CN103956892A - Quick soft start circuit for three-phase voltage PWM rectifier and control method thereof - Google Patents
Quick soft start circuit for three-phase voltage PWM rectifier and control method thereof Download PDFInfo
- Publication number
- CN103956892A CN103956892A CN201410135059.1A CN201410135059A CN103956892A CN 103956892 A CN103956892 A CN 103956892A CN 201410135059 A CN201410135059 A CN 201410135059A CN 103956892 A CN103956892 A CN 103956892A
- Authority
- CN
- China
- Prior art keywords
- electric capacity
- switching tube
- little
- igbt7
- dsp processor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses a quick soft start circuit for a three-phase voltage PWM rectifier and a control method of the quick soft start circuit. The quick soft start circuit comprises a first small capacitor, a second large capacitor, a seventh switching tube and a DSP. The anode of the first small capacitor, the output end of the positive electrode of a three-phase rectifier bridge and the collector electrode of the seventh switching tube are connected together. The cathode of the first small capacitor, the output end of the negative electrode of the three-phase rectifier bridge, the cathode of the second large capacitor and one end of a load are connected together. The emitting electrode of the seventh switching tube, the anode of the second large capacitor and the other end of the load are connected together. The DSP controls the on-off state of the seventh switching tube through a signal output by an IO port. The quick soft start circuit for the three-phase voltage PWM rectifier achieves soft start by charging the second large capacitor in a time-sharing mode. Besides, the start speed is high, the circuit is not provided with a current-limiting resistor, and therefore loss is small in the starting process.
Description
Technical field
The present invention relates to three phase rectifier technology, relate in particular to Three-phase PWM Voltage Rectifier Quick soft-start circuit and control method thereof, belong to power electronics and exchange technical field.
Background technology
Three-phase PWM Voltage Rectifier has the plurality of advantages such as unity power factor, current harmonics are low, energy in bidirectional flow, becomes one of hot subject of current power electronic applications research.The soft Starting Technology of Three-phase PWM Voltage Rectifier is one of key technology of Three-phase PWM Voltage Rectifier useization.Due to the large electric capacity of DC side, make circuit start moment can produce larger impulse current, not only affect the life-span of components and parts in circuit, can cause great impact to electrical network simultaneously.The main purpose of soft Starting Technology is exactly the impulse current while reducing to start, the conventional current-limiting resistance of current soft starting circuit is followed relay parallel connection with paralleled power switches or current-limiting resistance, changing technical disadvantages is that start-up time is longer, more than for high power three-phase voltage type PWM rectifier, will reach 10s start-up time especially, soft start still there will be larger impulse current after finishing simultaneously, and the loss of this soft starting circuit current-limiting resistance in the time starting is larger.
Summary of the invention
The deficiency existing for prior art, the open Three-phase PWM Voltage Rectifier Quick soft-start circuit of the present invention and control method thereof, can eliminate the impulse current while startup, toggle speed fast and while starting loss little.
The present invention is for achieving the above object, and the technical scheme adopting is as follows:
Three-phase PWM Voltage Rectifier Quick soft-start circuit, it comprises: the first little electric capacity, second largest electric capacity, the 7th switching tube and for controlling the dsp processor of the 7th switching tube break-make; The collector electrode of the anode of described the first little electric capacity and three-phase commutation bridge cathode output end, the 7th switching tube links together, and the negative electrode of negative electrode and three-phase commutation bridge cathode output end, second largest electric capacity, one end of load link together; The other end of described the 7th emitter of switching tube and the anode of second largest electric capacity, load links together; Described dsp processor is exported the on off state of road signal controlling the 7th switching tube by IO mouth.
Control method for above-mentioned Three-phase PWM Voltage Rectifier Quick soft-start circuit is: when circuit start, the voltage of three-phase commutation bridge output charges rapidly to the first little electric capacity, because the capacity of the first little electric capacity is very little, so charging current is very little; Dsp processor is exported the break-make of road square wave control the 7th switching tube simultaneously; In the time that the state of the square wave of dsp processor output is high level, the 7th switching tube conducting, the voltage of three-phase commutation bridge output is given second largest capacitor charging; In the time that the state of the square wave of dsp processor output is low level, the 7th switching tube turn-offs, and now second largest electric capacity does not charge; In the time that second largest capacitor charging completes, dsp processor output high level, makes the 7th switching tube conducting always; Because second largest electric capacity is to fill at set intervals time electricity, so charging current is also very little, like this by the cooperation charging to the first little electric capacity and second largest electric capacity, the soft start of completing circuit, the impulse current while effectively suppressing to start.
