CN208862573U - A kind of 360 ° of direct flow controllers of orthogonal type of phase - Google Patents
A kind of 360 ° of direct flow controllers of orthogonal type of phase Download PDFInfo
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- CN208862573U CN208862573U CN201821319352.3U CN201821319352U CN208862573U CN 208862573 U CN208862573 U CN 208862573U CN 201821319352 U CN201821319352 U CN 201821319352U CN 208862573 U CN208862573 U CN 208862573U
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Abstract
The utility model discloses a kind of 360 ° of direct flow controllers of orthogonal type of phase, which includes three-phase input voltage changing module, input selector switch, single-phase Buck alternating current unit circuit module, Three-phase electric-wave filter, output selector switch and three-phase output voltage changing module；The input terminal parallel connection of the direct flow controller accesses high-voltage fence, the output end series connection access high-voltage fence of the direct flow controller；The input selector switch is connected to the primary side or secondary side of three-phase input voltage changing module, and the output selector switch is connected to the primary side or secondary side of three-phase output voltage changing module；The single-phase Buck alternating current unit circuit module includes the consistent A phase Buck alternating current unit circuit of three circuit structures, B phase Buck alternating current unit circuit and C phase Buck alternating current unit circuit.The utility model only includes simple Buck alternating current unit circuit, only pass through level-one power conversion, the voltage-phase and amplitude of power grid transmission end can be controlled simultaneously, can control effective power flow and reactive power flow in route respectively, and realize 360 ° of adjustings at output voltage phase angle.
Description
Technical field
The utility model relates to Technics of Power Electronic Conversion technical fields, and in particular to a kind of 360 ° of direct trends of orthogonal type of phase
Controller (Direct power flow controller, DPFC).
Background technique
Electric power is the important leverage that national economy develops in a healthy way as the basic energy.Trend in electric system includes
Function trend and reactive power flow are generally codetermined by power supply, load and supply network three.It is insufficient in infrastructure investment and
In the case that excessive cycle and existing electric system facility relatively lag behind, the power flowcontrol ability to power grid is improved, to increase
The stability of forceful electric power Force system improves the electric energy transmittability of its utilization rate and power grid, has important economic benefit and society
Meaning.
In typical radiation shape network system, control voltage magnitude is the electric energy transmission in controllable power grid, there is efficacious prescriptions
Method is compensated using tapped transformer and parallel reactive.But for netted network system, this method is not applicable, because it cannot be controlled
Make the electric current of each branch.Moreover, first item reaches thermoae in the network system or netted network system of plurality of transmission lines parallel connection
The transmission line of limit (corresponding maximum transmitted electric current) limits the electric energy transmittability of entire power grid, even if other transmission lines at this time
Current-carrying capability is also underutilized.
It is flexible in order to efficiently control Line Flow, improve the electric energy transmittability of power grid and the stability of electric system
Ac transmission system (Flexible AC transmission system, FACTS) technology is widely studied and applied.But it is big
Most only one control freedom degree of FACTS device to the effective power flow and reactive power flow in power grid while cannot be distinguished
Control, or it is all due to leading to that equipment failure rate is high, life cycle is short, maintenance cost is high using high-capacity direct current energy-storage travelling wave tube etc.
More problems.
Summary of the invention
The goal of the invention of the utility model is to provide a kind of 360 ° of direct flow controllers of orthogonal type of phase, only comprising simple
Buck alternating current unit circuit can control the voltage-phase and amplitude of power grid transmission end simultaneously only by level-one power conversion,
The effective power flow and reactive power flow in route can be controlled respectively, and realize 360 ° of adjustings at output voltage phase angle.
To achieve the above object of the invention, the technical solution adopted in the utility model is: a kind of 360 ° of orthogonal types of phase are direct
Flow controller, the direct flow controller include three-phase input voltage changing module, input selector switch, single-phase Buck alternating current unit
Circuit module, Three-phase electric-wave filter, output selector switch and three-phase export voltage changing module；
The input terminal parallel connection of the direct flow controller accesses high-voltage fence, the output end of the direct flow controller
Series connection access high-voltage fence；
The input selector switch is connected to the primary side or secondary side of three-phase input voltage changing module, and the output selection is opened
Connection is connected to the primary side or secondary side of three-phase output voltage changing module；
The single-phase Buck alternating current unit circuit module includes the consistent A phase Buck alternating current unit electricity of three circuit structures
Road, B phase Buck alternating current unit circuit and C phase Buck alternating current unit circuit.
In above-mentioned technical proposal, the three-phase input voltage changing module is three-phase input transformer or three-phase input transformer
The primary side of group, the three-phase input transformer or three-phase input transformer group is triangle connection, and secondary side is to draw neutrality
The star-like connection of line.
