CN207743877U - A kind of double down pressure booster type AC-AC converter modules - Google Patents
A kind of double down pressure booster type AC-AC converter modules Download PDFInfo
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Abstract
The double down pressure booster type AC AC converter modules of one kind belonging to distribution network operation distribution voltage-regulating technique field, more particularly to a kind of double down pressure booster type AC AC converter modules.The utility model provides a kind of safe and reliable double down pressure booster type AC AC converter modules.The utility model includes the first double down pressure/booster type AC AC converter modules and the second double down pressure/booster type AC AC converter modules, and the first double down pressure of structural feature/booster type AC AC converter modules include filter inductance Lf1, capacitance C1, switching tube S1, diode D1, diode D2, coupled inductor CL1, switching tube S2, switching tube S3, diode D3, capacitance C2, coupled inductor CL2, diode D4, switching tube S4。
Description
Technical field
The utility model belongs to distribution network operation distribution voltage-regulating technique field, more particularly to a kind of double down pressure booster type AC-
AC converter modules.
Background technology
With the rapid development of the national economy, load growth is rapid, Voltage Drop and the voltage of power distribution network, which jump, etc. causes
Distribution network electric energy quality compromises become increasingly conspicuous.Falling and jumping for voltage can influence the normal work of user power utilization equipment
Make, especially the safe and stable operation of the sensitive loads such as industrial stokehold, precision instrument and computer system.Although power distribution network
Quality of voltage problem receives prodigious attention, but is currently filled by reactive-load compensation in the practical application of power distribution network pressure regulation
Set has the problems such as limited voltage regulation limits, bad adaptability, low sensitivity with load tap changer pressure regulation, cannot be satisfied voltage
The requirement of real-time tracking compensation, to some precision instruments, sensitive equipment and is not suitable for；Although Dynamic Voltage Regulator may be implemented
To the function of electrical equipment voltage real-time monitoring, but voltage regulation limits are limited, do not accomplish yet depth, it is long when voltage adjust,
And the presence of DC energy storage unit increases equipment volume and cost.Based on this, it is necessary to fall for current distribution network voltage
Power quality problem caused by falling or jumping provides a kind of novel, practical, efficient, precise and stable low-voltage distribution
Net voltage regulating device.
Invention content
The utility model provides a kind of safe and reliable double down pressure booster type AC-AC converters aiming at the above problem
Module.
To achieve the above object, the utility model adopts the following technical solution, the utility model include the first double down pressure/liter
Die mould AC-AC converter modules and the second double down pressure/booster type AC-AC converter modules, the first double down pressure of structural feature/liter
Die mould AC-AC converter modules include filter inductance Lf1, capacitance C1, switching tube S1, diode D1, diode D2, coupling inductance line
Enclose CL1, switching tube S2, switching tube S3, diode D3, capacitance C2, coupled inductor CL2, diode D4, switching tube S4；
The second double down pressure/booster type AC-AC converter modules include filter inductance Lf2, capacitance C3, switching tube S5, two
Pole pipe D5, diode D6, coupled inductor CL3, switching tube S6, switching tube S7, diode D7, capacitance C4, coupled inductor
CL4, diode D8, switching tube S8；
Inductance Lf1One end is connected with power frequency double the first secondary sides of transformer with split winding one end, inductance Lf1The other end respectively with capacitance C1
One end, switching tube S1Collector, diode D1Cathode is connected, switching tube S1Emitter respectively with diode D2Cathode, coupling inductance
Coil CL1First inductance one end is connected, coupled inductor CL1The first inductance other end respectively with coupled inductor CL1Second
Inductance one end, inductance L are connected, coupled inductor CL1The second inductance other end respectively with switching tube S2Collector, diode D1
Anode is connected；
Switching tube S2Emitter respectively with switching tube S3Emitter, diode D2Anode, diode D3Anode, capacitance C1It is another
End, capacitance C2One end is connected, switching tube S3Collector respectively with coupled inductor CL2First inductance one end, diode D4Anode
It is connected, coupled inductor CL2The first inductance other end respectively with coupled inductor CL2Second inductance one end, coupling inductance line
Enclose CL3First inductance one end, coupled inductor CL3Second inductance one end is connected, coupled inductor CL2Second inductance is another
End respectively with diode D3Cathode, switching tube S4Emitter is connected, switching tube S4Collector respectively with capacitance C2The other end, two poles
Pipe D4Double the first secondary side of the transformer with split winding other ends of cathode, power frequency are connected；
Inductance Lf2One end is connected with power frequency double the second secondary sides of transformer with split winding one end, inductance Lf2The other end respectively with capacitance
C3One end, switching tube S5Collector, diode D5Cathode is connected, switching tube S5Emitter respectively with diode D6Cathode, coupling electricity
Feel coil CL3The first inductance other end is connected, coupled inductor CL3The second inductance other end respectively with switching tube S6Collector,
Diode D5Anode is connected；
Switching tube S6Emitter respectively with switching tube S7Emitter, diode D6Anode, diode D7Anode, capacitance C3It is another
End, capacitance C4One end is connected, switching tube S7Collector respectively with coupled inductor CL4First inductance one end, diode D8Anode
It is connected, coupled inductor CL4The first inductance other end respectively with coupled inductor CL4Second inductance one end, capacitance C are connected,
Coupled inductor CL4The second inductance other end respectively with diode D7Cathode, switching tube S8Emitter is connected, switching tube S8Collection
Electrode respectively with capacitance C4The other end, diode D8Double the second secondary side of the transformer with split winding other ends of cathode, power frequency are connected.
