CN103151941B - A kind of counter excitation type power superposition circuit - Google Patents
A kind of counter excitation type power superposition circuit Download PDFInfo
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- CN103151941B CN103151941B CN201310100806.3A CN201310100806A CN103151941B CN 103151941 B CN103151941 B CN 103151941B CN 201310100806 A CN201310100806 A CN 201310100806A CN 103151941 B CN103151941 B CN 103151941B
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Abstract
The invention discloses a kind of counter excitation type power superposition circuit, a kind of counter excitation type power superposition circuit, comprise rectification filtering module, power superposition conversion module, secondary rectification filtering module, secondary control circuit, high-frequency switch circuit, main control circuit, demagnetization circuit, wherein, rectification filtering module and power superpose conversion module and are connected, power superposition conversion module is connected with secondary rectification filtering module, secondary rectification filtering module is connected with secondary control circuit, and secondary control circuit is connected with main control circuit; Power superposition conversion module is connected with high-frequency switch circuit, and high-frequency switch circuit is connected with main control circuit; Power superposition conversion module is connected with demagnetization circuit, and demagnetization circuit is connected with main control circuit.The present invention adopts and superposes the power of circuit of reversed excitation, makes the through-put power of whole power supply add one times, greatly reduces the stand-by power consumption of power supply.
Description
Technical field
The present invention relates to electronic technology field, particularly relate to a kind of counter excitation type power superposition circuit.
Background technology
In recent years, due to the increasingly stringent of the star-like planning requirement of international energy, for the stand-by power consumption also increasingly stringent of the high-power AC/DC power supply of external, by EPA1.1 be less than or equal to that 0.5W brings up to EPA2.0 be less than or equal to 0.3W, and have higher requirement in the annex of the star-like planning of the energy promulgated on April 6th, 2009 of European Union, for requirement strict like this, if the input voltage of power supply is 100V-240V, when AC/DC power acquisition is with PWM control type half-bridge circuit or full-bridge circuit, due to particular/special requirement and the switching loss of their feed circuits, realize such no-load power consumption and there is suitable difficulty, cannot realize and meet the new demand of the star-like planning of European Union's energy.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of counter excitation type power superposition circuit, adopts and superposes the power of circuit of reversed excitation, makes the through-put power of whole power supply add one times, greatly reduces the stand-by power consumption of power supply.
For solving the problems of the technologies described above, the present invention proposes a kind of counter excitation type power superposition circuit, comprise rectification filtering module, power superposition conversion module, secondary rectification filtering module, secondary control circuit, high-frequency switch circuit, main control circuit, demagnetization circuit, wherein, rectification filtering module and power superpose conversion module and are connected, power superposition conversion module is connected with secondary rectification filtering module, secondary rectification filtering module is connected with secondary control circuit, and secondary control circuit is connected with main control circuit; Power superposition conversion module is connected with high-frequency switch circuit, and high-frequency switch circuit is connected with main control circuit; Power superposition conversion module is connected with demagnetization circuit, and demagnetization circuit is connected with main control circuit.
