CN204089605U - Diode-type magnetic bias for full-control type converter suppresses and energy feedback device - Google Patents
Diode-type magnetic bias for full-control type converter suppresses and energy feedback device Download PDFInfo
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- CN204089605U CN204089605U CN201420498776.6U CN201420498776U CN204089605U CN 204089605 U CN204089605 U CN 204089605U CN 201420498776 U CN201420498776 U CN 201420498776U CN 204089605 U CN204089605 U CN 204089605U
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Abstract
The utility model discloses a kind of diode-type magnetic bias for full-control type converter to suppress and energy feedback device, comprise isolating transformer T1, diode circuit and output port three parts; Described isolating transformer T1 adopts positive activation type circuit connecting mode, and it comprises a winding N1 and secondary winding N2 of major loop, and auxiliary winding N3 and auxiliary winding N4; Described diode circuit comprises again two branch roads in parallel, and described output port comprises again G end and H end, and G end wherein connects in the input power positive polarity of DC-isolation full-control type converter, and H end connects in its negative polarity.The utility model simplicity of design, rational in infrastructure, build convenient, versatility is good, not only overcome existing DC-isolation full-control type converter and use the central deficiency that magnetic bias is suppressed, effectively realize isolating transformer iron core positive direction and reciprocal two-way anti-magnetic bias, and the feedback of magnetic bias energy can also be realized.
Description
Technical field
The utility model relates to a kind of magnetic bias and suppresses and energy feedback device, more particularly, relates to a kind of diode-type magnetic bias for full-control type converter and suppresses and energy feedback device.
Background technology
In the middle of full-control type converter applications, DC-isolation translation circuit structure is widely used in field of power supplies, the power supply energy of its input side and outlet side, when converting, just because of have employed transformer to realize signal isolation and energy transferring, more or less can produce bias phenomenon.Have the existence of magnetic bias, particularly when the switching frequency worked or modulating frequency are in audibility range, the machinery noise of its transformer can increase.In addition, the consequence ignoring magnetic bias is very serious, and the power consumption of transformer and full-control type converter module gently then can be made to increase, and temperature rise aggravates, and also can damage power device, make converter cisco unity malfunction time serious.Therefore, anti-magnetic bias is one of key issue of DC-isolation full-control type inverter power supply application.
Current, in DC-isolation forward converter circuit structure, the anti-bias magnetic method of employing is more, but has limitation, and main manifestations is:
(1) method the most generally adopted is in DC-isolation forward converter circuit structure, arranges the clamper loop of clamper winding and fast diode composition to realize effective anti-magnetic bias.But this technical scheme cannot realize isolating transformer iron core positive direction and reciprocal two-way anti-magnetic bias, only can realize the anti-magnetic bias of isolating transformer iron core positive direction..
(2) lower for frequency, lower-powered converter, because the resistance of Transformer Winding is higher, self-balancing ability is comparatively strong, can adopt increase core section, or makes the certain air gap of reservation unshakable in one's determination, and suitably add the capacity of high power device, make the harm of magnetic bias be inhibited or alleviate.But for high-power high-frequency converter, above-described measure, not only uneconomical economically, and be difficult to prove effective.
(3) in, powerful converter often adopts transformer isolation type half-bridge or full-bridge circuit structure, and the method suppressing magnetic bias is all sealed in capacitor in transformer primary circuit.When it runs, the capacitor sealing in major loop, by whole high-frequency currents, causes that condenser capacity is large, volume weight is large, temperature rise, and long-time running reliability is poor, is difficult to realize real high powe design.
(4) circuit such as corresponding transducer, sampling holder, adder, PID adjuster are set in transformer major loop to form pulse duration trimming circuit, its objective is and the hunting range of transformer flux density is remained within the scope of origin symmetry, thus desirable higher magnetic close value during Design of Transformer, thus reduce the volume and weight of transformer, can realize need not sealing in capacitor in transformer primary circuit.But this method circuit is complicated, and cost of manufacture is higher, and versatility is poor.
Summary of the invention
In view of this, the utility model object is to provide a kind of diode-type magnetic bias for full-control type converter to suppress and energy feedback device, this apparatus design is simple, rational in infrastructure, structure is convenient, versatility is good, not only effectively can overcome existing DC-isolation full-control type converter and use the central deficiency that magnetic bias is suppressed, effectively realize isolating transformer iron core positive direction and reciprocal two-way anti-magnetic bias, and the feedback of magnetic bias energy can also be realized.
