CN103956912B - A kind of directly series connection three-phase matrix form medium-high voltage frequency converter - Google Patents
A kind of directly series connection three-phase matrix form medium-high voltage frequency converter Download PDFInfo
- Publication number
- CN103956912B CN103956912B CN201410203075.XA CN201410203075A CN103956912B CN 103956912 B CN103956912 B CN 103956912B CN 201410203075 A CN201410203075 A CN 201410203075A CN 103956912 B CN103956912 B CN 103956912B
- Authority
- CN
- China
- Prior art keywords
- phase
- voltage
- filter
- matrix
- sigma
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Ac-Ac Conversion (AREA)
Abstract
The invention discloses a kind of directly series connection three-phase matrix form medium-high voltage frequency converter, step-down transformer T1 has n secondary, and auxiliary winding phase place is identical, without phase contrast；Three-phase three-phase matrix array A1 An is formed the array of 1 row n row by n three-phase three-phase matrix converter unit, in array, every a line is corresponding with the often group secondary of step-down transformer connects, every output mutually of each three-phase three phase matrix all balances through RC filtering and resistance R, the most directly it is cascaded, thus forms AC three-phase output.Controller is responsible for controlling to adjust the work of whole system.The three-phase three-phase matrix converter that the present invention can be made up of low pressure low power three-phase three-phase matrix converter or high pressure IGBT is through RC filtering and balance resistor network R11 R1n, R21 R2n, R31 R3n directly connects and obtains the high voltage power supply of amplitude, frequency-adjustable, realize output voltage and input current is sine wave, input power factor is close to 1, and energy capable of bidirectional flowing, possess the advantages such as four quadrant running ability, it is adaptable to middle high-pressure driving by A.C.motor field.
Description
Technical field
The present invention relates to a kind of converter, particularly relate to a kind of directly series connection three-phase matrix form medium-high voltage frequency converter, belong to
In power electronic equipment technical field.
Background technology
Mesohigh large power alternating-current electric power transmission field, the converters scheme applied mainly is wrapped
Include: the friendship orthogonal high voltage converter that 1, power switch or power cell are directly connected；2, the three-level AC orthogonal of diode clamp
Inverter and electric capacity fly across many level AC and DC hybrid transmission system；3, two level current mode AC and DC hybrid transmission system.But apply in reality
In, this three classes medium-high voltage frequency converter all inevitably existing defects: 1 class converter exists that power device is large number of, equipment
Huge, energy in bidirectional flow is difficult；2 class converters exist that harmonic wave is big, power factor is low, inefficiency；3 class converter du/dt
Impact big, harmonic wave and idle impact is big, on electrical machine insulation impact greatly.Based on case above, need a kind of novel mesohigh electricity
Power electronic converter occurs, its indispensable following characteristics: without electrochemical capacitor or the use of self-healing electric capacity；Electrical network and changer it
Between be capable of four quadrant running ability；The capacity of single inverter unit includes that voltage endurance capability and current capacity can be suitable at present
Main flow requirement on devices.Such converter not only output voltage amplitude can regulate, and input current presents sine wave, power because of
Count close to 1, the step-down transformer vice-side winding simple in construction of its high voltage supply, can design identical.Therefore, whole system cost
Low, life-span length, reliability height, function admirable, be suitable for the developing direction of following mesohigh electronic frequency convertor.Disclosure satisfy that with
The medium-high voltage frequency converter of upper condition is the cascaded multiple AC-AC frequency converter of high-pressure and low-pressure high-voltage type, directly connects
Three-phase matrix form medium-high voltage frequency converter is exactly one of which, at present, not yet has the open report of correlation technique.
Summary of the invention
Present invention aims to the deficiencies in the prior art, it is proposed that a kind of directly series connection three-phase matrix form mesohigh
Converter, it has four quadrant running ability, output AC voltage and frequency continuously adjustabe, input current and output voltage is just
String ripple, input power factor is essentially 1, and harmonic effects is negligible, its simple in construction, and maintenance cost is low, system is general
Property is strong, reliability is high, performance good, energy-conservation, have broad application prospects.
