CN208174295U - A kind of brushless double feed generator grid-connection control device - Google Patents
A kind of brushless double feed generator grid-connection control device Download PDFInfo
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- CN208174295U CN208174295U CN201820475279.2U CN201820475279U CN208174295U CN 208174295 U CN208174295 U CN 208174295U CN 201820475279 U CN201820475279 U CN 201820475279U CN 208174295 U CN208174295 U CN 208174295U
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Abstract
The utility model relates to a kind of brushless double feed generator grid-connection control devices, including controller, bi-directional frequency converter, motor current detecting circuit, electric moter voltage detection circuit, voltage detection circuit；The voltage feedback signal input terminal of voltage detection circuit, the output end of electric moter voltage detection circuit and controller connects, the input terminal of voltage detection circuit is connect with three phase worker power, and the input terminal of electric moter voltage detection circuit and the generating winding of axle generator connect；The output end of motor current detecting circuit and the current of electric feedback signal input terminal of controller connect, and the input terminal of motor current detecting circuit and the generating winding of axle generator connect；The connection of first control terminal of controller output end and bi-directional frequency converter, the second control terminal of bi-directional frequency converter and the excitation winding of axle generator connect.The utility model provides different brushless double feed generator grid-connected modes for user, realizes axle generator and the long-term parallel running of external power supply.
Description
Technical field
The utility model relates to motor control technology fields more particularly to a kind of brushless double feed generator cutting-in control to fill
It sets.
Background technique
Brushless dual-feed motor is a kind of New-type electric machine, it, which is remained, commonly small excellent of brush double feedback electric engine frequency inverter capacity
Point, while brush and slip ring are eliminated, motor reliability effectively improves.Brushless double feed generator is variable speed constant frequency generator system
System, its connection between power grid is flexible connection relationship, small to the impact of power grid, thus the wind-power electricity generation of variable speed constant frequency,
It is received significant attention in hydroelectric field, especially in ship power field using more and more extensive.Currently, Ship Power Station
It is that main promotion diesel engine drives axle generator to be powered full electric equipment peculiar to vessel by traditional diesel generating set variation,
But the prior art can only realize that single diesel-driven generator solely nets external power generation, fail fundamentally to realize axle generator and external electrical
The operating condition of the long-term parallel running in source, this becomes brushless double feed technology urgent problem to be solved in marketing and application process.
Utility model content
The utility model is based on above-mentioned technical problem, proposes a kind of brushless double feed generator grid-connection control device,
By the control to axle generator excitation winding voltage magnitude, phase, phase angle, electric current, axle generator and outside are realized
The long-term parallel running of power supply.
In order to achieve the above objectives, a kind of brushless double feed generator grid-connection control device of the utility model, including it is controller, double
To frequency converter, motor current detecting circuit, electric moter voltage detection circuit, voltage detection circuit；The supply voltage detection
The output end of circuit is connect with the supply voltage feedback signal input terminal of the controller, the voltage detection circuit it is defeated
Enter end to connect with three phase worker power, the voltage magnitude of the voltage detection circuit acquisition three phase worker power, phase, phase
Parallactic angle；The output end of the motor current detecting circuit is connect with the current of electric feedback signal input terminal of the controller, institute
The generating winding of the input terminal and axle generator of stating motor current detecting circuit connects, the motor current detecting circuit acquisition
The electric current of axle generator；The output end of the electric moter voltage detection circuit and the electric moter voltage feedback signal of the controller are defeated
Enter end connection, the input terminal of the electric moter voltage detection circuit and the generating winding of axle generator connect, the electric moter voltage
The voltage of detection circuit acquisition axle generator；First control terminal of the controller output end and the bi-directional frequency converter connects
It connects, the second control terminal of the bi-directional frequency converter and the excitation winding of axle generator connect.
It preferably, further include source current detection circuit, the output end of the source current detection circuit and the control
The source current feedback signal input terminal of device connects, and the input terminal and three phase worker power of the source current detection circuit connect
It connects, the current amplitude of the source current detection circuit acquisition three phase worker power.
Preferably, the motor current detecting circuit include the first current transformer, first current transformer it is defeated
Outlet is connect with the current of electric feedback signal input terminal of the controller, the input terminal and axis band of first current transformer
The generating winding of generator connects.
Preferably, the source current detection circuit include the second current transformer, second current transformer it is defeated
Outlet is connect with the source current feedback signal input terminal of the controller, the input terminal and three-phase of second current transformer
Power frequency supply connection.
Preferably, first current transformer and the second current transformer are specifically the mating current transformer of instrument, institute
The class of accuracy for stating the mating current transformer of instrument is 0.2 grade.
