A magnetless rotating electric machine has an outer stator, an inner stator, and an annular rotor interposed between the outer stator and the inner stator. A plurality of outer-inner salient pole pairs are provided in the annular rotor along a circumferential direction of an annular rotor yoke. A rotor yoke coil is wound around one side of the rotor yoke and around another side of the rotor yoke along the circumferential direction with the respective outer-inner salient pole pairs sandwiched therebetween. Rectifying elements make a magnetic pole polarity of the outer salient poles and magnetic pole polarity of the inner salient poles, which are magnetized by an induced current of the rotor yoke coil caused by magnetization of the outer stator and the inner stator, identical with each other, and also make magnetic pole polarities of the adjacent outer-inner salient pole pairs opposite each other.

A motor includes a rotor used in conjunction with a stator to produce a magnetic field in the air gap having p pole pairs, wherein a single cross section of the rotor taken orthogonal to an axis of rotation comprises iron having a structure forming p teeth. The stator has at least one stator winding configured to form p pole pairs to produce a first magnetic field to rotate the rotor about the axis of rotation and configured to produce a second magnetic field of either one pole pair or p1 pole pairs to create forces radial to the axis of rotation. The at least one stator winding has two sets of terminals, a first set of terminals for carrying current that produces the first magnetic field in the air gap having p pole pairs to rotate the rotor about the axis of rotation and a second set of terminals for carrying current that produces the second magnetic field in the air gap having either one pole pair or p1 pole pairs to create the forces radial to the axis of rotation. The second set of terminals experience no motional-electromotive force when the rotor is centered on the axis of rotation.

Embodiments of the subject invention are directed to a homopolar motor and its mechanical coupling with a flywheel rotor. The homopolar motor includes a rotor and no additional bearings, shafts, gears, pulleys, etc., are required to couple the the flywheel rotor and the rotor of the homopolar motor. The homopolar motor includes a stator with a stator laminate and a number of stator pole pieces. The pole pieces generate magnetic flux across a first radial gap to rotor assembly to generate torque. Rotor assembly is coupled to and rotates with shaft which in turn rotates the flywheel rotor. The rotor assembly includes a rotor laminate stack and a field coupler. The field coupler has a top portion that rotates with the shaft and a bottom portion that attaches to a housing and remains stationary.

The invention described herein belongs to the category of electric motors and power generators and may be used, in particular, to generate electric and mechanical energy. The objective of the invention described herein is to expand the area of application, to reduce costs and to increase the specific power and efficiency of the electric machines. This electric machine comprises a rotor and a stator with winding coils and a control device. Stator winding coils are made as a system of radial and/or tangential coils connected in series and/or back-to-back; each coil has its own electric terminals. The control device can connect its electric contacts to the terminals of the corresponding stator winding coils in order to provide a chain control of electric current supply to the corresponding stator coils and thus to create, at each point in time, a pre-determined stator magnetic field in the electric machine, whether a rotating or a reciprocating one, depending on the spatial position and the magnetic condition of the rotor that performs rotating or reciprocating motions. The invention can be applied in the power industry, the transport industry, mechanical engineering, the construction industry, astronautics, and other fields of technology. 4 independent claims; 4 drawings.

An electromechanical flywheel machine includes a flywheel mass and a motor-generator having a rotor rotatable about a stationery inner stator having stator windings.

According to an aspect of the disclosure herein, a generator is provided herein. The generator includes a rotor that further includes a plurality of slots. The generator also includes a three-phase winding configured to produce a first magnetic field and an excitation winding. The excitation winding is a material filling in the plurality of slots and produces a second magnetic field. In turn, a rotation of the generator induces alternating voltage in the stator three-phase winding and the stator excitation winding excites the magnetic flux in the rotor.

This rotating electrical machine has a rotor, stator core, field windings for multiple poles, and armature windings for the multiple poles. The rotor is rotatably supported about a shaft. Convex-shaped multiple salient pole sections are formed on the outer circumference of the rotor while arranged in the circumferential direction. The stator core is provided along the outer circumference of the rotor with an air gap from the rotor. Convex-shaped multiple teeth are formed on the inner circumference of the stator core while arranged in the circumferential direction. The field windings for the multiple poles are wound around each of the multiple teeth while insulated from the field windings.

This rotating electrical machine has a rotor, stator core, field windings for multiple poles, and armature windings for the multiple poles. The rotor is rotatably supported about a shaft. Convex-shaped multiple salient pole sections are formed on the outer circumference of the rotor while arranged in the circumferential direction. The stator core is provided along the outer circumference of the rotor with an air gap from the rotor. Convex-shaped multiple teeth are formed on the inner circumference of the stator core while arranged in the circumferential direction. The field windings for the multiple poles are wound around each of the multiple teeth while insulated from the field windings.

A motor-generator utilizes a multi-part rotor encircling a stator, the rotor including a plurality of rotor segments.

A reluctance machine has a stator (3) and a rotor (1). The rotor (1) comprises an encapsulated body (17), which can rotate about an axis of rotation (15) of the rotor (1), and a plurality of flow guide segments (19). The flow guide segments (19) form poles of the rotor (1), are arranged in a circumferential direction about the axis of rotation (15), and are embedded in the encapsulated body (17).