CN106549574A - High-power DC/DC converter system and its control method - Google Patents
High-power DC/DC converter system and its control method Download PDFInfo
- Publication number
- CN106549574A CN106549574A CN201611050011.6A CN201611050011A CN106549574A CN 106549574 A CN106549574 A CN 106549574A CN 201611050011 A CN201611050011 A CN 201611050011A CN 106549574 A CN106549574 A CN 106549574A
- Authority
- CN
- China
- Prior art keywords
- module
- output
- judge module
- voltage
- control system
- 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
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000005070 sampling Methods 0.000 claims abstract description 24
- 238000004891 communication Methods 0.000 claims abstract description 7
- 230000000052 comparative effect Effects 0.000 claims abstract description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 11
- 229910052710 silicon Inorganic materials 0.000 claims description 11
- 239000010703 silicon Substances 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 6
- 230000006378 damage Effects 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators
Abstract
The present invention relates to high-power DC/DC converter system and its control method, belong to dcdc converter field, including input starting module, IGBT module, drive module, fly-wheel diode, LC filter circuits, control system, voltage sampling circuit, current sampling circuit and display and communication module；The control system includes high input voltage judge module, output voltage judge module and output current judge module；Whether the high input voltage judge module judges to be input into high pressure in normal range of operation, the output voltage judge module judges whether output voltage reaches output voltage rated value, the output current judge module receives the real-time value signal of output current and judges whether output current instantaneous value reaches real-time current limiting threshold, according to the comparative result of high input voltage judge module and output voltage judge module and output current judge module to drive module output signal, drive module exports respective drive signal to IGBT module to the control system.
Description
Technical field
The present invention relates to dcdc converter field, more particularly to high-power DC/DC converter system and its control method.
Background technology
On-off action of the dcdc converter using power semiconductor device, adjusts output voltage, and which reconciles high precision, dynamic
Response is fast, saves energy.
For DC/DC changers conventional at present, typically directly add DC high voltage without any process, this can draw
The dash current of moment is played, especially for high-power charger, its extent of injury to electrical device is very high, and this just needs
Equipment to be made current peak when upper electric is started from scratch, and reduces dash current.
The way of traditional dcdc converter is that current-limiting resistance adds relay (or controllable silicon) to combine, and the shortcoming of the way is not
Can realize that electric current gradually increases from zero, then for high-power DC/DC converter (such as more than 40Kw), still exist larger
Impact, and in order to reduce infringement of the impact to device, the capacity of each components and parts need to be increased, substantially more than 2 times, such case
Under, the loss of start-up course current-limiting resistance is big, and heating is serious；When dcdc converter is frequent powered up, dcdc converter will be continuously more
Task will generate heat more seriously in starting state, current-limiting resistance, make dcdc converter produce failure.
The content of the invention
In order to solve the above problems, the invention provides a kind of high-power DC/DC converter system and its control method, solution
In prior art of having determined for reduce infringement of the rush of current to device, increase each components and parts capacity and caused current-limiting resistance
Fever phenomenon is serious, and dcdc converter is also easy to produce the defect of failure.
The present invention is employed the following technical solutions and realizes above-mentioned purpose：
High-power DC/DC converter system, including input starting module, IGBT module, drive module, fly-wheel diode, LC
Filter circuit, control system, voltage sampling circuit, current sampling circuit and display and communication module；The control system includes
High input voltage judge module, output voltage judge module and output current judge module；The input starting module accesses high pressure
Input, input starting module are connected with the high input voltage judge module in the C1 terminals and control system of IGBT module respectively, institute
The E1 ends for stating IGBT module are connected with fly-wheel diode and LC filter circuits respectively, the other end and the drive module phase of IGBT module
Even, the drive module is connected with control system, and the LC filter circuits connect voltage sampling circuit and current sampling circuit respectively,
The voltage sampling circuit and current sampling circuit are also sentenced with the output voltage judge module and output current of control system respectively
Disconnected module is connected, and the control system is connected with the display and communication module, and the LC filter circuits are connected with load；It is described
Input starting module include resistance, controllable silicon and input capacitance, one end of the resistance is extremely connected with controllable silicon A, the other end with
Controllable silicon K poles and input capacitance Ci are connected.