It preferably, further include communications adapter and operation panel, the signaling interface of the controller and the communication are transferred
First communication interface of device connects, and the second communication interface of the signaling interface of the operation panel and the communications adapter connects
It connects.
Preferably, the communications adapter is specially RJ45 connector, the signaling interface of the controller and the RJ45
The plug of connector connects, and the signaling interface of the operation panel is connect with the socket of the RJ45 connector.
Compared with prior art, the advantage of the utility model is：It is detected by voltage detection circuit, source current
Voltage magnitude, phase, phase angle, the electric current of circuit monitoring current external three phase worker power, by electric moter voltage detection circuit,
Motor current detecting circuit monitor axle generator voltage, electric current, user can by operation panel be arranged axle generator around
The ratio or axle generator output power value of group electric current and external three phase worker power electric current, controller is according to current external three
The excitation voltage of the voltage magnitude of phase power frequency supply, phase, phase angle regulation axle generator excitation winding, to reach and three-phase
Power frequency supply carries out the requirement of plesiochronous operation, then adjusts axle generator according to the current amplitude of current three phase worker power
The exciting current of excitation winding, to meet the axle generator winding current of user setting and the three phase worker power electric current of detection
Ratio, or controller adjustment axis reach with the excitation voltage of generator excitation winding carried out with three phase worker power it is quasi- same
When walking the requirement of operation, according to the axle generator output power value adjustment axis of user setting with the excitation of generator excitation winding
Electric current, to reach the power that live actual condition needs the generated electricity output of axle generator.The utility model provides not for user
Same brushless double feed generator grid-connected mode, meets grid-connected demand of the user under different operating conditions, by operation panel to axis band
The parameter monitored in motor operation course carries out real-time display, facilitates user to check and carries out axis band according to real-time parameter
The ratio or axle generator output power value of generator windings electric current and external three phase worker power electric current are arranged, and network process
Control is accurate, simple to operate, realizes axle generator and the long-term parallel running of external power supply.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and can be implemented in accordance with the contents of the specification, below on the preferred embodiment of the present invention and the accompanying drawings in detail
It describes in detail bright as after.Specific embodiment of the present utility model is shown in detail by following embodiment and its attached drawing.
Detailed description of the invention
It is described in further detail with reference to the accompanying drawing with the embodiments of the present invention.
Fig. 1 is a kind of first topology diagram of brushless double feed generator grid-connection control device of the utility model；
Fig. 2 is a kind of second topology diagram of brushless double feed generator grid-connection control device of the utility model.
In figure：1, controller；2, voltage detection circuit；3, motor current detecting circuit；31, the first Current Mutual Inductance
Device；4, electric moter voltage detection circuit；5, bi-directional frequency converter；6, source current detection circuit；61, the second current transformer；7, it grasps
Make panel；8, three phase worker power；9, axle generator；91, generating winding；92, excitation winding；10, three phase worker power master
Switch；11, axle generator main switch；12, external loading branch switch；13, external loading；14, communications adapter.
Specific embodiment
Understand to remove the purpose of this utility model, technical solution and advantage more, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain this
Utility model is not used to limit the utility model.
A kind of brushless double feed generator grid-connection control device, as shown in Figure 1, including controller 1, bi-directional frequency converter 5, motor
Current detection circuit 3, electric moter voltage detection circuit 4, voltage detection circuit 2；The output end of voltage detection circuit 2 with
The supply voltage feedback signal input terminal of controller 1 connects, the input terminal and three phase worker power 8 of voltage detection circuit 2
Connection, voltage detection circuit 2 acquire the voltage magnitude of three phase worker power 8, phase, phase angle；Current of electric detection electricity
The output end on road 3 is connect with the current of electric feedback signal input terminal of controller 1, the input terminal of motor current detecting circuit 3 with
The generating winding 91 of axle generator 9 connects, and motor current detecting circuit 3 acquires the electric current of axle generator 9；Electric moter voltage inspection
The output end of slowdown monitoring circuit 4 is connect with the electric moter voltage feedback signal input terminal of controller 1, the input of electric moter voltage detection circuit 4
End is connect with the generating winding 91 of axle generator 9, and electric moter voltage detection circuit 4 acquires the voltage of axle generator 9；Controller
1 output end is connect with the first control terminal of bi-directional frequency converter 5, the second control terminal of bi-directional frequency converter 5 and encouraging for axle generator 9
Magnetic winding 92 connects.
