Synchronous machine

FIELD: electricity.

SUBSTANCE: invention relates to the field of electrical engineering, in particular to synchronous machines with combined excitation. According to the given invention on the armature of the synchronous machine containing a multiphase armature winding and face laminated core with multiphase sub-excitating winding, the latter is combined with the armature winding on a part of active length of armature core and forms a part of active length of its coil. The magnetic circuit of the rotor with permanent magnets is made short, forming a free ring band on a part of active length of the armature core, where the additional ring-type magnetic circuit of claw type fixed on the rotor is installed. In a ring-type magnetic circuit in its internal ring hollow the stator-fastened magnetic circuit with a toroidal field coil is installed, which is connected to the machine control and regulation system. During the operation of the synchronous machine the sub-excitation link of claw type with the toroidal winding creates an additional regulated magnetic flux, the direction of which can be co-directional or opposite with the main flow of permanent magnets, that ensures the operation of the synchronous machine both in normal, and in abnormal modes of operations with a possibility of excitation field dampening.

EFFECT: expansion of the range of regulation of output voltage at simultaneous provisioning of possibility for excitation field dampening.

2 dwg

 

The invention relates to a synchronous electric machines with a combined excitation and can be used to generate electrical energy, and drive mechanisms. Known synchronous generators with a combined excitation containing the polyphase stator anchor winding and podozritelnyy winding connected to the anchor winding through the regulator, and on the rotor permanent magnets and soft magnetic end shunts, U.S. patent No. 325076, CL 322-49, 1965, adopted for similar. The disadvantage of analogue is the low speed voltage regulation, a narrow range of regulation and the lack of field suppression of the rotor in an abnormal mode. Technical solution that most closely correlated to the present invention, described in the author's certificate of the USSR No. 752646, (S1) Ál3, H02K 21/00 from 01.03.77, Bulletin No. 28, published 01.08.80, taken as a prototype. In the prototype the stator consists of laminated armature core with multiphase anchor winding, edge laminated core with multiphase podozritelnoe winding, static vasoregulatory through which connect the anchor and podozritelnaya winding, a rotor with permanent magnets and soft magnetic sector poles.

The disadvantage of the prototype is the narrow range of the control output is voltage anchor winding and almost no possibility of field suppression of excitation in abnormal operation modes of the synchronous generator. The purpose of the invention is the extension of the range of output voltage regulation with the possibility of clearing the field excitation. This goal is achieved by the fact that unlike the prototype multiphase podozritelnaya winding combined with the coil anchor on the part of the active length of the armature core and is part of the active length of its coil, the magnetic circuit of the rotor with permanent magnets is made shorter, forming a free annular zone on part of the active length of the armature core, placed in the additional annular magnetic circuit claw type, fixed to the rotor with an internal annular cavity and mounted inside of the other magnetic circuit, provided with an excitation winding of the toroidal type, connected to the control system and regulation and fixed to the shield of the stator.

Distinctive features of the invention are: the combination of the active length of the coil armature armature winding and winding podozrenia; shortening the active length of a coil of the armature of the magnetic rotor with permanent magnets; placing on the rotor of an additional magnetic core inductor claw type equipped with another magnetic circuit with the field winding mounted on the stator.

The proposal meets the criterion of "substantial differences", as known perecin the information established normative document (paragraph 2 of the Rules drafting, filing and examination of an application for the grant of a patent for an invention is a technical solution like symptoms was not found.

Figure 1 shows schematically a longitudinal section of a synchronous electric machine, figure 2 shows the circuit of the windings. The stator of the synchronous machine 1 includes a core 1 with a multiphase anchor coil 2, the combined length of the coil body with anchor winding, winding podozrenia 3, the end panels 4, the inner annular cavity 5 is installed inside another magnetic core 6 of a stator fixed to the shield 4 and provided with a field winding 7 of the toroidal type connected with system management and regulation 8, figure 2. The rotor of the synchronous machine 1 includes a main magnetic circuit 9, the permanent magnet 10, a free annular zone 11 is installed in the additional annular magnetic circuit claw type 12, is rigidly fixed to the rotor.

Podozritelnaya winding 3 is part of the active length of the armature winding 2 and performs the function as the armature winding, and winding podozrenia.

