CN206807336U - A kind of excitation unit of generator - Google Patents
A kind of excitation unit of generator Download PDFInfo
- Publication number
- CN206807336U CN206807336U CN201720707652.8U CN201720707652U CN206807336U CN 206807336 U CN206807336 U CN 206807336U CN 201720707652 U CN201720707652 U CN 201720707652U CN 206807336 U CN206807336 U CN 206807336U
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- generator
- armature
- circuit
- output end
- control circuit
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Abstract
The utility model discloses a kind of excitation unit of generator, including：DC exciter, it includes armature and the Exciting Windings for Transverse Differential Protection on DC excitation machine rotor；Control circuit, the output end of armature are connected to the power input of control circuit, and the output end of control circuit provides electric current for the magnet exciting coil of generator；Overload protecting circuit, the output end of a measuring circuit are connected to the input of overload protecting circuit, and the output end of overload protecting circuit is connected to the control signal of control circuit；Capacitor, its one end electrically connect with armature, and the other end electrically connects with the output end of control circuit；Wherein, DC exciter also includes field regulator, and the both ends of field regulator make armature, field regulator, the Exciting Windings for Transverse Differential Protection of DC exciter forms the energized circuit of a closure respectively with Exciting Windings for Transverse Differential Protection, armature series connection.Exciting current can be adjusted exactly for the excitation unit, while it also avoid the problem of excitation unit when generator overloads makes destruction.
Description
Technical field
It the utility model is related to a kind of excitation unit of generator.
Background technology
Generator is the plant equipment into electric energy by the energy conversion of other forms, and it is by the hydraulic turbine, steam turbine, diesel engine
Or the driving of other dynamic power machines, by current, air-flow, energy caused by fuel combustion or nuclear fission is converted into mechanical energy and is transmitted to
Generator, then electric energy is converted to by generator.Generator is widely used in social all trades and professions.Generator generally comprise stator and
The rotor rotated in stator.Coil is provided with stator, there is excitation unit coil on rotor, when rotor rotates, on stator
Coil cutting rotor magnetic field, coil on stator is produced voltage.If changing the driving current on rotor, hair just can be changed
Output voltage on motor.But when generator overloads, it is easy to which the rotor or excitation unit that generator occurs meet with
To the phenomenon of destruction.There is also the problem of degree of regulation difference always for the regulation of driving current.
Utility model content
For overcome the deficiencies in the prior art, the utility model provides a kind of excitation unit, and the excitation unit can be accurate
Really exciting current is adjusted, while it also avoid the problem of excitation unit when generator overloads makes destruction.
Technical scheme provided by the utility model is：
A kind of excitation unit of generator, including：
DC exciter, it includes armature and the Exciting Windings for Transverse Differential Protection on the DC excitation machine rotor；
Control circuit, the output end of the armature are connected to the power input of the control circuit, the control circuit
Output end provide electric current for the magnet exciting coil of generator；
Overload protecting circuit, the output end of a measuring circuit are connected to the input of the overload protecting circuit, the mistake
The output end for carrying protection circuit is connected to the control signal of the control circuit；
Capacitor, its one end electrically connect with the armature, and the other end electrically connects with the output end of the control circuit；
Wherein, the DC exciter also includes field regulator, and the both ends of the field regulator are encouraged with described respectively
Magnetic winding, the armature series connection, make the armature, the field regulator, and the Exciting Windings for Transverse Differential Protection of the DC exciter is formed
The energized circuit of one closure.
Preferably, the excitation unit of described generator, the generator include stator and rotor, the stator and institute
State armature to be co-axially mounted, the rotor coaxial of the rotor of the generator and the DC exciter is installed.
Preferably, the excitation unit of described generator, rotor windings are provided with the rotor of the generator, commutated
Device and the brush being engaged with the commutator, the rotor windings of the generator are by the brush and the commutator from institute
State control circuit and obtain exciting current.
Preferably, the excitation unit for the generator stated, the input of the measuring circuit are connected to the generator
Outlet.
