CN106921287B - A kind of soft starting circuit applied in low-power Single-Phase Inverter Source - Google Patents
A kind of soft starting circuit applied in low-power Single-Phase Inverter Source Download PDFInfo
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- CN106921287B CN106921287B CN201510985000.6A CN201510985000A CN106921287B CN 106921287 B CN106921287 B CN 106921287B CN 201510985000 A CN201510985000 A CN 201510985000A CN 106921287 B CN106921287 B CN 106921287B
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- power module
- phase bridge
- power
- soft start
- bridge arm
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/36—Means for starting or stopping converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of new soft starting circuits being applied in low-power Single-Phase Inverter Source, it includes rectification circuit, six pipe three-phase bridge power modules, soft start resistance and busbar capacitor, the rectification circuit output positive and negative terminal is directly connected to the positive and negative terminal of six pipe three-phase bridge power modules, four switching tube composition single-phase inversion topologys of two-phase bridge arm in module, any one in module in remaining two switching tubes of phase bridge arm is as soft start resistance by-pass switch, after power supply electrifying stage soft start resistance completes soft start full of busbar capacitor, bypass to soft start resistance is realized by switching tube remaining in power module, complete soft start-up process, this new soft starting circuit, a high power relay can be saved compared to conventional soft starting circuit.
Description
Technical field
The present invention relates to the soft starting circuits in low-power Single-Phase Inverter Source.
Background technique
The main circuit topology of Single-Phase Inverter Source is that rectification circuit adds inverter circuit, and inverter circuit is mostly voltage-type inversion,
It is parallel with the busbar capacitor of larger capacitance in rectification circuit output end namely inverter circuit input terminal, plays the work of energy storage pressure stabilizing
With.
Inverter circuit is four pipe H bridge topological structures, in low-power type, to improve whole aircraft reliability, usually in selection
Portion's integration packaging has the power module of multiple semiconductor switch pipes to constitute main circuit.This power module includes insulated gate bipolar
Transistor npn npn module (IGBT), intelligent power module (IPM) etc..
Commercial power module corresponding to lower wattage power supply is typically designed to the form of six pipe three-phase bridges, four pipe H bridge forms
It is very rare.Therefore common design method is to select six pipe three-phase bridge power modules, is constituted using four pipes H bridge therein
Two pipes of the main topology of the inversion of Single-Phase Inverter Source, remaining phase bridge arm are on the shelf.
Due to there is a presence of the busbar capacitor of larger capacitance, capacitance connection rectification circuit output end, when powering on, due to
Charging current is excessive, it will damages to busbar capacitor, therefore, soft starting circuit use must be designed in Single-Phase Inverter Source
The slow charging of busbar capacitor is avoided with reducing power grid dash current to rectified current and busbar in power up phase realization
The damage of capacitor.
In order to solve the above-mentioned technical problem, in the prior art, soft start circuit structure as shown in Figure 1 is usually used,
The soft starting circuit that the prior art is applied in low-power Single-Phase Inverter Source is as shown in Figure 1.It is described to answer in Fig. 1
It include rectification circuit 2, six pipe three-phase bridge power modules 1, soft start for the soft starting circuit in low-power Single-Phase Inverter Source
Resistance 3 and busbar capacitor 4.The positive and negative terminal of the busbar capacitor and the anode 113 and negative terminal 114 for being connected to power module 1, it is described whole
A soft start resistance 3 and relay 5 are sealed between the output plus terminal 21 of current circuit 2 and the anode 113 of power module 1
Parallel combination.The midpoint end 117 of the third phase bridge arm of the power module 1 is vacant, in remaining first phase and the second phase bridge arm
Output end of the point end 115 and 116 as inverter.In power up phase, it is in an off state the contact of relay 5, rectified
Circuit 2 charges to busbar capacitor 4 by soft start resistance 3, since there are a soft start resistance current limlitings on charge circuit, can incite somebody to action
The charging current of busbar capacitor 4 is limited in an acceptable range.As charging progresses, charging current gradually reduces,
Until busbar capacitor 4 is full of, it is closed at this time by control relay 5, soft start resistance 3 is bypassed, and hereafter inverter circuit is normal
Work, the path of the current pass drawn from rectification circuit 2 becomes relay contact.Relay contact is Low ESR low-loss road
Diameter, power supply energy can be transmitted normally.
In the soft starting circuit of above-mentioned Single-Phase Inverter Source circuit, the contact capacity of relay needs to export with rectification circuit
Current value matches, and therefore, it is necessary to use a large volume of high power relay.Increase circuit element quantity, complete machine
Weight, volume and cost.
