CN202406056U - Single-phase AC (alternating current) and DC (direct current) bidirectional converter - Google Patents
Single-phase AC (alternating current) and DC (direct current) bidirectional converter Download PDFInfo
- Publication number
- CN202406056U CN202406056U CN2012200030111U CN201220003011U CN202406056U CN 202406056 U CN202406056 U CN 202406056U CN 2012200030111 U CN2012200030111 U CN 2012200030111U CN 201220003011 U CN201220003011 U CN 201220003011U CN 202406056 U CN202406056 U CN 202406056U
- Authority
- CN
- China
- Prior art keywords
- oxide
- semiconductor
- metal
- dsp
- drain electrode
- 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
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
Abstract
The utility model discloses a single-phase AC (alternating current) and DC (direct current) bidirectional converter. The single-phase AC and DC bidirectional converter comprises a high-frequency rectifying unit, a DC-DC primary side switch unit, a secondary side rectifying unit, a transformer, a first inductor, a second inductor, an electrolytic capacitor, a drive unit, an isolation drive unit, an isolation unit and a DSP (digital signal processor. The single-phase AC and DC bidirectional converter is realized by means of the same set of main circuitd and is controlled by means of the DSP. According to the method, the high-frequency transformer is used for isolating, and a heavy work frequency transformer is not required, so that the single-phase AC and DC bidirectional converter has light total weight, small volume and a flexible system structure and can conveniently fulfill the aims of energy conservation and safety isolation. In addition, the single-phase AC and DC bidirectional converter has the advantages of low cost, high efficiency and high safety.
Description
[technical field]
The utility model relates to the power conversion technology, relates in particular to the reversible transducer of a kind of single phase alternating current (A.C.) and direct current.
[background technology]
In the production application of Novel DC voltage end; Usually need carry out to form final direct voltage end after the discharging and recharging repeatedly to the direct voltage end; Traditional method is to adopt charger to charge, and adopts the resistive load discharge, and this method has bigger consumption to the energy.For this reason, a lot of method for saving energy have appearred on the market.
Wherein a kind of method for saving energy is to charge through charger, discharges through other discharge inverter during discharge, and this method has realized energy-conservation, but system has been owing to comprised live part and discharge portion, and hardware is negative relatively assorted, and cost is higher.
Another kind of method for saving energy is after isolating through the power frequency isolating transformer, to carry out high-frequency rectification and obtain a busbar voltage, adopts a buck/boost two-way changing circuit of not isolating to output then; This method has realized that a covering device carries out two-way changing, but following shortcoming is arranged, and like the Industrial Frequency Transformer Heavy Weight, cost is high, and is big in small-power situation lower volume, problems such as cost height.
For solving the above-mentioned problem, the utility model adopts the two-way changing circuit of high-frequency isolation, charges to the direct voltage end from electrical network during charging; The direct voltage end discharges directly into electrical network during discharge, and whole process adopts same set of main circuit to realize, adopts intelligence control circuit to control; Because this method adopts high frequency transformer to realize isolating, and do not need heavy Industrial Frequency Transformer, so complete machine is in light weight; Volume is little; System constitutes flexibly, can realize energy-conservation and safe isolation easily, and this scheme has cost and higher efficient and security feature preferably.
[utility model content]
The utility model provides the reversible transducer of a kind of single phase alternating current (A.C.) and direct current, and complete machine is in light weight, volume is little, system constitutes flexibly, and cost is low.
The technical scheme of the utility model is:
The reversible transducer of a kind of single phase alternating current (A.C.) and direct current comprises high-frequency rectification unit, the former limit of DC-DC switch element, secondary rectification unit, transformer, first inductance, second inductance, electrochemical capacitor, driver element, isolation drive unit, isolated location and DSP;
One end of high-frequency rectification unit is connected through first inductance and electrical network are anodal; The other end is connected with the electrical network negative pole; And be connected with the former limit winding of transformer through the former limit of DC-DC switch element, the secondary rectification unit is connected with two secondary windings of transformer, and the tie point of two secondary windings connects the direct voltage end through second inductance; One termination direct voltage end of electrochemical capacitor, other end ground connection; One of them current detecting end of DSP is connected with electrical network respectively with the voltage detecting end; Another voltage detecting end connects the direct voltage end through isolated location; Another current detecting terminates between secondary rectification unit and the ground; First drive end of DSP is through drive unit drives high-frequency rectification unit, and second drive end is through the former limit of isolation drive unit drives DC-DC switch element, and the 3rd drive end drives the secondary rectification unit through isolated location.