Further, described power superposition conversion module comprises main transformer T1, teaser transformer T2;
End of incoming cables 1 pin of the armature winding N1 of main transformer T1 connects the negative electrode of diode D1, the anode of diode D1 is connected with leading-out terminal 2 pin of armature winding N1 by resistance R1, also comprise diode D2, the negative electrode of diode D2 connects the negative electrode of diode D1, the anode of diode D2 connects the anode of diode D1, a described resistance R1 electric capacity C1 in parallel, center tap terminal 5 pin of armature winding N1 connects demagnetization circuit, demagnetization circuit is connected with main control circuit, end of incoming cables 1 pin of armature winding N1 connects the output of rectification filtering module, leading-out terminal 3 pin of the first secondary winding N2 of main transformer T1, end of incoming cables 4 pin is connected with secondary rectification filtering module, the end of incoming cables 6 pin ground connection of the second subprime winding N3 of main transformer T1, the floating ground of leading-out terminal,
End of incoming cables 2 pin of the armature winding N1A of teaser transformer T2 is connected with end of incoming cables 1 pin of main transformer T1, the end of incoming cables 2 pin contact resistance R2 of armature winding N1A, the other end of resistance R2 connects the negative electrode of diode D3, the anode of diode D3 connects center tap terminal 5 pin of armature winding N1A, also comprise diode D4, the negative electrode of diode D4 connects the negative electrode of diode D3, and the anode of diode D4 connects the anode of diode D3, a described resistance R2 electric capacity C2 in parallel; Center tap terminal 5 pin of armature winding N1A is connected with high-frequency switch circuit, leading-out terminal 1 pin of armature winding N1A is connected with center tap terminal 5 pin of main transformer T1, end of incoming cables 3 pin of the first secondary winding N2A of teaser transformer T2 connects end of incoming cables 4 pin of the first secondary winding N2, and leading-out terminal 4 pin of the first secondary winding N2A connects leading-out terminal 3 pin of the first secondary winding N2.
Technique scheme at least has following beneficial effect: power in the present invention superposition conversion module is under the control of main control circuit and secondary control circuit, adopt and the power of circuit of reversed excitation is superposed, make the through-put power of whole power supply add one times, greatly reduce the stand-by power consumption of power supply.
Accompanying drawing explanation
Fig. 1 is the theory diagram of counter excitation type power superposition circuit of the present invention.
Fig. 2 is the circuit theory diagrams of counter excitation type power superposition circuit of the present invention.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below in conjunction with accompanying drawing, the present invention is described further.
As depicted in figs. 1 and 2, the counter excitation type power superposition circuit of the embodiment of the present invention comprises rectification filtering module 10, power superposition conversion module 20, secondary rectification filtering module 30, secondary control circuit 40, high-frequency switch circuit 50, main control circuit 60, demagnetization circuit 70, wherein, rectification filtering module 10 and power superpose conversion module 20 and are connected, power superposition conversion module 20 is connected with secondary rectification filtering module 30, secondary rectification filtering module 30 is connected with secondary control circuit 40, and secondary control circuit 40 is connected with main control circuit 60; Power superposition conversion module 20 is connected with high-frequency switch circuit 50, and high-frequency switch circuit 50 is connected with main control circuit 60; Power superposition conversion module 20 is connected with demagnetization circuit 70, and demagnetization circuit 70 is connected with main control circuit 60.
Power superposition conversion module 20 comprises main transformer T1, teaser transformer T2, wherein, end of incoming cables 1 pin of the armature winding N1 of main transformer T1 connects the negative electrode of diode D1, the anode of diode D1 is connected with leading-out terminal 2 pin of armature winding N1 by resistance R1, also comprise diode D2, the negative electrode of diode D2 connects the negative electrode of diode D1, the anode of diode D2 connects the anode of diode D1, a described resistance R1 electric capacity C1 in parallel, center tap terminal 5 pin of armature winding N1 connects demagnetization circuit 70, demagnetization circuit 70 is connected with main control circuit 60, end of incoming cables 1 pin of armature winding N1 connects the output of rectification filtering module 10, leading-out terminal 3 pin of the first secondary winding N2 of main transformer T1, end of incoming cables 4 pin is connected with secondary rectification filtering module 30, the end of incoming cables 6 pin ground connection of the second subprime winding N3 of main transformer T1, the floating ground of leading-out terminal, end of incoming cables 2 pin of the armature winding N1A of teaser transformer T2 is connected with end of incoming cables 1 pin of main transformer T1, the end of incoming cables 2 pin contact resistance R2 of armature winding N1A, the other end of resistance R2 connects the negative electrode of diode D3, the anode of diode D3 connects center tap terminal 5 pin of armature winding N1A, also comprise diode D4, the negative electrode of diode D4 connects the negative electrode of diode D3, the anode of diode D4 connects the anode of diode D3, a described resistance R2 electric capacity C2 in parallel, center tap terminal 5 pin of armature winding N1A is connected with high-frequency switch circuit 50, leading-out terminal 1 pin of armature winding N1A is connected with center tap terminal 5 pin of main transformer T1, end of incoming cables 3 pin of the first secondary winding N2A of teaser transformer T2 connects end of incoming cables 4 pin of the first secondary winding N2, leading-out terminal 4 pin of the first secondary winding N2A connects leading-out terminal 3 pin of the first secondary winding N2.