As a preferred embodiment, switching tube S described in the utility model1, switching tube S2, switching tube S3, switching tube S4, open
Close pipe S5, switching tube S6, switching tube S7, switching tube S8Using full-control type power switch tube.
As another preferred embodiment, switching tube S described in the utility model1, switching tube S2, switching tube S3, switching tube S4、
Switching tube S5, switching tube S6, switching tube S7, switching tube S8Carry anti-paralleled diode.
Secondly, full-control type power switch tube described in the utility model uses insulated gate bipolar transistor IGBT.
In addition, IGBT drivers described in the utility model use 2SC0435T drivers.
The utility model advantageous effect.
The double down pressure of the utility model/booster type AC-AC converter modules use novel topological structure, solve traditional AC-
The Commutation Problem of AC converters can guarantee safe and reliable operation input voltage or current harmonic content are big, distortion is big.
One end of the 2 double down pressures/booster type AC-AC converter modules is connected with two windings of double transformer with split winding low-pressure sides respectively
It connects, the other end is linked together two modules by concatenated mode, and the output end of 2 modules is connect so with L, C filter
Series connection access power grid afterwards.
Double down pressure/booster type AC-AC converter topologies structure in the utility model is with reference to shown in Fig. 2, and the converter is by 2
A identical module composition, module 1 is by 1 LfInput filter, 2 capacitor (C1、C2), 2 coupled inductor (CL1、
CL2), 4 bridge arms (bridge arm 1,2,3,4 with reference to shown in Fig. 2) constitute full bridge structures.Every 2 bridge arms constitute a H-bridge unit, right
It in H-bridge unit, is made of bridge arm (2,4) after a preceding bridge arm (1,3) and one, preceding bridge arm carries inverse parallel two by 1 respectively
Full-control type power switch tube (the S of pole pipe1、S4) and 1 diode (D2、D3) be reversely connected in series to form, full-control type power switch tube
Emitter be connected with the negative polarity of diode；Bridge arm is opened by the 1 full-control type power with anti-paralleled diode respectively afterwards
Close pipe (S2、S3) and 1 diode (D1、D4) be reversely connected in series to form, the collector of full-control type power switch tube and diode
Positive polarity is connected, and the full-control type power switch tube preferably selects igbt (IGBT).On each H bridge arms
All in parallel there are one capacitor C, and the purpose is to when all full-control type power switch tubes are all opened or are turned off, can be electric current
Energy channel is provided.In addition, 2 coupling inductance (CL1、CL2) be connected respectively with upper and lower two H bridge arms, module 2 uses and mould
1 identical topological structure of block, so repeating no more.The input terminal of the 2 modules low-pressure side with the double transformer with split windings of power frequency respectively
Connection is connected with L, C low-pass filter again after the output end series connection of 2 modules, realizes input series connection output in parallel.By
The single-stage power conversion of bipolar voltage AC to AC may be implemented in the module, so improving entire pressure regulator using the module
Efficiency.In addition, compared with traditional AC-AC converters, it being capable of the effective solution change of current by the AC-AC converters of the module composition
Problem, or even AC-AC converters also can be reliable and stable when input voltage/electric current has distortion operation.Become with traditional AC-AC
Parallel operation module is compared, and the mould 2 capacitor C in the block are to provide flow cycle for the electric current in coupling inductance, when full-control type work(
When rate switching tube is turned off, therefore the mould 2 capacitor C in the block do not need voltage balancing control.
Description of the drawings
The utility model is described further with reference to the accompanying drawings and detailed description.Scope of protection of the utility model
It is not only limited to the statement of the following contents.
Fig. 1 is power distribution network single-phase voltage regulating structural schematic diagram provided by the utility model.
Fig. 2 is a kind of power distribution network pressure regulation topology diagram provided by the utility model.
Fig. 3 is schematic diagram when the utility model adjusts Voltage Drop.
Fig. 4 is schematic diagram when the utility model adjusting voltage jumps.
Fig. 5 is the three phase voltage regulating structural schematic diagram of the utility model.
Fig. 6 is that the utility model dsp control signal moves towards figure.
Fig. 7 is the double down pressure of the utility model/booster type AC-AC converter module modulated signal schematic diagrames.
Fig. 8-1, Fig. 8-2, Fig. 8-3, Fig. 8-4, Fig. 8-5, Fig. 8-6, Fig. 8-7, Fig. 8-8 are the utility model DSP controls systems
System power module circuit schematic.
Fig. 9-1, Fig. 9-2, Fig. 9-3, Fig. 9-4 are the leaded molded circuit theories of the utility model DSP control system dsp chip
Figure.
Figure 10-1, Figure 10-2, Figure 10-3 are the leaded molded circuit diagrams of the utility model DSP control system dsp chip.