Solution of the present invention solves existing technical problem by the following technical solutions.
A kind of three-phase matrix form medium-high voltage frequency converter of directly connecting, including: inlet wire wave filter LC, step-down transformer T1, three
Phase three-phase inverter array A1-An, balancing resistance network R11-R1n, R21-R2n and R31-R3n and master controller；
Described inlet wire wave filter LC) it is made up of three inductance L1-L3 and three filter capacitors (C1-C3), three filtered electrical
Sense is serially connected in three-phase incoming line respectively, and its input is connected with electrical network, and outfan is connected with the input of step-down transformer,
One end of three filter capacitors is connected respectively to the outfan of three filter inductances, and the other end of electric capacity is interconnected to form one
Common port, common end grounding；
Described step-down transformer T1 has n secondary, when using the high pressure IGBT two-way switch as matrix array, fall
As long as 3 secondary of pressure transformer, when using the low pressure IGBT two-way switch as matrix array, step-down transformer needs 5 to 8
Secondary, the phase place of all secondary of step-down transformer is identical, without phase contrast；
The 1 row n that described three-phase three-phase matrix array A1-An is made up of n three-phase three-phase matrix converter
The matrix array of row, each of which three-phase three-phase matrix converter is corresponding to a secondary of step-down transformer, each
Individual three-phase three-phase matrix converter three-phase output through RC filtering and balance resistor network R11-R1n, R21-R2n and
After R31-R3n balance, being directly cascaded, form the output of three-phase high-voltage voltage, each matrix converter is connected with controller,
It is uniformly controlled regulation by controller；
Described three-phase three-phase matrix converter is by input filter LC1, three-phase three phase matrix, filtering RC
Loop R1C1-R3C3 forms, and described input filter LC1 is connected respectively by 3 inductance and 3 electric capacity, another of inductance simultaneously
End is connected to step-down transformer secondary, and the other end of electric capacity is shorted together, and ground connection；
Described three-phase three phase matrix is by 9 groups of bidirection switching device S11, S12, S13；S21、S22、S23；S31、S32、
S33 forms, and forms the matrix of 3*3, described bidirection switching device S11, S12, S13；S21、S22、S23；S31, S32, S33 have altogether
4 kinds of structures；
Described RC filter circuit is directly parallel in the U-V of three-phase three-phase matrixing unit, between V-W, W-U respectively
For R1C1, R2C2, R3C3, they and balance resistor network R11-R1n, R21-R2n, R31-R3n with the use of.
Described master controller, comprises synchronizing voltage detection panel, CPU operation control plate, pulsed drive division board, electricity
Stream voltage detecting plate, velocity measuring plate and logic circuit, synchronizing voltage detection panel gathers same by step-down transformer net end
Step voltage signal；The Hall element detection electric current of the current/voltage detection plate turnover line side by each matrix unit, voltage are real
Time signal；Velocity measuring plate is by the rate signal of the photoelectric encoder detection motor on motor；All signals are pooled to
CPU operation control plate, the panel two-way switch by calculating, in pulsed drive division board driving matrix permutation.Thus
Ensure amplitude and the three phase sine alternating current of frequency-adjustable that the final output voltage of converter is load needs, it is ensured that input current
For three phase AC sine wave.Simultaneously, it is ensured that energy can two-way flow.
Further, step-down transformer input high pressure three-phase alternating voltage, export the low pressure of isolation or corresponding to power device
Sub-high pressure three-phase alternating voltage, often group secondary three-phase alternating voltage is corresponding to a secondary three-phase secondary windings, three-phase secondary
The connection group of winding or phase place are identical, and the input of three-phase three-phase inverter unit corresponds respectively to step-down transformer
Secondary, its input for three-phase alternating voltage, is output as the three-phase alternating voltage of voltage and frequency-adjustable.Step-down transformer secondary
The quantity one_to_one corresponding of the three-phase three-phase inverter unit in the quantity of winding and matrix converter array, all changers
The transducer array of unit composition 1 row n row, each matrix converter unit is three-phase matrix converter, each matrixing
The three-phase output of device unit is filtered by RC and balances resistor network R11-R1n, and R21-R2n, R31-R3n directly connect, resistance
In network first resistance while linking together, its other end and other resistance are sequentially connected in series, so, the most defeated
Go out the three-phase alternating voltage of voltage and frequency-adjustable, it is thus achieved that the output voltage capability of multiplication, do not affect output voltage waveforms simultaneously,
Power converter cells quantity is the most, and the alternating voltage amplitude of output is the biggest.