During work, from the 100VAC-240VAC alternating current of civil power input, through process and the conversion of rectification filtering module 10, form the direct voltage of 140V-340V, the access of this direct voltage is by main transformer T1, teaser transformer T2 and diode D1, diode D2, diode D3, diode D4, electric capacity C1, electric capacity C2, in the power superposition conversion module 20 that resistance R1 and resistance R2 forms, warp, diode D1, diode D2, the surge absorbing circuit produced by the leakage inductance of the armature winding N1 of transformer T1 that electric capacity C1 and resistance R1 forms, the due to voltage spikes of the armature winding N1 of main transformer T1 is absorbed, and the detection signal of electromagnetic circuit is drawn by center tap terminal 5 pin of main transformer T1, and detection signal is flowed to demagnetization circuit 70, demagnetization circuit 70 flows to main control circuit 60 after processing it, the signal that main control circuit 60 is carried according to demagnetization circuit 70, the pulsewidth of the oscillating circuit in main control circuit 60 or frequency are adjusted, and the signal after adjustment is flowed to high-frequency switch circuit 50, the high-frequency driving signal of the device for power switching foundation main control circuit 60 of high-frequency switch circuit 50 works accordingly, main transformer T1 is carried out to the storage of energy.When the switching tube of main transformer T1 is when closing, the first secondary winding N2 of main transformer T1 releases energy, at this moment secondary control circuit 40 processes the voltage and current signal that the first secondary winding N2 exports, and it is passed to main control circuit 60 by photoelectrical coupler, main control circuit 60 is according to this signal, and the operating frequency of circuit and pulsewidth are adjusted, with the voltage and current of stable output.
Through process and the conversion of rectification filtering module 10, the direct voltage forming 140V-340V is also added on teaser transformer T2 simultaneously, the spike of the armature winding N1A generation of teaser transformer T2 is by after the peak absorbing circuit absorption of electric capacity C2, resistance R2, diode D4, diode D3 composition, the magnetization signal of the 1 pin extraction of teaser transformer T2, deliver to demagnetization circuit 70 simultaneously, through demagnetization process, magnetization signal is given main control circuit 60.When the switching tube of main transformer T1 is when closing, the armature winding N1A of teaser transformer T2 releases energy, at this moment secondary control circuit 40 processes the voltage and current signal that the first secondary winding N2A exports, and it is flowed to main control circuit 60 by photoelectrical coupler, export corresponding control signal after the demagnetization signal of main control circuit 60 pairs of demagnetization circuit 70 and the control signal of secondary control circuit 40 carry out integrated treatment to go to control the power switch pipe in high-frequency switch circuit 50, its pulsewidth or frequency are adjusted accordingly, make power superpose conversion module 20 and export corresponding voltage and current.
To sum up, power superposition conversion module 20 is exactly superposed by transformer very little for two power outputs by former, and the magnetization process of transformer is monitored in real time, control, allow main transformer T1 and teaser transformer T2 be operated in electric current discontinuous mode state simultaneously, simultaneously in order to main transformer T1 and teaser transformer T2 can work simultaneously, them are allowed to share a main control circuit 60 and secondary control circuit 40, to reach the synchronous of main transformer T1 and teaser transformer T2, for the inferior position that the transfer power of circuit of reversed excitation own is little, main transformer T1 and teaser transformer T2 is reasonably controlled and superposes, its power output is strengthened, thus reach the effect that power output strengthens at double.