Figure 11-1, Figure 11-2, Figure 11-3, Figure 11-4 are the utility model DSP control system No. eight buffer/circuit drivings
Device circuit diagram.
Figure 12-1, Figure 12-2, Figure 12-3 are the utility model DSP control system AD conversion module circuit diagrams.
Figure 13-1, Figure 13-2, Figure 13-3, Figure 13-4, Figure 13-5, Figure 13-6, Figure 13-7, Figure 13-8 are the utility model
DSP control system AD external sampling module circuit schematics.
Figure 14-1, Figure 14-2, Figure 14-3, Figure 14-4, Figure 14-5 are the utility model DSP control system circuit diagrams.
Figure 15-1, Figure 15-2, Figure 15-3, Figure 15-4 are the utility model DSP control system AD internal sample circuit theories
Figure.
Figure 16-1, Figure 16-2, Figure 16-3, Figure 16-4, Figure 16-5, Figure 16-6 are the utility model DSP control system circuits
Schematic diagram.
Figure 17-1, Figure 17-2 are the utility model DSP control system connecting terminal circuit diagrams.
Specific implementation mode
As shown, the utility model can be applied to the power distribution network distributed flexible pressure regulation topology based on AC-AC converters
Structure, the power distribution network distributed flexible pressure regulation topological structure based on AC-AC converters include the double transformer with split winding of power frequency, first pair
Buck/boost type AC-AC converter modules, the second double down pressure/booster type AC-AC converter modules, inductance L, capacitance C and bypass
Switch S, double the first secondary sides of transformer with split winding of power frequency are connected with the first double down pressure/booster type AC-AC converter module input terminals, work
Double the second secondary sides of transformer with split winding of frequency are connected with the second double down pressure/booster type AC-AC converter module input terminals, and first is double down
Pressure/converter module output end one end booster type AC-AC is connected with the one end capacitance C, the one end by-pass switch S respectively by inductance L,
First double down pressure/booster type AC-AC converter module output end other ends and the second double down pressure/booster type AC-AC converter moulds
Block output end one end is connected, and the second double down pressure/booster type AC-AC converter module output end other ends are another with capacitance C respectively
End, the by-pass switch S other ends are connected；
The secondary end position of the same name while with the second pair of the double transformer with split windings first of the power frequency is different, first pair of buck/boost
The polarity of type AC-AC converter modules and the second double down pressure/booster type AC-AC converter module input voltages is different.
The power distribution network distributed flexible pressure regulation topological structure of the direct AC-AC converters of the utility model, range of regulation is big,
Precision is high, and in the case where not changing existing distribution network structure structure, so that it may with reach adjust distribution network voltage fall or
The purpose that person jumps improves power supply quality to ensure the qualification rate of user's terminal voltage.
The double transformer with split windings of power frequency are taken into the side connected and be coupled with 2 double down pressures/booster type AC-AC converter modules
Formula realizes the single-stage power conversion of bipolar voltage AC to AC.In addition, access power grid of being connected, does not change existing
Grid structure, can either falling for offset voltage also can compensate for jumping for voltage.In addition, as a result of double buck/boosts
Type AC-AC converter modules no longer need to use two-way switch, solve the Commutation Problem of traditional AC-AC converters.
The utility model power frequency transformer with split winding uses double dual low voltage transformers of two windings of secondary side, double Split types to become
Depressor high-pressure side is connect with a certain be in parallel of power distribution network, and low-pressure side is connected with double down pressure/booster type AC-AC converter modules,
And two division Motor Winding Same Name of Ends positions of low-pressure side are different, realize that the polarity of input voltage is different, reaching can offset voltage
Fall and can the purpose that jumps of offset voltage.
The utility model L, C filter is used to filter out the harmonic high frequency generated by double down pressure/booster type AC-AC converter modules
Wave component improves the quality of regulator output voltage.Wherein, the by-pass switch S can ensure the switching fortune of regulator
Row makes regulator work in voltage compensation mode according to the selection of the practical operation situation of power grid and is also operate on bypass mode.
The single-stage power conversion of bipolar voltage AC to AC may be implemented in the utility model, and conversion efficiency is high.And directly
The transformation of AC to AC eliminates intermediate DC link, and the volume and cost of device can all substantially reduce.
Regulator series connection access power grid based on the carried topological structure of the utility model, does not change existing power distribution network
Grid structure, can either falling for offset voltage also can compensate for jumping for voltage, realize distribution voltage regulation and control purpose.This
Outside, institute's promoting or transferring pressure device can accomplish that range of regulation is big, regulation precision is high, and can accomplish depth, it is long when adjusting voltage.
The utility model efficiently solves traditional AC-AC as a result of double down pressure/booster type AC-AC converter modules
The Commutation Problem of converter, or even when input voltage or electric current have prodigious distortion, institute's promoting or transferring pressure device remains to reliable steady
Fixed operation, the problem of change of current will not occur.In addition, the capacitance of double down pressure/booster type AC-AC converter input sides need not be into
The balance of row voltage controls, and reduces the complexity of convertor controls.
