CN102437719A - Rectifying and filtering circuit of wireless electric power transmission system - Google Patents
Rectifying and filtering circuit of wireless electric power transmission system Download PDFInfo
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- CN102437719A CN102437719A CN2011104430518A CN201110443051A CN102437719A CN 102437719 A CN102437719 A CN 102437719A CN 2011104430518 A CN2011104430518 A CN 2011104430518A CN 201110443051 A CN201110443051 A CN 201110443051A CN 102437719 A CN102437719 A CN 102437719A
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- diode
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- rectifying
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The invention discloses a rectifying and filtering circuit of a wireless electric power transmission system, belonging to the field of wireless electric power transmission. The rectifying and filtering circuit comprises a diode rectifying circuit and a filtering circuit, wherein the middle point of a bridge arm of the diode rectifying circuit is connected with an alternating current power supply; an output end of the diode rectifying circuit is connected with an input end of the filtering circuit; and an output end of the filtering circuit is connected with a load. The diode rectifying circuit comprises C2D10120A silicon carbide diodes and head radiation sheets; each C2D10120A silicon carbide diode is equipped with the heat radiation sheet. According to the invention, with the adoption of the C2D10120A silicon carbide diodes, the loss of the rectifying circuit is greatly reduced and a direct current obtained by rectification is flattened through a large inductor and a large capacitor, so that the smoother direct current is finally obtained.
Description
Technical field
The present invention relates to a kind of current rectifying and wave filtering circuit of radio energy transmission system, belong to the wireless power transmission technical field.
Background technology
So-called wireless power transmission is carried out a kind of technology of NE BY ENERGY TRANSFER exactly by means of electromagnetic field or electromagnetic wave.Wireless transmission of electricity is divided into: induction, electromagentic resonance formula and electromagnetic radiation formula.In recent years, mobile devices such as some portable electronics such as notebook electricity, mobile phone, music player all need battery and charging.Power cable plugs continually, and is both dangerous, also easy abrasion.Can be well solved through wireless power transmission technology the problems referred to above.But the wireless power transmission systems secondary side receives it is alternating current, wants the electric energy that receives is applied in the middle of the reality, must carry out rectification to it.
Want to carry out rectification to it to the alternating current utilization that the primary side of radio energy transmission system receives.But the electromagentic resonance formula mode electric energy transmitting that the novel radio electric energy transmission system that the present invention is directed to adopts.Because this electric energy transmitting mode will reach resonance, the alternating current that needs to be transmitted has higher frequency.So will carry out rectification to the high-frequency alternating current that obtains at last.And conventional diode rectification operating frequency is lower, and loss is bigger, can not meet the demands.
Summary of the invention
Technical problem to be solved by this invention is the deficiency to the above-mentioned background technology, and a kind of current rectifying and wave filtering circuit of radio energy transmission system is provided.
The present invention adopts following technical scheme for realizing the foregoing invention purpose:
A kind of current rectifying and wave filtering circuit of radio energy transmission system comprises: diode rectifier circuit and filter circuit; Wherein, the brachium pontis mid point of diode rectifier circuit is connected with AC power, and the output of diode rectifier circuit is connected with the input of filter circuit, and the output of filter circuit is connected with load;
On each diode in the said diode rectifier circuit fin is installed all;
Said filter circuit comprises filter inductance and the filter capacitor that is connected in series.
In the current rectifying and wave filtering circuit of said radio energy transmission system, in the said diode rectifier circuit: diode is the C2D10120 silicon carbide diode, scribbles heat-conducting silicone grease between C2D10120 silicon carbide diode and the fin.
In the current rectifying and wave filtering circuit of said radio energy transmission system, in the said filter circuit: filter inductance is the annular ferrite core of the big magnetic permeability that is wrapped in of enamelled wire.
The present invention adopts technique scheme, has following beneficial effect:
The C2D10120A silicon carbide diode greatly reduces the loss of rectification circuit, puts down ripple through the direct current that big inductance and big electric capacity obtain after to rectification, obtains more level and smooth direct current at last.
Description of drawings
Fig. 1 is the sketch map of radio energy transmission system current rectifying and wave filtering circuit.Label declaration among the figure: AC is an alternating-current voltage source, VD
1-VD
4Be first to fourth diode, L is a filter inductance, and C is a filter capacitor, and R is load.
Embodiment
Be elaborated below in conjunction with the technical scheme of accompanying drawing to invention:
Radio energy transmission system current rectifying and wave filtering circuit as shown in Figure 1 comprises diode rectifier circuit and filter circuit.The brachium pontis mid point of diode rectifier circuit is connected with AC power AC, and the output of diode rectifier circuit is connected with the input of filter circuit, and the output of filter circuit is connected with load R.