Summary of the invention
The object of the present invention is to provide a kind of soft starting circuit applied in low-power Single-Phase Inverter Source, structure letters
It is single, a high power relay can be saved, to reduce circuit elements number of packages, main screw lift, volume and cost.
A kind of soft starting circuit applied in low-power Single-Phase Inverter Source of the invention can pass through following two skills
Art scheme is realized.
Scheme one:
A kind of soft starting circuit applied in low-power Single-Phase Inverter Source of the invention, including rectification circuit, power
Module, soft start resistance and busbar capacitor, it is characterised in that: the power module is six pipe three-phase bridge power modules, described whole
The output plus terminal of current circuit is directly connected to the anode of power module, and the output negative terminal of the rectification circuit is directly connected to power
The negative terminal of module；One end of the soft start resistance is connected to the anode of the power module, and the other end is connected to power module
Third phase bridge arm midpoint end；The anode of the busbar capacitor is connected to the midpoint end of the third phase bridge arm of power module, female
The negative terminal of row's capacitor is connected to the negative terminal of power module, i.e., by the side switch pipe of third phase bridge arm in power module and its it is anti-simultaneously
The parallel combination of diode realizes the bypass to soft start resistance；The midpoint of first phase of the power module and the second phase bridge arm
Hold the output end as inverter.
Scheme two:
A kind of soft starting circuit applied in low-power Single-Phase Inverter Source, including rectification circuit, power module, soft open
Dynamic resistance and busbar capacitor, it is characterised in that: the power module is six pipe three-phase bridge power modules, the rectification circuit it is defeated
Anode is directly connected to the anode of power module out, and the output negative terminal of the rectification circuit is directly connected to the negative of power module
End；One end of the soft start resistance is connected to the midpoint end of power module third phase bridge arm, and the other end is connected to power module
Negative terminal, the anode of busbar capacitor is connected to the anode of power module, and the negative terminal of busbar capacitor is connected to the third of power module
The midpoint end of phase bridge arm, i.e., it is real by the side switch pipe of third phase bridge arm in power module and its anti-and diode parallel combination
Now to the bypass of soft start resistance；The midpoint end of first phase of the power module and the second phase bridge arm is as the defeated of inverter
Outlet.
Using a kind of soft starting circuit applied in low-power Single-Phase Inverter Source of technical solution of the present invention, have with
Lower advantage:
1. save a powerful relay in soft starting circuit of the invention, make the circuit structure of power supply it is simple,
Number of elements is few, and the hardware cost of inverter is effectively reduced；
2. saving a powerful relay in soft starting circuit of the invention, it is substantially reduced the volume of inverter
And weight.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the soft starting circuit being applied in low-power Single-Phase Inverter Source in the prior art；
Fig. 2 is the embodiment for the soft starting circuit technical solution one that the present invention is applied in low-power Single-Phase Inverter Source
Structural schematic diagram；The embodiment is side switch pipe and its realization pair of anti-and diode of the third phase bridge arm based on power module
The embodiment of soft start resistance bypass.
Fig. 3 is the embodiment for the soft starting circuit technical solution two that the present invention is applied in low-power Single-Phase Inverter Source
Structural schematic diagram；The embodiment is that the side switch pipe of the third phase bridge arm based on power module and its anti-and diode are realized
To the embodiment of soft start resistance bypass.
In Fig. 1-3,1 is six pipe three-phase bridge power modules in figure, and 101 ~ 106 be switching tube in module, and 107 ~ 112 be module
In anti-and diode, 113 be power module anode, and 114 be power module negative terminal, and 115,116,117 be power module three-phase
Bridge arm midpoint end, 2 be rectification circuit, and 21 be rectification circuit output plus terminal, and 22 export negative terminal for rectification circuit, and 3 be soft start electricity
Resistance, 4 be busbar capacitor, and 5 be relay.