On the one hand the double transformer with split windings of the power frequency play the role of electrical isolation, on the other hand can be double down pressure/liter
Die mould AC-AC converter modules provide input voltage, wherein the double transformer with split winding high-pressure side of the power frequency and power distribution network is a certain
Parallel single-phase connects, and two windings of low-pressure side are connect with double down pressure/booster type AC-AC converter modules respectively, and low-pressure side
The end position of the same name of two windings is different, therefore the double transformer with split windings of power frequency can be double down pressure/booster type AC-AC converter moulds
Block provides polarity different input voltages, realizes that pressure regulator can either adjust jumping for voltage and can also adjust falling for voltage.
The first double down pressure/booster type AC-AC converter modules include filter inductance Lf1, capacitance C1, switching tube S1, two
Pole pipe D1, diode D2, coupled inductor CL1, switching tube S2, switching tube S3, diode D3, capacitance C2, coupled inductor
CL2, diode D4, switching tube S4；
The second double down pressure/booster type AC-AC converter modules include filter inductance Lf2, capacitance C3, switching tube S5, two
Pole pipe D5, diode D6, coupled inductor CL3, switching tube S6, switching tube S7, diode D7, capacitance C4, coupled inductor
CL4, diode D8, switching tube S8；
Inductance Lf1One end is connected with power frequency double the first secondary sides of transformer with split winding one end, inductance Lf1The other end respectively with capacitance C1
One end, switching tube S1Collector, diode D1Cathode is connected, switching tube S1Emitter respectively with diode D2Cathode, coupling inductance
Coil CL1First inductance one end is connected, coupled inductor CL1The first inductance other end respectively with coupled inductor CL1Second
Inductance one end, inductance L are connected, coupled inductor CL1The second inductance other end respectively with switching tube S2Collector, diode D1
Anode is connected；
Switching tube S2Emitter respectively with switching tube S3Emitter, diode D2Anode, diode D3Anode, capacitance C1It is another
End, capacitance C2One end is connected, switching tube S3Collector respectively with coupled inductor CL2First inductance one end, diode D4Anode
It is connected, coupled inductor CL2The first inductance other end respectively with coupled inductor CL2Second inductance one end, coupling inductance line
Enclose CL3First inductance one end, coupled inductor CL3Second inductance one end is connected, coupled inductor CL2Second inductance is another
End respectively with diode D3Cathode, switching tube S4Emitter is connected, switching tube S4Collector respectively with capacitance C2The other end, two poles
Pipe D4Double the first secondary side of the transformer with split winding other ends of cathode, power frequency are connected；
Inductance Lf2One end is connected with power frequency double the second secondary sides of transformer with split winding one end, inductance Lf2The other end respectively with capacitance
C3One end, switching tube S5Collector, diode D5Cathode is connected, switching tube S5Emitter respectively with diode D6Cathode, coupling electricity
Feel coil CL3The first inductance other end is connected, coupled inductor CL3The second inductance other end respectively with switching tube S6Collector,
Diode D5Anode is connected；
Switching tube S6Emitter respectively with switching tube S7Emitter, diode D6Anode, diode D7Anode, capacitance C3It is another
End, capacitance C4One end is connected, switching tube S7Collector respectively with coupled inductor CL4First inductance one end, diode D8Anode
It is connected, coupled inductor CL4The first inductance other end respectively with coupled inductor CL4Second inductance one end, capacitance C are connected,
Coupled inductor CL4The second inductance other end respectively with diode D7Cathode, switching tube S8Emitter is connected, switching tube S8Collection
Electrode respectively with capacitance C4The other end, diode D8Double the second secondary side of the transformer with split winding other ends of cathode, power frequency are connected.
The switching tube S1, switching tube S2, switching tube S3, switching tube S4, switching tube S5, switching tube S6, switching tube S7, switch
Pipe S8Using full-control type power switch tube.
The inductance Lf1Connecting pin, inductance L with double the first secondary sides of transformer with split winding of power frequencyf2With the double division transformations of power frequency
The connecting pin on the secondary side of device second is different name end.
The inductance L uses 400 μ H inductance, and the frequency of switching tube is 20kHz, and capacitance C capacitances are μ F.Power inverter
Inductive current ripple maximum occurrences are generally 10% to the 30% of current peak, and current ripple Δ imax is：
Wherein V0For filter input side voltage, TsFor switch periods, it is 400 μ H that can choose High frequency filter inductance L according to formula；Due to
The power switch tube frequency that experiment uses is 20kHz, cutoff frequency frIt is 10% to the 20% of switching tube frequency, filter inductance takes
Value is 400 μ H, according to resonance equationCapacitance is acquired, in conjunction with calculated value and experiment and emulation, final L, C filtering
The inductance value and capacitance of device are chosen for 400 μ H, 20 μ F respectively, and the parameter finally chosen makes L, C body designed
Small, the at low cost, good wave filtering effect of product.
