FACE-MOUNTED PERMANENT-MAGNET TORQUE MOTOR Russian patent published in 1999 - IPC

FIELD: valve-type DC motors. SUBSTANCE: motor is provided with additional magnets mounted on hubs of rotor shaft. Its magnetic cores are placed at ends of extreme magnets. Interconnected electric blocks also connected to stator are alternating with magnets. They have plate and heat sink whose slots accommodate electric blocks to form toroidal gap. Alternating magnetic fields are opposing each other. Leads of rotor position detectors and those of coil sections in rows of electric blocks are connected in series, in parallel, or in series- and-parallel and on external side of electric blocks they are connected to control unit and to power supply. Coils may be wound of insulated strips made of electricity conducting nonretentive material. EFFECT: reduced size and improved reliability due to high specific power and low thrusts on shaft bearings. 2 cl, 5 dwg