The soft starting circuit that the prior art is applied in low-power Single-Phase Inverter Source is as shown in Figure 1.It is described to answer in Fig. 1
It include rectification circuit 2, six pipe three-phase bridge power modules 1, soft start for the soft starting circuit in low-power Single-Phase Inverter Source
Resistance 3 and busbar capacitor 4.The positive and negative terminal of the busbar capacitor and the anode 113 and negative terminal 114 for being connected to power module 1, it is described whole
A soft start resistance 3 and relay 5 are sealed between the output plus terminal 21 of current circuit 2 and the anode 113 of power module 1
Parallel combination.The midpoint end 117 of the third phase bridge arm of the power module 1 is vacant, in remaining first phase and the second phase bridge arm
Output end of the point end 115 and 116 as inverter.In power up phase, it is in an off state the contact of relay 5, rectified
Circuit 2 charges to busbar capacitor 4 by soft start resistance 3, since there are a soft start resistance current limlitings on charge circuit, can incite somebody to action
The charging current of busbar capacitor 4 is limited in an acceptable range.As charging progresses, charging current gradually reduces,
Until busbar capacitor 4 is full of, it is closed at this time by control relay 5, soft start resistance 3 is bypassed, and hereafter inverter circuit is normal
Work, the path of the current pass drawn from rectification circuit 2 becomes relay contact.Relay contact is Low ESR low-loss road
Diameter, power supply energy can be transmitted normally.
Specific embodiment
Embodiment one:
It is described further below in conjunction with attached drawing 2 and specific embodiment a pair of technical solution of the present invention one.
Fig. 2 is side switch pipe and its realization pair of anti-and diode of the third phase bridge arm based on power module of the invention
The embodiment of soft start resistance bypass.The soft starting circuit being applied in low-power Single-Phase Inverter Source of the present embodiment includes whole
Current circuit 2, six pipe three-phase bridge power modules 1, soft start resistance 3 and busbar capacitor 4.The output plus terminal 21 of the rectification circuit 2
It is directly connected to the anode 113 of power module 1, the output negative terminal 22 of rectification circuit 2 is directly connected to the negative terminal of power module 1
114, one end of soft start resistance 3 is connected to the anode 113 of power module 1, and the other end is connected to the third phase bridge of power module 1
The midpoint end 117 of arm, the anode of busbar capacitor 4 are connected to the midpoint end 117 of the third phase bridge arm of power module 1, negative terminal connection
To the negative terminal 114 of power module 1, output of the other two bridge arm midpoint end 115 and 116 of power module 1 as inverter
End.Four switching tubes 101,104,102,105 of first phase bridge arm and the second phase bridge arm in the six pipes three-phase bridge power module 1
And its anti-and diode 107,110,108,111 forms single-phase inversion topology.
Below in conjunction with the embodiment of 2 pairs of the attached drawing soft starting circuits being applied in low-power Single-Phase Inverter Source of the invention
One working principle does a detailed description:
All switching tube 101-106 are in off state in power up phase, power module 1, and rectification circuit 2 passes through soft
Start-up resistor 3 charges to busbar capacitor 4, can be by busbar capacitor 4 since there are 3 current limlitings of soft start resistance on charge circuit
Charging current be limited in an acceptable range.As charging progresses, charging current gradually reduces, until busbar electricity
Hold 4 to be full of, be connected at this time by switching tube 103 in control power module 1, soft start resistance 3 is bypassed, the power module 1
Interior switching tube 103 in the conductive state and its anti-and diode 109 parallel combination constitute one can two-way through-flow road
The anode of diameter, busbar capacitor 4 is connected on the anode 113 of power module 1 by the Low ESR low-loss path, and it is steady to play energy storage
The effect of pressure, completion power on soft start-up process.Hereafter inverter circuit can start to operate normally.
Embodiment two:
Fig. 3 be the third phase bridge arm based on power module of the invention of technical solution of the present invention two side switch pipe and
Its anti-and diode realizes the embodiment bypassed to soft start resistance.
With Fig. 2 embodiment the difference is that: 4 transposition of soft start resistance 3 and busbar capacitor, i.e. soft start resistance
3 one end is connected to the midpoint end 117 of the third phase bridge arm of power module 1, and the other end is connected to the negative terminal 114 of power module 1,
The anode of busbar capacitor 4 is connected to the anode 113 of power module 1, and the other end is connected in the third phase bridge arm of power module 1
Point end 117.
A detailed description is done below in conjunction with working principle of the attached drawing 3 to the present embodiment two:
All switching tube 101-106 are in off state in power up phase, power module 1, and rectification circuit 2 passes through soft
Start-up resistor 3 charges to busbar capacitor 4, can be by busbar capacitor 4 since there are 3 current limlitings of soft start resistance on charge circuit
Charging current be limited in an acceptable range.As charging progresses, charging current gradually reduces, until busbar electricity
Hold 4 to be full of, be connected at this time by switching tube 106 in control power module 1, soft start resistance 3 is bypassed, the power module 1
Interior switching tube 106 in the conductive state and its anti-and diode 112 parallel combination constitute one can two-way through-flow road
The negative terminal of diameter, busbar capacitor 4 is connected on the negative terminal 114 of power module 1 by the Low ESR low-loss path, and it is steady to play energy storage
The effect of pressure, completion power on soft start-up process.Hereafter inverter circuit can start to operate normally.