In order to realize above-mentioned utility model object, the utility model provides a kind of diode-type magnetic bias for full-control type converter to be suppressed, with the technic relization scheme of energy feedback device, to comprise isolating transformer T1, diode circuit and output port three parts;
Described isolating transformer T1 adopts positive activation type circuit connecting mode, and it comprises a winding N1 and secondary winding N2 of major loop, and auxiliary winding N3 and auxiliary winding N4;
Described diode circuit comprises again two branch roads in parallel, article one, branch road is composed in series after being connected with described auxiliary winding N3 by the negative electrode of diode D1, another branch road is composed in series after being connected with described auxiliary winding N4 by the negative electrode of diode D2, further, consequent two parallel branch public ports have two, one of them to be connected with the anode of diode D2 by diode D1 and to form, and another is, being connected with the different name end of auxiliary winding N4 by described auxiliary winding N3 forms;
Described output port comprises again G end and H end, the public port that auxiliary winding N3 described in G end wherein connects is connected with the different name end of auxiliary winding N4 and forms, it externally exports and is connected in the input power positive polarity of DC-isolation full-control type converter, and H end connects described diode D1 and to be connected with the anode of diode D2 public port form, its external output is connected in the input power negative polarity of DC-isolation full-control type converter;
Preferably, can adopt general-purpose diode or fast diode in described diode circuit, wherein general-purpose diode is used in the lower power circuit of switching frequency, and fast diode applies to the higher power circuit of switching frequency.
The beneficial effects of the utility model are, a kind of diode-type magnetic bias for full-control type converter is provided to suppress and energy feedback device, the technical program simplicity of design, rational in infrastructure, build convenient, versatility is good, not only overcome existing DC-isolation full-control type converter and use the central deficiency that magnetic bias is suppressed, effectively realize isolating transformer iron core positive direction and reciprocal two-way anti-magnetic bias, and the feedback of magnetic bias energy can also be realized.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme, be briefly described to the required accompanying drawing used in embodiment or technical scheme description below, apparently, accompanying drawing in the following describes is only comparatively exemplary embodiments of the present utility model or structure composition, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is that a kind of diode-type magnetic bias for full-control type converter of the utility model suppresses the composition schematic diagram with energy feedback device.
Fig. 2 is that a kind of diode-type magnetic bias for full-control type converter of the utility model suppresses the schematic diagram with the basic application scheme of energy feedback device.
Fig. 3 is that a kind of diode-type magnetic bias for full-control type converter of the utility model suppresses the schematic diagram with energy feedback device specific embodiment.
Embodiment
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, the utility model technology composition, technical scheme and embodiment are clearly and completely described, obviously, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making other embodiments all obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Now with embodiment, the utility model is further illustrated by reference to the accompanying drawings.
As shown in Figure 1, be that a kind of diode-type magnetic bias for full-control type converter of the utility model suppresses, with the composition schematic diagram of energy feedback device, to it is characterized in that:
Comprise: isolating transformer T1, diode circuit and output port three parts;
Isolating transformer T1 adopts positive activation type circuit connecting mode, and it comprises a winding N1 and secondary winding N2 of major loop, and auxiliary winding N3 and auxiliary winding N4;
Diode circuit comprises again two branch roads in parallel, article one, branch road is composed in series after being connected with above-mentioned auxiliary winding N3 by the negative electrode of diode D1, another branch road is composed in series after being connected with above-mentioned auxiliary winding N4 by the negative electrode of diode D2, further, consequent two parallel branch public ports have two, one of them to be connected with the anode of diode D2 by diode D1 and to form, and another is, being connected with the different name end of auxiliary winding N4 by above-mentioned auxiliary winding N3 forms;
Output port comprises again G end and H end, the public port that the above-mentioned auxiliary winding N3 of G end connection is wherein connected with the different name end of auxiliary winding N4 and forms, it externally exports and is connected in the input power positive polarity of DC-isolation full-control type converter, and H end connects described diode D1 and to be connected with the anode of diode D2 public port form, its external output is connected in the input power negative polarity of DC-isolation full-control type converter;
As shown in Figure 2, be that a kind of diode-type magnetic bias for full-control type converter of the utility model suppresses the schematic diagram with the basic application scheme of energy feedback device.Be provided with the port corresponded to as shown in Figure 1 at typical DC-isolation full-control type converter, and connect.PWM full-control type converter wherein includes positive activation type, push-pull type, semi-bridge type and bridge-type, and isolating transformer is isolating transformer that is common or high frequency, and rectifying and wave-filtering is custom circuit.
