well as in generator mode. The considered gate machine is possible to successfully apply as an electromechanical transducer in the system of automated electric drive. Keywords: controlled switchboard, stator, rotor, valve machine, rotor position sensor, thyristor, electromagnetic torque. Contacts: E-mail: dkokhreidze@mail.ru Pp. 18-25.