Compare with prior art scheme, the present invention has the following advantages and technique effect:
1, circuit structure is simple, and toggle speed is fast;
2, eliminated the impulse current while startup;
3, startup loss is little.
Brief description of the drawings
Fig. 1 is the Three-phase PWM Voltage Rectifier circuit diagram that comprises soft starting circuit of the present invention.
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the invention is described further, but enforcement of the present invention and protection are not limited to this.
As shown in Figure 1, for the Three-phase PWM Voltage Rectifier circuit diagram that comprises soft starting circuit of the present invention, figure comprises three-phase alternating current potential source Es, three-phase reactor L, the first switching tube IGBT1, second switch pipe IGBT2, the 3rd switching tube IGBT3, the 4th switching tube IGBT4, the 5th switching tube IGBT5, the 6th switching tube IGBT6, soft starting circuit 1, load R
l; Described soft starting circuit 1 comprises: the 7th switching tube IGBT7, the first little capacitor C
0, second largest capacitor C
1, dsp processor; Described three-phase alternating current potential source Es is connected with three-phase reactor L one end; Described the first switching tube IGBT1, second switch pipe IGBT2, the 3rd switching tube IGBT3, the 4th switching tube IGBT4, the 5th switching tube IGBT5, the 6th switching tube IGBT6 composition three-phase commutation bridge; The other end of described three-phase reactor Ls is connected with 3 brachium pontis mid points (A, B, C) of three-phase commutation bridge respectively; Described the first little capacitor C
0anode and the collector electrode of three-phase commutation bridge cathode output end P+, the 7th switching tube IGBT7 link together, negative electrode and three-phase commutation bridge cathode output end P-, second largest capacitor C
1negative electrode, load R
lone end link together; The emitter of described the 7th switching tube IGBT7 and second largest capacitor C
1anode, load R
lthe other end link together; Described dsp processor is exported the on off state of road signal controlling a 7th switching tube IGBT7 by IO mouth.
As preferably, described dsp processor is selected the dsp processor of Texas Instruments's 2000 series.
The first described little capacitor C
0for little electrochemical capacitor, the electrochemical capacitor of for example optional 100uF.
Described second largest capacitor C
1for example, for large electrochemical capacitor, the electrochemical capacitor of optional 4700uF, realize stable DC and survey voltage and suppress DC side harmonics voltage.
The control of above-mentioned soft starting circuit is: when circuit start, and the first little capacitor C
0charging rapidly, due to the first little capacitor C
0capacity very little, so charging current is very little; Dsp processor is exported the break-make of road square wave control a 7th switching tube IGBT7 simultaneously, and it is the square wave that 2KHz, duty ratio are 50% that described square wave can be set as frequency; In the time that the state of the square wave of dsp processor output is high level, the 7th switching tube IGBT7 conducting, the voltage of rectifier bridge output is given second largest capacitor C
1charging; In the time that the state of the square wave of dsp processor output is low level, the 7th switching tube IGBT7 turn-offs, now second largest capacitor C
1do not charge; When second largest capacitor C
1while charging, dsp processor output high level, makes the 7th switching tube IGBT7 conducting always; Due to second largest capacitor C
1be to fill at set intervals time electricity, so charging current is also very little, pass through the first little capacitor C like this
0with second largest capacitor C
1cooperation charging, the soft start of completing circuit, the impulse current while effectively suppressing to start.
Those skilled in the art can make various amendments to this specific embodiment or supplement or adopt similar mode to substitute under the prerequisite without prejudice to principle of the present invention and essence, but these changes all fall into protection scope of the present invention.Therefore the technology of the present invention scope is not limited to above-described embodiment.
