Two-dimensional axial electric machine-generator

FIELD: electricity.

SUBSTANCE: invention relates to electrical engineering and may be used as electromechanical converter of mechanical power supplied to the mechanical input of the machine and electrical DC power supplied to the other electrical input of the machine to the total electrical AC power. The two-dimensional axial electric machine-generator contains armature with winding and brush-commutating set of DC machine. The rotor is implemented with squirrel cage winding. The armature and rotor can freely rotate with regard to each other and are axial. In addition, AC generator winding is coiled in the armature grooves with the output being connected to AC mains by means of the three contact rings and three brushes.

EFFECT: summation and conversion of mechanical power, for example wind power, and electrical DC power, for example solar power supplied from photoelectric converter, to electrical power of phase direct current but with more stable output parameters as compared to conventional electromechanical converters.

1 dwg

 

The invention relates to electrical engineering and can be used as an Electromechanical transducer mechanical energy supplied to one (mechanical) input machine, and electric power of direct current, at the same time supplied to the other input (electrical), total electrical energy of alternating current.

Known rotary DC amplifier (Kopylov I.P. Electric machine M.: Energoatomizdat, 1986, s-333), which increased electric power of direct current due to the applied mechanical energy.

However, this machine, being on the principle of steering electric power DC due to mechanical energy, cannot operate as an alternator, which converts two dissimilar source of energy, because of its purpose, because it is essentially an Electromechanical energy Converter DC.

A prototype of this invention is the input electrical machine (Patent RF №2091967, 1997, bull.№27, the authors Krasavin CENTURIES, Hitova T.B., Gitow KAPYSHEV).

Input electrical machine consists of laminated armature cores and the brush-commutator machine DC machine, placed concentrically in the annular laminated stack magnetophon the d of the rotor winding type rotor windings of asynchronous machines (for example, squirrel cage or wound rotor), and shrunk into the body, with the possibility of rotation around the laminated armature.

However, such a machine can only operate in motor mode, as a mechanical power amplifier or as a DC generator, which sharply limits the scope of application this machine.

In some cases, for example in alternative energy, when you integrated the use of two renewable energy sources (RES) (e.g., Solar and wind with inherent features is uneven and the stochastic nature of the flow of energy within a power system design of the Electromechanical energy Converter, which could convert two dissimilar kinds of energy, producing output total electrical energy of alternating current. The need for this type of Converter is the modern requirements of unconventional energy to the Electromechanical energy converters. Thus, in alternative energy has now developed the practice of traditional (classical) energy converters, generators, AC and DC, which convert one kind of energy (Solar, wind and others) into electricity.

This from retina solves the problem of summation and transformation of mechanical energy (for example, wind energy and electric energy constant current (for example, solar energy coming from photovoltaic cells) into electrical energy three(or more)-phase alternating current with a more stable electrical energy output than in the case of the traditional Electromechanical energy converters.

This is achieved by two-dimensional axillae electrical machine generator containing the armature winding and brush-collector machine DC machine and the rotor squirrel cage winding type squirrel cage, having the ability to rotate freely relative to each other, the rotor and the armature is made of the axial and in the slots of the armature additionally laid generator winding of an alternating current, the output of which is by means of three contact rings and three brushes connected to AC power.

1 shows a General view (in section) proposed a two-dimensional axial electric machine is a generator. Two-dimensional authors called machine based on well-established in the literature terminology: the machine has two rotating parts and two degrees of freedom - such machines in the world practice is called two-dimensional.

Two-dimensional axial electrical machine generator contains the anchor 1 axial design with coil 2, is laid in the grooves, face the howling collector 3 with brushes 4, connected to the wire 5, and additionally laid in the slots of the armature of the generator three-phase winding of the AC-9. Laminated axial magnetic rotor 10 in the slots which are stacked winding 11 by type axial rotor windings of asynchronous motors with squirrel-cage rotor. The winding 9 is connected to the rings 6, isolated from the body dielectric gasket 8 and the brushes 7 are connected with a network of customers with three-phase alternating current. Shields 12 with bearings 13, 14 and shaft 15 to provide axial location of the anchor 1 and the rotor 10 and the possibility of their simultaneous rotation. The shaft 16 directly connected with the rotor, provides the ability to supply mechanical energy to the rotor from the outside.

Two-dimensional axial electrical machine generator works as follows (figure 1). When applying a constant current (e.g., photovoltaic cells) through the brushes 4 and the collector 3 winding 2 anchor 1 is flown shock. This creates a magnetic flux of the reaction anchor fand. If the shaft 16 together with the rotor 10 and the coil 11 will come into rotation under the action of some externally applied moment (e.g. wind turbines), then under the action of the magnetic flux fandin the winding 11, as in an ordinary winding of an induction motor, induced EMF and electric that is, create its own magnetic field rotor fp. When the interaction between flows of fandand fpanchor the machine will come up in the rotation frequency nand.

As the field produced by the rotor winding fprotates in the opposite direction to the direction of rotation of the rotor at the same speed in space relative to the brushes motionless, therefore, in the air gap, there is a fixed field, which is the result of the addition of fields reaction anchors fandand rotor fp. If there motionless in space of the magnetic field and rotating parts in it design it can be used for the generation of electric power of alternating current.

To this end in the slots of the armature stacked three-phase (or more depending on how many phase system voltages need to get) generator winding AC 9, the output of which is with three slip rings 6 and three brushes 7 is connected to a network of consumers alternating current.

In a three-phase winding 9, rotating in a stationary magnetic field created by the flow fandand fpaccording to the law of electromagnetic induction, induced EMF is equal to

where ωp- angular velocity of rotation of the rotor, ψk- magnetic flux linkage of the coil winding 9. In the described processes happening is the summation of mechanical and electrical energy to the DC input, conversion and output on the output total electrical energy of alternating current.

Axial machine design allows you to maximize the moment of inertia of the rotor at minimum cost of active materials, which is important for smooth jumps receipt of mechanical energy, for example, when a sudden wind gusts, i.e. axial rotor plays the role of the inertial drive mechanical energy.

Experimental studies have shown promising applications of generators of this type in the Autonomous power supply system, based on the integrated use of alternative renewable sources of energy, such as Solar and wind within the same grid.

Two-dimensional axial electric machine is a generator containing the armature winding and brush-collector machine DC machine and the rotor squirrel cage winding type squirrel cage, having the ability to rotate freely relative to each other, characterized in that the rotor and the armature is made of the axial and in the slots of the armature additionally laid generator winding of an alternating current, the output of which is by means of three contact rings and three brushes connected to AC power.



 

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