In above-mentioned technical proposal, when the input selector switch is connected to three-phase input transformer or three-phase input transformer
When the secondary side of group；
The three-phase input transformer or the secondary side of three-phase input transformer group include A phase export winding, B phase export around
Group with C phase exports winding, and the A phase exports winding, B phase exports winding and with C phase exports winding and be connected respectively to input and selects to open
The input terminal of pass, the A phase output terminal of the input selector switch is connected to the input terminal of A phase Buck alternating current unit circuit, described
The B phase output terminal of input selector switch is connected to the input terminal of B phase Buck alternating current unit circuit, the C of the input selector switch
Phase output terminal is connected to the input terminal of C phase Buck alternating current unit circuit.
In above-mentioned technical proposal, the three-phase output voltage changing module is that three-phase exports transformer or three-phase exports transformer
The primary side of group, the three-phase output transformer or three-phase output transformer group is triangle connection, and secondary side is similar star
Connection.
In above-mentioned technical proposal, when the output selector switch is connected to three-phase output transformer or three-phase output transformer
When the primary side of group；
A phase input terminal, B phase input terminal and the C of the three-phase output transformer or the primary side of three-phase output transformer group
Phase input terminal is connected respectively to the output end of output selector switch, and the input terminal of the output selector switch is connected respectively to three-phase
The A phase output terminal of filter, B phase output terminal and C phase output terminal.
In above-mentioned technical proposal, the A phase Buck alternating current unit circuit includes first switch tube, second switch, third
Switching tube and the 4th switching tube, the emitter of the first switch tube are connected with the emitter of second switch, and the third is opened
The emitter of the emitter and the 4th switching tube that close pipe is connected, the collector of the second switch and the current collection of third switching tube
Extremely it is connected, the collector of the first switch tube is connected to the A phase output terminal of input selector switch, the collection of the 4th switching tube
Electrode is connected to the output common end of input selector switch, the collector of the second switch and the collector of third switching tube
It is connected to the A phase input terminal of Three-phase electric-wave filter；
The B phase Buck alternating current unit circuit includes the 5th switching tube, the 6th switching tube, the 7th switching tube and the 8th switch
The emitter of pipe, the emitter of the 5th switching tube and the 6th switching tube is connected, the emitter of the 7th switching tube and the
The emitter of eight switching tubes is connected, and the collector of the 6th switching tube and the collector of the 7th switching tube are connected, and the described 5th
The collector of switching tube is connected to the B phase output terminal of input selector switch, and the collector of the 8th switching tube is connected to input
The output common end of switch is selected, the collector of the 6th switching tube and the collector of the 7th switching tube are connected to three-phase filtering
The B phase input terminal of device；
The C phase Buck alternating current unit circuit includes the 9th switching tube, the tenth switching tube, the 11st switching tube and the 12nd
Switching tube, the emitter of the 9th switching tube and the emitter of the tenth switching tube are connected, the transmitting of the 11st switching tube
Pole is connected with the emitter of the 12nd switching tube, the collector of the tenth switching tube and the collector phase of the 11st switching tube
Even, the collector of the 9th switching tube is connected to the C phase output terminal of input selector switch, the current collection of the 12nd switching tube
Pole is connected to the output common end of input selector switch, the collector of the tenth switching tube and the collector of the 11st switching tube
It is connected to the C phase input terminal of Three-phase electric-wave filter.
In above-mentioned technical proposal, the Three-phase electric-wave filter includes the first output inductor, the first output filter capacitor, the
Two output inductors, the second output filter capacitor, third output inductor and third output filter capacitor；
First output filter capacitor, the second output filter capacitor and third output filter capacitor are that triangle connects.
The utility model adjusts the amplitude of three-phase alternating current input voltage by adjusting the turn ratio of three-phase input voltage changing module,
The turn ratio of adjustment three-phase output voltage changing module and the duty ratio of switching tube adjust the output voltage of the direct flow controller
Amplitude, and the output voltage of the direct flow controller is adjusted relative to former high-voltage fence by adjusting the duty ratio of switching tube
The phase difference of input voltage；
Transformation is exported by the equivalent change three-phase input voltage changing module of input selector switch and output selector switch and three-phase
The connection group number of module, so that there are 360 ° of adjustable ranges at output voltage phase angle.