Claims (4)
1. Three-phase PWM Voltage Rectifier Quick soft-start circuit, is characterized in that comprising: the first little electric capacity (C
0), second largest electric capacity (C
1), the 7th switching tube (IGBT7) and for controlling the dsp processor of the 7th switching tube break-make; Described the first little electric capacity (C
0) anode and the collector electrode of three-phase commutation bridge cathode output end (P+), the 7th switching tube (IGBT7) link together, negative electrode and three-phase commutation bridge cathode output end (P-), second largest electric capacity (C
1) negative electrode, load (R
l) one end link together; The emitter of described the 7th switching tube (IGBT7) and second largest electric capacity (C
1) anode, load (R
l) the other end link together; Described dsp processor is exported the on off state of road signal controlling the 7th switching tube (IGBT7) by IO mouth.
2. Three-phase PWM Voltage Rectifier Quick soft-start circuit according to claim 1, is characterized in that described dsp processor selects the dsp processor of Texas Instruments's 2000 series.
3. Three-phase PWM Voltage Rectifier Quick soft-start circuit according to claim 1, is characterized in that varying in size of two electric capacity, and wherein the first little electric capacity is little electrochemical capacitor, and second largest electric capacity is large electrochemical capacitor.
4. for the control method of Three-phase PWM Voltage Rectifier Quick soft-start circuit claimed in claim 1 be: when circuit start, the voltage of three-phase commutation bridge output is given the first little electric capacity (C
0) charging rapidly, due to the first little electric capacity (C
0) capacity very little, so charging current is very little; Dsp processor is exported the break-make of road square wave control the 7th switching tube (IGBT7) simultaneously; In the time that the state of the square wave of dsp processor output is high level, the 7th switching tube (IGBT7) conducting, the voltage of three-phase commutation bridge output is given second largest electric capacity (C
1) charging; In the time that the state of the square wave of dsp processor output is low level, the 7th switching tube (IGBT7) turn-offs, now second largest electric capacity (C
1) do not charge; As second largest electric capacity (C
1) while having charged, dsp processor output high level, makes the 7th switching tube (IGBT7) conducting always; Due to second largest electric capacity (C
1) be to fill at set intervals time electricity, so charging current is also very little, pass through the first little electric capacity (C like this
0) and second largest electric capacity (C
1) cooperation charging, the soft start of completing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410135059.1A CN103956892A (en) | 2014-04-04 | 2014-04-04 | Quick soft start circuit for three-phase voltage PWM rectifier and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410135059.1A CN103956892A (en) | 2014-04-04 | 2014-04-04 | Quick soft start circuit for three-phase voltage PWM rectifier and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103956892A true CN103956892A (en) | 2014-07-30 |
Family
ID=51334136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410135059.1A Pending CN103956892A (en) | 2014-04-04 | 2014-04-04 | Quick soft start circuit for three-phase voltage PWM rectifier and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103956892A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305802A (en) * | 2015-10-23 | 2016-02-03 | 漳州科华技术有限责任公司 | Rectifier soft start circuit and control method thereof |
| CN107785212A (en) * | 2017-10-31 | 2018-03-09 | 厦门芯阳科技股份有限公司 | A kind of method that resistance-capacitance depressurization passes through exchange way control relay |
| CN107831364A (en) * | 2017-11-15 | 2018-03-23 | 哈尔滨理工大学 | A kind of electric energy harmonic detecting method |
| CN107968431A (en) * | 2017-12-04 | 2018-04-27 | 淮阴师范学院 | A kind of distributed power grid electric energy control method for coordinating |
| CN108020736A (en) * | 2017-11-15 | 2018-05-11 | 哈尔滨理工大学 | A kind of power quality detection method |
| CN109842281A (en) * | 2017-11-24 | 2019-06-04 | 南京德朔实业有限公司 | Electric tool |