Further, input filter is conventional high-pressure LC wave filter, between net side and step-down transformer, to input voltage
Being filtered with electric current, each three-phase matrixing unit includes three phase matrixs of a low voltage filter, a 3*3, low pressure
Primary voltage during matrix modulation is mainly filtered by wave filter, and it and inlet wire wave filter altogether, improve further simultaneously
Capacity of resisting disturbance, the modulation matrix of all three-phase matrixing unit is identical, and such system controls to simplify greatly, every phase
Each matrix unit output voltage amplitude, phase place are identical, are connected in parallel through RC filtering and balancing resistance R, and balancing resistance is
High voltage non-inductance resistor, they are sequentially connected in series, and are connected into the balancing resistance network that three-phase is star-like on the whole, and so, output voltage is connected
Impacting little, output voltage waveforms is adjustable sine wave.
Further, controller gather synchronizing voltage, each matrix unit changer into and out of line voltage x current, examine simultaneously
Survey speed and the electric current of motor, by controlling computing, by pulsed drive division board, drive the bidirectional power in matrix unit
Switch, so, according to the needs of load high voltage motor transmission, three-phase matrix converter array can export three-phase symmetrical
Fundamental voltage amplitude and frequency continuously adjustable high pressure SPWM (sinusoidal pulse width modulation) voltage, meet the transmission of load motor system
Need, obtain sine-shaped input current waveform at electrical network input simultaneously.Electrical network is polluted by system without harmonic current, flat
Electricity is all achieved between weighing apparatus resistor network and transducer array, transducer array and step-down transformer, step-down transformer and electrical network
The ability of energy two-way flow.
Further, all of three-phase matrix converter unit composition 1 row in described three-phase matrix converter array A1-An
The array structure of n row, the vice-side winding of step-down transformer is connected with three-phase matrix converter unit respectively, each changer list
The power take-off of unit, after RC filters, is connected in parallel in balancing resistance R, and balancing resistance is sequentially connected in series together again, on the whole
Being connected into star-like balancing resistance network R11-R1n, R21-R2n, R31-R3n, common point star-like in balancing resistance network is formed
The neutral point of output three-phase alternating voltage, is sequentially connected in series in balancing resistance network, and final three output connections form three-phase alternating current
Voltage exports, and during use, the three-phase input end with high-tension motor is connected, each matrix converter unit respectively by optical fiber and
Driving panel is connected, and is then received on controller by cable.
Further, described matrix converter is three-phase three-phase matrix converter, inputs three-phase alternating voltage, simultaneously
Output is also three-phase alternating voltage, 9 groups of bidirection switching device S11, S12, S13；S21、S22、S23；S31, S32, S33 form 3*
The matrix of 3, three-phase input voltage is Ua, Ub, Uc, and three-phase output voltage is Uu, Uv, Uw, then have an equation below: so just like
Lower formula:
RC wave filter of the present invention, is low pressure routine RC wave filter, and it is a filter capacitor C1, C2, C3 and one
Filter resistance R1, R2, R3 be directly cascaded, and then they are connected in parallel on three-phase three-phase matrix converter unit respectively
On three-phase voltage outlet terminal.RC wave filter is primarily in matrix course of action, filter off the harmonic wave of output；Meanwhile,
He also coordinates with balance resistor network, plays and ensures the output of all three-phase three-phase matrix converter unit or the voltage of feedback
Balance.