Specifically, the input selector switch and the equivalent change three-phase input voltage changing module of output selector switch and three-phase are defeated
At least 6 kinds of the connection group number of voltage changing module combinations out, comprising:
(1) input selector switch control A phase exports input terminal, B that winding forward direction is connected to A phase Buck alternating current unit circuit
Mutually winding forward direction is connected to the input terminal of B phase Buck alternating current unit circuit, C phase exports winding forward direction and is connected to C phase Buck for output
The input terminal of alternating current unit circuit, the A phase output terminal of output selector switch control Three-phase electric-wave filter are connected to three-phase output transformation
A phase input terminal, the B phase output terminal of device or the primary side of three-phase output transformer group are connected to three-phase output transformer or three-phase is defeated
B phase input terminal, the C phase output terminal of the primary side of transformer group are connected to three-phase output transformer or three-phase output transformer group out
Primary side C phase input terminal；
(2) input selector switch control A phase exports input terminal, B that winding forward direction is connected to A phase Buck alternating current unit circuit
Mutually winding forward direction is connected to the input terminal of B phase Buck alternating current unit circuit, C phase exports winding forward direction and is connected to C phase Buck for output
The input terminal of alternating current unit circuit, the A phase output terminal of output selector switch control Three-phase electric-wave filter are connected to three-phase output transformation
B phase input terminal, the B phase output terminal of device or the primary side of three-phase output transformer group are connected to three-phase output transformer or three-phase is defeated
C phase input terminal, the C phase output terminal of the primary side of transformer group are connected to three-phase output transformer or three-phase output transformer group out
Primary side A phase input terminal；
(3) input selector switch control A phase exports input terminal, B that winding forward direction is connected to A phase Buck alternating current unit circuit
Mutually winding forward direction is connected to the input terminal of B phase Buck alternating current unit circuit, C phase exports winding forward direction and is connected to C phase Buck for output
The input terminal of alternating current unit circuit, the A phase output terminal of output selector switch control Three-phase electric-wave filter are connected to three-phase output transformation
C phase input terminal, the B phase output terminal of device or the primary side of three-phase output transformer group are connected to three-phase output transformer or three-phase is defeated
A phase input terminal, the C phase output terminal of the primary side of transformer group are connected to three-phase output transformer or three-phase output transformer group out
Primary side B phase input terminal；
(4) input selector switch control A phase exports input terminal, B that winding is reversely connected to A phase Buck alternating current unit circuit
Mutually winding is reversely connected to the input terminal of B phase Buck alternating current unit circuit, C phase exports winding and is reversely connected to C phase Buck for output
The input terminal of alternating current unit circuit, the A phase output terminal of output selector switch control Three-phase electric-wave filter are connected to three-phase output transformation
A phase input terminal, the B phase output terminal of device or the primary side of three-phase output transformer group are connected to three-phase output transformer or three-phase is defeated
B phase input terminal, the C phase output terminal of the primary side of transformer group are connected to three-phase output transformer or three-phase output transformer group out
Primary side C phase input terminal；
(5) input selector switch control A phase exports input terminal, B that winding is reversely connected to A phase Buck alternating current unit circuit
Mutually winding is reversely connected to the input terminal of B phase Buck alternating current unit circuit, C phase exports winding and is reversely connected to C phase Buck for output
The input terminal of alternating current unit circuit, the A phase output terminal of output selector switch control Three-phase electric-wave filter are connected to three-phase output transformation
B phase input terminal, the B phase output terminal of device or the primary side of three-phase output transformer group are connected to three-phase output transformer or three-phase is defeated
C phase input terminal, the C phase output terminal of the primary side of transformer group are connected to three-phase output transformer or three-phase output transformer group out
Primary side A phase input terminal；
(6) input selector switch control A phase exports input terminal, B that winding is reversely connected to A phase Buck alternating current unit circuit
Mutually winding is reversely connected to the input terminal of B phase Buck alternating current unit circuit, C phase exports winding and is reversely connected to C phase Buck for output
The input terminal of alternating current unit circuit, the A phase output terminal of output selector switch control Three-phase electric-wave filter are connected to three-phase output transformation
C phase input terminal, the B phase output terminal of device or the primary side of three-phase output transformer group are connected to three-phase output transformer or three-phase is defeated
A phase input terminal, the C phase output terminal of the primary side of transformer group are connected to three-phase output transformer or three-phase output transformer group out
Primary side B phase input terminal.
Above, listed 6 kinds of groups are combined into one of combination for realizing 360 ° of phase adjustings, and can be realized 360 ° of phase
The combination of adjusting has very much, does not just repeat one by one herein.
The working principle of the utility model are as follows: when the input voltage of A phase Buck alternating current unit circuit is timing, first switch
Pipe, third switching tube high frequency complementation conducting, second switch, the conducting of the 4th switching tube perseverance, and work as A phase Buck alternating current unit circuit
Input voltage when being negative, first switch tube, the conducting of third switching tube perseverance, second switch, the 4th switching tube high frequency complementation are led
It is logical；When the input voltage of B phase Buck alternating current unit circuit is timing, the 5th switching tube, the 7th switching tube high frequency complementation are connected, the
Six switching tubes, the conducting of the 8th switching tube perseverance, and when the input voltage of B phase Buck alternating current unit circuit is negative, the 5th switching tube,
The conducting of 7th switching tube perseverance, the 6th switching tube, the 8th switching tube high frequency complementation conducting；It is defeated when C phase Buck alternating current unit circuit
Entering voltage is timing, and the 9th switching tube, the 11st switching tube high frequency complementation conducting, the tenth switching tube, the 12nd switching tube perseverance are led
It is logical, and when the input voltage of C phase Buck alternating current unit circuit is negative, the 9th switching tube, the conducting of the 11st switching tube perseverance, the tenth
Switching tube, the 12nd switching tube high frequency complementation conducting.