| CN113179008A (en) * | 2021-05-12 | 2021-07-27 | 阳光电源股份有限公司 | Multiphase LLC resonance DC/DC circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101631410A (en) * | 2009-08-24 | 2010-01-20 | 英飞特电子（杭州）有限公司 | AC-DC LED drive circuit with high power factor |
| CN102624210A (en) * | 2012-03-29 | 2012-08-01 | 上海交通大学 | Soft start circuit |
| CN203827169U (en) * | 2014-04-04 | 2014-09-10 | 华南理工大学 | Three-phase voltage type PWM rectifier rapid soft start circuit |
-
2014
- 2014-04-04 CN CN201410135059.1A patent/CN103956892A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101631410A (en) * | 2009-08-24 | 2010-01-20 | 英飞特电子（杭州）有限公司 | AC-DC LED drive circuit with high power factor |
| CN102624210A (en) * | 2012-03-29 | 2012-08-01 | 上海交通大学 | Soft start circuit |
| CN203827169U (en) * | 2014-04-04 | 2014-09-10 | 华南理工大学 | Three-phase voltage type PWM rectifier rapid soft start circuit |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305802A (en) * | 2015-10-23 | 2016-02-03 | 漳州科华技术有限责任公司 | Rectifier soft start circuit and control method thereof |
| CN107785212A (en) * | 2017-10-31 | 2018-03-09 | 厦门芯阳科技股份有限公司 | A kind of method that resistance-capacitance depressurization passes through exchange way control relay |
| CN107831364A (en) * | 2017-11-15 | 2018-03-23 | 哈尔滨理工大学 | A kind of electric energy harmonic detecting method |
| CN108020736A (en) * | 2017-11-15 | 2018-05-11 | 哈尔滨理工大学 | A kind of power quality detection method |
| CN109842281A (en) * | 2017-11-24 | 2019-06-04 | 南京德朔实业有限公司 | Electric tool |
| CN109842281B (en) * | 2017-11-24 | 2020-12-01 | 南京德朔实业有限公司 | Electric tool |
| CN107968431A (en) * | 2017-12-04 | 2018-04-27 | 淮阴师范学院 | A kind of distributed power grid electric energy control method for coordinating |
| CN113179008A (en) * | 2021-05-12 | 2021-07-27 | 阳光电源股份有限公司 | Multiphase LLC resonance DC/DC circuit |
| CN113179008B (en) * | 2021-05-12 | 2024-02-09 | 阳光电源股份有限公司 | Multiphase LLC resonance DC/DC circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103956892A (en) | Quick soft start circuit for three-phase voltage PWM rectifier and control method thereof | |
| US11407331B2 (en) | Battery heating system | |
| CN105305802A (en) | Rectifier soft start circuit and control method thereof | |
| CN104242349A (en) | Photovoltaic system with potential induced degradation prevention function and photovoltaic inverter | |
| CN111835221A (en) | DC/AC power conversion device | |
| CN104753445B (en) | Solar power supply apparatus | |
| CN103312211A (en) | Control method of single phase grid-connected inverter | |
| CN115102135A (en) | Thyristor-based low-loss bidirectional direct-current solid-state circuit breaker and control method thereof | |
| CN103414338B (en) | Bidirectional DC/DC translation circuit and converting means | |
| CN103973090B (en) | Three-phase PWM Voltage Rectifier voltage classification soft starting circuit and control method thereof | |
| CN203827169U (en) | Three-phase voltage type PWM rectifier rapid soft start circuit | |
| CN105373016A (en) | Quick cut-off device of thyristor direct current switch and operation method thereof | |
| CN104660025A (en) | Busbar voltage soft starting method of uninterruptible power supply | |
| JP2014045566A (en) | Ac-ac bidirectional power converter | |
| CN212588279U (en) | DC/AC power conversion device structure | |
| CN104167946A (en) | Midpoint clamping type single-phase non-isolated photovoltaic inverter main circuit topology with follow current switch | |
| JP2018068102A (en) | Damper and electric energy conversion device using the same | |
| CN104300821A (en) | Main circuit topology of single-phase non-isolated photovoltaic inverter with follow current clamping switch | |
| JP2016063702A (en) | AC motor drive system | |
| CN203827168U (en) | Three-phase voltage type PWM rectifier voltage grading soft start circuit | |
| CN102427307B (en) | Three-phase four-wire three-level inverter | |
| CN206004637U (en) | IGBT drive circuit, half-bridge electromagnetic heating circuit and induction cooker | |
| CN201282431Y (en) | Active feedback device | |
| WO2021136085A1 (en) | Control signal modulation circuit, inverter, and control system | |
| CN204145327U (en) | A kind of single-phase three-level inverter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140730 |