Further, described balancing resistance network R11-R1n, in R21-R2n, R31-R3n, the parallel connection respectively of each balancing resistance
On the three-phase voltage outlet terminal of three-phase three-phase matrix converter unit, and RC wave filter is connected in parallel, three-phase
In balancing resistance, the resistance that often balances each other is sequentially connected in series together, and in three-phase, the non-series connection end of first balancing resistance is connected with each other
Together, forming common port, such balancing resistance network R11-R1n, R21-R2n, R31-R3n are connected into Star Schema on the whole,
The three-phase alternating voltage that three-phase output amplitude superposition and phase place are identical with unit output phase place, in balancing resistance network, all of
Resistance is all high voltage non-inductance resistor, and resistance is identical.
Controller of the present invention, comprise synchronizing voltage detection panel, CPU operation control plate, pulsed drive division board,
Current/voltage detection plate, velocity measuring plate and logic circuit, synchronizing voltage detection panel is gathered by step-down transformer net end
Synchronous voltage signal；Hall element detection electric current, the voltage of the current/voltage detection plate turnover line side by each matrix unit
Live signal；Velocity measuring plate is by the rate signal of the photoelectric encoder detection motor on motor；All signals collect
To CPU operation control plate, the panel two-way switch by calculating, in pulsed drive division board driving matrix permutation.From
And ensure amplitude and the three phase sine alternating current of frequency-adjustable that the final output voltage of converter is load needs, it is ensured that input electricity
Stream is three phase AC sine wave.Simultaneously, it is ensured that energy can two-way flow.
The invention has the beneficial effects as follows: a kind of directly series connection three-phase matrix form medium-high voltage frequency converter that the present invention proposes, tool
Having a following outstanding advantages: 1, the present invention is for handing over matrix form Direct Conversion, output voltage is amplitude and frequency can continuously adjust
Three phase sine alternating voltage, input current is also three-phase alternating current sinusoidal current, and power factor is essentially 1；2, the present invention realizes
High voltage converter, energy can with two-way flow, system can four quadrant running, system structure is simple, and energy-saving effect is notable；3、
Step-down transformer simple in construction in the present invention, secondary group is identical, and phase place is identical.If using high pressure IGBT to do two-way
If device for power switching, step-down transformer secondary only needs 3 groups, can simplify step-down transformer structure further；4, this
Need not DC link in bright, this eliminate substantial amounts of electrochemical capacitor or self-healing electric capacity, system bulk is little, and reduces damage
Consumption.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the schematic diagram of three-phase matrix converter unit in Fig. 1；
Fig. 3 is common collector IGBT two-way power switch schematic diagram in Fig. 2；
Fig. 4 is common emitter IGBT two-way power switch schematic diagram in Fig. 2；
Fig. 5 is IGBT bridge-type two-way power switch schematic diagram in Fig. 2；
Fig. 6 is reverse blocking IGBT two-way power switch schematic diagram in Fig. 2；
Fig. 7 is input filter schematic diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is specifically described.Following example are to further illustrate the present invention, and
Do not constitute limitation of the invention.
Illustrating as a example by 3 secondary step-down transformers of band of present invention design, structure is as shown in Figure 1.Filtered by input
Ripple device LC, step-down transformer T1, matrixing array A1-A3, balancing resistance network R11-R1n, R21-R2n, R31-R3n and control
Device processed forms, and controller forms with man-machine interface communication.
Input filter LC, schematic diagram as it is shown in fig. 7, be made up of three filter inductances and three filter capacitors, three filters
The input of ripple inductance is connected on electrical network, and its outfan connects the former limit of three-phase of step-down transformer T1, three filter capacitors
One end outfan with three filter inductances respectively is connected, and the other end is connected with each other, and ground connection.
Step-down transformer T1 is shown in Fig. 1, is made up of a former limit of three-phase and three three-phase vice-side winding, and transformator connects group
For (Yd11, d11, d11) or (Dy11, y11, y11), the former limit of three-phase is defeated with three of the filter inductance in input filter LC
Going out end to be connected, three-phase vice-side winding is connected respectively to the three-phase input end of matrixing array (A1-A3).The 3 of step-down transformer
It is identical that individual vice-side winding connects group, and phase place is identical, and voltage is identical.