Whether the high input voltage judge module judges to be input into high pressure in normal range of operation, and the output voltage judges
Module judges whether output voltage reaches output voltage rated value, and the output current judge module receives output current instantaneous value
Signal simultaneously judges whether output current instantaneous value reaches real-time current limiting threshold, and the control system is according to high input voltage judge module
With the comparative result of output voltage judge module and output current judge module to drive module output signal, drive module to
IGBT module exports respective drive signal.
The chip model of the control system is UC2844；
The chip model of the drive module is 2SD106AI-17；
Model 2MBI450VH-120-50 of the IGBT module；
Model LV25-P of voltage sensor in the voltage sampling circuit；
The present invention also provides the control method using high-power DC/DC converter system, comprises the following steps：
S1：During original state, default high input voltage normal operating value scope and output voltage rated value；
S2：High input voltage is accessed, after the t0 periods, the high input voltage judge module of control system judges that high input voltage is
It is no in the range of normal operating value；If so, execution step S4, if it is not, then execution step S3；
S3：Control system output forbids drive signal, IGBT to end, and without output, system does not work；
S4：Input starting module connects high input voltage, and it is defeated that output voltage judge module receiving voltage sample circuit feeds back
Go out voltage signal, and judge whether output voltage reaches rated value；If so, execution step S7, if it is not, then execution step S5；
S5：Output current judge module receives the real-time value signal of output current of current sampling circuit feedback, control system
According to the real-time value signal of output current, the threshold values of electric current peak values in real time is gradually tuned up, becomes larger the dutycycle of drive signal,
IGBT module is opened, output current instantaneous value is gradually increased continuously, and ensure that electric current peak values in real time is less than real-time flow-limiting valve
Value, execution step S6；
S6：Output voltage judge module judges whether output voltage reaches rated value；If so, execution step S7, if it is not, holding
Row step S5；
S7：Stop the increase of electric current peak values in real time threshold values, terminate start-up course.
After the t0 moment, output current growth is represented by：
I=at (1)
Wherein, I is output current, and t is the time, and a is constant.
Compared with prior art, the beneficial effects of the present invention is, the system and its control method effectively prevent electricity
When big charging surge impact electric current to components and parts, the particularly damage to IGBT module, prevent the failure propagation of circuit, reduce
Hardware cost, improves system reliability, while the Changing Pattern by adjusting dutycycle, can to output current size and
Voltage swing is adjusted, the starting characteristic required for reaching.
Description of the drawings
Fig. 1 is the circuit theory diagrams of high-power DC/DC converter system of the present invention；
Fig. 2 is the module frame chart of control system of the present invention；
Fig. 3 is the control method flow chart of the present invention；
Fig. 4 is the task driven oscillogram of the present invention.
Specific embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail.
As shown in figure 1, the high-power DC/DC converter system of the present invention, including input starting module, IGBT module, driving
Module, fly-wheel diode, LC filter circuits, control system, voltage sampling circuit, current sampling circuit and display and communication mould
Block；Control system includes high input voltage judge module, output voltage judge module and output current judge module；Input starts mould
Block accesses high input voltage, and input starting module judges mould with the high input voltage in the C1 terminals and control system of IGBT module respectively
Block is connected, and the E1 ends of IGBT module are connected with fly-wheel diode and LC filter circuits respectively, the other end and the driving of IGBT module
Module is connected, and drive module is connected with control system, and LC filter circuits connect voltage sampling circuit and current sampling circuit respectively, electricity
Pressure sample circuit and current sampling circuit output voltage judge module and output current judge module also respectively with control system
It is connected, control system is connected with display and communication module, LC filter circuits are connected with load；Input starting module include resistance,
Controllable silicon and input capacitance, one end of resistance are extremely connected with controllable silicon A, and the other end is connected with controllable silicon K poles and input capacitance Ci.