As shown in Figure 3, be that a kind of diode-type magnetic bias for full-control type converter of the utility model suppresses the schematic diagram with energy feedback device specific embodiment.With reference to shown in accompanying drawing 2, its PWM full-control type converter has changed full-bridge topologies into, it is all IGBT device, include IGBT device Q1, IGBT device Q2, IGBT device Q3 and IGBT device Q4, isolating transformer is concrete isolating transformer T1, be provided with the port corresponded to as shown in Figure 1 equally, and connect.
When producing magnetic bias in isolating transformer running, carry out inherently producing positive direction or reciprocal overvoltage at its transformer primary side in switching over process at switching device, now, the energy that the overvoltage of this positive direction produces is transmitted back to power input by the branch road be composed in series after being connected with above-mentioned auxiliary winding N3 by the negative electrode of diode D1, the energy that reciprocal overvoltage produces then is transmitted back to power input by the branch road be composed in series after being connected with above-mentioned auxiliary winding N4 by the negative electrode of diode D2, namely spike interference magnetic bias produced on the one hand is suppressed, effectively realize isolating transformer iron core positive direction and reciprocal two-way anti-magnetic bias, on the other hand this harmful energy is carried out regular after, feed back to power input again.
As the typical specific embodiment of one, general-purpose diode or fast diode can be adopted in above-mentioned described diode circuit, wherein general-purpose diode is used in the lower power circuit of switching frequency, and fast diode applies to the higher power circuit of switching frequency.
The above is only preferred embodiment of the present utility model, not does any pro forma restriction to the utility model.If carry out various distortion or amendment to the utility model execution mode, but still within spirit of the present utility model and principle, all should be included within claims of the present utility model.
Claims (2)
1. the diode-type magnetic bias for full-control type converter suppresses and energy feedback device, it is characterized in that:
Comprise isolating transformer T1, diode circuit and output port three parts;
Described isolating transformer T1 adopts positive activation type circuit connecting mode, and it comprises a winding N1 and secondary winding N2 of major loop, and auxiliary winding N3 and auxiliary winding N4;
Described diode circuit comprises again two branch roads in parallel, article one, branch road is composed in series after being connected with described auxiliary winding N3 by the negative electrode of diode D1, another branch road is composed in series after being connected with described auxiliary winding N4 by the negative electrode of diode D2, further, consequent two parallel branch public ports have two, one of them to be connected with the anode of diode D2 by diode D1 and to form, and another is, being connected with the different name end of auxiliary winding N4 by described auxiliary winding N3 forms;
Described output port comprises again G end and H end, the public port that auxiliary winding N3 described in G end wherein connects is connected with the different name end of auxiliary winding N4 and forms, it externally exports and is connected in the input power positive polarity of DC-isolation full-control type converter, and H end connects described diode D1 and to be connected with the anode of diode D2 public port form, its external output is connected in the input power negative polarity of DC-isolation full-control type converter;
2. the diode-type magnetic bias for full-control type converter according to claim 1 suppresses and energy feedback device, it is characterized in that:
Can adopt general-purpose diode or fast diode in described diode circuit, wherein general-purpose diode is used in the lower power circuit of switching frequency, and fast diode applies to the higher power circuit of switching frequency.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420498776.6U CN204089605U (en) | 2014-09-01 | 2014-09-01 | Diode-type magnetic bias for full-control type converter suppresses and energy feedback device |
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| CN201420498776.6U CN204089605U (en) | 2014-09-01 | 2014-09-01 | Diode-type magnetic bias for full-control type converter suppresses and energy feedback device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836458A (en) * | 2015-05-15 | 2015-08-12 | 浙江工商大学 | Energy recovery device for gas plasma reactor and high voltage power supply with energy recovery |
| CN105375770A (en) * | 2014-09-01 | 2016-03-02 | 株洲中达特科电子科技有限公司 | Diode-type bias magnet suppression and energy feedback device applied to full-controllable converter |
-
2014
- 2014-09-01 CN CN201420498776.6U patent/CN204089605U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375770A (en) * | 2014-09-01 | 2016-03-02 | 株洲中达特科电子科技有限公司 | Diode-type bias magnet suppression and energy feedback device applied to full-controllable converter |
| CN104836458A (en) * | 2015-05-15 | 2015-08-12 | 浙江工商大学 | Energy recovery device for gas plasma reactor and high voltage power supply with energy recovery |
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