CN107612296A - A kind of multi-mode electric power system based on three-phase bridge - Google Patents
A kind of multi-mode electric power system based on three-phase bridge Download PDFInfo
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- CN107612296A CN107612296A CN201710884202.0A CN201710884202A CN107612296A CN 107612296 A CN107612296 A CN 107612296A CN 201710884202 A CN201710884202 A CN 201710884202A CN 107612296 A CN107612296 A CN 107612296A
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Abstract
The invention discloses a kind of multi-mode electric power system based on three-phase bridge, including three phase bridge circuit, three groups of LC filter circuits in parallel, switching control module, detection modulate circuit, DSP control circuits, drive circuit and auxiliary power circuit；DSP control circuits connect the input of three phase bridge circuit, the input connection dc source of three phase bridge circuit by drive circuit, and the output end of three phase bridge circuit is exported by three groups of LC filter circuits and switching control module；Detection modulate circuit is used for voltage, the current information for gathering voltage, current information and the first lead-out terminal of the input of three phase bridge circuit, the second lead-out terminal, the 3rd lead-out terminal and the 4th lead-out terminal；Detect the collection input of the information output connection DSP control circuits of modulate circuit；The control terminal connection switching control module of DSP control circuits；The multifunctional power of alternating current-direct current output is realized by relay switching, small volume is cost-effective, economical and practical.
Description
Technical field
The present invention relates to power system, distributed power generation, energy internet router, electric automobile, frequency control, track
The technical field of supplied by AC/DC electricity, more particularly to one are needed in the national economy such as traffic and flexible transmission technology and industrial and agricultural production
Multi-mode electric power system of the kind based on three-phase bridge.
Background technology
With the development of grid power electronization, single power supply tends not to meet to require in actual applications, therefore needs
Will be through being powered respectively frequently with multiple power sources.It is so both uneconomical or inconvenient.
At present, three-phase bridge circuit dependable performance uses extensive, but is normally only used for three-phase inversion or three-phase PWM rectification system
System, there is provided electrical energy form it is single.Tend not to meet to require for single power supply in practice, it is therefore desirable to through frequently with a variety of
The situation that power supply is powered respectively.A kind of multi-mode electric power system based on three-phase bridge is proposed, is realized by relay switching
The multifunctional power of alternating current-direct current output, small volume is cost-effective, economical and practical.
The content of the invention
It is an object of the invention to provide a kind of multi-mode electric power system based on three-phase bridge, realized by relay switching
The multifunctional power of alternating current-direct current output, small volume is cost-effective, economical and practical.
The technical solution adopted by the present invention is：
A kind of multi-mode electric power system based on three-phase bridge, including three phase bridge circuit, three groups of LC filter circuits in parallel, switching controls
Molding block, detection modulate circuit, DSP control circuits, drive circuit and auxiliary power circuit；Described DSP control circuits pass through
Drive circuit connect three phase bridge circuit input, three phase bridge circuit input connection dc source, three phase bridge circuit it is defeated
Go out end to export by three groups of LC filter circuits and switching control module；Described detection modulate circuit is used to gather three phase bridge circuit
Voltage, current information and the first lead-out terminal of input, the second lead-out terminal, the 3rd lead-out terminal and the 4th lead-out terminal
Voltage, current information；Detect the collection input of the information output connection DSP control circuits of modulate circuit；DSP control electricity
The control terminal connection switching control module on road；Auxiliary power circuit is that DSP control circuits, detection modulate circuit and drive circuit supply
Electricity；
First phase output terminal of described three phase bridge circuit connects the first end of the first inductance in first group of filter circuit, the first electricity
The second end connection first lead-out terminal of sense, the second end of the first inductance also by the first capacitance connection to the 4th lead-out terminal,；
Second phase output terminal of three phase bridge circuit connects the first end of the second inductance in second group of filter circuit, the second end of the second inductance
The second lead-out terminal is connected, the second end of the second inductance also passes through the second capacitance connection to the 4th lead-out terminal；Three phase bridge circuit
Third phase output end connect the first end of the 3rd inductance in the 3rd group of filter circuit, the second end connection of the 3rd inductance is the 3rd defeated
Go out terminal, the second end of the 3rd inductance also passes through the 3rd capacitance connection to the 4th lead-out terminal；4th lead-out terminal passes sequentially through
Second end of the 3rd electric capacity, the second end of the second electric capacity, the second end of the first electric capacity are connected to the first end of the second inductance；
Described switching control module is broken including the first killer switch, the second killer switch, the 3rd killer switch, the 4th
Road device switch and the 5th killer switch；First killer switch located at the second inductance the second end and the second lead-out terminal it
Between；Second killer switch is between the second end of the 3rd inductance and the 3rd lead-out terminal；One end of 3rd killer switch
The first end of the second inductance is connected, the other end connects the second end of the first electric capacity；4th killer switch is located at the second electric capacity
Between second end and the second end of the 3rd electric capacity；One end of 5th killer switch is connected to the negative pole of dc source, the other end
Second end of the 3rd electric capacity being connected to.