It is exchanged comprising DC component with 2 frequencys multiplication in the duty ratio of A phase, B phase, C phase three single-phase Buck alternating current unit circuits
Component；It include frequency voltage components, fundamental voltage component and three in the output voltage of each single-phase Buck alternating current unit circuit
Subharmonic voltage component；Wherein third harmonic voltage component is cancelled out each other, and Three-phase electric-wave filter filters out frequency voltage components, three
Mutually output transformer or three-phase output transformer group input terminal obtain three-phase alternating current fundamental wave output voltage；Relative to direct trend control
The three-phase alternating current input voltage of device processed, the amplitude of three-phase alternating current output voltage is by three-phase input transformer or three-phase input transformation
The duty ratio of the turn ratio of device group, the turn ratio of three-phase output transformer or three-phase output transformer group and switching tube is determining, and thirdly
The phase of phase ac output voltage is then become by the connection group number of three-phase input transformer or three-phase input transformer group, three-phase output
The connection group number and switching tube duty ratio of depressor or three-phase output transformer group determine.
Since above-mentioned technical proposal is used, the utility model has the advantage that compared with prior art
1. the utility model before or after three-phase input voltage changing module by increasing input selector switch and three
Mutually increase output selector switch before or after output voltage changing module, corresponding different three-phase input transformer or three-phase input become
Connection group number and three-phase the output transformer of depressor group or the connection group number of three-phase output transformer group are, it can be achieved that output voltage phase
360 ° of adjustings of parallactic angle；
2. the input selector switch setting of the utility model is in three-phase input voltage changing module and single-phase Buck alternating current unit electricity
Between the module of road and output selector switch setting is between Three-phase electric-wave filter and three-phase output voltage changing module, reduces to choosing
The insulating requirements for selecting switch, reduce equipment manufacturing cost, improve safety；
3. the utility model discriminably continuously adjusts the amplitude of output voltage and phase, and its structure only has one
Grade, so that circuit topological structure is simple, control strategy is easy to accomplish, and improves the efficiency and reliability of converter, by
In the intermediate dc energy-storage travelling wave tube (capacitor) for not containing high failure rate, the failure rate of equipment is significantly reduced, equipment is extended
Life cycle, and reduce maintenance cost；
4. the utility model exports transformer or three using three-phase input transformer or three-phase input transformer group and three-phase
Mutually output transformer group, enables flow controller easily to access high-voltage fence, so as to the electric energy in high-voltage fence
Carry out transmission control.
Detailed description of the invention
Fig. 1 is the topological diagram of 360 ° of direct flow controllers of orthogonal type of phase of the utility model embodiment one
Wherein: 1, three-phase input voltage changing module；2, input selector switch；3, single-phase Buck alternating current unit circuit module；4,
Three-phase electric-wave filter；5, output selector switch；6, three-phase exports voltage changing module；7, A phase Buck alternating current unit circuit；8, B phase Buck
Alternating current unit circuit；9, C phase Buck alternating current unit circuit.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and embodiments:
Embodiment one:
Shown in Figure 1, a kind of 360 ° of direct flow controllers of orthogonal type of phase, the direct flow controller includes successively
Three-phase input voltage changing module 1, the input selector switch H of connectioni2, single-phase Buck alternating current unit circuit module 3, Three-phase electric-wave filter
4, output selector switch 5 and three-phase export voltage changing module 6,
The input terminal parallel connection of the direct flow controller accesses high-voltage fence, the output end of the direct flow controller
Series connection access high-voltage fence；
The single-phase Buck alternating current unit circuit module includes the consistent A phase Buck alternating current unit circuit of three circuit structures
7, B phase Buck alternating current unit circuit 8 and C phase Buck alternating current unit circuit 9.
In the present embodiment, the input selector switch is located at three-phase input voltage changing module and single-phase Buck alternating current unit circuit
Between module, the output selector switch is located between Three-phase electric-wave filter and three-phase output voltage changing module, for one of connection
Mode.It can also be that the input selector switch is connected to the primary side of three-phase input voltage changing module, the output selector switch
It is connected to the secondary side of three-phase output voltage changing module.
In the present embodiment, the three-phase input voltage changing module is three-phase input transformer or three-phase input transformer group Ti,
The three-phase input transformer or the primary side of three-phase input transformer group are triangle connection, and secondary side is to draw the neutral conductor
Star-like connection.
In the present embodiment, the three-phase input transformer or three-phase input transformer group TiSecondary side include that A phase exports
Winding, B phase export winding and export winding with C phase, and the A phase exports winding, B phase exports winding and exports winding with C phase and connects respectively
It is connected to input selector switch HiInput terminal, the input selector switch HiA phase output terminal be connected to A phase Buck alternating current unit
The input terminal of circuit, the input selector switch HiB phase output terminal be connected to the input terminal of B phase Buck alternating current unit circuit,
The input selector switch HiC phase output terminal be connected to the input terminal of C phase Buck alternating current unit circuit.