The utility model adopts the two-way changing circuit of high-frequency isolation; Charge to the direct voltage end from electrical network during charging, the direct voltage end discharges directly into electrical network during discharge, and whole process adopts same set of main circuit to realize; Adopt DSP to control; Because this method adopts high frequency transformer to realize isolating, and does not need heavy Industrial Frequency Transformer, so complete machine is in light weight, volume is little, system constitutes flexibly; Can realize energy-conservation and safe isolation easily, and the utility model cost is low, efficient is higher, security feature is good.
[description of drawings]
Fig. 1 is the single phase alternating current (A.C.) of the utility model and the reversible transducer circuit theory diagrams in one embodiment of direct current.
[embodiment]
Below in conjunction with accompanying drawing the specific embodiment of the utility model is done a detailed elaboration.
The utility model adopts the two-way changing circuit of high-frequency isolation; Charge to the direct voltage end from electrical network during charging, the direct voltage end discharges directly into electrical network during discharge, and whole process adopts same set of main circuit to realize; Adopt DSP to control; Because this method adopts high frequency transformer to realize isolating, and does not need heavy Industrial Frequency Transformer, so complete machine is in light weight, volume is little, system constitutes flexibly; Can realize energy-conservation and safe isolation easily, and the utility model cost is low, efficient is higher, security feature is good.
Like Fig. 1; The single phase alternating current (A.C.) of the utility model and the reversible transducer of direct current comprise DSP, driver element, isolation drive unit, isolated location and first inductance L 6, the second inductance L 3-C, electrochemical capacitor C7, the first metal-oxide-semiconductor Q11, the second metal-oxide-semiconductor Q12, the 3rd metal-oxide-semiconductor Q13, the 4th metal-oxide-semiconductor Q14, the 5th metal-oxide-semiconductor Q15, the 6th metal-oxide-semiconductor Q16, the 7th metal-oxide-semiconductor Q17, the 8th metal-oxide-semiconductor Q18, the 9th metal-oxide-semiconductor Q19, the tenth metal-oxide-semiconductor Q20, transformer; Transformer comprises a former limit winding L 1-E and two secondary winding L 1-B, L2-A;
The drain electrode of the 7th metal-oxide-semiconductor Q17, the 8th metal-oxide-semiconductor Q18 is connected, and is connected with the drain electrode of the first metal-oxide-semiconductor Q11 and the second metal-oxide-semiconductor Q12 respectively; The source ground of the 9th metal-oxide-semiconductor Q19, the tenth metal-oxide-semiconductor Q20, the 3rd metal-oxide-semiconductor Q13, the 4th metal-oxide-semiconductor Q14; The drain electrode tie point of the source electrode of the 7th metal-oxide-semiconductor Q17 and the tenth metal-oxide-semiconductor Q20 is through the first inductance L 6 anodal L that gets access to grid; The drain electrode tie point of the source electrode of the 8th metal-oxide-semiconductor Q18 and the 9th metal-oxide-semiconductor Q19 negative pole N that gets access to grid; First drive end of DSP is connected with the grid of the 7th metal-oxide-semiconductor Q17, the 8th metal-oxide-semiconductor Q18, the 9th metal-oxide-semiconductor Q19, the tenth metal-oxide-semiconductor Q20 respectively through driver element; One of them current detecting end of DSP is connected with electrical network respectively with the voltage detecting end; Second drive end of DSP is connected with the grid of the first metal-oxide-semiconductor Q11, the second metal-oxide-semiconductor Q12, the 3rd metal-oxide-semiconductor Q13, the 4th metal-oxide-semiconductor Q14 respectively through the isolation drive unit; The drain electrode tie point of the source electrode of the first metal-oxide-semiconductor Q11 and the 3rd metal-oxide-semiconductor Q13 is connected with the end of the former limit winding L 1-E of transformer, and the drain electrode tie point of the source electrode of the second metal-oxide-semiconductor Q12 and the 4th metal-oxide-semiconductor Q14 is connected with the other end of former limit winding L 1-E;
The 3rd drive end of DSP is connected with the grid of the 5th metal-oxide-semiconductor Q15, the 6th metal-oxide-semiconductor Q16 respectively through isolated location; Another current detecting end of DSP be connected the 5th metal-oxide-semiconductor Q15 source electrode and ground tie point between, another voltage detecting end of DSP is connected with direct voltage end V2; The tie point of two secondary windings of transformer is connected with direct voltage end V2 through the second inductance L 3-C; One of them secondary winding L 2-A is connected with the drain electrode of the 5th metal-oxide-semiconductor Q15; The source ground of the 5th metal-oxide-semiconductor Q15, the 6th metal-oxide-semiconductor Q16; The drain electrode of the 6th metal-oxide-semiconductor Q16 is connected with another secondary winding L 1-B, and the positive pole of electrochemical capacitor C7 connects direct voltage end V2, minus earth.
