CN105375769A - Single-phase full-bridge bias magnet suppression and energy feedback device applied to full-controllable converter - Google Patents
Single-phase full-bridge bias magnet suppression and energy feedback device applied to full-controllable converter Download PDFInfo
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- CN105375769A CN105375769A CN201410439444.5A CN201410439444A CN105375769A CN 105375769 A CN105375769 A CN 105375769A CN 201410439444 A CN201410439444 A CN 201410439444A CN 105375769 A CN105375769 A CN 105375769A
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Abstract
The invention discloses a single-phase full-bridge bias magnet suppression and energy feedback device applied to a full-controllable converter. The device comprises an input port, a full-bridge rectification circuit, a filter circuit and an output port. The input port comprises an E end and an F end and a polarity can not be considered, and the E end and the F end are connected in parallel to two terminals of a primary side of a transformer winding in a transformer primary loop. The output port comprises a G end and an H end. The G end is connected with an input power supply positive polarity of a direct-current isolated full-controllable converter and the H end is connected with a negative polarity. The device of the invention has the advantages of a simple design, a reasonable structure, convenient construction and good versatility. A problem of insufficient bias magnet suppression in the application of the existing direct-current isolated full-controllable converter is overcome, forward-inverse bias magnet resistance of an isolation transformer iron core is effectively realized, and bias magnet energy feedback can be realized too.
Description
Technical field
The present invention relates to a kind of magnetic bias to suppress and energy feedback device, more particularly, relate to a kind of single-phase full bridge type magnetic bias for full-control type converter and suppress 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 object of the invention is to provide a kind of single-phase full bridge 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 foregoing invention object, the invention provides a kind of single-phase full bridge type magnetic bias for full-control type converter and suppressing the technic relization scheme with energy feedback device, comprising input port, full bridge rectifier, filter circuit and output port four most of;
Described input port comprises again E end and F end, can consider polarity, be namely connected in parallel on two terminals of transformer main winding primary side in transformer primary circuit during connection;
The typical bridge rectification circuit that described full bridge rectifier is made up of diode D1, diode D2, diode D3 and diode D4, its ac input division divides the E end and F end that connect described input port;
Described filter circuit is composed in parallel by capacitor C1 and capacitor C2, and is all connected in parallel on the direct current output of described full bridge rectifier, and wherein, capacitor C1 is high frequency capacitor, and capacitor C2 is low frequency capacitor;
Described output port comprises again G end and H end, G end wherein not only connects the anode of described full bridge rectifier, also be connected with the input power positive ends of the DC-isolation full-control type converter of outside, and H end not only connects the negative terminal of described full bridge rectifier, be also connected with the input power negative polarity end of the DC-isolation full-control type converter of outside.
Preferably, the diode in described full bridge rectifier can adopt general-purpose diode or fast diode, and 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 invention has the beneficial effects as follows, a kind of single-phase full bridge type magnetic bias for full-control type converter is provided to suppress and energy feedback device, 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 embodiment of the present invention 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 invention 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 single-phase full bridge type magnetic bias for full-control type converter of the present invention suppresses the composition schematic diagram with energy feedback device.
Fig. 2 is that a kind of single-phase full bridge type magnetic bias for full-control type converter of the present invention suppresses the schematic diagram with the basic application scheme of energy feedback device.
Fig. 3 is that a kind of single-phase full bridge type magnetic bias for full-control type converter of the present invention suppresses the schematic diagram with energy feedback device specific embodiment.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technology of the present invention composition, technical scheme and embodiment are clearly and completely described, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Now the present invention is further described with embodiment by reference to the accompanying drawings.
As shown in Figure 1, be that a kind of single-phase full bridge type magnetic bias for full-control type converter of the present invention suppresses, with the composition schematic diagram of energy feedback device, to it is characterized in that:
Comprise input port, full bridge rectifier, filter circuit and output port four most of;
Input port comprises again E end and F end, can consider polarity, namely be connected in parallel on two terminals of transformer main winding primary side in transformer primary circuit;
The typical bridge rectification circuit that full bridge rectifier is made up of diode D1, diode D2, diode D3 and diode D4, its ac input division divides the E end and F end that connect above-mentioned input port;
Filter circuit is composed in parallel by capacitor C1 and capacitor C2, and is all connected in parallel on the direct current output of above-mentioned full bridge rectifier, and wherein, capacitor C1 is high frequency capacitor, and capacitor C2 is low frequency capacitor;
Output port comprises again G end and H end, G end wherein not only connects the anode of above-mentioned full bridge rectifier, also be connected with the input power positive ends of the DC-isolation full-control type converter of outside, and H end not only connects the negative terminal of above-mentioned full bridge rectifier, be also connected with the input power negative polarity end of the DC-isolation full-control type converter of outside.