In the present embodiment, the three-phase output voltage changing module is that three-phase exports transformer or three-phase exports transformer group To,
The three-phase output transformer or the primary side of three-phase output transformer group are triangle connection, and secondary side is that similar star connects
It connects.
In the present embodiment, the three-phase output transformer or three-phase export transformer group ToPrimary side A phase input terminal,
B phase input terminal and C phase input terminal are connected respectively to output selector switch HoOutput end, the output selector switch HoInput
End is connected respectively to the A phase output terminal of Three-phase electric-wave filter, B phase output terminal and C phase output terminal.
In the present embodiment, the A phase Buck alternating current unit circuit includes first switch tube S1a_a, second switch S1b_a,
Three switching tube S2a_aWith the 4th switching tube S2b_a, the first switch tube S1a_aEmitter and second switch S1b_aTransmitting
Extremely it is connected, the third switching tube S2a_aEmitter and the 4th switching tube S2b_aEmitter be connected, the second switch
S1b_aCollector and third switching tube S2a_aCollector be connected, the first switch tube S1a_aCollector be connected to input
Select switch HiA phase output terminal, the 4th switching tube S2b_aCollector be connected to input selector switch HiOutput it is public
End, the second switch S1b_aCollector and third switching tube S2a_aCollector be connected to the A phase of Three-phase electric-wave filter and input
End, that is, the first output inductor L with the Three-phase electric-wave filterfaIt is connected；
The B phase Buck alternating current unit circuit includes the 5th switching tube, the 6th switching tube, the 7th switching tube and the 8th switch
It manages (being indicated in Fig. 1 with block diagram), the emitter of the 5th switching tube and the emitter of the 6th switching tube are connected, and the described 7th opens
The emitter of the emitter and the 8th switching tube that close pipe is connected, the collector of the 6th switching tube and the current collection of the 7th switching tube
Extremely it is connected, the collector of the 5th switching tube is connected to input selector switch HiB phase output terminal, the 8th switching tube
Collector is connected to input selector switch HiOutput common end, the collector of the 6th switching tube and the collection of the 7th switching tube
Electrode is connected to the B phase input terminal of Three-phase electric-wave filter, that is, the second output inductor L with the Three-phase electric-wave filterfbIt is connected；
The C phase Buck alternating current unit circuit includes the 9th switching tube, the tenth switching tube, the 11st switching tube and the 12nd
Switching tube (indicates in Fig. 1 with block diagram), and the emitter of the 9th switching tube and the emitter of the tenth switching tube are connected, described the
The emitter of the emitter of 11 switching tubes and the 12nd switching tube is connected, and the collector and the 11st of the tenth switching tube is opened
The collector for closing pipe is connected, and the collector of the 9th switching tube is connected to input selector switch HiC phase output terminal, described
The collector of 12 switching tubes is connected to input selector switch HiOutput common end, the collector of the tenth switching tube and
The collector of 11 switching tubes is connected to the C phase input terminal of Three-phase electric-wave filter, that is, exports and filters with the third of the Three-phase electric-wave filter
Wave inductance LfcIt is connected.
Switching tube used is IGBT switching tube in the present embodiment, however the utility model is not limited in opening using IGBT
Guan Guan can also be replaced with switch mosfet pipe etc., by taking switch mosfet pipe as an example, at this point, the source of switch mosfet pipe
Extremely correspond to the emitter of IGBT switching tube, the collector of the corresponding IGBT switching tube of the drain electrode of switch mosfet pipe.
In the present embodiment, the Three-phase electric-wave filter is for filtering out in single-phase Buck alternating current unit circuit module because of switching tube height
The high frequency harmonic components that frequency on-off generates export transformer through three-phase or three-phase export transformer group ToExport three-phase alternating current output
Voltage, the Three-phase electric-wave filter include the first output inductor Lfa, the first output filter capacitor Cf1, second output filtered electrical
Feel Lfb, the second output filter capacitor Cf2, third output inductor LfcWith third output filter capacitor Cf3。
The first output filter capacitor Cf1, the second output filter capacitor Cf2With third output filter capacitor Cf3For triangle
Shape connection, i.e. output filter capacitor and three-phase output transformer or three-phase export transformer group ToPrimary side uses delta connection phase
Even, this is because containing third harmonic voltage in the output voltage of each phase Buck alternating current unit circuit, and delta connection can
It is cancelled out each other using hree-phase symmetry, obtains sinusoidal output line voltage.
