Dc machine |
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IPC classes for russian patent Dc machine (RU 2168835):
 
 The direct current motor / 2158465
The invention relates to the field of electrical engineering and the implementation of DC motor
 Electrodynamic engine / 2158464
The invention relates to electrical engineering and can be used as a drive rotational or translational motion
 Relationy accelerator / 2154890
 Relationy accelerator / 2154889
The invention relates to linear electric motors and can be used for acceleration of a rigid body (anchor) a relatively large mass
 Engine-propulsion electrodynamic vibrator / 2141161
The invention relates to power engineering and can be used in transport, including aircraft and space technology
 Interaction engine / 2136102
The invention relates to electrical engineering, in particular to the stepper motors, which converts electromagnetic energy into gravitational, and can be used for movement of the vehicle
 Self-excited brushless dc generator / 2124799
The invention relates to electrical engineering and can be used in the production of DC machines
 Method and device for generating electricity using low-grade heat transfer fluids / 2117884
The invention relates to energy, in particular, to the conversion of low-grade thermal energy into electrical energy
 Engine / 2115209
 Dc machine and., skibicka / 2091966
The invention relates to electric machines, DC and covers both electric motors and generators
 Single-phase non-reversing non-contact direct current motor with an axial force opposing axial loads on the shaft / 2166828
The invention relates to the field of electrical engineering, in particular to a valve actuator
 Dc electric machine / 2154335
The invention relates to electrical engineering and can be used in the design and manufacture of electrical machinery
 Non-reversing non-contact dc motor / 2152681
The invention relates to the field of electrical engineering, in particular to a valve actuator
 Magnetoelectric system electric dc machine / 2152680
The invention relates to the field of electrical engineering, in particular to electrical machines DC magnetoelectric system and an adjustable air gap between the magnets
 Multi-pole low-speed end of a synchronous electric generator / 2152118
The invention relates to electrical engineering, namely to electric machines, and relates to improvements in the design of synchronous generators, which can be preferably used to produce electrical energy in wind turbines
 The alternator / 2143169
The invention relates to electrical engineering, in particular to low-speed electric machines
 Repulsion engine / 2142192
The invention relates to electrical and electrical engineering and can be used in single-phase commutator motors of high power, which is used on electrified Railways
 Stator magneto dc machine / 2138110
The invention relates to the field of electrical engineering, in particular to the design of magneto-electric machines, DC
 Electric machine / 2131637
The invention relates to electrical engineering and in particular to electric machines
 The rotational device / 2130683
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(57) Abstract: The invention relates to electroradiographic and can be used as a constant current source and the motor in the DC drive. The essence of the invention is that the DC machine includes an armature winding and a smooth rotor separated by an air gap, the armature of which is stationary, mounted in non-magnetic frame includes a hollow cylinder of magnetic steel with holes around its middle section and a helical winding with a pair of crossed coils passing through these holes, laid on the smooth cylinder, or into the slots made on its inner and outer surface, and the rotor is constructed in the form of two hollow cylinders of magnetic steel with signed between them a source of constant longitudinal magnetic field, mounted on a common shaft, and mounted in non-magnetic bearing shields. The technical result consists in the possibility of getting in the car as a significant stress, and significant currents, to simplify the design and manufacturing technology of the machine, and increase the reliability of the machines, weight machines, as well as its cost. 2 C is current, and can be used as a generator or a DC motor. Known collector DC machine comprising a stator with coil-a source of constant magnetic field and a rotating shaft of an anchor with laminated magnetic circuit in the form of a steel drum with grooves winding and the collector, on which are superimposed brush [1]. Collector DC machine in generator mode allow you to get EMF and currents of considerable size within their rated capacity. Disadvantages collector DC machines are: the presence of brush-collector node, the armature winding of variables EMF and associated pulsations, the necessity of application of laminated magnetic circuit, the complexity of manufacturing, high weight / size performance and cost. Known homopolar machine comprising a stationary field and a rotating armature disk or cylindrical design with a sliding power collection [2]. Homopolar machines are easy design, allow you to get a significant amount of currents. Disadvantages are the difficulty of obtaining significant quantities of stress on them in the generator mode, having considered the high sliding which engages the stator excitation winding, anchor, brush mechanism and the contact device made in the form of two contact rings, one of which