The foregoing is merely presently preferred embodiments of the present invention, the equivalent change that all claims according to the present invention are done
Change, all should belong to protection scope of the present invention.
It can be applied to using the soft starting circuit of technical solution of the present invention in the Single-Phase Inverter Source of various low-power.
Claims (2)
1. a kind of soft starting circuit applied in low-power Single-Phase Inverter Source, including rectification circuit (2), power module (1),
Soft start resistance (3) and busbar capacitor (4), it is characterised in that: the power module (1) is six pipe three-phase bridge power modules, institute
The output plus terminal (21) for stating rectification circuit (2) is directly connected to the anode (113) of power module (1), the rectification circuit (2)
Output negative terminal (22) is directly connected to the negative terminal (114) of power module (1)；One end of the soft start resistance (3) is connected to institute
The anode (113) of power module (1) is stated, the other end is connected to the midpoint end (117) of the third phase bridge arm of power module (1)；Institute
State busbar capacitor (4) anode be connected to power module (1) third phase bridge arm midpoint end (117), busbar capacitor (4) it is negative
End is connected to the negative terminal (114) of power module (1)；By third phase bridge arm in power module (1) side switch pipe (103) and its
Anti- and diode (109) parallel combination realizes the bypass to soft start resistance；First phase bridge arm of the power module (1)
The output end of midpoint end (115) and the midpoint end (116) of the second phase bridge arm as inverter.
2. a kind of soft starting circuit applied in low-power Single-Phase Inverter Source, including rectification circuit (2), power module (1),
Soft start resistance (3) and busbar capacitor (4), it is characterised in that: the power module (1) is six pipe three-phase bridge power modules, institute
The output plus terminal (21) for stating rectification circuit (2) is directly connected to the anode (113) of power module (1), the rectification circuit (2)
Output negative terminal (22) is directly connected to the negative terminal (114) of power module (1)；One end of the soft start resistance (3) is connected to function
The midpoint end (117) of rate module (1) third phase bridge arm, the other end are connected to the negative terminal (114) of power module (1), busbar capacitor
(4) anode is connected to the anode (113) of power module (1), and negative terminal is connected to the midpoint of the third phase bridge arm of power module (1)
It holds (117), i.e., by the side switch pipe (106) of third phase bridge arm in power module (1) and its anti-and diode (112) parallel connection
The bypass to soft start resistance is realized in combination；The midpoint end (115) of first phase bridge arm of the power module (1) and the second phase bridge
Output end of the midpoint end (116) of arm as inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510985000.6A CN106921287B (en) | 2015-12-25 | 2015-12-25 | A kind of soft starting circuit applied in low-power Single-Phase Inverter Source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510985000.6A CN106921287B (en) | 2015-12-25 | 2015-12-25 | A kind of soft starting circuit applied in low-power Single-Phase Inverter Source |
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| Publication Number | Publication Date |
|---|---|
| CN106921287A CN106921287A (en) | 2017-07-04 |
| CN106921287B true CN106921287B (en) | 2019-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510985000.6A Active CN106921287B (en) | 2015-12-25 | 2015-12-25 | A kind of soft starting circuit applied in low-power Single-Phase Inverter Source |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113824302A (en) * | 2021-10-15 | 2021-12-21 | 苏州伟创电气科技股份有限公司 | Soft start circuit, method and device and electronic equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202167981U (en) * | 2011-08-09 | 2012-03-14 | 湖南中科电气股份有限公司 | Power unit driving pulse transmission and communication system for high voltage frequency converter |
| CN205336097U (en) * | 2015-12-25 | 2016-06-22 | 新大陆科技集团有限公司 | Be applied to soft start circuit among single -phase invertion power supply of low -power |
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2015
- 2015-12-25 CN CN201510985000.6A patent/CN106921287B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202167981U (en) * | 2011-08-09 | 2012-03-14 | 湖南中科电气股份有限公司 | Power unit driving pulse transmission and communication system for high voltage frequency converter |
| CN205336097U (en) * | 2015-12-25 | 2016-06-22 | 新大陆科技集团有限公司 | Be applied to soft start circuit among single -phase invertion power supply of low -power |
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| CN106921287A (en) | 2017-07-04 |
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