CN204967656U - Vehicle -mounted power supply inverter - Google Patents
Vehicle -mounted power supply inverter Download PDFInfo
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- CN204967656U CN204967656U CN201520636393.5U CN201520636393U CN204967656U CN 204967656 U CN204967656 U CN 204967656U CN 201520636393 U CN201520636393 U CN 201520636393U CN 204967656 U CN204967656 U CN 204967656U
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Abstract
The utility model discloses a vehicle -mounted power supply inverter, including contravariant bridge, inductance, switch element, output filtering unit, the contravariant bridge includes first bridge arm, second bridge arm, the switch element includes first switch element, second switch unit, first switch element, second switch unit include first end, second end respectively, output filtering unit includes filter capacitance, the inductance is coupling inductance, coupling inductance includes first winding, secondary winding, first winding, secondary winding all include first end, second end, and first winding's second end is connected with the first end of secondary winding, first winding's first end and first bridge arm midpoint connection, and the second end of secondary winding is connected with the first end of second switch unit, linked switch pipe between power anodal and the contravariant bridge, the work of the duty ratio control contravariant bridge through adjusting this switch tube. Make output adjustable.
Description
Technical field
The utility model relates to a kind of vehicle mounted power inverter, belongs to AC/DC (DC/AC) device for converting electric energy.
Background technology
Inverter is widely used in motor and drives, uninterruption power source, induction heating, static state reactive generator and the occasion such as compensator and active power filtering.Traditional inverter circuit topology comprises voltage source inverter and current source inverter two class.
The output AC voltage of voltage source inverter is lower than DC bus-bar voltage, therefore voltage source inverter is a voltage-dropping type inverter in essence, in order to realize the function of boosting inverter, needing extra increase first class boost translation circuit, causing converter complicated integral structure.
Current source inverter is a booster type inverter in essence, in order to realize the function of decompression transformation, needing extra increase downconverter circuit, causing converter complicated integral structure; Current source inverter can only realize unidirectional power transfer, and energy can not two-way flow.
In order to solve the problems referred to above of voltage source inverter and current source inverter existence, scholar proposes the concept of Z-source inverter, converter main circuit and power supply is coupled together by introducing a Z source network.Compare with current source inverter with voltage source, the function that Z-source inverter can provide buck to convert, but the transmitted in both directions of energy can not be realized equally, introduce extra by inductance, the passive component of electric capacity composition, adds the volume of system simultaneously, weight and realize cost, controls complexity simultaneously.Propose again the Z-source inverter circuit of some remodeling both at home and abroad on this basis successively, its essence is all realize boosting by introducing passive component, all there are the problems referred to above.
China national Department of Intellectual Property, application number is: 201310020215.5, patent name is the patent document of " single-stage two-way buck-boost inverter ", disclose the single-stage two-way buck-boost inverter that a kind of input filter unit is single filter inductance, this inverter efficiently solves conventional inverter and adopts passive component to realize some problems produced of boosting.
But disclosed in this patent still there is following problem in single-stage two-way buck-boost inverter:
(1) boost capability is limited, namely step-up ratio is low, some application scenario needs circuit to have very high step-up ratio, and only have the circuit of an inductance when realizing high step-up ratio, need the duty ratio of switching tube drive singal very large, the problem that diode reverse recovery brings can be worsened, add switching loss.
(2) too high duty ratio, can strengthen the ripple of inductance, reduces system effectiveness.
Vehicle power has type, 1. inverter, is a kind ofly DC12V direct current to be converted to the AC220V alternating current identical with civil power, for general electrical equipment, is one power supply changeover device easily, gains the name owing to being usually used in automobile.2.DC/DC DC converter power supply, normally changes the direct currents such as 48VDC into 12VDC or 24VDC of automobile batteries and uses to the electric equipment on automobile.
Vehicle power is not only applicable to onboard system, as long as there is the occasion of DC12V DC power supply, all can use power inverter, DC12V is converted to AC220V alternating current, bring convenience to the life of people.Vehicle power fully takes into account outside environment for use, automatically will protect shutdown when there is overload or short circuit phenomenon.The output voltage of vehicle power can make voltage stabilization by the feedback acknowledgment of itself, and unloaded with specified magnitude of voltage change is less than 10V.It should be noted that, the object of vehicle power exports the voltage identical with civil power, meet the needs of electrical appliance, but what in fact vehicle power exported is analog sine, and civil power is real sine wave, both are slightly different, generally do not affect use, and this is the operation principle decision of vehicle power.
At present, the output of vehicle power is all fixing outputs, and adjustable like this scope is little, and serious forgiveness is low, can cause reduce the useful life of vehicle power.
Summary of the invention
Technical problem to be solved in the utility model is: provide a kind of vehicle mounted power inverter, solves vehicle power power in prior art and fixes the problem of output.