is solid, and the other cut into three segments, offset by 120 degrees. The armature winding is made of three coils, shifted relative to each other at 120 degrees. The beginning of the coils are attached to a solid ring, and the ends to the segments cut rings [3] . The machine design is an attempt to combine the advantages of conventional collector DC machine and unipolar machines. The disadvantage of DC machine And. Sibirskogo is inefficient use of active materials (copper and steel), because most of the time (two-thirds of one revolution of the armature), except for the time of switching of the two coils in the machine work involved one coil, i.e., only a third of the armature winding. Moreover, during the time of attaching the coil to the external circuit active agents, by definition, can only be half of the conductors of the coil. Therefore, the use of copper in this car three times worse than in the ordinary collector car. In addition, the coils induced variable EMF, straighten the brush-contact device, the essence of which is a very simplified collector, cocommutative, inherent in the conventional commutator machines. In other words, simplifying the design of the machine and its technology is achieved due to the inefficient use of active materials and, consequently, increasing the equivalent mass of the machine. The task, which is aimed by the invention is the improvement of DC machine by the synthesis of the manifold advantages and unipolar DC machines and achieve the following technical results:- the possibility of getting in the car as a significant stress, and significant currents; - simplification of the structure; - simplification of the manufacturing machine; - improving the reliability of the machine; - reduce vehicle weight; - reducing the cost of the machine. The task is solved in that in the car DC containing the armature winding and a smooth rotor separated by an air gap, its anchor is stationary, mounted in non-magnetic frame includes a hollow cylinder of magnetic steel with holes around its middle section and a helical winding with a pair of crossed coils passing through these holes, laid on the smooth cylinder, or grooves, in the soft magnetic steel with signed between them a source of constant longitudinal magnetic field, mounted on a common shaft, and mounted in non-magnetic bearing shields. Non-magnetic base and bearing shields, for example, of aluminium alloys eliminate workarounds circuit of the working magnetic flux. Thus, for the proposed machine can be used, for example, aluminum shell induction machines series 4A, 5A, 6A standard heights axes of rotation. Spiral armature winding with a pair of crossed coils can be made of multiturn crossed sections, each of which takes one or more slots that can be connected serially or in parallel, or series-parallel. In the first and second cases the machine, for example, in the generator mode provides significant values of voltages and currents, like a regular collector car, in the third case - significant values of currents at low voltage, like unipolar machine. As a source of constant longitudinal magnetic field of the rotor is used annular permanent magnet or winding. In the first case, the DC machine is contactless. In the second case, on the shaft are isolated contact Kohl is tsya Fig. 1-3. In Fig. 1 shows the armature winding 1 and the rotor 2 with a permanent magnetic field source 3, separated by an air gap 4. The anchor is stationary and fixed in a non-magnetic base which is not shown in the figure. It includes a hollow cylinder 5 of magnetic steel with holes on a circle in its middle part and the spiral winding 6 with a pair of crossed coils, and the rotor is constructed in the form of two hollow toothed cylinder of magnetic steel concluded between the permanent magnetic field source mounted on a common shaft 7. The cylinders of the rotor is made hollow to reduce the weight of the machine and reduce the moment of inertia of the rotor. The DC magnetic field may be a permanent magnet or winding. In the first case, the machine is contactless. In the second case, on the shaft are two insulated from it and from each other, the contact ring with a superimposed brushes for the application of the excitation voltage of the machine. The configuration of a pair of crossed coils armature winding shown in Fig. 2, and the configuration section in Fig. 2, b. The armature winding can be wound on a smooth cylinder of the magnetic circuit, and the ode anchors. Example execution of grooves on the outer and inner surfaces of the magnetic core shown in Fig. 3. In the middle part of the grooves is perforated, as at the ends of the magnetic core at the edges of the recesses corresponding to the height of the groove. Laying the windings in the slots protects the coil from damage, increases the strength and reliability of a design. Spiral armature winding with a pair of crossed coils can be made distributed single and multiple that provides significant value of the voltage of the machine. The winding is practically no windshields parts: their length is close in magnitude to the thickness of the magnetic circuit. To obtain gradations significant values of voltages and currents spiral armature winding with a pair of crossed coils can be made of multiturn sections connected in series, or series-parallel or parallel. The principle of operation of the machine is based on the law of electromagnetic induction and clearly follows from Fig. 1. For definiteness, let us