Single-machine electromechanical transmission

FIELD: transport.

SUBSTANCE: invention relates to electromechanical transmission used, particularly, in hybrid power plants. Stepless electromechanical transmission comprises engaging one shaft of two-way electrical machine with primary engine and second shaft with engine drive. Winding terminals of both shafts are connected via reversible transducer to take off or to output electric power from DC power accumulator. Two-way machine first and second shafts may revolve relative to each other and have multiphase windings with brushes to allow connection between windings and frequency inverter.

EFFECT: simplified design.

1 dwg

 

The invention relates to the field of electrical engineering and of electrical engineering and can be used as Electromechanical transmission, transmission of rotational mechanical energy from Prime mover to the drive mechanism to change the speed and torque, including the hybrid power units.

Known ELECTRIC DC MOTOR INDUCTION TYPE (patent RU 2286642). The solution describes an electric DC motor induction type, containing a circular casing, which has two stationary stator with the windings of the armature and excitation, as well as the rotor poles, wherein the stationary stators made with one common armature winding, the active conductors of the sections which are placed in the grooves of one stator with pole shift division relative to the grooves of the other of the stator and are interconnected by a switch manifold mounted stationary in the front-end part of the engine, brush the node which is rigidly connected with the shaft of the rotor, and the rotor is provided with two systems of extension poles, each of which consists of pairs oriented towards each other claw pole protrusions adjacent both sides of each of the poles and mounted on ferromagnetic cylinders which are rigidly connected with the shaft and ustanovlenym interval, equal to the gap between the stators, in the interval between the claw pole protrusions each additional poles on the ferromagnetic cylinder installed its winding in series with the armature winding by the rotating slip rings and stationary brushes.

The disadvantage is that the solution does not provide independent rotation shaft (stator and rotor), as only turns the rotor system is used direct current, and accordingly, it is impossible to sum up (remove) the mechanical rotational energy from both of the shafts and to let (rent) electric power of the alternating current windings of both of the shafts.

The prior art asynchronous motor with slip-ring rotor (patent RU 47588 U)containing the stator, inside there is a three-phase winding and posted by the rotor on bearings mounted on the bearing shields, the conclusions of the rotor winding are connected to the contact rings node, slip rings, rotating together with the shaft of the rotor, slip rings and brush holders with brushes protected by a casing having a collector node, outside of the stator is the terminal box, wherein the node contact rings mounted on the shaft end of the rotor by means of the key and a fixed retaining ring, rear bearing shield parallel to the shaft Roto is and rigidly fixed finger to brush holders, the casing of the brush-commutator Assembly is mounted on the deep planting the castle on the rear bearing shield and additionally bolted for planting the castle, while the switching wire brush through the hole in the bearing shield disposed of in one the terminal box located on the stator housing, a stator and a rotor, the rotor shaft opposite the brush-commutator site, fixed the fan and the stator housing is made closed with horizontal ribbing on the outside.

The solution does not provide independent rotation shaft (stator and rotor) relative to the body, as it only turns the rotor, and therefore it is impossible to sum up (remove) the mechanical rotational energy from both shafts.

The prior art known to the decision to patent RU 65696U crane on three phase induction motor with a wound rotor, which includes cast iron shell, consisting of a frame and front and rear shields with bearings, a stator having a core made of electrical steel sheet and coil, the rotor core electrical steel sheet and coil, the node contact rings, including slip rings, brushes with brush and finger which is fixed to the brush, a fan for cooling the engine, characterized in that is provided with a device to replace the grease in the bearings without disassembly of the engine, the bed is made of ribbed, and the fan is installed with the possibility of blowing the outer surface of the motor stator winding and the rotor is made of single-layer sapnay, while the input unit of the rotor and stator with the ability to carry out a supply cable with both sides of the engine, and front and rear shields are made flat, and the stator is pressed into bed.

The solution does not provide independent rotation shaft (stator and rotor) relative to the body, as it only turns the rotor, and therefore it is impossible to sum up (remove) the mechanical rotational energy from both shafts.

Known controlled two-dimensional electrical machine with AC power with controlled frequency it generates voltage (patent RU 2332774 and EN 2349016)that convert the mechanical energy supplied to one (mechanical) input machine, and electric energy DC simultaneously supplied to the other input (electrical), total electrical energy of alternating current. However, such a machine and the scheme of its connection does not allow you to transfer mechanical energy with variable speed and mechanical torque from the drive motor to the drive mechanism using the energy of the slip and is composed of relatively unreliable, metoc what about the collector node and the intricate design of an anchor with a combination of windings of AC and DC.

The prior art cascade scheme of the electro-mechanical transmission drives) "primary engine-generator-drive motor-actuator" or "primary engine-generator-power inverter-driven electric motor-actuator, which converts the mechanical characteristics of the rotational motion of the primary engine to the required for the drive mechanism characteristics. However, such schemes are used in its composition at least two electric machines.

The technical result of the claimed utility model is the ability to convert the rotational energy of the primary engine into rotational energy of the drive mechanism with the change in mechanical torque and speed when using only one electric machine. When implemented this function continuously variable transmission (smooth speed control, automation, dynamic and regenerative braking, the primary engine in optimal and economical modes, with the combination of traditional devices (reverse gear, clutch, starter, generator) in a single device.

I.e. the technical result consists in providing a stepless change of the parameters (frequency and is omenta) rotational mechanical energy imparted to the drive mechanism and the use of energy-slip with application in Electromechanical transmission, only one electric machine.