As shown in Fig. 2 whether high input voltage judge module judges to be input into high pressure in normal range of operation, output voltage is sentenced
Disconnected module judges whether output voltage reaches output voltage rated value, and output current judge module receives output current instantaneous value letter
Number and judge whether output current instantaneous value reaches real-time current limiting threshold, control system is according to high input voltage judge module and output
, to drive module output signal, drive module is to IGBT module for the comparative result of voltage judge module and output current judge module
Output respective drive signal.
In the present embodiment, the chip of control system adopts the chip of UC2844, drive module to adopt 2SD106AI-17,
IGBT module adopts 2MBI450VH-120-50, and in voltage sampling circuit, voltage sensor adopts LV25-P.
As shown in figure 3, the control method of the high-power DC/DC converter for the present invention, comprises the following steps：
S1：During original state, default high input voltage normal operating value scope and output voltage rated value；
The working value scope that the present embodiment sets each technical parameter is as follows,
| Technical parameter | Numerical value |
| High input voltage normal operating value | (300-900)Vd.c |
| Output voltage rated value | 110Vd.c |
S2：High input voltage is accessed, after the t0 periods, the high input voltage judge module of control system judges that high input voltage is
It is no in normal operating value scope (300-900) Vd.c；If so, execution step S4, if it is not, then execution step S3；
S3：Control system output forbids drive signal, IGBT to end, and without output, system does not work；
S4：Input starting module connects high input voltage, and it is defeated that output voltage judge module receiving voltage sample circuit feeds back
Go out voltage signal, and judge whether output voltage reaches rated value 110Vd.c；If so, execution step S7, if it is not, then performing step
Rapid S5；
S5：Output current judge module receives the output current peak values in real time signal of current sampling circuit feedback, control system
System gradually tunes up the threshold values of electric current peak values in real time, the dutycycle of drive signal is gradually become according to the real-time value signal of output current
Greatly, IGBT module is opened, as shown in figure 4, making output current instantaneous value gradually increase continuously, and ensures that electric current peak values in real time does not surpass
Cross real-time current limiting threshold, execution step S6；
S6：Output voltage judge module judges whether output voltage reaches rated value；If so, execution step S7, if it is not, holding
Row step S5；
S7：Stop the increase of electric current peak values in real time threshold values, terminate start-up course.
As shown in figure 4, after the t0 moment, output current growth is represented by：
I=at (1)
Wherein, I is output current, and t is the time, and a is constant.
Load in the present embodiment is high capacity cell, and electric current when reaching rated output voltage is I1=300A, according to
High-power DC/DC converter characteristic, sets a as 60, then used time t=5s.
As shown in figure 1, the input starting module that the present embodiment is adopted is after high-tension electricity is accessed, first by resistance to electric capacity
Ci charges, when high input voltage judge module detection high-tension electricity normal (i.e. A, K both end voltage equal and in normal range of operation)
Afterwards, that is, controlled silicon conducting is triggered by resistance R short circuits, be input into startup and complete.Input capacitance Ci buffering charges, and generates less than the arteries and veins of 1A
Electric current is rushed, as shown in figure 4, the electric current that the start-up course is produced is shown in 0 to the waveform between t0.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within scope of the presently claimed invention.In addition, in various embodiments of the present invention
Technical characteristic may be used alone, can also be used in combination.
Claims (8)
1. high-power DC/DC converter system, it is characterised in that including input starting module, IGBT module, drive module, afterflow
Diode, LC filter circuits, control system, voltage sampling circuit, current sampling circuit and display and communication module；The control
System includes high input voltage judge module, output voltage judge module and output current judge module；The input starting module
Access high input voltage, be input into starting module respectively with the C1 terminals and control system of IGBT module in high input voltage judge module
It is connected, the E1 ends of the IGBT module are connected with fly-wheel diode and LC filter circuits respectively, the other end and the drive of IGBT module
Dynamic model block is connected, and the drive module is connected with control system, and the LC filter circuits connect voltage sampling circuit and electric current respectively
Sample circuit, the voltage sampling circuit and current sampling circuit also respectively with the output voltage judge module of control system and defeated
Go out electric current judge module be connected, the control system with it is described display and communication module be connected, the LC filter circuits with load
It is connected；The input starting module includes resistance, controllable silicon and input capacitance, and one end of the resistance is extremely connected with controllable silicon A,
The other end is connected with controllable silicon K poles and input capacitance Ci.