The utility model adjusts the amplitude of three-phase alternating current input voltage by adjusting the turn ratio of three-phase input voltage changing module,
The turn ratio of adjustment three-phase output voltage changing module and the duty ratio of switching tube adjust the output voltage of the direct flow controller
Amplitude, and the output voltage of the direct flow controller is adjusted relative to former high-voltage fence by adjusting the duty ratio of switching tube
The phase difference of input voltage；Pass through the equivalent change three-phase input voltage changing module of input selector switch and output selector switch and three-phase
The connection group number for exporting voltage changing module at least needs 6 kinds of combinations, and every kind of combinatorial phase angle adjustment width is all 60 °, so that output
Voltage phase angle has 360 ° of adjustable ranges.
Specifically, the input selector switch and the equivalent change three-phase input voltage changing module of output selector switch and three-phase are defeated
The connection group number of voltage changing module lists 6 kinds of combinations out, comprising:
(1) input selector switch control A phase exports input terminal, B that winding forward direction is connected to A phase Buck alternating current unit circuit
Mutually winding forward direction is connected to the input terminal of B phase Buck alternating current unit circuit, C phase exports winding forward direction and is connected to C phase Buck for output
The input terminal of alternating current unit circuit, the A phase output terminal of output selector switch control Three-phase electric-wave filter are connected to three-phase output transformation
A phase input terminal, the B phase output terminal of device or the primary side of three-phase output transformer group are connected to three-phase output transformer or three-phase is defeated
B phase input terminal, the C phase output terminal of the primary side of transformer group are connected to three-phase output transformer or three-phase output transformer group out
Primary side C phase input terminal；
(2) input selector switch control A phase exports input terminal, B that winding forward direction is connected to A phase Buck alternating current unit circuit
Mutually winding forward direction is connected to the input terminal of B phase Buck alternating current unit circuit, C phase exports winding forward direction and is connected to C phase Buck for output
The input terminal of alternating current unit circuit, the A phase output terminal of output selector switch control Three-phase electric-wave filter are connected to three-phase output transformation
B phase input terminal, the B phase output terminal of device or the primary side of three-phase output transformer group are connected to three-phase output transformer or three-phase is defeated
C phase input terminal, the C phase output terminal of the primary side of transformer group are connected to three-phase output transformer or three-phase output transformer group out
Primary side A phase input terminal；
(3) input selector switch control A phase exports input terminal, B that winding forward direction is connected to A phase Buck alternating current unit circuit
Mutually winding forward direction is connected to the input terminal of B phase Buck alternating current unit circuit, C phase exports winding forward direction and is connected to C phase Buck for output
The input terminal of alternating current unit circuit, the A phase output terminal of output selector switch control Three-phase electric-wave filter are connected to three-phase output transformation
C phase input terminal, the B phase output terminal of device or the primary side of three-phase output transformer group are connected to three-phase output transformer or three-phase is defeated
A phase input terminal, the C phase output terminal of the primary side of transformer group are connected to three-phase output transformer or three-phase output transformer group out
Primary side B phase input terminal；
(4) input selector switch control A phase exports input terminal, B that winding is reversely connected to A phase Buck alternating current unit circuit
Mutually winding is reversely connected to the input terminal of B phase Buck alternating current unit circuit, C phase exports winding and is reversely connected to C phase Buck for output
The input terminal of alternating current unit circuit, the A phase output terminal of output selector switch control Three-phase electric-wave filter are connected to three-phase output transformation
A phase input terminal, the B phase output terminal of device or the primary side of three-phase output transformer group are connected to three-phase output transformer or three-phase is defeated
B phase input terminal, the C phase output terminal of the primary side of transformer group are connected to three-phase output transformer or three-phase output transformer group out
Primary side C phase input terminal；
(5) input selector switch control A phase exports input terminal, B that winding is reversely connected to A phase Buck alternating current unit circuit
Mutually winding is reversely connected to the input terminal of B phase Buck alternating current unit circuit, C phase exports winding and is reversely connected to C phase Buck for output
The input terminal of alternating current unit circuit, the A phase output terminal of output selector switch control Three-phase electric-wave filter are connected to three-phase output transformation
B phase input terminal, the B phase output terminal of device or the primary side of three-phase output transformer group are connected to three-phase output transformer or three-phase is defeated
C phase input terminal, the C phase output terminal of the primary side of transformer group are connected to three-phase output transformer or three-phase output transformer group out
Primary side A phase input terminal；
(6) input selector switch control A phase exports input terminal, B that winding is reversely connected to A phase Buck alternating current unit circuit
Mutually winding is reversely connected to the input terminal of B phase Buck alternating current unit circuit, C phase exports winding and is reversely connected to C phase Buck for output
The input terminal of alternating current unit circuit, the A phase output terminal of output selector switch control Three-phase electric-wave filter are connected to three-phase output transformation
C phase input terminal, the B phase output terminal of device or the primary side of three-phase output transformer group are connected to three-phase output transformer or three-phase is defeated
A phase input terminal, the C phase output terminal of the primary side of transformer group are connected to three-phase output transformer or three-phase output transformer group out
Primary side B phase input terminal.