The double transformer with split winding primary side of the power frequency, first it is secondary while, second it is secondary while no-load voltage ratio be N1：N2：N3=4：3：1.At present
Voltage Drop accounts about 92% in 10/0.4kV distribution network voltage fluctuation problems, and voltage jumps and only accounts for small part, and
And the amplitude of Voltage Drop is more much larger than the amplitude that voltage jumps.Therefore, the no-load voltage ratio design of the double transformer with split windings of the power frequency
For N1：N2：N3=4：3：1, the actual needs of distribution network voltage adjusting on the one hand can be met using no-load voltage ratio design；Another party
Face can reduce the volume and cost of the double transformer with split windings of power frequency.
The switching tube S1, switching tube S2, switching tube S3, switching tube S4, switching tube S5, switching tube S6, switching tube S7, switch
Pipe S8Carry anti-paralleled diode.
The full-control type power switch tube uses insulated gate bipolar transistor IGBT.
Described when network voltage fluctuates, by-pass switch S is opened, and regulator works in compensation model, is generated same
The offset voltage U of phaseC, load side voltage ULoadEqual to network voltage UinWith offset voltage UCAlgebraical sum；When network voltage not
When fluctuating, by-pass switch S is closed, and regulator works in bypass mode, and the voltage of load side is equal to power grid electricity at this time
Pressure.L, C filter is connected with the output end of double down pressure/booster type AC-AC converters, for filter out by double down pressure/liter
The high-frequency harmonic ingredient that die mould AC-AC converter modules generate, with offset voltage quality caused by guarantee.The by-pass switch
S makes regulator work in voltage according to the selection of the practical operation situation of power grid and mends for ensureing that the switching of regulator is run
It repays pattern and is also operate on bypass mode.With reference to shown in Fig. 3, when network voltage fluctuates, by-pass switch S is opened, pressure regulation
Device works in compensation model, generates the offset voltage U of same-phaseC.Therefore, load side voltage ULoadEqual to network voltage UinWith
Offset voltage UCAlgebraical sum ensure that the qualification rate of supply voltage to ensure that the stabilization of load side voltage；When power grid electricity
When pressure does not fluctuate, by-pass switch S is closed, and regulator works in bypass mode, and the voltage of load side is equal to electricity at this time
Net voltage.
The double down pressure/booster type AC-AC converter modules are more double down than unipolar PWM, first using double modulation
Pressure/booster type AC-AC converter modules, the modulation ratio of the second double down pressure/booster type AC-AC converter modules are respectively d1、d2,
The offset voltage of generation is：
When modulation ratio is 0, the offset voltage that double down pressure/booster type AC-AC converters generate is 0；When modulation is not equal to 0
When, double down pressure/booster type AC-AC converters generate offset voltage UC；With reference to shown in Fig. 3, when grid side voltage falls,
Regulator generates the voltage of same-phase to adjust voltage, and by-pass switch S (can pass through manual control switch) is opened, regulator work
In offset voltage pattern；At this point, the collected load side crest voltage U of voltage peak detectorLoadmWith reference voltage peak value
Urefm(UrefmEqual to power grid rated voltage peak value) it is made the difference, a difference DELTA U is obtained, then passes through pi regulator and generates phase
The duty ratio answered controls the first double down pressure/booster type AC-AC converter modules, second double down pressure/booster type by DSP respectively
The modulation ratio d of AC-AC converter modules1、d2The offset voltage of same-phase is generated for a suitable value.It is mould with reference to shown in Fig. 3
The modulation ratio of block 1 is d1, the modulation ratio of module 2 is d2Working condition topology diagram when=0, those skilled in the art according to
It is respectively d that can significantly know in two modulation ratios with reference to Fig. 31、d2Under four kinds of working conditions.
When voltage on line side jumps, regulator needs to generate the voltage of same-phase to adjust voltage, by-pass switch S
It opens, regulator works in offset voltage pattern, respectively the modulation ratio d of control module 1 and module 21、d2It is suitable for one
Value generates the offset voltage of same-phase.It is d with reference to the modulation ratio that Fig. 4 is module 11=0, the modulation ratio of module 2 is d2When work
State topology structure chart, those skilled in the art are respectively d according to can significantly know in two modulation ratios with reference to Fig. 41、
d2Under four kinds of working conditions.
The utility model three-phase electricity, which is often in series, accesses the double down pressure booster type AC-AC converter modules of an one kind.Fig. 5 is
The utility model, can be expanded to three phase voltage regulating by the three phase voltage regulating structural schematic diagram of the utility model, and each phase is individually connected
(three the utility model single-phase voltage regulating structures, three lists are respectively set in the distributed flexible regulator of access the utility model
Phase pressure adjusting structure is between each other without contact), three phase voltage regulating device is not interfere with each other between phase and phase, is worked independently, and each phase all may be used
To adjust falling or jumping for voltage, to realize the distributed flexible pressure regulation of entire power distribution network, ensure user side voltage matter
Amount and rate of qualified voltage.
The DSP sends out pwm signal and drives IGBT pipes by IGBT drivers.
The pwm signal is to compare generation by modulating wave and carrier wave.
As shown in fig. 6, dsp controller sends out pwm signal, (pwm signal that dsp controller is sent out is by modulating wave and load
Wave compares generation, and the modulated signal of one of module is as shown in Figure 7), sent out pwm signal is transmitted to IGBT drivers,
Driver controls turning on and off for IGBT switching tubes according to the signal received.
