CN202513826U - Continuously adjustable variable-structure constant-power power supply - Google Patents
Continuously adjustable variable-structure constant-power power supply Download PDFInfo
- Publication number
- CN202513826U CN202513826U CN2012201591170U CN201220159117U CN202513826U CN 202513826 U CN202513826 U CN 202513826U CN 2012201591170 U CN2012201591170 U CN 2012201591170U CN 201220159117 U CN201220159117 U CN 201220159117U CN 202513826 U CN202513826 U CN 202513826U
- Authority
- CN
- China
- Prior art keywords
- power supply
- continuously adjustable
- power
- output
- structure constant
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The utility model relates to a direct current switch power supply, in particular to a continuously adjustable variable-structure constant-power power supply. The continuously adjustable variable-structure constant-power power supply comprises a full-bridge direct current converter and a high-frequency transformer, wherein a primary side of the high-frequency transformer is connected to the full-bridge direct current converter; a secondary side of the high-frequency transformer comprises two groups of diode rectifier bridges, two filter inductors with equal induction values and an output filter capacitor; and a control switch and two bypass diodes are connected between the filter inductors and the filter capacitor. The continuously adjustable variable-structure constant-power power supply works serially when high voltage is output and works in parallel when high current is output, and the adjustment range of the output voltage can be increased. Therefore, the continuously adjustable variable-structure constant-power power supply has relatively good steady-state and dynamic performance, relatively high voltage adjusting rate and load adjusting rate, relatively small output voltage ripple coefficient, and relatively high efficiency within a full output voltage range and can achieve constant power output.
Description
Technical field:
The utility model relates to direct-current switch power supply, specifically is a kind of continuously adjustable change structure constant-power power source.
Background technology:
At present, Switching Power Supply gets into various electronics, electric equipment field in succession, and stored-program control exchange, space technology, computer, communication, radar, household electrical appliance, electron detection device power supply, control appliance power supply etc. have all used Switching Power Supply widely.Known switch power technology mainly adopts: the mode of the compound modulation that modulating frequency and width combines, the mode that changes transformer voltage ratio, the control of employing misphase etc.In adopting the modulating frequency and width control mode, need to change frequency, can bring bigger difficulty for transformer and Filter Design; In adopting the mode that changes transformer voltage ratio, increased the adjustable range of voltage, and be not suitable for the application scenario of big electric current; Though adopt the method for misphase control can realize the voltage-regulation that seamlessly transits, adjustable range is limited.Therefore under many circumstances, existing Switching Power Supply can cause that the system equipment utilance is low, stresses of parts is big, volume is big and problem such as cost height.
The utility model content:
The utility model is intended to solve existing Switching Power Supply exists problem such as above-mentioned, and a kind of tandem working when high pressure export is provided, the continuously adjustable change structure constant-power power source of parallel operation when big electric current is exported.
The utility model solves said problem, and the technical scheme of employing is:
A kind of continuously adjustable change structure constant-power power source; Comprise full-bridge direct current converter, high frequency transformer; Its former limit of said high frequency transformer is connected on the full-bridge direct current converter; Its secondary includes two groups of diode rectifier bridges, two filter inductance and output filter capacitors that the sense value equates, is connected with a control switch and two bypass diodes between said filter inductance and the filter capacitor.
Further, the secondary of said high frequency transformer has two windings, and two windings are connected with the input of two diode rectifier bridge FBR1 and FBR2 respectively, the positive terminal of two diode rectifier bridge FBR1 and FBR2 respectively with two filter inductance L
1And L
2An end connect two filter inductance L
1And L
2The other end between be connected with a bypass diode D
1, be connected with another bypass diode D between the negative pole end of two diode rectifier bridge FBR1 and FBR2
2, filter inductance L
2And be connected with a control switch pipe S between the negative pole end of diode rectifier bridge FBR1, filter inductance L
1And be connected with a filter capacitor C between the negative pole end of diode rectifier bridge FBR2.