The above is the specific embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (1)
1. a counter excitation type power superposition circuit, it is characterized in that, comprise rectification filtering module (10), power superposition conversion module (20), secondary rectification filtering module (30), secondary control circuit (40), high-frequency switch circuit (50), main control circuit (60), demagnetization circuit (70), wherein, rectification filtering module (10) and power superpose conversion module (20) and are connected, power superposition conversion module (20) is connected with secondary rectification filtering module (30), secondary rectification filtering module (30) is connected with secondary control circuit (40), secondary control circuit (40) is connected with main control circuit (60), power superposition conversion module (20) is connected with high-frequency switch circuit (50), and high-frequency switch circuit (50) is connected with main control circuit (60), power superposition conversion module (20) is connected with demagnetization circuit (70), and demagnetization circuit (70) is connected with main control circuit (60),
Described power superposition conversion module (20) comprises main transformer T1, teaser transformer T2;
End of incoming cables 1 pin of the armature winding N1 of main transformer T1 connects the negative electrode of diode D1, the anode of diode D1 is connected with leading-out terminal 2 pin of armature winding N1 by resistance R1, also comprise diode D2, the negative electrode of diode D2 connects the negative electrode of diode D1, the anode of diode D2 connects the anode of diode D1, a described resistance R1 electric capacity C1 in parallel, center tap terminal 5 pin of armature winding N1 connects demagnetization circuit (70), demagnetization circuit (70) is connected with main control circuit (60), end of incoming cables 1 pin of armature winding N1 connects the output of rectification filtering module (10), leading-out terminal 3 pin of the first secondary winding N2 of main transformer T1, end of incoming cables 4 pin is connected with secondary rectification filtering module (30), the end of incoming cables 6 pin ground connection of the second subprime winding N3 of main transformer T1, the floating ground of leading-out terminal,
End of incoming cables 2 pin of the armature winding N1A of teaser transformer T2 is connected with end of incoming cables 1 pin of main transformer T1, the end of incoming cables 2 pin contact resistance R2 of armature winding N1A, the other end of resistance R2 connects the negative electrode of diode D3, the anode of diode D3 connects center tap terminal 5 pin of armature winding N1A, also comprise diode D4, the negative electrode of diode D4 connects the negative electrode of diode D3, and the anode of diode D4 connects the anode of diode D3, a described resistance R2 electric capacity C2 in parallel; Center tap terminal 5 pin of armature winding N1A is connected with high-frequency switch circuit (50), leading-out terminal 1 pin of armature winding N1A is connected with center tap terminal 5 pin of main transformer T1, end of incoming cables 3 pin of the first secondary winding N2A of teaser transformer T2 connects end of incoming cables 4 pin of the first secondary winding N2, and leading-out terminal 4 pin of the first secondary winding N2A connects leading-out terminal 3 pin of the first secondary winding N2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310100806.3A CN103151941B (en) | 2013-03-26 | 2013-03-26 | A kind of counter excitation type power superposition circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310100806.3A CN103151941B (en) | 2013-03-26 | 2013-03-26 | A kind of counter excitation type power superposition circuit |
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| CN103151941A CN103151941A (en) | 2013-06-12 |
| CN103151941B true CN103151941B (en) | 2015-08-19 |
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| CN201310100806.3A Expired - Fee Related CN103151941B (en) | 2013-03-26 | 2013-03-26 | A kind of counter excitation type power superposition circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104201898B (en) * | 2014-09-09 | 2017-12-22 | 嘉兴市纳杰微电子技术有限公司 | A kind of integrated DC/DC power supplys front controller, control method and control system |
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| US7746670B2 (en) * | 2006-10-04 | 2010-06-29 | Denso Corporation | Dual-transformer type of DC-to-DC converter |
| CN201490910U (en) * | 2009-09-09 | 2010-05-26 | 瑞谷科技(深圳)有限公司 | Parallel-connected clamping reverse excitation circuit |
| CN102856926B (en) * | 2012-09-12 | 2015-08-12 | 福州大学 | Based on the interleaving inverse excitation micropower combining inverter of integrated magnetics |
| CN203225665U (en) * | 2013-03-26 | 2013-10-02 | 王彤 | Fly-back power superposition circuit |
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