The IGBT drivers use 2SC0435T drivers.
The DSP using TMS320F28335 chips U500, U500 74 feet pass sequentially through resistance R239, resistance R236 with
2 feet of U500 are connected, and 75 feet of U500 pass sequentially through resistance R238, resistance R237 and are connected with 141 feet of U500；
113 feet of U500 are connected with 1 foot of 74ACT541 chips U7,19 feet of U7, the one end resistance R30 respectively, resistance R30
Another termination V3.3DP power supplys；
114 feet of U500 are connected with 1 foot of 74ACT541 chips U8,19 feet of U8, the one end resistance R43 respectively, resistance R43
Another termination V3.3DP power supplys；
2~7 feet of U7 are correspondingly connected with 5,6,7,10,11, the 12 of U500 respectively, and 8 feet of U7 are grounded by resistance R39,
9 feet of U7 are grounded by resistance R40, and 20 feet of U7 are connected with power supply V5DP, the one end capacitance C44 respectively, another terminations of capacitance C44
Ground；
2~7 feet of U8 are correspondingly connected with 13,16,17,18,19, the 20 of U500 respectively, and 8 feet of U8 are connect by resistance R41
9 feet on ground, U8 are grounded by resistance R42, and 20 feet of U8 are connected with power supply V5DP, the one end capacitance C45 respectively, and capacitance C45 is another
End ground connection.
The utility model further includes indicating section, and indicating section includes light emitting diode D12, light emitting diode D13, shines
The anode of diode D31, light emitting diode D32, light emitting diode D12 are connected by resistance R85 with V3.3DP power supplys, and luminous two
The cathode of pole pipe D12 is connected with NPN triode Q3 collectors, and triode Q3 base stages are connected with 153 feet of U500, triode Q3 hairs
Emitter grounding；
The anode of light emitting diode D13 is connected by resistance R86 with V3.3DP power supplys, the cathode of light emitting diode D13 with
NPN triode Q4 collectors are connected, and triode Q4 base stages are connected with 156 feet of U500, triode Q4 emitters ground connection；
The anode of light emitting diode D31 is connected by resistance R119 with V3.3DP power supplys, the cathode of light emitting diode D12 with
NPN triode Q21 collectors are connected, and triode Q21 base stages are connected with 157 feet of U500, triode Q21 emitters ground connection；
The anode of light emitting diode D32 is connected by resistance R120 with V3.3DP power supplys, the cathode of light emitting diode D32 with
NPN triode Q22 collectors are connected, and triode Q22 base stages are connected with 158 feet of U500, triode Q22 emitters ground connection.
The utility model further includes AD conversion part, and AD conversion part includes AD7865 chip U505, AD7865 chips U
1 foot of 512 and SN74LVTH162245DGGR chips U506, U505 are connected with 162 feet of U500,3 feet of U505 and U500's
175 feet are connected, and 4 feet of U505 are connected with 1 foot of 74V1G08 chips U513, and 5 feet of U505 are connected with 149 feet of U500, U505
6 feet be connected with 148 feet of U500；
1 foot of U512 is connected with 163 feet of U500, and 3 feet of U505 are connected with 175 feet of U500,4 feet of U505 with
2 feet of 74V1G08 chips U513 are connected, and 5 feet of U505 are connected with 149 feet of U500,6 feet of U505 and the 148 foot phases of U500
Even；
1,24 feet of U506 are connected with 148 feet of U500, and 25,48 feet of U506 are connected with 4 feet of U513；
21 feet of U505 are connected with 1 foot of TL084 chips U514,3 feet of U514 respectively with the one end capacitance C122, resistance
The one end R136 be connected, the capacitance C122 other ends ground connection, the resistance R136 other ends respectively with the one end resistance R135, the one end capacitance C119
It is connected, the capacitance C119 other ends are connected with 1,2 feet of U514 respectively；6 feet of the resistance R135 other ends and INA148 chips U117
It is connected, 3 feet of U117 are connected by resistance R193 with load anode, and 2 feet of U117 are connected by resistance R194 with load cathode
(this part is external sampling port, for doing closed-loop control, acquires in closed loop and needs the amount controlled, including voltage, current digital
Signal).
42 feet of the U500 are connected by resistance R28 with amplifier U13 output ends, amplifier U13 input terminals and internal sample
Port is detected to be connected.
The utility model further includes that 3 feet of ADuM5400/SOIC_W chips U3, U3 are connected with 72 feet of U500,4 feet of U3
It is connected with 68 feet of U500,5 feet of U3 are connected with 73 feet of U500,14 feet of U3 and the 5 foot phases of TLV5614IDR chips U10
Even, 13 feet of U3 are connected with 4 feet of U10, and 12 feet of U3 are connected with 7 feet of U10,11 feet and the NPN triode Q1 base stage phase of U3
Even, triode Q1 emitters ground connection, triode Q1 collectors are connected by light emitting diode D9 with power supply V5DAC；
14 feet of U10 are connected with 3 feet of OPA4350 chips U525, and 1 foot of U525 is connected by resistance R53 with BNC connector
(part is DAC, i.e. digital analog converter, for converting digital signals into analog signal).