If Fig. 1 and Fig. 2, matrixing array A1-A3 are by 1 row * 3 row=3 three-phase three-phase matrix converter unit
Composition, the three-phase input end of each power converter cells is connected with step-down transformer secondary three-phase output end, each three-phase
After the three-phase output of matrix converter is filtered by RC, it is connected in parallel on balancing resistance network R11-R1n, R21-R2n, R31-respectively
In balancing resistance corresponding in R3n, balancing resistance is sequentially connected in series mutually, and 3 row matrix power converter cells outputs are filtered and balance
After resistance, three-phase entirety uses wye connection, forms three-phase high-voltage ac output end and neutral point N respectively, so, with regard to structure
Become direct series connection three-phase matrix form high voltage converter.Wherein, such as Fig. 2, matrix converter unit is three-phase matrix converter, by
Low voltage filter, three-phase three-phase matrix form, and low voltage filter LC1 is made up of conventional low voltage LC wave filter, three filtering
Inductance and three filter capacitors are connected respectively, and one end of inductance input with three-phase three phase matrix respectively is connected simultaneously,
The other end of electric capacity is shorted together, and ground connection.Three-phase three-phase matrix converter input three-phase alternating voltage, the most defeated
Going out also is three-phase alternating voltage, by 9 groups of bidirection switching device S11, S12, S13；S21、S22、S23；S31, S32, S33 form,
Forming the matrix of 3*3, three-phase input voltage is Ua, Ub, Uc, and three-phase output voltage is Uu, Uv, Uw, then have an equation below:
Bidirection switching device S11, S12, S13；S21、S22、S23；S31, S32, S33 are common just like Fig. 3, Fig. 4, Fig. 5, Fig. 6
Four kinds of different structures, the common collector two-way power switch that wherein Fig. 3 is made up of 2 fly-wheel diodes and 2 IGBT is former
Reason figure, the common emitter two-way power switch schematic diagram that Fig. 4 is made up of 2 fly-wheel diodes and 2 IGBT, Fig. 5 is by 4
The bridge-type two-way power switch schematic diagram that diode and 1 IGBT and 1 fly-wheel diode form, Fig. 6 is made up of 2 IGBT
Reverse blocking IGBT two-way power switch schematic diagram.
RC filter circuit is low pressure routine RC wave filter, and it is a filter capacitor C1, C2, C3 and a filter resistance
R1, R2, R3 are directly cascaded, then they to be connected in parallel on the three-phase voltage of three-phase three-phase matrix converter unit respectively defeated
Go out on terminals.RC wave filter is primarily in matrix course of action, filter off the harmonic wave of output；Meanwhile, he also and balances
Resistor network coordinates, and plays and ensures the output of all three-phase three-phase matrix converter unit or the balance of voltage of feedback.
Balancing resistance network R11-R13, in R21-R23, R31-R33, each balancing resistance is connected in parallel on three-phase three respectively
On the three-phase voltage outlet terminal of phase matrix power converter cells, and RC wave filter is connected in parallel, in three-phase equilibrium resistance, often
The resistance that balances each other is sequentially connected in series together, and in three-phase, the non-series connection end of first balancing resistance interconnects, and forms public affairs
Holding altogether, such balancing resistance network R11-R13, R21-R23, R31-R33 are connected into Star Schema on the whole, and three-phase output amplitude is folded
Add and the identical three-phase alternating voltage of phase place and unit output phase place.In balancing resistance network, all of resistance be all high pressure without
Sensing resistor, resistance is identical.
Controller comprises synchronizing voltage detection panel, CPU operation control plate, pulsed drive division board, current/voltage inspection
Drafting board, velocity measuring plate and logic circuit etc. form.Synchronizing voltage detection panel is synchronized by step-down transformer net end collection
Voltage signal；The Hall element detection electric current of the current/voltage detection plate turnover line side by each matrix unit, voltage are real-time
Signal；Velocity measuring plate is by the rate signal of the photoelectric encoder detection motor on motor；All signals are pooled to CPU
Operation control plate, the panel two-way switch by calculating, in pulsed drive division board driving matrix permutation.Thus ensure
The final output voltage of converter is that the amplitude that load needs exchanges with the three phase sine of frequency-adjustable and ensures that input current is three-phase
Hand over sine wave.Simultaneously, it is ensured that energy can two-way flow.