Preferably, the excitation unit of described generator, the DC exciter also include voltage transformer, its one end
Outlet with the generator is connected, and the other end is connected with the field regulator.
Preferably, the excitation unit of described generator, the overload protecting circuit are a triode, and its base stage connects
The output end of the measuring circuit, its colelctor electrode connect the output end of the armature.
The utility model comprises at least following beneficial effect：Due to being provided with DC exciter, control circuit, overload protection
Circuit, when generator overloads, overload protecting circuit can output signal to control circuit, make control circuit cut-out excitation electricity
Stream, protection generator will not be destroyed excitation unit because of overload, simultaneously as DC exciter is provided with Excitation Adjustment
Device, and the armature, the field regulator are saved, the Exciting Windings for Transverse Differential Protection of the DC exciter forms the excitation time of a closure
Road, the setting of field regulator are realized to the accurate regulation of exciting current；Capacitor is also provided with, makes to pass through generator amature
On the electric current of magnet exciting coil rapidly increase.
Further advantage, target and feature of the present utility model embody part by following explanation, and part will also pass through
Research of the present utility model and practice are understood by the person skilled in the art.
Brief description of the drawings
Fig. 1 is the structural representation of the excitation unit of generator described in the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The all other embodiment obtained, belong to the scope of the utility model protection.
The advantages of to make technical solutions of the utility model, is clearer, with reference to the accompanying drawings and examples to the utility model
Elaborate.
As shown in figure 1, the excitation unit for the generator that the utility model embodiment provides, including：DC exciter, it is wrapped
Include armature 1 and the Exciting Windings for Transverse Differential Protection 2 on the DC excitation machine rotor；Control circuit 3, the output end of the armature are connected to
The power input of the control circuit 3, the output end of the control circuit provide electric current for the magnet exciting coil of generator；Overload
Protection circuit 4, the output end of a measuring circuit 5 are connected to the input of the overload protecting circuit, the overload protecting circuit
Output end be connected to the control signal of the control circuit；Capacitor 6, its one end electrically connect with the armature, the other end
Electrically connected with the output end of the control circuit；Wherein, the DC exciter also includes field regulator 7, the Excitation Adjustment
The both ends of device are saved respectively with the Exciting Windings for Transverse Differential Protection, the armature series connection, make the armature, the field regulator, it is described straight
The Exciting Windings for Transverse Differential Protection for flowing exciter forms the energized circuit of a closure.
Due to being provided with DC exciter, control circuit, overload protecting circuit, when generator overloads, overload is protected
Protection circuit can output signal to control circuit, control circuit is cut off exciting current, and protection generator will not make because of overload
Excitation unit is destroyed, simultaneously as DC exciter is provided with field regulator, and the armature, the adjustment of field excitation
Device, the Exciting Windings for Transverse Differential Protection of the DC exciter form the energized circuit of a closure, and the setting of field regulator is realized to encouraging
Magnetoelectricity stream is accurately adjusted；Capacitor is also provided with, makes rapidly to increase by the electric current of the magnet exciting coil on generator amature.
Further, the generator includes stator 8 and rotor, and the stator is co-axially mounted with the armature, the hair
The rotor coaxial of the rotor of motor and the DC exciter is installed.
Further, it is provided with rotor windings 9 on the rotor of the generator, commutator and is engaged with the commutator
Brush, the rotor windings of the generator obtain excitation electricity by the brush and the commutator from the control circuit
Stream.
Further, the input of the measuring circuit is connected to the outlet of the generator.
When the output end voltage of measuring circuit drops to a preset range from normal operating voltage, you can judge to generate electricity
Machine overloads, and overload protecting circuit will export shutoff signal, so as to which the rotor windings cut off to generator export exciting current.
Predetermined voltage can be configured according to actual conditions, and the present embodiment does not do specific restriction.
Further, the DC exciter also includes voltage transformer 10, its one end and the outlet phase of the generator
Even, the other end is connected with the field regulator.The setting of voltage transformer realizes automatically adjusting for exciting current, and it is used for
The electric current of generator output is detected, and delivers this to field regulator, field regulator is encouraged according to the Current calculation received
The exciting current needed in magnetic loop, and provide it to energized circuit.