Wherein, The first metal-oxide-semiconductor Q11, the second metal-oxide-semiconductor Q12, the 3rd metal-oxide-semiconductor Q13, the 4th metal-oxide-semiconductor Q14 form the former limit of DC-DC rectification unit; The 5th metal-oxide-semiconductor Q15, the 6th metal-oxide-semiconductor Q16 form the secondary rectification unit, and the 7th metal-oxide-semiconductor Q17, the 8th metal-oxide-semiconductor Q18, the 9th metal-oxide-semiconductor Q19, the tenth metal-oxide-semiconductor Q20 form the high-frequency rectification unit.
In addition, also be respectively equipped with the first body diode D1, the second body diode D2, the 3rd body diode D3, limbs diode D4, five body constituents diode D5, hexasomic diode D6, the 7th body diode D7, the 8th diode D8, the 9th diode D9, the tenth diode D10 in the first metal-oxide-semiconductor Q11, the second metal-oxide-semiconductor Q12, the 3rd metal-oxide-semiconductor Q13, the 4th metal-oxide-semiconductor Q14, the 5th metal-oxide-semiconductor Q15, the 6th metal-oxide-semiconductor Q16, the 7th metal-oxide-semiconductor Q17, the 8th metal-oxide-semiconductor Q18, the 9th metal-oxide-semiconductor Q19, the tenth metal-oxide-semiconductor Q20; When carrying out synchronous rectification, can utilize respectively with the inner body diode of metal-oxide-semiconductor and carry out work, this moment, no longer the driven MOS plumber did.
During practical implementation; Said isolated location and isolation drive unit adopt electrical isolation, and like the isolated location employing linear optical coupling of sample circuit, the isolation drive unit adopts high speed photo coupling or special-purpose isolation drive chip to isolate; As with the employing IR2113 of DSP homonymy, secondary adopts HCPL205.
The reversible transducer of the utility model is made up of two parts in fact, and the one, the high-frequency rectification part; The 2nd, the bidirectional, dc conversion fraction of isolating; High-frequency rectification is partly realized the not isolated variable of AC-to DC, and its essence is an inverter circuit, through the Based Intelligent Control of DSP; Can realize the High Power Factor imported; Realize two-way changing simultaneously, when DC bus-bar voltage was lower than setting voltage, energy flowed to dc bus from AC portion; When DC bus-bar voltage was higher than setting voltage, energy flowed to AC portion from dc bus.
The bidirectional, dc conversion fraction of isolating is realized the conversion of dc bus to the output direct current; But output has under the situation that load absorbs energy; Energy flows to the output direct current from dc bus, and when external energy flowed to the output dc bus, the Based Intelligent Control through DSP can realize that energy flows to dc bus from the output direct current; Then through the control of high-frequency rectification, flow to the AC network part from dc bus.
Shown in Figure 1 is a two-way isolated converter of 1kw in fact, realizes the two-way changing from single phase alternating current (A.C.) 220V to direct current 12V.Metal-oxide-semiconductor Q17, Q18, Q19, Q20 are the high-frequency rectification main circuit among the figure; Metal-oxide-semiconductor Q11, Q12, Q13, Q14 are the former limit switching tube of two-way isolation DC part, and metal-oxide-semiconductor Q15, Q16 are that two-way isolation secondary part synchronous rectification switch pipe (output energy) or secondary are recommended the switching tube that boosts.