2. high-power DC/DC converter system according to claim 1, it is characterised in that：The high input voltage judge module
Whether judge to be input into high pressure in normal range of operation, the output voltage judge module judges whether output voltage reaches output
Voltage rating, the output current judge module receive the real-time value signal of output current and whether judge output current instantaneous value
Real-time current limiting threshold is reached, the control system is according to high input voltage judge module and output voltage judge module and output current
The comparative result of judge module exports respective drive signal to IGBT module to drive module output signal, drive module.
3. high-power DC/DC converter system according to claim 1, it is characterised in that the control system it is chip-shaped
Number be UC2844.
4. high-power DC/DC converter system according to claim 1, it is characterised in that the drive module it is chip-shaped
Number be 2SD106AI-17.
5. high-power DC/DC converter system according to claim 1, it is characterised in that the model of the IGBT module
2MBI450VH-120-50。
6. high-power DC/DC converter system according to claim 1, it is characterised in that electricity in the voltage sampling circuit
Model LV25-P of pressure sensor.
7. the control method based on the high-power DC/DC converter system described in claim 1, it is characterised in that including following step
Suddenly：
S1：During original state, default high input voltage normal operating value scope and output voltage rated value；
S2：High input voltage is accessed, after the t0 periods, the high input voltage judge module of control system judges that whether high input voltage exists
In the range of normal operating value；If so, execution step S4, if it is not, then execution step S3；
S3：Control system output forbids drive signal, IGBT to end, and without output, system does not work；
S4：Input starting module connects high input voltage, the output electricity of output voltage judge module receiving voltage sample circuit feedback
Pressure signal, and judge whether output voltage reaches rated value；If so, execution step S7, if it is not, then execution step S5；
S5：Output current judge module receive current sampling circuit feedback the real-time value signal of output current, control system according to
The real-time value signal of output current, gradually tunes up the threshold values of electric current peak values in real time, becomes larger the dutycycle of drive signal, open-minded
IGBT module, makes output current instantaneous value gradually increase continuously, and ensures that electric current peak values in real time is less than real-time current limiting threshold, holds
Row step S6；
S6：Output voltage judge module judges whether output voltage reaches rated value；If so, execution step S7, if it is not, performing step
Rapid S5；
S7：Stop the increase of electric current peak values in real time threshold values, terminate start-up course.
8. the control method of high-power DC/DC converter system according to claim 7, it is characterised in that the t0 moment with
Afterwards, output current increases and is represented by：
I=at (1)
Wherein, I is output current, and t is the time, and a is constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611050011.6A CN106549574A (en) | 2016-11-25 | 2016-11-25 | High-power DC/DC converter system and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611050011.6A CN106549574A (en) | 2016-11-25 | 2016-11-25 | High-power DC/DC converter system and its control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106549574A true CN106549574A (en) | 2017-03-29 |
Family