Input filter in the present invention, step-down transformer, three-phase matrix array, series connection isolating transformer and controller etc.
For inseparable ingredient, it is impossible to simple individually analysis, thus constitute directly series connection three-phase matrix form middle high-pressure frequency conversion
Device.
The operation principle of the present invention is as follows: use ripe matrix converter control algolithm to control directly series connection three
Phase three-phase matrixing matrix array.The input electricity of each series connection three-phase three-phase matrixing unit in matrix array
Pressure amplitude value and phase place are completely the same, use identical modulation matrix simultaneously, it is ensured that during every the most directly series connection, its voltage magnitude is identical,
Phase place is identical.So, after inlet wire high tension voltage is by filtering, through blood pressure lowering, then by three-phase three-phase matrixing list
After the modulation of unit's model identical, generate the three-phase alternating current sinusoidal voltage that amplitude is consistent with phase place, direct through isolating transformer
Series connection, is superimposed as the high pressure three-phase alternating voltage of phase invariant amplitude superposition at double.Owing to this high voltage converter uses matrix battle array
Row, use same phase is with the low voltage three-phase sinusoidal voltage superposition of amplitude simultaneously, and also inlet wire filtering and low-voltage filter
Link, so output voltage waveforms is almost without distortion, output voltage be amplitude and the continuously adjustable three-phase alternating current of frequency sinusoidal
Voltage, input current is three-phase alternating current sinusoidal current, and voltage, current harmonics are little, and du/dt is the least, power factor close to 1, energy
Amount can two-way flow, can four quadrant running, can directly drive mesohigh ac motor.Internal without rectifying and wave-filtering link, no
Needing jumbo electrochemical capacitor or self-healing electric capacity, system inversion efficiency is high.In sum, the three-phase of directly connecting of the present invention
Matrix form medium-high voltage frequency converter can be applied in mesohigh driving by A.C.motor field, including 2 quadrants, 4 quadrants of motor
Run, soft start runs, it is adaptable to high-power application scenario, has that system power factor is high, can run with 4 quadrants, defeated
Go out that voltage harmonic content is low, the continuously adjustable feature of output voltage amplitude frequency.
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.The technology of the industry
Personnel, it should be appreciated that the present invention is not restricted to the described embodiments, simply illustrating this described in above-described embodiment and description
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, and these become
Change and improvement both fall within scope of the claimed invention, claimed scope by appending claims and
Equivalent defines.
Claims (1)
1. a direct series connection three-phase matrix form medium-high voltage frequency converter, it is characterised in that: include inlet wire wave filter LC, downconverter
Device T1, three-phase three-phase matrix converter, balancing resistance network R11-R1n, R21-R2n and R31-R3n and master controller；
Described inlet wire wave filter LC is made up of three filter inductances and three filter capacitors, and three filter inductances are serially connected in three respectively
In phase incoming line, its input is connected with electrical network, and outfan is connected with the input of step-down transformer T1, three filter capacitors
The one end of each be connected respectively to each outfan of three filter inductances, the other end of every filter capacitor interconnects mutually
Connect one common port of formation, common end grounding；Three-phase three-phase matrix converter is by low voltage filter, three-phase three-phase matrix group
Becoming, low voltage filter LC1 is made up of conventional low voltage LC wave filter, three filter inductances in conventional low voltage LC wave filter and three
Filter capacitor is connected respectively, and one end of every filter inductance input with three-phase three phase matrix respectively is connected simultaneously, every