When the utility model is used, being given in a fundamental voltage period by taking A phase Buck alternating current unit circuit as an example
Each switching tube driving signal timing of A phase.As the input voltage u of A phase Buck alternating current unit circuitia1For timing, first switch tube
S1a_a, third switching tube S2a_aHigh frequency complementation conducting, second switch S1b_a, the 4th switching tube S2b_aPerseverance conducting, and work as A phase
The input voltage u of Buck alternating current unit circuitia1When being negative, first switch tube S1a_a, third switching tube S2a_aPerseverance conducting, second opens
Close pipe S1b_a, the 4th switching tube S2b_aHigh frequency complementation conducting.Similar, as the input voltage u of B phase Buck alternating current unit circuitib1
For timing, the 5th switching tube, the 7th switching tube high frequency complementation conducting, the 6th switching tube, the 8th switching tube perseverance are connected, and work as B phase
The input voltage u of Buck alternating current unit circuitib1When being negative, the 5th switching tube, the conducting of the 7th switching tube perseverance, the 6th switching tube, the
Eight switching tube high frequency complementations conducting；As the input voltage u of C phase Buck alternating current unit circuitic1For timing, the 9th switching tube, the tenth
One switching tube high frequency complementation conducting, the tenth switching tube, the conducting of the 12nd switching tube perseverance, and when C phase Buck alternating current unit circuit
Input voltage uic1When being negative, the 9th switching tube, the conducting of the 11st switching tube perseverance, the tenth switching tube, the 12nd switching tube high frequency are mutual
Mend conducting.
It is exchanged comprising DC component with 2 frequencys multiplication in the duty ratio of A phase, B phase, C phase three single-phase Buck alternating current unit circuits
Component；It include frequency voltage components, fundamental voltage component and three in the output voltage of each single-phase Buck alternating current unit circuit
Subharmonic voltage component；Wherein third harmonic voltage component is cancelled out each other, and Three-phase electric-wave filter filters out frequency voltage components, three
Mutually output transformer or three-phase export transformer group ToOutput end obtains three-phase alternating current fundamental wave output voltage；Relative to direct trend
The amplitude of the three-phase alternating current input voltage of controller, three-phase alternating current output voltage is become by three-phase input transformer or three-phase input
Depressor group TiThe turn ratio, three-phase output transformer or three-phase export transformer group ToThe turn ratio and duty ratio determine, and thirdly intersection
The phase of output voltage is flowed then by three-phase input transformer or three-phase input transformer group TiConnection group number, three-phase export transformation
Device or three-phase export transformer group ToConnection group number and switching tube duty ratio determine.
In the present embodiment, make in the duty ratio of A phase, B phase, C phase three single-phase Buck alternating current unit circuits comprising direct current point
Amount and 2 frequency multiplication AC compounents, wherein A phase duty ratio is da=k0+k2sin(2ωt+β2), B phase duty ratio is db=k0+k2sin
(2ωt+β2+ 120 °), C phase duty ratio is dc=k0+k2sin(2ωt+β2- 120 °), k0For DC component in duty ratio, k2And β2
The amplitude and initial phase angle of 2 frequency multiplication AC compounents respectively in duty ratio, ω are input voltage angular frequency.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.A variety of modifications of above-described embodiment will be readily apparent to those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to above-described embodiment shown in this article, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (7)
1. a kind of 360 ° of direct flow controllers of orthogonal type of phase, it is characterised in that: the direct flow controller includes that three-phase is defeated
Enter voltage changing module, input selector switch, single-phase Buck alternating current unit circuit module, Three-phase electric-wave filter, output selector switch and
Three-phase exports voltage changing module；
The input terminal parallel connection of the direct flow controller accesses high-voltage fence, the output end series connection of the direct flow controller
Access high-voltage fence；
The input selector switch is connected to the primary side or secondary side of three-phase input voltage changing module, and the output selector switch connects
It is connected to the primary side or secondary side of three-phase output voltage changing module；
The single-phase Buck alternating current unit circuit module includes the consistent A phase Buck alternating current unit circuit of three circuit structures, B phase
Buck alternating current unit circuit and C phase Buck alternating current unit circuit.
2. 360 ° of direct flow controllers of orthogonal type of phase according to claim 1, it is characterised in that: the three-phase input
Voltage changing module is three-phase input transformer or three-phase input transformer group, the three-phase input transformer or three-phase input transformer
The primary side of group is triangle connection, and secondary side is the star-like connection for drawing the neutral conductor.