The utility model further includes power unit, and power unit includes TPS767D301 chip U2, CC6-1205SF-E cores
28 feet of piece U144 and CC6-1212DF-E chip U145, U2 by resistance R6 respectively with the one end resistance R7, the 80 foot phases of U500
Even, the resistance R7 other ends are connected with 22 feet of U2；
1 foot of U144 is connected with V24P power ends, and 2,3 feet of U144 are connected with V24N power ends, 7 feet of U144 respectively with
The ends V5DP_C, the one end capacitance C184, the one end capacitance C123 be connected, the capacitance C184 other ends respectively with the one end R232, U144 5
Foot, the ends DGND_C are connected, and the capacitance C123 other ends are connected with the ends DGND_C；
1 foot of U145 is connected with V24P power ends, and 2,3 feet of U145 are connected with V24N power ends, 7 feet of U145 respectively with
The ends V15DP_C, the one end capacitance C185, the one end capacitance C127 be connected, the capacitance C185 other ends respectively with the one end capacitance C186, U145
5 feet, the one end capacitance C129, the ends AGND_C be connected, the capacitance C186 other ends respectively with the ends V15DN_C, resistance R234, U145
4 feet, the capacitance C129 other ends are connected.
80 feet of the U500 are connected by resistance R12 with the ends EASYDSP_RESET；105 feet of U500 pass through resistance R23
It is connected with 3 feet of OSC chips, 4 feet of OSC chips are connected with the one end capacitance C36, the one end capacitance C39, the one end inductance L10 respectively,
Another ends termination V3.3DP inductance L10, the capacitance C36 other ends are connected with the capacitance C39 other ends, the ends DGND respectively.
The utility model further includes that 3 feet of TL084 chips U522, U522 pass through resistance R165 and BAV99/SOT chips D1
Cathode terminal be connected, 2 feet of U522 are connected by resistance R166 with the anode tap of D1, the common end of D1 and the 21 end phases of U505
Even；
2 feet of U522 are connected by resistance R169 with the cathode terminal of BAV99/SOT chips D2, the anode tap of D2 and U522's
1 foot is connected, and the common end of D2 is connected by resistance R185 with 2 feet of LM293 chips U521,3 feet of U521 respectively with resistance
The one end R223, the one end capacitance C180, the one end resistance R221, the adjustable sides rheostat R222 are connected, mono- fixing ends of rheostat R222 point
It is not connected with the ends AGND, the resistance R223 other ends, the capacitance C180 other ends, the resistance R221 other ends are connected with the ends REF10V,
1 foot of U521 is connected with 21 feet of U500；
The ends REF10V are connected with 1 foot of LM2904 chips U520, and 2 feet of U520 are connected with 1 foot of U520,3 feet of U520
It is connected with 6 feet of REF102 chips U141,2 feet of U141 are connected with the ends V15DP.
The utility model further includes that 1 foot of TLE6250GV33 chips U17, U17 are connected with 176 feet of U500,4 feet of U17
Be connected with 1 foot of U500 by resistance R47,7 feet of U17 are connected with 2 feet of ACT45B-510-2P chips U12,3 feet of U12 with
The ends CANH are connected；6 feet of U17 are connected with 1 foot of U12, and 4 feet of U12 are connected with the ends CANL, and the ends CANL pass through resistance with the ends CANH
R50 is connected.
Compared with existing structure, the carried topological structure of the invention is accomplished that the single stage power of bipolar voltage AC to AC becomes
It changes, conversion efficiency is high；Compared with traditional dynamic electric voltage recovery device (Dynamic Voltage Restorer DVR), this practicality
Novel when can the accomplish long, fluctuation of the adjusting voltage of depth, the high-low voltage that load side is solved from distribution feeder end are asked
Topic；In addition, the utility model institute promoting or transferring laminated structure does not use the capacitance of large capacity, reduce device volume and operation and maintenance at
This, the existing grid structure of power distribution network can't be changed by carrying invention series connection access power distribution network.
The experimental prototype parameter built is as follows：
Since laboratory condition is limited, it is specified that network voltage peak value 155.5V as shown above, virtual voltage pass through from
Coupling transformer is adjusted accordingly according to the operating mode of institute's promoting or transferring depressor to be verified.
It is understood that above with respect to the specific descriptions of the utility model, it is merely to illustrate the utility model and is not
It is limited to technical solution described in the utility model embodiment, it will be understood by those of ordinary skill in the art that, it still can be with
It modifies to the utility model or equivalent replacement, to reach identical technique effect；Needs are used as long as meeting, all in this reality
Within novel protection domain.