ID=58394958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611050011.6A Pending CN106549574A (en) | 2016-11-25 | 2016-11-25 | High-power DC/DC converter system and its control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106549574A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546981A (en) * | 2017-09-01 | 2018-01-05 | 歌尔股份有限公司 | A kind of power circuit |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2560161Y (en) * | 2002-07-23 | 2003-07-09 | 沈阳新阳光机电科技有限公司 | Energy-saving DC electric motor chopping speed controller |
| CN1832313A (en) * | 2005-03-07 | 2006-09-13 | 富士电机电子设备技术株式会社 | Control method for switching power supply circuit |
| US20070132438A1 (en) * | 2005-12-14 | 2007-06-14 | Kyung-Oun Jang | Current controlled switching mode power supply |
| CN101383503A (en) * | 2007-09-03 | 2009-03-11 | 深圳市汇川技术股份有限公司 | System and method for detecting short circuit to ground of motor |
| CN101674018A (en) * | 2009-10-09 | 2010-03-17 | 南京航空航天大学 | Multi-module combined converter and soft start control method thereof |
| JP2011205727A (en) * | 2010-03-24 | 2011-10-13 | Toyota Central R&D Labs Inc | Current estimation device and dcdc converter control system |
| CN102427262A (en) * | 2011-12-13 | 2012-04-25 | 南京理工大学 | Elevator braking energy feedback and control system based on super capacitor |
| CN102497113A (en) * | 2011-11-14 | 2012-06-13 | 江苏科技大学 | High-frequency high-voltage power supply for electrostatic precipitation, and control method of the same |
| US20120176100A1 (en) * | 2008-07-02 | 2012-07-12 | Pierre Tisserand | Method for controlling a rotating electric machine, particularly an alternator |
| CN102695328A (en) * | 2011-03-23 | 2012-09-26 | 松下电器产业株式会社 | Lighting device and illumination apparatus |
| CN102969974A (en) * | 2011-08-31 | 2013-03-13 | 株式会社牧田 | Electric power tool |
| CN103312200A (en) * | 2013-06-28 | 2013-09-18 | 成都芯源系统有限公司 | Power converter, current limiting unit, control circuit and related control method |
| CN103746436A (en) * | 2013-12-27 | 2014-04-23 | 深圳市光大激光科技股份有限公司 | Solid laser power supply with constant output power |
| CN103887864A (en) * | 2014-03-18 | 2014-06-25 | 沈阳隆基电磁科技股份有限公司 | Charger special for storage battery matched with lifting electromagnet |
| CN203896209U (en) * | 2014-06-19 | 2014-10-22 | 大连理工常州研究院有限公司 | Low-voltage three-phase input voltage boosting and reducing DC power supply device |
| CN104470159A (en) * | 2014-12-31 | 2015-03-25 | 南通大学 | LED lighting system |
| JP2015106980A (en) * | 2013-11-29 | 2015-06-08 | 株式会社東芝 | Motor drive device and motor control method |
| CN204497987U (en) * | 2015-04-24 | 2015-07-22 | 南京华士电子科技有限公司 | High-voltage great-current energy in bidirectional flow circuit |
| CN206364703U (en) * | 2016-11-25 | 2017-07-28 | 沈阳新阳光机电科技有限公司 | High-power DC/DC converter system |
-
2016
- 2016-11-25 CN CN201611050011.6A patent/CN106549574A/en active Pending
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2560161Y (en) * | 2002-07-23 | 2003-07-09 | 沈阳新阳光机电科技有限公司 | Energy-saving DC electric motor chopping speed controller |
| CN1832313A (en) * | 2005-03-07 | 2006-09-13 | 富士电机电子设备技术株式会社 | Control method for switching power supply circuit |
| US20070132438A1 (en) * | 2005-12-14 | 2007-06-14 | Kyung-Oun Jang | Current controlled switching mode power supply |
| CN101383503A (en) * | 2007-09-03 | 2009-03-11 | 深圳市汇川技术股份有限公司 | System and method for detecting short circuit to ground of motor |
| US20120176100A1 (en) * | 2008-07-02 | 2012-07-12 | Pierre Tisserand | Method for controlling a rotating electric machine, particularly an alternator |
| CN101674018A (en) * | 2009-10-09 | 2010-03-17 | 南京航空航天大学 | Multi-module combined converter and soft start control method thereof |
| JP2011205727A (en) * | 2010-03-24 | 2011-10-13 | Toyota Central R&D Labs Inc | Current estimation device and dcdc converter control system |
| CN102695328A (en) * | 2011-03-23 | 2012-09-26 | 松下电器产业株式会社 | Lighting device and illumination apparatus |
| CN102969974A (en) * | 2011-08-31 | 2013-03-13 | 株式会社牧田 | Electric power tool |
| CN102497113A (en) * | 2011-11-14 | 2012-06-13 | 江苏科技大学 | High-frequency high-voltage power supply for electrostatic precipitation, and control method of the same |