consider the generator mode. Working magnetic fluxpcreated by a permanent magnet or winding, stationary relative to the rotor. Stream distributed by semesa air gap of the machine. When the rotor magnetic flux crosses only the active part of the crossed pair of turns of the armature winding, inducing in them an EMF counter sign e1 and e2, which are equal to each other and, due to the crossed coils, algebraically added to each other (Fig. 2, a): ein= e1 + e2 = 2e. In the outer conductors of the winding of the armature induced EMF does not. The total EMF of the generator E is proportional to the number of series-connected pair of coils, the length of the active part, the magnitude of the magnetic induction in the air gap and rotor speed: E = 2lw, B, since = r, E = 2lwr, where to structural coefficient; B is the induction in the air gap, T; l is the length of the active part of the pair orbits, m; w - number of turns; - circumferential speed of the rotor, m/s; r is the external radius of the rotor, m; is the angular rotor speed, 1/s When a series-parallel connection of n winding sections with equal number of turns wwithin each, the total EMF of the winding E is equal to the algebraic sum of the electromotive force of each section Ewith: E = nEc= 2nlwcr. With a parallel connection of all coils or all sections of the total EMF of the machine is equal to the EMF of one turn or one partition, the machine is able to provide="ptx2"> The EMF induced in each pair crossed coil of fixed anchors, unchanged in sign. On the other hand, the presence of isolated coils placed along the inner generatrix of the cylinder, as in the collector car DC enables you to measure the EMF of the coils in an arbitrary manner, getting within the estimated nominal capacity of the machine to any desired values of nominal voltages and currents. It should be noted that in case of equality of turns of the sections in any form of their compounds in the proposed machine is fundamentally no surge currents inherent in conventional windings collector DC machines and there is no need to balance the connections. In addition, the flow of the reaction anchor, split into two equal counter-flow acloses the ring mostly within the magnetic circuit of the armature. Thus, in the proposed machine phenomenon reactions anchors are not expressed explicitly, and the associated phenomenon of bias neutral. The use of copper in the proposed machine is not smaller than the minimum in the usual car DC because the winding has virtually no windshields parts. Thus, the ratio of the active part of the coil of the armature to its total length S="ptx2">The possibility to create significant stresses and significant currents in the inventive machine is achieved by the fact that the spiral armature winding with a pair of crossed coils can be made of multiturn sections connected in series, or series-parallel or parallel. The simplification of the structure is achieved by the fact that the anchor of the inventive machine is stationary, consisting of a hollow steel cylinder with holes around its middle section, on which is wound a helical winding with crossed coils. The EMF induced in each pair crossed coil stationary armature rotating field of the rotor, unchanged in sign. The simplification of the manufacture of the inventive machine is achieved that does not require the use of laminated magnetic circuit, can be used a standard hull designs serial machines, aluminum alloy, for example, asynchronous machines single series. The weight of the inventive machine is achieved by the fact that it is better than in the prototype, the use of copper armature winding and the steel of the magnetic circuit, the rotor is made hollow. Reducing the cost of the inventive machine reaches the Ashina, being extremely simple in construction and reliable, combines the advantages of the collector car DC and unipolar machines, and in one embodiment of the design - and contactless, with less in comparison with analogues weight and cost. The use of the claimed machine as a generator gives you the opportunity to obtain a simple, lightweight, reliable, durable constant current source. Its use in actuators allows to replace bulky, expensive collector car at a simple, reliable, easy to regulate the speed of the engine. Literature1. A. C. Ivanov-Smolensky. The electric machine. - M.: Energy, 1980. - 928 S., Fig. C. 704-706. 2. D. A. Booth. Fundamentals of electrical engineering. - M: IIA, 1996. - 468 C., Fig. C. 226-228. 3. DC machine And. Sibirskogo. Bull. N 27, 27.09.97. (EN 2091966 C1). 1. DC machine containing the armature winding and a rotor separated by an air gap, characterized in that the armature is stationary, mounted in non-magnetic frame includes a cylinder of magnetic steel with holes on a circle in its middle part, and the armature winding is made with a pair of crossed Vit is Anna and outer surfaces, while the rotor is in a non-magnetic bearing shields and made in the form of two mounted on a common shaft cylinder of magnetic steel with signed between them a source of constant longitudinal magnetic field. 2. DC machine under item 1, characterized in that the armature winding with a pair of crossed coils made of multiturn crossed sections connected in series or in parallel, or series-parallel. 3. DC machine under item 1 or 2, characterized in that the source is constant longitudinal magnetic field of the rotor is used, the ring magnet or winding.
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