As shown in Figure 2, be that a kind of single-phase full bridge type magnetic bias for full-control type converter of the present invention 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 single-phase full bridge type magnetic bias for full-control type converter of the present invention 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 this overvoltage produces, enter by diode D1 by E end and F end, diode D2, the typical bridge rectification circuit that diode D3 and diode D4 forms, again via the filter circuit that capacitor C1 and capacitor C2 compose in parallel, be transmitted back to power input part again to divide, 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, diode in above-mentioned full bridge rectifier can adopt general-purpose diode or fast diode, 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 invention, not does any pro forma restriction to the present invention.If carry out various distortion or amendment to embodiment of the present invention, but still within the spirit and principles in the present invention, all should be included within claims of the present invention.
Claims (2)
1. the single-phase full bridge type magnetic bias for full-control type converter suppresses and energy feedback device, it is characterized in that:
Comprise input port, full bridge rectifier, filter circuit and output port four most of;
Described input port comprises again E end and F end, can consider polarity, be namely connected in parallel on two terminals of transformer main winding primary side in transformer primary circuit during connection;
The typical bridge rectification circuit that described full bridge rectifier is made up of diode D1, diode D2, diode D3 and diode D4, its ac input division divides the E end and F end that connect described input port;
Described filter circuit is composed in parallel by capacitor C1 and capacitor C2, and is all connected in parallel on the direct current output of described full bridge rectifier, and wherein, capacitor C1 is high frequency capacitor, and capacitor C2 is low frequency capacitor;
Described output port comprises again G end and H end, G end wherein not only connects the anode of described full bridge rectifier, also be connected with the input power positive ends of the DC-isolation full-control type converter of outside, and H end not only connects the negative terminal of described full bridge rectifier, be also connected with the input power negative polarity end of the DC-isolation full-control type converter of outside.
2. a kind of single-phase full bridge type magnetic bias for full-control type converter according to claim 1 suppresses and energy feedback device, it is characterized in that:
Diode in described full bridge rectifier can adopt general-purpose diode or fast diode, and 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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| CN201410439444.5A CN105375769A (en) | 2014-09-01 | 2014-09-01 | Single-phase full-bridge bias magnet suppression and energy feedback device applied to full-controllable converter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410439444.5A CN105375769A (en) | 2014-09-01 | 2014-09-01 | Single-phase full-bridge bias magnet suppression and energy feedback device applied to full-controllable converter |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5743563A (en) * | 1980-08-28 | 1982-03-11 | Origin Electric Co Ltd | Power source equipment with unbalanced magnetization suppressing circuit |
| CN101102077A (en) * | 2007-07-20 | 2008-01-09 | 曹文领 | Single-level power factor correction converter circuit |
| CN101707364A (en) * | 2009-12-01 | 2010-05-12 | 河北旭辉电气股份有限公司 | Self-triggering DC reactor current limiter and applications thereof |
| CN103580525A (en) * | 2012-08-10 | 2014-02-12 | 盈威力新能源科技(上海)有限公司 | Minitype grid-connected inverter of active LC absorption network |
| US20140204617A1 (en) * | 2013-01-22 | 2014-07-24 | Denso Corporation | Power converter with current feedback loop |
| CN204089604U (en) * | 2014-09-01 | 2015-01-07 | 株洲中达特科电子科技有限公司 | Single-phase full bridge type magnetic bias for full-control type converter suppresses and energy feedback device |
-
2014
- 2014-09-01 CN CN201410439444.5A patent/CN105375769A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5743563A (en) * | 1980-08-28 | 1982-03-11 | Origin Electric Co Ltd | Power source equipment with unbalanced magnetization suppressing circuit |
| CN101102077A (en) * | 2007-07-20 | 2008-01-09 | 曹文领 | Single-level power factor correction converter circuit |
| CN101707364A (en) * | 2009-12-01 | 2010-05-12 | 河北旭辉电气股份有限公司 | Self-triggering DC reactor current limiter and applications thereof |
| CN103580525A (en) * | 2012-08-10 | 2014-02-12 | 盈威力新能源科技(上海)有限公司 | Minitype grid-connected inverter of active LC absorption network |
| US20140204617A1 (en) * | 2013-01-22 | 2014-07-24 | Denso Corporation | Power converter with current feedback loop |
| CN204089604U (en) * | 2014-09-01 | 2015-01-07 | 株洲中达特科电子科技有限公司 | Single-phase full bridge type magnetic bias for full-control type converter suppresses and energy feedback device |
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