It in one embodiment, further include communications adapter 14 and operation panel 7, the signaling interface of controller 1 and communication
First communication interface of adapter 14 connects, and the signaling interface of operation panel 7 and the second communication interface of communications adapter 14 connect
It connects.Preferably, communications adapter 14 is specially RJ45 connector, and the signaling interface of controller 1 and the plug of RJ45 connector connect
It connects, the signaling interface of operation panel 7 is connect with the socket of RJ45 connector.In the present embodiment, user is set by operation panel 7
The output power value of axle generator 9, controller 1 monitor the electricity of external three phase worker power 8 by voltage detection circuit 2
Pressure amplitude value, phase, phase angle are monitored the voltage of axle generator 9 by electric moter voltage detection circuit 4, are examined by current of electric
Slowdown monitoring circuit 3 monitors the electric current of axle generator 9, voltage magnitude of the controller 1 according to current three phase worker power 8, phase, phase
Angle adjusts the excitation voltage of the excitation winding 92 of axle generator 9, is carried out with reaching axle generator 9 and three phase worker power 8
The requirement of plesiochronous operation, controller 1 receive the output power value of axle generator 9 set by user, and according to shaft generator
The exciting current of the output power value adjustment excitation winding 92 of machine 9, needs axle generator 9 to generate electricity to reach live actual condition
Output power, such as need axle generator 9 quantify output power be 50KW, then user pass through 7 quantitative setting axis of operation panel
Output power value with generator 9 is 50KW, it should be noted that the setting value of the output power of axle generator 9 cannot surpass
The power-handling capability of axle generator 9 is crossed, that is, needs to estimate the rated output power value of axle generator 9 in advance.
In one embodiment, as shown in Fig. 2, further including source current detection circuit 6, source current detection circuit 6
Output end is connect with the source current feedback signal input terminal of controller 1, the input terminal and three-phase work of source current detection circuit 6
Frequency power 8 connects, and source current detection circuit 6 acquires the current amplitude of three phase worker power 8.In the present embodiment, user passes through
Operation panel 7 sets the ratio of 8 electric current of three phase worker power of 9 winding current of axle generator and detection, and controller 1 passes through electricity
Source voltage detecting circuit 2 monitors the voltage magnitude of external three phase worker power 8, phase, phase angle, detects electricity by source current
Road 6 monitors the current amplitude of external three phase worker power 8, and the electricity of axle generator 9 is monitored by electric moter voltage detection circuit 4
Pressure monitors the electric current of axle generator 9 by motor current detecting circuit 3, and controller 1 is according to current three phase worker power 8
The excitation voltage of voltage magnitude, phase, the excitation winding 92 of phase angle regulation axle generator 9, with reach axle generator 9 with
Three phase worker power 8 carries out the requirement of plesiochronous operation, then according to the current amplitude adjustment axis band of current three phase worker power 8
The exciting current of the excitation winding 2 of generator 9, and according to the three-phase of axle generator 9 winding current and detection set by user
The exciting current of the proportion adjustment excitation winding 2 of 8 electric current of power frequency supply, the three-phase work of 9 winding current of axle generator and detection
The ratio of 8 electric current of frequency power can be set as 1:1 or 1:2 or 2:1 or other ratios, but the ratiometric conversion by setting obtains
Current value and detected no more than the load current value of axle generator 9 if the rated current of axle generator 9 is 100A
Electric current to three phase worker power 8 is 200A, then the ratio set can only be less than or be equal to 1:1, if more than the ratio, then axis band
It can be more than that the load current value of axle generator 9 needs to lead to that is, in setting ratio value that generator 9, which needs the current value exported,
The detected value for crossing 8 electric current of load current value and current three phase worker power of axle generator 9 estimates its ratio.
In one embodiment, as shown in Figs. 1-2, motor current detecting circuit 3 include the first current transformer 31, first
The output end of current transformer 31 is connect with the current of electric feedback signal input terminal of controller 1, the first current transformer 31
Input terminal is connect with the generating winding 91 of axle generator 9, and the first current transformer 31 acquires the electric current of axle generator 9.
In one embodiment, as shown in Fig. 2, source current detection circuit 6 includes the second current transformer 61, the second electricity
The output end of current transformer 61 is connect with the source current feedback signal input terminal of controller 1, the second current transformer 61 it is defeated
Enter end to connect with three phase worker power 8, the second current transformer 61 acquires the current amplitude of three phase worker power 8.
In one embodiment, the first current transformer 31 and the second current transformer 61 are specially that the mating electric current of instrument is mutual
Sensor, the class of accuracy of the mating current transformer of instrument are 0.2 grade, and 0.2 grade is specially expiring for the mating current transformer of instrument
Range value is 100A divided by five, such as full scale of the mating current transformer of instrument, then selects the mating electricity of the instrument of 100A/5A specification
Current transformer.