Described detection modulate circuit includes detection circuit and modulate circuit, and detection circuit uses voltage x current hall sensing
Device, modulate circuit use second order Butterworth low pass wave circuit.
The present invention utilizes the mode of operation of DSP control circuit control systems, is mainly based upon three phase bridge circuit and LC filtering
Circuit, it is alternating current and direct current or the power supply of the straight mixed mode of friendship by the DC voltage inversion of dc source conveying；Wherein,
Using traditional three-phase bridge and a DSP control chip, by connecting different peripheral circuits, handed over using relay switching to realize
Direct current output；Wherein AC mode can support list/three-phase alternating current to export and can realize harmonic source simulation, output frequency and output electricity
Press adjustable, while can also realize that current stabilization exports, and possess overcurrent（Including peak value and virtual value）, overvoltage and overload protection etc.
Function.DC mode can support direct current output and can realize Buck decompressions, constant current output, while also possess overcurrent, overvoltage
With the function such as overload protection.Two bridge arms composition H bridges in the main three-phase bridge of AC/DC mixing output modes externally provide blow-up
Stream, another bridge arm realize Buck buck functionalities, are provided out direct current.There is body compared with common multiple-unit electric power system
Product it is small, it is cost-effective the characteristics of.
Brief description of the drawings
Fig. 1 is the schematic block circuit diagram of the present invention；
Fig. 2 is the AC modular system composition frame charts of the present invention；
Fig. 3 is the triangular wave control structure schematic diagram of the present invention；
Fig. 4 is the DC modular system composition frame charts of the present invention；
Fig. 5 is the DC pattern principle explanatory diagrams of the present invention；
Fig. 6 is the DC/AC mixed mode block diagrams of system of the present invention；
Fig. 7 is single phase ac control principle drawing under DC/AC mixed modes of the invention.
Embodiment
As shown in figure 1, the present invention includes three phase bridge circuit, three groups of LC filter circuits in parallel, switching control module, detection
Modulate circuit, DSP control circuits, drive circuit and auxiliary power circuit；Described DSP control circuits are connected by drive circuit
The input of three phase bridge circuit, the input connection dc source BT of three phase bridge circuit, the output end of three phase bridge circuit pass through three
Group LC filter circuits and the output of switching control module；Described detection modulate circuit is used for the input for gathering three phase bridge circuit
Voltage, current information and first lead-out terminal A, the second lead-out terminal B, the 3rd lead-out terminal C and the 4th lead-out terminal D electricity
Pressure, current information；Detect the collection input of the information output connection DSP control circuits of modulate circuit；DSP control circuits
Control terminal connects switching control module；Auxiliary power circuit is DSP control circuits, detection modulate circuit and drive circuitry.
