CN202395678U - Full-bridge resonant soft switching device - Google Patents
Full-bridge resonant soft switching device Download PDFInfo
- Publication number
- CN202395678U CN202395678U CN2011205074662U CN201120507466U CN202395678U CN 202395678 U CN202395678 U CN 202395678U CN 2011205074662 U CN2011205074662 U CN 2011205074662U CN 201120507466 U CN201120507466 U CN 201120507466U CN 202395678 U CN202395678 U CN 202395678U
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- transformer
- bridge resonant
- capacitor
- auxiliary
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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 utility model discloses a full-bridge resonant soft switching device, which comprises an advance arm, a lag arm, a capacitor in parallel connection with the advance arm and a capacitor in parallel connection with the lag arm, wherein all electronic components constitute a full-bridge resonant circuit; in the resonant circuit, a primary stage of an auxiliary transformer T2 is connected in parallel to a primary stage or a secondary stage or a secondary-stage auxiliary winding of a main transformer T1 by means of the primary connection among a capacitor C5, a saturated inductor Ls and the main transformer T1 as well as the secondary output of the main transformer T1, and the secondary stage of the auxiliary transformer T2 is externally connected with a rectifying circuit D1 and is further connected with a load. The full-bridge resonant soft switching device disclosed by the utility model is reasonable in structure, the power consumption of the circuit of the auxiliary transformer is low in a power conversion process of an inverter and particularly under a light load or no-load state, so that ring current introduced into the full-bridge resonant circuit can be regulated and particularly can be compensated automatically according to the magnitude of input power voltage, and thus, the purpose of facilitating the stable work of a system is achieved.
Description
Technical field
The utility model relates to the welding machine that is used to weld in a kind of industry, the adjustable auxiliary transformer circuit of circulation of soft switch when realization zero load that particularly a kind of inverter type welder is used and underloading.
Background technology
At present; The inverter arc welding soft switching power adopts the full-bridge phase-shifting resonance circuit more; But, when load is in underloading or Light Condition, can lose the switch condition of zero-voltage zero-current because the soft switch condition of lagging leg receives the influence of load variations; Increase switching loss, limited the soft switch working range of phase-shifting resonance circuit.For solving the switch problem of inverter at underloading or the zero-voltage zero-current when unloaded; Traditional technical method is: at blocking capacitor device of elementary series connection and pulsactor of high frequency transformer; Elementary or secondary parallelly connected change of current inductance at transformer; Or install the method for secondary auxiliary winding and change of current inductance additional at transformer secondary output, and in resonant circuit, introduce a constant exciting curent, realize the switch condition of zero-voltage zero-current.
But, parallelly connected change of current inductance, the power consumption when inverter is in underloading or Light Condition is very big, the value of the exciting curent of the resonant circuit of introducing changes along with the size of input voltage, and is difficult for adjustment, is unfavorable for the steady operation of inverter.
The utility model content
It is a kind of rational in infrastructure that the purpose of the utility model is to provide, and realizes the adjustable full-bridge resonant type soft-switch device of circulation of soft switch when underloading and zero load.
The technical solution of the utility model is:
A kind of full-bridge resonant type soft-switch device; It is characterized in that: comprise the leading arm that constitutes by transistor Q1, Q2; The lagging leg that constitutes by transistor Q3, Q4; The leading arm shunt capacitance that capacitor C 3, C4 constitute, capacitor C 3, C4 constitute the lagging leg shunt capacitance, constitute the full-bridge resonant circuit by above-mentioned electronic component; Said resonant circuit is connected with the elementary of main transformer T1 through capacitor C 5, pulsactor Ls; Secondary output through main transformer T1; On the elementary secondary or secondary auxiliary winding of main transformer T1, be parallel with the elementary of auxiliary transformer T2; The secondary external rectification circuit D1 of auxiliary transformer T2, and connect load.
Said auxiliary transformer T2 secondary is an independent winding or is made up of two windings in series.
Said load is connected to the direct current supply input and the adjustable resistance R1 of inverter.