Rectification of circuit medium-high frequency and two-way isolation DC adopt a DSP control.Wherein DSP accomplishes high-frequency rectification control, detects alternating voltage, electric current and DC bus-bar voltage, carries out high-frequency rectification algorithm and control, exports control simultaneously, and output voltage and output current detect through isolating the back; The whole control is realized that by DSP DSP detects the electric current and voltage of output, confirms the direction of energy Flow and adopts the corresponding driving control strategy, realizes energy direction FLOW CONTROL on demand.
In the foregoing description, the metal-oxide-semiconductor in the former limit of DC-DC rectification unit, the high-frequency rectification unit can adopt other switching device such as IGBT equally, to satisfy the actual needs that use.
Above-described embodiment of the present invention does not constitute the qualification to protection range of the present invention.Any modification of within spirit of the present invention and principle, being done, be equal to replacement and improvement etc., all should be included within the claim protection range of the present invention.
Claims (3)
1. the reversible transducer of single phase alternating current (A.C.) and direct current is characterized in that: comprise high-frequency rectification unit, the former limit of DC-DC switch element, secondary rectification unit, transformer, first inductance, second inductance, electrochemical capacitor, driver element, isolation drive unit, isolated location and DSP;
One end of high-frequency rectification unit is connected through first inductance and electrical network are anodal; The other end is connected with the electrical network negative pole; And be connected with the former limit winding of transformer through the former limit of DC-DC switch element, the secondary rectification unit is connected with two secondary windings of transformer, and the tie point of two secondary windings connects the direct voltage end through second inductance; One termination direct voltage end of electrochemical capacitor, other end ground connection; One of them current detecting end of DSP is connected with electrical network respectively with the voltage detecting end; Another voltage detecting end connects the direct voltage end through isolated location; Another current detecting terminates between secondary rectification unit and the ground; First drive end of DSP is through drive unit drives high-frequency rectification unit, and second drive end is through the former limit of isolation drive unit drives DC-DC switch element, and the 3rd drive end drives the secondary rectification unit through isolated location.
2. the reversible transducer of single phase alternating current (A.C.) according to claim 1 and direct current; It is characterized in that: the former limit of said DC-DC switch element comprises first metal-oxide-semiconductor, second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor, the 4th metal-oxide-semiconductor; Said secondary rectification unit comprises the 5th metal-oxide-semiconductor, the 6th metal-oxide-semiconductor, and said high-frequency rectification unit comprises the 7th metal-oxide-semiconductor, the 8th metal-oxide-semiconductor, the 9th metal-oxide-semiconductor, the tenth metal-oxide-semiconductor;
The drain electrode of the 7th metal-oxide-semiconductor, the 8th metal-oxide-semiconductor is connected, and is connected with the drain electrode of first metal-oxide-semiconductor with second metal-oxide-semiconductor respectively; The source ground of the 9th metal-oxide-semiconductor, the tenth metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor, the 4th metal-oxide-semiconductor; The drain electrode tie point of the source electrode of the 7th metal-oxide-semiconductor and the tenth metal-oxide-semiconductor is through first inductance positive pole that gets access to grid; The drain electrode tie point of the source electrode of the 8th metal-oxide-semiconductor and the 9th metal-oxide-semiconductor negative pole that gets access to grid; First drive end of DSP is connected with the grid of the 7th metal-oxide-semiconductor, the 8th metal-oxide-semiconductor, the 9th metal-oxide-semiconductor, the tenth metal-oxide-semiconductor respectively through driver element; Second drive end of DSP is connected with the grid of first metal-oxide-semiconductor, second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor, the 4th metal-oxide-semiconductor respectively through the isolation drive unit; The drain electrode tie point of the source electrode of first metal-oxide-semiconductor and the 3rd metal-oxide-semiconductor is connected with an end of the former limit winding of transformer, and the drain electrode tie point of the source electrode of second metal-oxide-semiconductor and the 4th metal-oxide-semiconductor is connected with the other end of former limit winding;
The 3rd drive end of DSP is connected with the grid of the 5th metal-oxide-semiconductor, the 6th metal-oxide-semiconductor respectively through isolated location; Another current detecting end of DSP be connected the 5th metal-oxide-semiconductor source electrode and ground tie point between; One of them secondary winding is connected with the drain electrode of the 5th metal-oxide-semiconductor; The source ground of the 5th metal-oxide-semiconductor, the 6th metal-oxide-semiconductor, the drain electrode of the 6th metal-oxide-semiconductor is connected with another secondary winding.