The other end of filter capacitor is shorted together, and ground connection, three-phase three-phase matrix converter input three-phase alternating voltage, simultaneously
Output is also three-phase alternating voltage, by 9 groups of bidirection switching device S11, S12, S13；S21、S22、S23；S31, S32, S33 group
Becoming, form the matrix of 3*3, three-phase input voltage is Ua, Ub, Uc, and three-phase output voltage is Uu, Uv, Uw, has an equation below:
Wherein,Being modulation matrix, it is the function of time, and each element is in each switch periods
It is all different, and all modulation matrixs of the three-phase three-phase matrix converter directly connected are identical, modulator approach
It is completely the same,
Described step-down transformer T1 has n secondary, when using two-way as three-phase three-phase matrix converter of high pressure IGBT
Switching device, if 3 secondary of step-down transformer, when using the low pressure IGBT two-way opened as three-phase three-phase matrix converter
Closing device, step-down transformer needs 5 to 8 secondary, and the phase place of all secondary of step-down transformer is identical, without phase contrast；
The square of the 1 row n row that three-phase three-phase matrix converter array A1-An is made up of n three-phase three-phase matrix converter
A burst of row, each of which three-phase three phase matrix is corresponding to a secondary of step-down transformer, each three-phase three-phase square
The three-phase of battle array changer exports after RC filter circuit and balance resistor network R11-R1n, R21-R2n and R31-R3n balance,
Directly being cascaded, form the output of three-phase high-voltage voltage, each three-phase three-phase matrix converter is connected with master controller, by
Master controller is uniformly controlled regulation；
Bidirection switching device S11, S12, S13；S21、S22、S23；S31, S32, S33 have totally 4 kinds of structures；RC filter circuit is direct
Being connected in parallel on the U-V of three-phase three-phase matrix converter, between V-W, W-U, it is respectively R1C1, R2C2, R3C3, and and balance
Resistor network R11-R1n, R21-R2n, R31-R3n with the use of；
Described master controller, comprises synchronizing voltage detection panel, CPU operation control plate, pulsed drive division board, current/voltage
Detection plate, velocity measuring plate and logic circuit, described balancing resistance network R11-R1n, R21-R2n and R31-R3n parallel connection respectively
At the three-phase outlet terminal of three-phase three-phase matrix converter, balancing resistance network R11-R1n, R21-R2n and R31-R3n hinder
Being worth identical, resistance is the noninductive big resistance of high pressure, and it coordinates with the RC filter circuit of each three-phase three-phase matrix converter,
Described balancing resistance network R11-R1n, in R21-R2n, R31-R3n, each balancing resistance network is connected in parallel on three-phase three respectively
On the three-phase voltage outlet terminal of phase matrix changer, and RC filter circuit is connected in parallel, in three-phase equilibrium resistor network,
The resistor network that often balances each other is sequentially connected in series together, and in three-phase, the non-series connection end of every first balancing resistance network mutually is connected with each other
Together, common port is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410203075.XA CN103956912B (en) | 2014-05-15 | 2014-05-15 | A kind of directly series connection three-phase matrix form medium-high voltage frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410203075.XA CN103956912B (en) | 2014-05-15 | 2014-05-15 | A kind of directly series connection three-phase matrix form medium-high voltage frequency converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103956912A CN103956912A (en) | 2014-07-30 |
| CN103956912B true CN103956912B (en) | 2016-08-17 |
Family
ID=51334155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410203075.XA Active CN103956912B (en) | 2014-05-15 | 2014-05-15 | A kind of directly series connection three-phase matrix form medium-high voltage frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103956912B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1773802A (en) * | 2005-11-01 | 2006-05-17 | 清华大学 | Matrix type converter fault protecting method and circuit for supporting fault-tolerant operation |
| CN1988351A (en) * | 2006-12-07 | 2007-06-27 | 上海交通大学 | Cascade multiple zero matrix converter |
| CN101461123A (en) * | 2006-05-24 | 2009-06-17 | 株式会社明电舍 | High-voltage ac direct power converter |