First phase output terminal of described three phase bridge circuit connects the first end of the first inductance L1 in first group of filter circuit,
First inductance L1 the second end connection first lead-out terminal A, the first inductance L1 the second end are also connected to by the first electric capacity C1
4th lead-out terminal D；Second phase output terminal of three phase bridge circuit connects the first end of the second inductance L2 in second group of filter circuit,
The second end that second inductance L2 the second end connects the second lead-out terminal B, the second inductance L2 is also connected to by the second electric capacity C2
4th lead-out terminal D；The third phase output end of three phase bridge circuit connects the first end of the 3rd inductance L3 in the 3rd group of filter circuit,
3rd inductance L3 the second end connects the 3rd lead-out terminal C, and the 3rd inductance L3 the second end is also connected to by the 3rd electric capacity C3
4th lead-out terminal D；4th lead-out terminal D passes sequentially through the 3rd electric capacity C3 the second end, the second electric capacity C2 the second end, first
Electric capacity C1 the second end is connected to the second inductance L2 first end.
Described switching control module includes the first killer switch K1, the second killer switch K2, the 3rd breaker and opened
Close K3, the 4th killer switch K4 and the 5th killer switch K5；First killer switch K1 is located at the second of the second inductance L2
Between end and the second lead-out terminal B；Second killer switch K2 located at the 3rd inductance L3 the second end and the 3rd lead-out terminal C it
Between；3rd killer switch K3 one end connects the second inductance L2 first end, and the other end connects the first electric capacity C1 the second end；
4th killer switch K4 is between the second electric capacity C2 the second end and the 3rd electric capacity C3 the second end；5th killer switch
K5 one end is connected to dc source BT negative pole, the second end for the 3rd electric capacity C3 that the other end is connected to.
Illustrate the operation principle of the present invention below in conjunction with the accompanying drawings：
The present invention uses traditional three-phase bridge and a DSP control chip, is exported by relay switching to realize alternating current-direct current
Multifunctional power.The power supply is based on digital signal processor（DSP）Control, AC, DC can be realized by connecting different peripheral circuits
With AC DC mix three kinds of output modes.Wherein AC mode list/three-phase alternating current can be supported to export and can realize harmonic source simulation,
Output frequency and output voltage are adjustable, while can also realize that current stabilization exports, and possess overcurrent（Including peak value and virtual value）, mistake
The function such as voltage and overload protection.List/three-phase alternating current voltage stabilizing output completes control using SVPWM and three closed loop regulation technologies, defeated
The frequency and size for going out voltage are given by man-machine interaction mode；Harmonic source simulation realizes that harmonic source is electric using triangular wave comparison method
The frequency and size of stream are equally given by man-machine interaction mode, and system is configured to instruction current according to given frequency and size,
Tracking of the output current to instruction current is realized using triangular wave comparison method, realizes the purpose of output harmonic wave.DC mode can prop up
Hold direct current output:Voltage stabilizing or constant current output are realized by voltage and current double closed-loop PI regulations, output mode switches by man-machine interaction
Mode gives；Also possess the functions such as overcurrent, overvoltage and overload protection simultaneously.The main three-phase bridge of AC/DC mixing output modes
In two bridge arms composition H bridges single phase ac is externally provided, another bridge arm realizes Buck buck functionalities, is provided out direct current
Electricity.There is the characteristics of small volume, cost-effective compared with common multiple-unit electric power system.
DSP uses TI DSP28335；Detection circuit uses voltage x current Hall sensor, and modulate circuit uses second order bar
Special Butterworth low-pass filter circuit.Signal condition is 0-3V, and increase according to A/D module feature inside DSP2000 by modulate circuit
Amplitude limit function ensures signal inside DSP within the receptible range of signal of A/D module, the excessive damage caused to DSP of anti-stop signal
It is bad；Power supply auxiliary circuit is powered for whole system.
Mode of operation is first determined whether after system electrification, switching circuit is controlled according to different mode of operations, is completed corresponding
It is required that.
As shown in Fig. 2 when system is arranged to three-phase AC patterns, switching control module is controlled by DSP control circuits
Action so that the first killer switch K1, the second killer switch K2 and the 4th killer switch K4 closures, the 3rd breaker
K3 and the 5th killer switch K5 is switched to disconnect.Three-phase inverting circuit is in system according to system requirements using SPWM modulation
Fixed frequency or frequency conversion voltage stabilizing three-phase output, the frequency and magnitude of voltage of output are given by man-machine interaction.Under harmonic wave pattern, equally
The harmonic current of output is given by man-machine interaction, and system realizes harmonic wave using current tracking method.Given electric current as shown in Figure 3
Made the difference for instruction current and actual current, then carry out PI regulations, PWM ripples are produced compared with triangular wave, control three-phase bridge
Realize that three phase harmonic exports.