| CN102427262A (en) * | 2011-12-13 | 2012-04-25 | 南京理工大学 | Elevator braking energy feedback and control system based on super capacitor |
| CN103312200A (en) * | 2013-06-28 | 2013-09-18 | 成都芯源系统有限公司 | Power converter, current limiting unit, control circuit and related control method |
| JP2015106980A (en) * | 2013-11-29 | 2015-06-08 | 株式会社東芝 | Motor drive device and motor control method |
| CN103746436A (en) * | 2013-12-27 | 2014-04-23 | 深圳市光大激光科技股份有限公司 | Solid laser power supply with constant output power |
| CN103887864A (en) * | 2014-03-18 | 2014-06-25 | 沈阳隆基电磁科技股份有限公司 | Charger special for storage battery matched with lifting electromagnet |
| CN203896209U (en) * | 2014-06-19 | 2014-10-22 | 大连理工常州研究院有限公司 | Low-voltage three-phase input voltage boosting and reducing DC power supply device |
| CN104470159A (en) * | 2014-12-31 | 2015-03-25 | 南通大学 | LED lighting system |
| CN204497987U (en) * | 2015-04-24 | 2015-07-22 | 南京华士电子科技有限公司 | High-voltage great-current energy in bidirectional flow circuit |
| CN206364703U (en) * | 2016-11-25 | 2017-07-28 | 沈阳新阳光机电科技有限公司 | High-power DC/DC converter system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546981A (en) * | 2017-09-01 | 2018-01-05 | 歌尔股份有限公司 | A kind of power circuit |
| CN107546981B (en) * | 2017-09-01 | 2019-11-29 | 歌尔股份有限公司 | A kind of power circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8045309B2 (en) | Magnetic energy recovery switch having protective circuit | |
| CN102412717B (en) | Lossless soft start device and method for frequency converter | |
| CN105958823A (en) | Current continuous high-gain switch voltage rise quasi-Z-source converter circuit | |
| CN104009633B (en) | A kind of electric current continuous high-gain DC-DC converter circuit | |
| CN103529890B (en) | A kind of soft starting device and method | |
| CN112993957B (en) | Circuit and method for inhibiting power-on surge current of high-capacity capacitor | |
| CN108900078B (en) | Flying capacitor type three-level converter and control method thereof | |
| CN104820183A (en) | Method and device for detecting on/off of bypass relay in boost chopper circuit | |
| CN208209812U (en) | A kind of highpowerpulse load power source soft starting device | |
| CN104617581A (en) | Soft-start control method of four-bridge arm active power filter | |
| CN108512409A (en) | A kind of highpowerpulse load power source soft starting device and start method | |
| CN104391535A (en) | Method and device for equalizing voltage of DC bus capacitor | |
| US20220029582A1 (en) | Photovoltaic inverter, photovoltaic system, and method for controlling discharging | |
| CN204794688U (en) | DC power supply pulse load adapter | |
| CN206364703U (en) | High-power DC/DC converter system | |
| CN106549574A (en) | High-power DC/DC converter system and its control method | |
| CN202260996U (en) | Driving circuit of series-connection insulated gate bipolar transistor (IGBT) | |
| CN103248280A (en) | TCR soft start and SVC dynamic reactive power compensation device and soft start and dynamic reactive power compensation method | |
| CN103904884B (en) | A kind of electron capacitance circuit and control method thereof | |
| CN105227001B (en) | A kind of frequency conversion speed-adjusting system and its method for multi-load | |
| WO2018058819A1 (en) | Power limiting circuit of inverter apparatus, and inverter apparatus | |
| CN107342678A (en) | A kind of Switching Power Supply output overshoot suppression circuit and Switching Power Supply | |
| CN203289169U (en) | Pre-charging device of power unit cascaded high-voltage inverter | |
| CN203278211U (en) | Transformer excitation inrush current eliminating device | |
| CN106329901B (en) | Overcurrent protection peripheral circuit and electrical equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for 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: 20170329 |