| CN103178720A (en) * | 2013-03-08 | 2013-06-26 | 卧龙电气集团股份有限公司 | High-voltage matrix converter |
| CN103795268A (en) * | 2012-10-30 | 2014-05-14 | 株式会社安川电机 | Matrix converter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5013283B2 (en) * | 2010-02-17 | 2012-08-29 | 株式会社安川電機 | Control device for matrix converter |
-
2014
- 2014-05-15 CN CN201410203075.XA patent/CN103956912B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1773802A (en) * | 2005-11-01 | 2006-05-17 | 清华大学 | Matrix type converter fault protecting method and circuit for supporting fault-tolerant operation |
| CN101461123A (en) * | 2006-05-24 | 2009-06-17 | 株式会社明电舍 | High-voltage ac direct power converter |
| CN1988351A (en) * | 2006-12-07 | 2007-06-27 | 上海交通大学 | Cascade multiple zero matrix converter |
| CN103795268A (en) * | 2012-10-30 | 2014-05-14 | 株式会社安川电机 | Matrix converter |
| CN103178720A (en) * | 2013-03-08 | 2013-06-26 | 卧龙电气集团股份有限公司 | High-voltage matrix converter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103956912A (en) | 2014-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101707443B (en) | Novel electric power electric transformer | |
| CN104953582B (en) | A kind of three phase network disturbing generating device and its control method | |
| CN101030733B (en) | Multi-level power converter of light unit cascade | |
| CN102520218B (en) | Programmable trouble power simulator | |
| CN102157940B (en) | Device for eliminating voltage harmonics of power system | |
| CN105406499A (en) | Intelligent hybrid direct current power transmission system and fault handling method | |
| CN103269171B (en) | High power cascade type diode H-bridge unit power factor rectifier | |
| CN107134930B (en) | Power electronics distribution transformer and its control method based on MMC | |
| CN102798819B (en) | High-voltage motor type test system | |
| CN105703689B (en) | The two-way frequency conversion speed-adjusting system of high-power brushless double-fed three level of machine | |
| CN102223099A (en) | Adaptive three-phase balanced control cascaded three-phase bridge converter | |
| CN101938127A (en) | Single-phase and three-phase dual buck full-bridge parallel active power filter | |
| CN104065279A (en) | Voltage disturbance generation device and method for simulating power grid disturbance | |
| CN204720981U (en) | A kind of three phase network disturbing generating device | |
| CN105717399A (en) | Test device for power grid adaptability | |
| CN102437575B (en) | Medium-and-high-voltage unified power quality controller (UPQC) without transformer | |
| CN102638047A (en) | Three-phase unified power quality control device with bypass switches | |
| CN104767218B (en) | Direct-current power flow controller | |
| CN201813163U (en) | Full-bridge parallel active power filter in single-phase and three-phase single-power tube bridge arm structures | |
| CN103956912B (en) | A kind of directly series connection three-phase matrix form medium-high voltage frequency converter | |
| CN204190640U (en) | High-power Mixed cascading bridge-type Unity Power Factor PWM Rectifier Based | |
| CN201994667U (en) | Device for removing voltage harmonics in electric power system | |
| CN203166545U (en) | Elevator energy feedback circuit having LCL filtering function | |
| CN103956910B (en) | A kind of three-phase of series connection indirectly matrix form medium-high voltage frequency converter | |
| CN104184350A (en) | Large-power mixed cascading bridge-type unit power factor rectifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Direct series-connection three-phase matrix type middle-high voltage frequency converter Effective date of registration: 20191204 Granted publication date: 20160817 Pledgee: Xi'an innovation financing Company limited by guarantee Pledgor: The electric Company Limited by Shares in Riyadh, Xi'an Registration number: Y2019990000654 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20211116 Granted publication date: 20160817 Pledgee: Xi'an innovation financing Company limited by guarantee Pledgor: XI'AN LEADI ELECTRIC AUTOMATION CO.,LTD. Registration number: Y2019990000654 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A direct series three-phase matrix medium and high voltage converter Effective date of registration: 20211203 Granted publication date: 20160817 Pledgee: Xi'an innovation financing Company limited by guarantee Pledgor: XI'AN LEADI ELECTRIC AUTOMATION CO.,LTD. Registration number: Y2021610000387 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |