FIELD: electricity.
SUBSTANCE: invention refers to low-speed high-moment electric motors, electric drives and electric generators; it also deals with the design of electric machines with contact rings of any powers - from tenth parts of W to hundreds of kW, and can be used in automation systems as traction controlled and non-controlled electric drives, electric generators, and multi-phase power supplies with electric current. The proposed modular electric machine includes stator the armature core of which consists of isolated electrotechnical steel sheets with high magnetic permeability and has salient poles with coil m-phase winding of armature, each coil of which is arranged on the appropriate salient pole of armature, one per a pole, and rotor containing charged inductor core made of electrotechnical steel sheets with high magnetic permeability; the above inductor has salient poles and coil excitation winding, and each coil of which is arranged on the appropriate salient pole of inductor, one per a pole. Electric connection of excitation winding with source of constant (rectified) voltage is performed through sliding contact by means of brush-and-spring assembly with brushes. When direct (rectified) current flows via excitation winding of inductor, alternating polarity of N - S magnetic inductor poles appears in air gap. At that, there are certain ratios between the number of salient armature poles, number of phases of m-phase armature winding, number of salient poles in armature module phase, number of modules and number of salient poles of inductor.
EFFECT: high energy data, high specific torque moment on the shaft in electric motor mode and high specific power in electric generator mode of modular electric machine owing to better use of its useful capacity, and available brush-and-contact assembly allows feeding the excitation winding of inductor with considerable direct current and thus increasing electromagnetic and heat loads, as well as smoothly controlling the output parameters of electric machine; besides, there are no restrictions regarding the design of the above high-duty machines with large overall dimensions, as well as their assembly in comparison to similar electromagnetic machines.
6 cl, 5 dwg