The high frequency transformer secondary of the utility model passes through the control to the auxiliary diverter switch of increase, has realized tandem working when big voltage is exported, parallel operation when big electric current is exported, and the while can increase the adjustable range of output voltage again.Therefore, compared with prior art, the beneficial effect of the utility model is: have stable state and dynamic property preferably, realize permanent power output function; Have voltage regulation and load regulation preferably, the output voltage ripple coefficient is also less relatively, in full output voltage range, all has higher relatively efficient.
Fig. 1 is the circuit theory diagrams of the utility model embodiment.
Fig. 2 is the series model equivalent electric circuit.
Fig. 3 is the paralleling model equivalent electric circuit.
Embodiment:
Below in conjunction with embodiment the utility model is described further.
Referring to Fig. 1, a kind of continuously adjustable change structure constant-power power source is by the high frequency transformer of isolated form full-bridge direct current converter FBC, two windings of the winding secondary in former limit, two groups of diode rectifier bridge FBR1 and FBR2, two filter inductance L that the sense value equates
1And L
2, a filter capacitor C, a control switch pipe S and two bypass diode D
1And D
2Form, the former limit of high frequency transformer is connected on the full-bridge direct current converter FBC, and two windings of secondary are connected with the input of diode rectifier bridge FBR1 and FBR2 respectively, the positive terminal of two diode rectifier bridge FBR1 and FBR2 respectively with two filter inductance L
1And L
2An end connect two filter inductance L
1And L
2The other end between be connected with a bypass diode D
1, the negative pole end of two diode rectifier bridge FBR1 and FBR2 is connected with another bypass diode D
2, filter inductance L
2Be connected with a control switch pipe S, filter inductance L with the negative pole end of diode rectifier bridge FBR1
1Be connected with a filter capacitor C with the negative pole end of diode rectifier bridge FBR2.
When the fiducial value of output voltage greater than threshold voltage V
ThThe time, control switch S conducting, booster diode D
1And D
2Reverse bias, two groups of outputs be connected in series (referring to Fig. 2).Flow through the current i of filter inductance
L1And i
L2With the current i that flows through diverter switch S
SEquate average inductor current I
LWith load current I
0Equate, because i
L1=i
L2=I
LSo, the voltage V on the inductance
L1=V
L2=V
L
When the fiducial value of output voltage less than threshold voltage V
ThThe time, control switch S turn-offs, booster diode D
1And D
2Forward bias, two groups of output-parallels connect (referring to Fig. 3).Inductive current i
L1With flow through booster diode D
2Current i
D2Equate inductive current i
L2With booster diode i
D1Equate, and the average inductor current sum equals load current, each rectifier bridge output voltage equates, so the voltage on each inductance is also equal, so i
L1=i
L2=0.5 (i
C+ i
0).Thus, realize the flexible combination of output-parallel, series connection, simplified the design of transformer, effectively reduced cost.
The above only is the preferred embodiment of the utility model, is not the structure of the utility model is done any pro forma restriction.Every technical spirit according to the utility model all still belongs to the scope of the technical scheme of the utility model to any simple modification, equivalent variations and modification that above embodiment did.
Claims (2)
1. continuously adjustable change structure constant-power power source; Comprise full-bridge direct current converter, high frequency transformer; It is characterized in that; Its former limit of said high frequency transformer is connected on the full-bridge direct current converter, and its secondary includes two groups of diode rectifier bridges, two filter inductance and output filter capacitors that the sense value equates, is connected with a control switch and two bypass diodes between said filter inductance and the filter capacitor.