As shown in Figure 4：When system is arranged to DC patterns, switching control module is controlled to act by DSP control circuits,
So that the first killer switch K1, the second killer switch K2, the 4th killer switch K4 and the 5th killer switch K5 closures,
3rd killer switch K3 disconnects.Now, three bridge arms are three independent Buck translation circuits.As shown in figure 5, ought be each single
When bridge arm circuit is as step-down conversion circuit, if applying pwm signal in VT1 drive ends, VT2 applies by signal, direct half-bridge
Translation circuit realizes buck chopper (Buck) translation circuit function, i.e. decompression transformation.Loss now mostlys come from afterflow two
Pole pipe VD2, when fly-wheel diode works, if VT2 is turned on, i.e. VD2 short circuits, profit can eliminate VD2's in this way
Loss.Similarly, using VT1 conducting, i.e. VD1 short circuits, VD1 loss can also be eliminated.The Buck translation circuit independent to three
It is controlled achievable DC mode output.DC mode can support three road DC voltage-stabilizings, constant current output, while also possess electricity
The functions such as stream, overvoltage and overload protection.
As shown in fig. 6, when system is arranged to AC/DC mixing output modes, switching control is controlled by DSP control circuits
Module action processed so that the first killer switch K1 and the 3rd killer switch K3 closures, composition H bridges realize that single phase ac is defeated
Go out.As shown in fig. 7, VT1 and VT2 add the signal of phase complements, while VT3 and VT4 add the signal of phase complements.Wherein VT1 and
VT4 is identical signal, and VT2 and VT3 are identical signal.The voltage for so loading both ends is positive and negative alternate alternating voltage.
Using SPWM modulation make system be in fixed frequency or frequency conversion voltage stabilizing single-phase output, the frequency exported and magnitude of voltage by man-machine interaction to
It is fixed.Under harmonic wave pattern, the harmonic current equally exported is given by man-machine interaction, and system is realized humorous using current tracking method
Ripple exports.Given electric current is that instruction current and actual current make the difference, and then carries out PI regulations, is produced compared with triangular wave
PWM ripples, control H bridges realize single-phase harmonic wave.The second killer switch K2 and the 5th killer switch K5 is closed, disconnects the 4th
Killer switch K4, the bridge arm of system the 3rd composition Buck translation circuits realize direct current output.Its principle and Fig. 5 DC mode phases
Together.DC mode can support DC voltage-stabilizing, constant current output all the way, while also possess the work(such as overcurrent, overvoltage and overload protection
Energy.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to foregoing embodiments, it will be understood by those within the art that：It is still
Technical scheme described in previous embodiment can be modified, either which part or all technical characteristic are carried out etc.
With replacement；And these modifications or replacement, the essence of appropriate technical solution is departed from technical scheme of the embodiment of the present invention
Scope.