When operating a synchronous machine with permanent magnets create a practically constant value of magnetic flux, equal to ΦN, while podozritelnoe link claw tee is and with toroidal winding creates an additional adjustable magnetic flux Φ Dwhen the direction of magnetic flux ΦDmay be directed in accordance with the magnetic flux ΦNor counter them. In the first case, the resulting value of the magnetic flux linked with the armature winding will be ΦΣND(corresponds to the operation of synchronous machine under normal operating conditions). In the second case, the resulting value of the magnetic flux linked with the armature winding will beΦΣ=ΦN-ΦDmax0,

this formirovanie the value ofΦDmaxadditional threads can be set to approximate ΦNthereby is achieved damping field synchronous machine in abnormal modes of operation.

Synchronous electrical machine containing the stator face shields, core multiphase anchor winding and podozritelnoe link with multiphase podozritelnoe winding with system management and control, the rotor with the main magnetic core and the permanent magnets, characterized in that the multiphase podozritelnaya winding combined with the coil anchor on the part of the act the main length of the armature core and is part of the active length of her curls, the main magnetic circuit of the rotor with permanent magnets is made shorter, forming a free annular zone on part of the active length of the armature core placed in the additional annular magnetic circuit claw type, fixed to the rotor with an internal annular cavity and mounted inside of the other magnetic circuit of the stator, provided with an excitation winding of the toroidal type, connected to the control system and regulation and is fixed on the end shield to the stator.



 

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FIELD: electricity.

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4 dwg

FIELD: electrical engineering.

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EFFECT: significant decrease in distortion of output spectra, as well as flexibility of frequency band.

17 cl, 8 dwg

FIELD: electricity.

SUBSTANCE: stand-alone contactless synchronous generator contains inductor with excitation winding of exciter, primary winding and additional winding. Additional winding is connected to three-phase rectifier, and output of the latter is connected to molecular energy storage unit and voltage inverter. Output of inverter is connected to primary winding. Exciter winding is connected to dc power supply via regulating element of excitation current pulse regulator. Input of excitation current pulse regulator is connected with primary winding. Electrically combined winding of excitation and armature exciter is contacted to neutral via rectifier. Number of terminal pairs of additional winding of inductor and voltage are equal to number of terminal pairs and voltage of primary winding. Input of excitation current pulse regulator is connected with primary winding of inductor, thus negative feedback for output voltage is performed. Voltage of molecular energy storage unit is equal to required allowed voltage. Voltage inverter is provided with control circuit for frequency and voltage stabilisation.

EFFECT: widening of source functionality due to connection of kinetic load with comparable power.

2 cl, 1 dwg

FIELD: electricity.

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EFFECT: widening of source functionality due to connection of kinetic load with comparable power.

2 cl, 1 dwg

FIELD: electric engineering, possible use in electric power supply devices.

SUBSTANCE: electric power supply system consists of constant current supply, rheostat, automatic release, electric motor, synchronous generator with exciter, three-phased rectifier with smoothing filter and consumed units. Synchronous generator with exciter is in rigid connection with electric motor and has first, second and third outputs, connected respectively to first, second and third inputs of consumed units. Output of constant current supply is connected through the rheostat to first input of automatic release, second input and output of which respectively are connected to output of three-phased rectifier with smoothing filter and to input of electric motor. First and second inputs and first and second outputs of first transforming ferro-resonance voltage stabilizer are respectively connected to first and second outputs of synchronous generator with exciter and to first and second inputs of three-phased rectifier with smoothing filter. Second input of the latter is also connected to first output of second transforming ferro-resonance stabilizer, second output of which is connected to third input of three-phased rectifier. First and second inputs of second stabilizer are respectively connected to second and third outputs of synchronous generator with exciter.

EFFECT: increased time of constant rotation of electric motor shaft.

1 dwg

The invention relates to the field of electrical and electric engineering, in particular to an induction generator sets, DC

FIELD: electric engineering, possible use in electric power supply devices.

SUBSTANCE: electric power supply system consists of constant current supply, rheostat, automatic release, electric motor, synchronous generator with exciter, three-phased rectifier with smoothing filter and consumed units. Synchronous generator with exciter is in rigid connection with electric motor and has first, second and third outputs, connected respectively to first, second and third inputs of consumed units. Output of constant current supply is connected through the rheostat to first input of automatic release, second input and output of which respectively are connected to output of three-phased rectifier with smoothing filter and to input of electric motor. First and second inputs and first and second outputs of first transforming ferro-resonance voltage stabilizer are respectively connected to first and second outputs of synchronous generator with exciter and to first and second inputs of three-phased rectifier with smoothing filter. Second input of the latter is also connected to first output of second transforming ferro-resonance stabilizer, second output of which is connected to third input of three-phased rectifier. First and second inputs of second stabilizer are respectively connected to second and third outputs of synchronous generator with exciter.

EFFECT: increased time of constant rotation of electric motor shaft.

1 dwg

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