In one embodiment, as shown in Figs. 1-2, three phase worker power 8 is by three phase worker power main switch 10 to outer
Section load 13 is powered, and external loading 13 accesses three phase worker power 8 by external loading branch switch 12, axle generator 9
Generating winding 91 is directly accessed three phase worker power 8, and the excitation winding 92 of axle generator 9 passes through reversible transducer 5 and control
Device 1 connects, and according to 9 grid-connected mode of axle generator of grid-connected demand and selection of the user under different operating conditions, controller 1 passes through
Axle generator 9 is adjusted by reversible transducer 5, when the parameter after the adjusting of axle generator 9 meets the requirement of controller 1,
Axle generator 9 is incorporated to three phase worker power 8 by axle generator main switch 11, powers jointly to external loading 13.
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
Above embodiments only express the several embodiments of the utility model, and the description thereof is more specific and detailed, but simultaneously
The limitation to utility model patent range therefore cannot be interpreted as.It should be pointed out that for the ordinary skill people of this field
For member, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this reality
With novel protection scope.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (7)
1. a kind of brushless double feed generator grid-connection control device, it is characterised in that：Including controller, bi-directional frequency converter, motor electricity
Current detection circuit, electric moter voltage detection circuit, voltage detection circuit；The output end of the voltage detection circuit and institute
State the supply voltage feedback signal input terminal connection of controller, input terminal and the three-phase main-frequency electricity of the voltage detection circuit
Source connection, the voltage magnitude of the voltage detection circuit acquisition three phase worker power, phase, phase angle；The motor electricity
The output end of current detection circuit is connect with the current of electric feedback signal input terminal of the controller, the current of electric detection electricity
The input terminal on road and the generating winding of axle generator connect, the electricity of the motor current detecting circuit acquisition axle generator
Stream；The output end of the electric moter voltage detection circuit is connect with the electric moter voltage feedback signal input terminal of the controller, described
The input terminal of electric moter voltage detection circuit and the generating winding of axle generator connect, and the electric moter voltage detection circuit acquires axis
Voltage with generator；The controller output end is connect with the first control terminal of the bi-directional frequency converter, the two-way frequency conversion
Second control terminal of device and the excitation winding of axle generator connect.
2. a kind of brushless double feed generator grid-connection control device as described in claim 1, it is characterised in that：It further include power supply electricity
Current detection circuit, the output end of the source current detection circuit and the source current feedback signal input terminal of the controller connect
It connects, the input terminal of the source current detection circuit is connect with three phase worker power, the source current detection circuit acquisition three
The current amplitude of phase power frequency supply.
3. a kind of brushless double feed generator grid-connection control device as claimed in claim 2, it is characterised in that：The current of electric
Detection circuit includes the first current transformer, and the current of electric of the output end and the controller of first current transformer is anti-
The connection of feedback signal input terminal, the input terminal of first current transformer and the generating winding of axle generator connect.
4. a kind of brushless double feed generator grid-connection control device as claimed in claim 3, it is characterised in that：The source current
Detection circuit includes the second current transformer, and the source current of the output end and the controller of second current transformer is anti-
The connection of feedback signal input terminal, the input terminal of second current transformer are connect with three phase worker power.
5. a kind of brushless double feed generator grid-connection control device as claimed in claim 4, it is characterised in that：First electric current
Mutual inductor and second current transformer are specifically the mating current transformer of instrument, the standard of the mating current transformer of instrument
Exactness grade is 0.2 grade.
6. a kind of brushless double feed generator grid-connection control device as claimed in claim 5, it is characterised in that：It further include that communication turns
Device and operation panel are connect, the signaling interface of the controller is connect with the first communication interface of the communications adapter, the behaviour
The signaling interface for making panel is connect with the second communication interface of the communications adapter.
7. a kind of brushless double feed generator grid-connection control device as claimed in claim 6, it is characterised in that：The communication switching
Implement body is RJ45 connector, and the signaling interface of the controller is connect with the plug of the RJ45 connector, the operating surface
The signaling interface of plate is connect with the socket of the RJ45 connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820475279.2U CN208174295U (en) | 2018-04-04 | 2018-04-04 | A kind of brushless double feed generator grid-connection control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820475279.2U CN208174295U (en) | 2018-04-04 | 2018-04-04 | A kind of brushless double feed generator grid-connection control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208174295U true CN208174295U (en) | 2018-11-30 |
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ID=64371789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820475279.2U Active CN208174295U (en) | 2018-04-04 | 2018-04-04 | A kind of brushless double feed generator grid-connection control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208174295U (en) |
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2018
- 2018-04-04 CN CN201820475279.2U patent/CN208174295U/en active Active
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