The utility model is rational in infrastructure; In the power conversion process of inverter; Particularly under underloading or the Light Condition, the power consumption of auxiliary transformer circuit is little, can adjust the circulation of introducing resonant circuit; Particularly can circulation be compensated automatically, reach the purpose of the steady operation that helps system according to the size of input supply voltage.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Fig. 1 be the utility model embodiment 1 circuit diagram.
Fig. 2 is the circuit diagram of embodiment 2.
Fig. 3 is the circuit diagram of embodiment 3.
Fig. 4 is the partial circuit diagram of embodiment 4.
Embodiment
Embodiment 1:
A kind of full-bridge resonant type soft-switch device; Comprise the leading arm that constitutes by transistor Q1, Q2, by the lagging leg that transistor Q3, Q4 constitute, the leading arm shunt capacitance that capacitor C 3, C4 constitute; Capacitor C 3, C4 constitute the lagging leg shunt capacitance, constitute the full-bridge resonant circuit by above-mentioned electronic component; Said resonant circuit is connected with the elementary of main transformer T1 through capacitor C 5, pulsactor Ls; Secondary output through main transformer T1; On main transformer T1 elementary, be parallel with the elementary of auxiliary transformer T2, the secondary external rectification circuit D1 of auxiliary transformer T2, and connect load.
The secondary of said auxiliary transformer T2 is an independent winding.
Said load is connected to the direct current supply input and the adjustable resistance R1 of inverter.
Embodiment 2:
Auxiliary transformer T2 elementary is connected in parallel on main transformer T1 secondary, and all the other are with embodiment 1.
Embodiment 3:
Auxiliary transformer T2 elementary is connected in parallel on the secondary auxiliary winding of main transformer T1, and all the other are with embodiment 1.
Embodiment 4:
The secondary of auxiliary transformer T2 is made up of two windings in series.All the other are basically with embodiment 1.
Claims (3)
1. full-bridge resonant type soft-switch device; It is characterized in that: comprise the leading arm that constitutes by transistor Q1, Q2; The lagging leg that constitutes by transistor Q3, Q4; The leading arm shunt capacitance that capacitor C 3, C4 constitute, capacitor C 3, C4 constitute the lagging leg shunt capacitance, constitute the full-bridge resonant circuit by above-mentioned electronic component; Said resonant circuit is connected with the elementary of main transformer T1 through capacitor C 5, pulsactor Ls; Secondary output through main transformer T1; On the elementary secondary or secondary auxiliary winding of main transformer T1, be parallel with the elementary of auxiliary transformer T2; The secondary external rectification circuit D1 of auxiliary transformer T2, and connect load.
2. full-bridge resonant type soft-switch device according to claim 1 is characterized in that: said auxiliary transformer T2 secondary is an independent winding or is made up of two windings in series.
3. full-bridge resonant type soft-switch device according to claim 1 and 2 is characterized in that: said load is connected to the direct current supply input and the adjustable resistance R1 of inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205074662U CN202395678U (en) | 2011-12-08 | 2011-12-08 | Full-bridge resonant soft switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205074662U CN202395678U (en) | 2011-12-08 | 2011-12-08 | Full-bridge resonant soft switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202395678U true CN202395678U (en) | 2012-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205074662U Withdrawn - After Issue CN202395678U (en) | 2011-12-08 | 2011-12-08 | Full-bridge resonant soft switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202395678U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412752A (en) * | 2011-12-08 | 2012-04-11 | 南通三九焊接机器制造有限公司 | Full-bridge resonant soft switching device |
| CN108462397A (en) * | 2018-04-12 | 2018-08-28 | 浙江大学 | A kind of three road output DC-DC converter of hybrid modulation isolated form |
-
2011
- 2011-12-08 CN CN2011205074662U patent/CN202395678U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412752A (en) * | 2011-12-08 | 2012-04-11 | 南通三九焊接机器制造有限公司 | Full-bridge resonant soft switching device |
| CN102412752B (en) * | 2011-12-08 | 2013-03-27 | 南通三九焊接机器制造有限公司 | Full-bridge resonant soft switching device |
| CN108462397A (en) * | 2018-04-12 | 2018-08-28 | 浙江大学 | A kind of three road output DC-DC converter of hybrid modulation isolated form |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120822 Effective date of abandoning: 20130327 |
|
| RGAV | Abandon patent right to avoid regrant |