Claims (5)
1. a kind of double down pressure booster type AC-AC converter modules, including the first double down pressure/booster type AC-AC converter modules with
Second double down pressure/booster type AC-AC converter modules, it is characterised in that the first double down pressure/booster type AC-AC converter module packets
Include filter inductance Lf1, capacitance C1, switching tube S1, diode D1, diode D2, coupled inductor CL1, switching tube S2, switching tube
S3, diode D3, capacitance C2, coupled inductor CL2, diode D4, switching tube S4；
The second double down pressure/booster type AC-AC converter modules include filter inductance Lf2, capacitance C3, switching tube S5, diode
D5, diode D6, coupled inductor CL3, switching tube S6, switching tube S7, diode D7, capacitance C4, coupled inductor CL4, two
Pole pipe D8, switching tube S8；
Inductance Lf1One end is connected with power frequency double the first secondary sides of transformer with split winding one end, inductance Lf1The other end respectively with capacitance C1One
End, switching tube S1Collector, diode D1Cathode is connected, switching tube S1Emitter respectively with diode D2Cathode, coupling inductance line
Enclose CL1First inductance one end is connected, coupled inductor CL1The first inductance other end respectively with coupled inductor CL1Second electricity
Feel one end, inductance L is connected, coupled inductor CL1The second inductance other end respectively with switching tube S2Collector, diode D1Sun
Extremely it is connected；
Switching tube S2Emitter respectively with switching tube S3Emitter, diode D2Anode, diode D3Anode, capacitance C1The other end,
Capacitance C2One end is connected, switching tube S3Collector respectively with coupled inductor CL2First inductance one end, diode D4Anode phase
Even, coupled inductor CL2The first inductance other end respectively with coupled inductor CL2Second inductance one end, coupled inductor
CL3First inductance one end, coupled inductor CL3Second inductance one end is connected, coupled inductor CL2The second inductance other end
Respectively with diode D3Cathode, switching tube S4Emitter is connected, switching tube S4Collector respectively with capacitance C2The other end, diode D4
Double the first secondary side of the transformer with split winding other ends of cathode, power frequency are connected；
Inductance Lf2One end is connected with power frequency double the second secondary sides of transformer with split winding one end, inductance Lf2The other end respectively with capacitance C3One
End, switching tube S5Collector, diode D5Cathode is connected, switching tube S5Emitter respectively with diode D6Cathode, coupling inductance line
Enclose CL3The first inductance other end is connected, coupled inductor CL3The second inductance other end respectively with switching tube S6Collector, two poles
Pipe D5Anode is connected；
Switching tube S6Emitter respectively with switching tube S7Emitter, diode D6Anode, diode D7Anode, capacitance C3The other end,
Capacitance C4One end is connected, switching tube S7Collector respectively with coupled inductor CL4First inductance one end, diode D8Anode phase
Even, coupled inductor CL4The first inductance other end respectively with coupled inductor CL4Second inductance one end, capacitance C are connected, coupling
Close inductance coil CL4The second inductance other end respectively with diode D7Cathode, switching tube S8Emitter is connected, switching tube S8Current collection
Pole respectively with capacitance C4The other end, diode D8Double the second secondary side of the transformer with split winding other ends of cathode, power frequency are connected.
2. a kind of double down pressure booster type AC-AC converter modules according to claim 1, it is characterised in that the switching tube S1、
Switching tube S2, switching tube S3, switching tube S4, switching tube S5, switching tube S6, switching tube S7, switching tube S8It is opened using full-control type power
Guan Guan.
3. a kind of double down pressure booster type AC-AC converter modules according to claim 1, it is characterised in that the switching tube S1、
Switching tube S2, switching tube S3, switching tube S4, switching tube S5, switching tube S6, switching tube S7, switching tube S8Carry two pole of inverse parallel
Pipe.
4. a kind of double down pressure booster type AC-AC converter modules according to claim 2, it is characterised in that the full-control type work(
Rate switching tube uses insulated gate bipolar transistor IGBT.
5. a kind of double down pressure booster type AC-AC converter modules according to claim 4, it is characterised in that the IGBT drivings
Device uses 2SC0435T drivers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721828366.3U CN207743877U (en) | 2017-12-25 | 2017-12-25 | A kind of double down pressure booster type AC-AC converter modules |
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|---|---|---|---|
| CN201721828366.3U CN207743877U (en) | 2017-12-25 | 2017-12-25 | A kind of double down pressure booster type AC-AC converter modules |
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| CN207743877U true CN207743877U (en) | 2018-08-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947595A (en) * | 2017-12-25 | 2018-04-20 | 国网辽宁省电力有限公司沈阳供电公司 | A kind of double down pressure booster type AC AC converter modules |
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2017
- 2017-12-25 CN CN201721828366.3U patent/CN207743877U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947595A (en) * | 2017-12-25 | 2018-04-20 | 国网辽宁省电力有限公司沈阳供电公司 | A kind of double down pressure booster type AC AC converter modules |
| CN107947595B (en) * | 2017-12-25 | 2020-10-27 | 国网辽宁省电力有限公司沈阳供电公司 | Double-voltage reduction and boost type AC-AC converter module |
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| CB03 | Change of inventor or designer information |
Inventor after: Huang Xu Inventor after: Cai Guowei Inventor after: Feng Xiqiang Inventor after: Li Jian Inventor after: Li Yueyue Inventor after: Wang Wei Inventor after: Guo Dongbo Inventor after: Wang Yang Inventor before: Huang Xu Inventor before: Cai Jiwei Inventor before: Feng Xiqiang Inventor before: Li Jian Inventor before: Li Yueyue Inventor before: Wang Wei Inventor before: Guo Dongbo Inventor before: Wang Yang |