Diode rectifier circuit is an individual event full-bridge diode rectifier circuit, comprises first to fourth diode VD
1-VD
4, the second diode VD
2With the first diode VD
1Series connection, the 4th diode VD
4With the 3rd diode VD
3Series connection, the first diode VD
1Negative electrode and the 3rd diode VD
3Negative electrode connect the second diode VD
2Anode and the 4th diode VD
4Anode connect.
Filter circuit comprises filter inductance L and the filter capacitor C that is connected in series.Direct current I through exporting behind the filter capacitor C is load R power supply.Filter inductance L according to formula
Select, wherein: k is determined by 2R/I, because 2R/I is very little, so k gets 1; μ
0Be the magnetic permeability in the vacuum; μ
sBe relative permeability; N is the number of turn of coil; S is that the core section of filter inductance L is long-pending.Adopting relative permeability is about 3000 ferrite during as magnetic core, N=50, S=1.5 * 10
-4m
2, l=5m.Obtain the big or small requirement of satisfying rectification for the inductance about 0.28mH.Filter capacitor C adopts 450V, and the electrochemical capacitor of 1000 μ F, this electric capacity can play well flat ripple effect.
Diode has adopted the C2D10120A silicon carbide diode, and the repetitive peak reverse voltage of C2D10120A silicon carbide diode is 1200V, Mean Forward Current 10A, and be 0 reverse recovery time.Because operating frequency is higher; Inevitably can produce switching loss; In order to make the circuit safety reliable work; Finned on the C2D10120A silicon carbide diode, full-filling heat-conducting silicone grease between C2D10120A silicon carbide diode and fin, the heat dispersion of raising C2D10120A silicon carbide diode.The diode rectifier circuit that the C2D10120A silicon carbide diode is formed has reduced the loss of rectification circuit, and filter circuit adopts the inductance of big parameter value and the ripple of electric capacity elimination rectification circuit output DC, reaches the purpose of level and smooth output DC.
Claims (3)
1. the current rectifying and wave filtering circuit of a radio energy transmission system is characterized in that comprising diode rectifier circuit and filter circuit; Wherein, the brachium pontis mid point of diode rectifier circuit is connected with AC power, and the output of diode rectifier circuit is connected with the input of filter circuit, and the output of filter circuit is connected with load;
On each diode in the said diode rectifier circuit fin is installed all;
Said filter circuit comprises filter inductance and the filter capacitor that is connected in series.
2. the current rectifying and wave filtering circuit of radio energy transmission system according to claim 1; It is characterized in that in the said diode rectifier circuit: diode is the C2D10120 silicon carbide diode, scribbles heat-conducting silicone grease between C2D10120 silicon carbide diode and the fin.
3. according to the current rectifying and wave filtering circuit of claim 1 described radio energy transmission system, it is characterized in that in the said filter circuit: filter inductance is the annular ferrite core of the big magnetic permeability that is wrapped in of enamelled wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104430518A CN102437719A (en) | 2011-12-27 | 2011-12-27 | Rectifying and filtering circuit of wireless electric power transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104430518A CN102437719A (en) | 2011-12-27 | 2011-12-27 | Rectifying and filtering circuit of wireless electric power transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102437719A true CN102437719A (en) | 2012-05-02 |
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ID=45985632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104430518A Pending CN102437719A (en) | 2011-12-27 | 2011-12-27 | Rectifying and filtering circuit of wireless electric power transmission system |
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| CN (1) | CN102437719A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108964483A (en) * | 2018-06-01 | 2018-12-07 | 上海交通大学 | Wireless power transmission and distribution power generation buck-boost type compound circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010177100A (en) * | 2009-01-30 | 2010-08-12 | Sharp Corp | Power supply device for high-frequency heating arrangement |
| CN102280988A (en) * | 2011-08-25 | 2011-12-14 | 华南理工大学 | Electrochemical high-frequency switch power supply output rectifier with air-cooling heat dissipation system |
| CN202084541U (en) * | 2011-05-09 | 2011-12-21 | 郑元强 | Rectifying component of electric welding machine |
| CN202384989U (en) * | 2011-12-27 | 2012-08-15 | 东南大学 | Rectifying and filtering circuit of wireless power transmission system |
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2011
- 2011-12-27 CN CN2011104430518A patent/CN102437719A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010177100A (en) * | 2009-01-30 | 2010-08-12 | Sharp Corp | Power supply device for high-frequency heating arrangement |
| CN202084541U (en) * | 2011-05-09 | 2011-12-21 | 郑元强 | Rectifying component of electric welding machine |
| CN102280988A (en) * | 2011-08-25 | 2011-12-14 | 华南理工大学 | Electrochemical high-frequency switch power supply output rectifier with air-cooling heat dissipation system |
| CN202384989U (en) * | 2011-12-27 | 2012-08-15 | 东南大学 | Rectifying and filtering circuit of wireless power transmission system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108964483A (en) * | 2018-06-01 | 2018-12-07 | 上海交通大学 | Wireless power transmission and distribution power generation buck-boost type compound circuit |
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Application publication date: 20120502 |