Claims (2)
- A kind of 1. multi-mode electric power system based on three-phase bridge, it is characterised in that：Including three phase bridge circuit, three groups of LC filters in parallel Wave circuit, switching control module, detection modulate circuit, DSP control circuits, drive circuit and auxiliary power circuit；Described DSP Control circuit by drive circuit connect three phase bridge circuit input, three phase bridge circuit input connection dc source, three The output end of phase bridge circuit is exported by three groups of LC filter circuits and switching control module；Described detection modulate circuit is used to adopt Collect voltage, current information and the first lead-out terminal of input of three phase bridge circuit, the second lead-out terminal, the 3rd lead-out terminal and Voltage, the current information of 4th lead-out terminal；Detect the collection input of the information output connection DSP control circuits of modulate circuit End；The control terminal connection switching control module of DSP control circuits；Auxiliary power circuit is DSP control circuits, detection modulate circuit And drive circuitry；First phase output terminal of described three phase bridge circuit connects the first end of the first inductance in first group of filter circuit, the first electricity The second end connection first lead-out terminal of sense, the second end of the first inductance also by the first capacitance connection to the 4th lead-out terminal,； Second phase output terminal of three phase bridge circuit connects the first end of the second inductance in second group of filter circuit, the second end of the second inductance The second lead-out terminal is connected, the second end of the second inductance also passes through the second capacitance connection to the 4th lead-out terminal；Three phase bridge circuit Third phase output end connect the first end of the 3rd inductance in the 3rd group of filter circuit, the second end connection of the 3rd inductance is the 3rd defeated Go out terminal, the second end of the 3rd inductance also passes through the 3rd capacitance connection to the 4th lead-out terminal；4th lead-out terminal passes sequentially through Second end of the 3rd electric capacity, the second end of the second electric capacity, the second end of the first electric capacity are connected to the first end of the second inductance；Described switching control module is broken including the first killer switch, the second killer switch, the 3rd killer switch, the 4th Road device switch and the 5th killer switch；First killer switch located at the second inductance the second end and the second lead-out terminal it Between；Second killer switch is between the second end of the 3rd inductance and the 3rd lead-out terminal；One end of 3rd killer switch The first end of the second inductance is connected, the other end connects the second end of the first electric capacity；4th killer switch is located at the second electric capacity Between second end and the second end of the 3rd electric capacity；One end of 5th killer switch is connected to the negative pole of dc source, the other end Second end of the 3rd electric capacity being connected to.
- 2. the multi-mode electric power system according to claim 1 based on three-phase bridge, it is characterised in that：Described detection conditioning Circuit includes detection circuit and modulate circuit, and detection circuit uses voltage x current Hall sensor, and modulate circuit uses second order bar Special Butterworth low-pass filter circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710884202.0A CN107612296B (en) | 2017-09-26 | 2017-09-26 | A kind of multi-mode power supply system based on three-phase bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710884202.0A CN107612296B (en) | 2017-09-26 | 2017-09-26 | A kind of multi-mode power supply system based on three-phase bridge |
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| CN107612296B CN107612296B (en) | 2019-02-26 |
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| CN201710884202.0A Expired - Fee Related CN107612296B (en) | 2017-09-26 | 2017-09-26 | A kind of multi-mode power supply system based on three-phase bridge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109194179A (en) * | 2018-10-24 | 2019-01-11 | 浙江科技学院 | Great power bidirectional AC/DC integrated power supply device |
| CN109510490A (en) * | 2018-12-29 | 2019-03-22 | 河南锂想动力科技有限公司 | A kind of Multi-function ac/dc power-supply system |
| CN113841326A (en) * | 2019-06-24 | 2021-12-24 | 德州仪器公司 | Switching converter with multiple driver stages and related modes |
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| CN106208641A (en) * | 2016-09-18 | 2016-12-07 | 北京机械设备研究所 | A kind of circuit of alternating current-direct current multiplexing |
| CN106786739A (en) * | 2016-12-23 | 2017-05-31 | 北京天诚同创电气有限公司 | Inverter, inverter, inversion system and operation/cutting method |
| CN106849724A (en) * | 2017-04-17 | 2017-06-13 | 中车青岛四方车辆研究所有限公司 | Auxiliary inverse power supply |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202455130U (en) * | 2011-12-31 | 2012-09-26 | 比亚迪股份有限公司 | Charging/discharging control system of electric vehicle and electric vehicle |
| CN202888833U (en) * | 2012-06-13 | 2013-04-17 | 湖北工业大学 | Power quality control system merged with active electric power filter and reactive compensation device |
| CN106208641A (en) * | 2016-09-18 | 2016-12-07 | 北京机械设备研究所 | A kind of circuit of alternating current-direct current multiplexing |
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| CN109510490A (en) * | 2018-12-29 | 2019-03-22 | 河南锂想动力科技有限公司 | A kind of Multi-function ac/dc power-supply system |
| CN113841326A (en) * | 2019-06-24 | 2021-12-24 | 德州仪器公司 | Switching converter with multiple driver stages and related modes |
| CN113841326B (en) * | 2019-06-24 | 2024-02-13 | 德州仪器公司 | Switching converter with multiple drive stages and related modes |
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| CN107612296B (en) | 2019-02-26 |
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