Further, the overload protecting circuit is a triode, and its base stage connects the output end of the measuring circuit, its
Colelctor electrode connects the output end of the armature.The setting of overload protecting circuit is not limited to cited by the present embodiment, as long as
It is that by the circuit of the function.
As described above, according to the utility model, exciting current can be adjusted exactly for the excitation unit, while
Avoid the problem of excitation unit when generator overloads makes destruction.
Although embodiment of the present utility model is disclosed as above, it is not restricted in specification and embodiment
Listed utilization, it can be applied to various suitable fields of the present utility model completely, for those skilled in the art,
Other modification is easily achieved, therefore under the universal limited without departing substantially from claim and equivalency range, this reality
Specific details is not limited to new and shown here as the legend with description.
Claims (6)
- A kind of 1. excitation unit of generator, it is characterised in that including：DC exciter, it includes armature and the Exciting Windings for Transverse Differential Protection on the DC excitation machine rotor；Control circuit, the output end of the armature are connected to the power input of the control circuit, the control circuit it is defeated Go out end and provide electric current for the magnet exciting coil of generator；Overload protecting circuit, the output end of a measuring circuit are connected to the input of the overload protecting circuit, and the overload is protected The output end of protection circuit is connected to the control signal of the control circuit；Capacitor, its one end electrically connect with the armature, and the other end electrically connects with the output end of the control circuit；Wherein, the DC exciter also includes field regulator, the both ends of the field regulator respectively with the excitation around Group, the armature series connection, make the armature, the field regulator, and the Exciting Windings for Transverse Differential Protection of the DC exciter forms one The energized circuit of closure.
- 2. the excitation unit of generator as claimed in claim 1, it is characterised in that the generator includes stator and rotor, The stator is co-axially mounted with the armature, and the rotor coaxial of the rotor of the generator and the DC exciter is installed.
- 3. the excitation unit of generator as claimed in claim 2, it is characterised in that be provided with and turn on the rotor of the generator Sub- winding, commutator and the brush being engaged with the commutator, the rotor windings of the generator pass through the brush and institute State commutator and obtain exciting current from the control circuit.
- 4. the excitation unit of generator as claimed in claim 1, it is characterised in that the input of the measuring circuit is connected to The outlet of the generator.
- 5. the excitation unit of generator as claimed in claim 3, it is characterised in that it is mutual that the DC exciter also includes voltage Sensor, its one end are connected with the outlet of the generator, and the other end is connected with the field regulator.
- 6. the excitation unit of generator as claimed in claim 1, it is characterised in that the overload protecting circuit is one or three poles Pipe, its base stage connect the output end of the measuring circuit, and its colelctor electrode connects the output end of the armature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720707652.8U CN206807336U (en) | 2017-06-16 | 2017-06-16 | A kind of excitation unit of generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720707652.8U CN206807336U (en) | 2017-06-16 | 2017-06-16 | A kind of excitation unit of generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206807336U true CN206807336U (en) | 2017-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720707652.8U Active CN206807336U (en) | 2017-06-16 | 2017-06-16 | A kind of excitation unit of generator |
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| Country | Link |
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| CN (1) | CN206807336U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412175A (en) * | 2018-12-14 | 2019-03-01 | 哈尔滨理工大学 | A kind of double axis excitation device of synchronous capacitor |
| CN109617090A (en) * | 2018-12-14 | 2019-04-12 | 哈尔滨理工大学 | A kind of excitation unit of synchronous capacitor |
-
2017
- 2017-06-16 CN CN201720707652.8U patent/CN206807336U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412175A (en) * | 2018-12-14 | 2019-03-01 | 哈尔滨理工大学 | A kind of double axis excitation device of synchronous capacitor |
| CN109617090A (en) * | 2018-12-14 | 2019-04-12 | 哈尔滨理工大学 | A kind of excitation unit of synchronous capacitor |
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