3. the reversible transducer of single phase alternating current (A.C.) according to claim 1 and 2 and direct current is characterized in that: said isolated location and isolation drive unit adopt electrical isolation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200030111U CN202406056U (en) | 2012-01-05 | 2012-01-05 | Single-phase AC (alternating current) and DC (direct current) bidirectional converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200030111U CN202406056U (en) | 2012-01-05 | 2012-01-05 | Single-phase AC (alternating current) and DC (direct current) bidirectional converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202406056U true CN202406056U (en) | 2012-08-29 |
Family
ID=46703670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200030111U Expired - Fee Related CN202406056U (en) | 2012-01-05 | 2012-01-05 | Single-phase AC (alternating current) and DC (direct current) bidirectional converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202406056U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI474600B (en) * | 2012-12-28 | 2015-02-21 | Univ Far East | Single - phase AC - DC power conversion device |
| CN111610387A (en) * | 2020-03-26 | 2020-09-01 | 深圳市鑫翊新能源科技有限公司 | Electronic load device and electronic load circuit |
-
2012
- 2012-01-05 CN CN2012200030111U patent/CN202406056U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI474600B (en) * | 2012-12-28 | 2015-02-21 | Univ Far East | Single - phase AC - DC power conversion device |
| CN111610387A (en) * | 2020-03-26 | 2020-09-01 | 深圳市鑫翊新能源科技有限公司 | Electronic load device and electronic load circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107650729B (en) | The pre-charging device of the High-Voltage Electrical Appliances of new-energy automobile | |
| CN208452807U (en) | A kind of charge-discharge circuit of integrated bi-directional OBC and two-way DC/DC converter | |
| CN111342676A (en) | DCDC conversion circuit capable of pre-charging | |
| CN203774850U (en) | Multifunctional integrated electric vehicle-mounted charger with mode switch function | |
| CN108032740A (en) | A kind of energy storage type electric automobile charging pile system | |
| CN208723603U (en) | A kind of four-way conversion Vehicular charger | |
| CN103887981A (en) | Full-bridge DC-DC converter | |
| CN106685039A (en) | Charge-discharge apparatus and control method therefor | |
| CN109950943A (en) | A kind of four-way conversion Vehicular charger and control method | |
| CN202085084U (en) | Current source conversion module | |
| CN102570831B (en) | Isolated direct current (DC) bidirectional converter | |
| CN206697991U (en) | A kind of novel electric vehicle charging system | |
| CN104201761A (en) | Power supply system integrating photovoltaic power system and communication power supply | |
| CN202406056U (en) | Single-phase AC (alternating current) and DC (direct current) bidirectional converter | |
| CN202406057U (en) | Three-phase alternating current and direct-current bidirectional transducer | |
| CN109327136A (en) | Three-level boost type direct current conversion topology based on coupling winding unit | |
| CN202856422U (en) | Bidirectional electrical energy transfer circuit | |
| CN102904317A (en) | Bidirectional electric energy transfer circuit | |
| CN204290428U (en) | A kind of integrate motor drives and battery charging function module | |
| CN202679054U (en) | A dual power supply system used for three-phase rectification | |
| CN203504406U (en) | Bidirectional direct/alternating voltage conversion device | |
| CN206850503U (en) | A kind of efficient wireless charging device of low-voltage and high-current for AGV | |
| CN201947182U (en) | Bi-directional DC/DC (direct current to direct current) power supply | |
| CN206226093U (en) | Online double conversion ups systems | |
| CN108933470A (en) | A kind of charging pile system of solar energy mains hybrid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20200105 |