3. 360 ° of direct flow controllers of orthogonal type of phase according to claim 2, it is characterised in that: when the input is selected
When selecting switch and being connected to the secondary side of three-phase input transformer or three-phase input transformer group；
The three-phase input transformer or the secondary side of three-phase input transformer group include that A phase exports winding, B phase exports winding and
C phase exports winding, and the A phase exports winding, B phase exports winding and exports winding with C phase and is connected respectively to input selector switch
Input terminal, the A phase output terminal of the input selector switch are connected to the input terminal of A phase Buck alternating current unit circuit, the input
The B phase output terminal of selection switch is connected to the input terminal of B phase Buck alternating current unit circuit, and the C phase of the input selector switch is defeated
Outlet is connected to the input terminal of C phase Buck alternating current unit circuit.
4. 360 ° of direct flow controllers of orthogonal type of phase according to claim 1, it is characterised in that: the three-phase output
Voltage changing module is that three-phase exports transformer or three-phase exports transformer group, and the three-phase output transformer or three-phase export transformer
The primary side of group is triangle connection, and secondary side is star-like connection.
5. 360 ° of direct flow controllers of orthogonal type of phase according to claim 4, it is characterised in that: when the output is selected
Select switch be connected to three-phase output transformer or three-phase output transformer group primary side when；
The A phase input terminal of the three-phase output transformer or the primary side of three-phase output transformer group, B phase input terminal and C phase are defeated
Enter the output end that end is connected respectively to output selector switch, the input terminal of the output selector switch is connected respectively to three-phase filtering
The A phase output terminal of device, B phase output terminal and C phase output terminal.
6. 360 ° of direct flow controllers of orthogonal type of phase according to claim 1, it is characterised in that: the A phase Buck
Alternating current unit circuit includes first switch tube, second switch, third switching tube and the 4th switching tube, the first switch tube
Emitter is connected with the emitter of second switch, the emitter of the third switching tube and the emitter phase of the 4th switching tube
Even, the collector of the second switch is connected with the collector of third switching tube, the collector connection of the first switch tube
To the A phase output terminal of input selector switch, the output that the collector of the 4th switching tube is connected to input selector switch is public
End, the collector of the second switch and the collector of third switching tube are connected to the A phase input terminal of Three-phase electric-wave filter；
The B phase Buck alternating current unit circuit includes the 5th switching tube, the 6th switching tube, the 7th switching tube and the 8th switching tube,
The emitter of 5th switching tube and the emitter of the 6th switching tube are connected, and the emitter and the 8th of the 7th switching tube is opened
The emitter for closing pipe is connected, and the collector of the 6th switching tube and the collector of the 7th switching tube are connected, the 5th switch
The collector of pipe is connected to the B phase output terminal of input selector switch, and the collector of the 8th switching tube is connected to input selection
The output common end of switch, the collector of the 6th switching tube and the collector of the 7th switching tube are connected to Three-phase electric-wave filter
B phase input terminal；
The C phase Buck alternating current unit circuit includes the 9th switching tube, the tenth switching tube, the 11st switching tube and the 12nd switch
The emitter of pipe, the emitter of the 9th switching tube and the tenth switching tube is connected, the emitter of the 11st switching tube and
The emitter of 12nd switching tube is connected, and the collector of the tenth switching tube and the collector of the 11st switching tube are connected, institute
The collector for stating the 9th switching tube is connected to the C phase output terminal of input selector switch, and the collector of the 12nd switching tube connects
It is connected to the output common end of input selector switch, the collector connection of the collector and the 11st switching tube of the tenth switching tube
To the C phase input terminal of Three-phase electric-wave filter.
7. 360 ° of direct flow controllers of orthogonal type of phase according to claim 1, it is characterised in that: the three-phase filtering
Device includes the first output inductor, the first output filter capacitor, the second output inductor, the second output filter capacitor, the
Three output inductors and third output filter capacitor；
First output filter capacitor, the second output filter capacitor and third output filter capacitor are that triangle connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821319352.3U CN208862573U (en) | 2018-08-16 | 2018-08-16 | A kind of 360 ° of direct flow controllers of orthogonal type of phase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821319352.3U CN208862573U (en) | 2018-08-16 | 2018-08-16 | A kind of 360 ° of direct flow controllers of orthogonal type of phase |
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| Publication Number | Publication Date |
|---|---|
| CN208862573U true CN208862573U (en) | 2019-05-14 |
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ID=66414830
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821319352.3U Withdrawn - After Issue CN208862573U (en) | 2018-08-16 | 2018-08-16 | A kind of 360 ° of direct flow controllers of orthogonal type of phase |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088410A (en) * | 2018-08-16 | 2018-12-25 | 苏州大学 | A kind of direct flow controller of 360 ° of orthogonal types of phase and its working method |
-
2018
- 2018-08-16 CN CN201821319352.3U patent/CN208862573U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088410A (en) * | 2018-08-16 | 2018-12-25 | 苏州大学 | A kind of direct flow controller of 360 ° of orthogonal types of phase and its working method |
| CN109088410B (en) * | 2018-08-16 | 2024-04-12 | 法瑞电气(南通)有限公司 | Phase 360-degree orthogonal direct power flow controller and working method thereof |
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