2. continuously adjustable change structure constant-power power source as claimed in claim 1; It is characterized in that; The secondary of said high frequency transformer has two windings; Two windings are connected with the input of two diode rectifier bridge FBR1 and FBR2 respectively, the positive terminal of two diode rectifier bridge FBR1 and FBR2 respectively with two filter inductance L
1And L
2An end connect two filter inductance L
1And L
2The other end between be connected with a bypass diode D
1, be connected with another bypass diode D between the negative pole end of two diode rectifier bridge FBR1 and FBR2
2, filter inductance L
2And be connected with a control switch pipe S between the negative pole end of diode rectifier bridge FBR1, filter inductance L
1And be connected with a filter capacitor C between the negative pole end of diode rectifier bridge FBR2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201591170U CN202513826U (en) | 2012-04-16 | 2012-04-16 | Continuously adjustable variable-structure constant-power power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201591170U CN202513826U (en) | 2012-04-16 | 2012-04-16 | Continuously adjustable variable-structure constant-power power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202513826U true CN202513826U (en) | 2012-10-31 |
Family
ID=47066281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201591170U Expired - Fee Related CN202513826U (en) | 2012-04-16 | 2012-04-16 | Continuously adjustable variable-structure constant-power power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202513826U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611318A (en) * | 2012-04-16 | 2012-07-25 | 唐山电动车研发与检测有限公司 | Continuous adjustable power supply with variable structure and constant power |
-
2012
- 2012-04-16 CN CN2012201591170U patent/CN202513826U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611318A (en) * | 2012-04-16 | 2012-07-25 | 唐山电动车研发与检测有限公司 | Continuous adjustable power supply with variable structure and constant power |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101895223B (en) | Double-Cuk buck-boost output parallel-type converter | |
| CN204633600U (en) | A kind of novel crisscross parallel topology structure of stepping-up/stepping-down chopper circuit | |
| CN103944397A (en) | Boost type isolated DC/DC converter and control method thereof | |
| CN102969893A (en) | High-gain boosting type direct-current converter | |
| CN100438286C (en) | Dual-tube dual-forward-excitation boosting type single-stage power factor correction circuit | |
| CN103929058A (en) | Two-phase interleaved converter based on coupled inductors | |
| CN203233322U (en) | Multiplexed output fly-back switching power supply | |
| CN107222096A (en) | Isolated CUK push-pull topologies in parallel | |
| CN105634275A (en) | Boost converter of switch inductor | |
| CN109787372A (en) | A kind of two-way non-contact power charging system and reversible wireless charging mould group | |
| CN102611318A (en) | Continuous adjustable power supply with variable structure and constant power | |
| CN104780692B (en) | A kind of single-stage is without the double Boost of bridge and Flyback integrated LED drive circuit | |
| CN103066834A (en) | Staggered parallel high-gain boost type direct current (DC) converter | |
| CN105792438A (en) | Buck type single-stage LED drive circuit of unity power factor | |
| CN205407613U (en) | Monopole high power factor recommends two circuit that are just swashing | |
| CN205490142U (en) | Switched inductor boost converter | |
| CN102684492B (en) | High power factor converter | |
| CN107395015A (en) | A kind of low ripple Sofe Switch synchronous rectification Buck converters based on coupling inductance | |
| CN204068701U (en) | A kind of non-isolation type high step-down ratio DC/DC converter | |
| CN101635510B (en) | Complex forward DC converter | |
| CN203574903U (en) | High-power factor constant current control circuit and LED lighting equipment | |
| CN102075078A (en) | Low-input voltage bridgeless staggered voltage-multiplying power factor correction device | |
| CN202178715U (en) | AC-DC power conversion chip and power conversion circuit | |
| CN104426377A (en) | Wide-input voltage flyback-type switch power supply applicable to drive of direct-current motor | |
| CN204696953U (en) | A kind of Z-source inverter being applicable to photovoltaic generation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TANGSHAN YKLE POWER-SUPPLY EQUIPMENT CO., LTD. Effective date: 20130105 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xiong Xisen Inventor after: Liu Dong Inventor after: Yang Hailiang Inventor after: Zhang Biao Inventor after: Li Peng Inventor after: Wang Haihe Inventor before: Xiong Xisen Inventor before: Zhang Biao Inventor before: Li Guohong Inventor before: Dong Ming Inventor before: Wang Peicuan Inventor before: Li Hui |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: XIONG XISEN ZHANG BIAO LI GUOHONG DONG MING WANG PEIXIN LI HUI TO: XIONG XISEN LIU DONG YANG HAILIANG ZHANG BIAO LI PENG WANG HAIHE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130105 Address after: 063200 Tangshan City Hebei Caofeidian electric automobile city Patentee after: Tangshan Electric Vehicle Research & Inspection Co., Ltd. Patentee after: Tangshan excellent Collier Power Equipment Co., Ltd. Address before: 063200 Tangshan City Hebei Caofeidian electric automobile city Patentee before: Tangshan Electric Vehicle Research & Inspection Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20140416 |