SYNCHRONOUS MACHINE Russian patent published in 2014 - IPC H02K19/38 H02K21/12 

FIELD: electricity.

SUBSTANCE: invention relates to the field of electrical engineering, in particular to synchronous machines with combined excitation. According to the given invention on the armature of the synchronous machine containing a multiphase armature winding and face laminated core with multiphase sub-excitating winding, the latter is combined with the armature winding on a part of active length of armature core and forms a part of active length of its coil. The magnetic circuit of the rotor with permanent magnets is made short, forming a free ring band on a part of active length of the armature core, where the additional ring-type magnetic circuit of claw type fixed on the rotor is installed. In a ring-type magnetic circuit in its internal ring hollow the stator-fastened magnetic circuit with a toroidal field coil is installed, which is connected to the machine control and regulation system. During the operation of the synchronous machine the sub-excitation link of claw type with the toroidal winding creates an additional regulated magnetic flux, the direction of which can be co-directional or opposite with the main flow of permanent magnets, that ensures the operation of the synchronous machine both in normal, and in abnormal modes of operations with a possibility of excitation field dampening.

EFFECT: expansion of the range of regulation of output voltage at simultaneous provisioning of possibility for excitation field dampening.

2 dwg