This technical result is achieved due to the fact that the single-machine Electromechanical transmission including an electric alternating current machine for converting mechanical energy into mechanical energy with change of speed and torque with multiphase windings of an alternating current, arranged in the magnetic circuits of the first and second shaft, and brush mechanisms of the first and second shaft for electric output winding shaft on the housing, and the first and the second shaft is made with the possibility of independent rotation relative to each other and relative to the housing of the electric machine, characterized in that the electric machine of the first shaft mechanically connected with the primary motor and the second shaft with a drive mechanism, the conclusions of the windings of both of the shafts are connected through a reversible power frequency Converter with the possibility of selection or the issuance of electric power from the energy storage unit DC, and provides a unified management system of the primary engine and reversible power Converter.

Stepless Electromechanical transmission is implemented by connecting one of the shafts of two-dimensional electrical machine to the primary engine, and the second to the drive mechanism, when the connection of outputs of the windings of both of the shafts through the PE Arseny frequency Converter with the possibility of selection or the issuance of electric power from the energy storage unit DC. The first and second shaft two-dimensional electrical machine at the same time have the opportunity to rotate relative to each other and have a multi-phase electrical winding with brush mechanisms for communicating with reversing windings of the frequency Converter.

The drives of the electric power of direct current of sufficient power and capacity allows you to use the transmission as a hybrid power-plant.

Figure 1 shows a structural diagram of a single-machine Electromechanical transmission.

In figure 1 the first shaft 4 two-dimensional electrical machine 1 is mechanically connected with the primary motor 2 and the second shaft 5 with the driving mechanism 3. Electrical windings 12 and 13 of the first and second shaft through the brush mechanisms 14 and 15 are connected via a reversible power frequency Converter 6, which in turn is connected with the energy storage unit DC 7. Primary engine 2 and reversible power frequency Converter 6 is controlled by the General control system 11.

Primary engine 2 develops the mechanical torque, which is transmitted to the shaft of the first winding two-dimensional electrical machine 1 AC. Winding of the first 12 and second 13 of the shaft to receive electrical stimulation from the reversible power of the frequency Converter 6 and create a joint mage is itoe field, through which the generated electromagnetic torque. Electromagnetic torque forces to rotate the second shaft 5 which is mechanically linked to the drive mechanism 3. When there is a slip in the rotation of the first shaft 4 and the second shaft 5 in the winding of the second shaft 13, circulates the slip power. Power slide through reversible power frequency Converter 6 is converted and transmitted to the first winding shaft 12 which is mechanically connected with the primary motor frequency allowing to minimize sliding and rotating the first and second shaft without loss of synchronism. Excess or need power circulating in the loop "the first winding 12 to the second winding 13 is reversible power frequency Converter 6 to the first winding" is selected in the energy accumulator 7 for reserve in case of excess, or consumed from the energy storage device 7 in case of need. Power AC circuits 8 and 9 from the power of the frequency Converter 6 to the brush mechanisms 14 and 15 of the windings of the first and second shaft two-dimensional electrical machine are as low as three-way, electric power of the direct current circuit 10 from the power of the frequency Converter 6 to the energy storage unit 7 are dual line. The control system 11, by analyzing the parameters of primary motor 2,the drive mechanism 3, the electric machine 1, a reversible power frequency Converter 6, software and operator's job, controls the operating parameters of the primary engine 2 (mechanical torque and rotation frequency) and reversible power frequency Converter (frequency and voltage of electric power and its direction, the magnitude of the issue or selection in the energy storage unit DC 7) provides consistent, with minimal slipping and without loss of stability of the rotational motion of the primary motor and drive mechanism.

Figure 1 is a transmission power of the primary engine 2 - the first shaft 4 of the electric machine 1" EP (with mechanical torque MD and speed W), the transmission power of the second shaft 5 of the electric machine 1-drive mechanism 3 RM (with mechanical torque Mm and the rotational speed W), transmission of electric power winding of the second shaft 13 of the electric machine 1 is reversible power Converter 6" Ps=Rd-RM (with frequency Ws=W-W), the transmission of electrical power windings of the first shaft 12 of the electric machine 1 - reversible power Converter 6" P=Ps-RNA (with frequency W2), transmission of electric power direct-current reversible power Converter 6 - drive electric power DC 7" RNA shown without accounting for the losses of electrical and mechanical energy and direction for one of the operation modes - mode of movement of the drive mechanism with slip when W>W. For other modes (start the primary engine, idling of the primary engine, regenerative braking, dynamic braking, transient modes, the modes of the hybrid power plant) the direction of power transmission can be reversed or be null.

In all modes of energy transfer from the primary engine 2 to the drive mechanism 3 and Vice versa proposed transmission allows not to dissipate the energy of the slide, and make productive use of it to negotiate speed-torque characteristics of the Prime mover 2 and the actuator 3.

When sufficient power and capacity of the energy storage unit of the proposed single-machine Electromechanical transmission is a new variant of the hybrid power plant of the vehicle.

Single-machine Electromechanical transmission including an electric alternating current machine for converting mechanical energy into mechanical energy with change of speed and torque with multiphase windings of an alternating current, arranged in the magnetic circuits of the first and second shaft, and brush mechanisms of the first and second shaft for electric output winding shaft on the housing, and the first and the second shaft is accomplished with the possibility of independent rotation relative to each other and relative to the housing of the electric machine, characterized in that the electric machine of the first shaft mechanically connected with the primary motor and the second shaft to the drive mechanism, the conclusions of the windings of both of the shafts are connected through a reversible power frequency Converter with the possibility of selection or the issuance of electric power from the energy storage unit DC, and provides a unified management system of the primary engine and reversible power Converter.



 

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