The utility model is for solving the problems of the technologies described above by the following technical solutions:
A kind of vehicle mounted power inverter, comprises inverter bridge, inductance, switch element, output filtering unit, described inverter bridge comprises the first brachium pontis, the second brachium pontis, described switch element comprises the first switch element, second switch unit, described first switch element, second switch unit comprise first end, the second end respectively, described output filtering unit comprises filter capacitor, described inductance is coupling inductance, described coupling inductance comprises the first winding, second winding, described first winding, second winding includes first end, second end, wherein, the first end of the first winding and the first end Same Name of Ends each other of the second winding, second end of the first winding and the second end Same Name of Ends each other of the second winding, second end of the first winding is connected with the first end of the second winding, the first end of the first winding is connected with the first brachium pontis mid point, second end of the second winding is connected with the first end of second switch unit, the first end of described first switch element respectively with the second end of the first winding, the first end of the second winding connects, second end of the first switch element is connected with the second brachium pontis mid point, and be connected filter capacitor between the second end of described first switch element with the second end of described second switch unit, connecting valve pipe between the positive pole of described power supply and inverter bridge, by regulating the work of the Duty ratio control inverter bridge of this switching tube.
Described first switch element comprises the first switching tube and second switch pipe, wherein the input of the first switching tube is connected with the mid point of coupling inductance, the output of the first switching tube is connected with the output of second switch pipe, and the input of second switch pipe is connected with the mid point of the second brachium pontis.
Described second switch unit comprises the 3rd switching tube and the 4th switching tube, wherein, the output of the 3rd switching tube is connected with the second end of the second winding, and the input of the 3rd switching tube is connected with the input of the 4th switching tube, and the output of the 4th switching tube is connected with one end of filter capacitor.
Described switching tube comprises metal-oxide-semiconductor, triode or JFET.
A backward diode in parallel between the input of described metal-oxide-semiconductor, triode or JFET and output.
Compared with prior art, the utility model has following beneficial effect:
1, connecting valve pipe between the positive pole and inverter bridge of power supply, by regulating the work of the Duty ratio control inverter bridge of this switching tube, makes power output adjustable.
2, change range of input voltage is large.Can the size of stable DC busbar voltage by the reasonable disposition of the coupling inductance turn ratio.
3, topology is simple, and efficiency is high, and reliability is high.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the utility model inverter.
Embodiment
Below in conjunction with accompanying drawing, structure of the present utility model and the course of work are described further.
Those skilled in the art of the present technique are understandable that, unless otherwise defined, all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the utility model.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
As shown in Figure 1, a kind of vehicle mounted power inverter, comprises inverter bridge, inductance, switch element, output filtering unit, described inverter bridge comprises the first brachium pontis, the second brachium pontis, described switch element comprises the first switch element, second switch unit, described first switch element, second switch unit comprise first end, the second end respectively, described output filtering unit comprises filter capacitor C, described inductance is coupling inductance, described coupling inductance comprises the first winding L 1, second winding L 2, described first winding L 1, second winding L 2 includes first end, second end, wherein, the first end of the first winding L 1 and the first end Same Name of Ends each other of the second winding L 2, second end of the first winding L 1 and the second end Same Name of Ends each other of the second winding L 2, second end of the first winding L 1 is connected with the first end of the second winding L 2, the first end of the first winding L 1 is connected with the first brachium pontis mid point, second end of the second winding L 2 is connected with the first end of second switch unit, the first end of described first switch element respectively with the second end of the first winding, the first end of the second winding connects, second end of the first switch element is connected with the second brachium pontis mid point, and be connected filter capacitor between the second end of described first switch element with the second end of described second switch unit, connecting valve pipe Q9 between the positive pole of described power supply and inverter bridge, by regulating the work of the Duty ratio control inverter bridge of this switching tube.
Described inverter bridge is made up of switching tube Q5 ~ Q8.
Described first switch element comprises the first switching tube Q1 and second switch pipe Q2, wherein the input of the first switching tube Q1 is connected with the mid point of coupling inductance, the output of the first switching tube Q1 is connected with the output of second switch pipe Q2, and the input of second switch pipe Q2 is connected with the mid point of the second brachium pontis.
Described second switch unit comprises the 3rd switching tube Q3 and the 4th switching tube Q4, wherein, the output of the 3rd switching tube Q3 is connected with the second end of the second winding, the input of the 3rd switching tube Q4 is connected with the input of the 4th switching tube Q4, and the output of the 4th switching tube Q4 is connected with one end of filter capacitor.
Described switching tube comprises metal-oxide-semiconductor, triode or JFET.
A backward diode in parallel between the input of described metal-oxide-semiconductor, triode or JFET and output.
The above is only some embodiments of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (5)
1. a vehicle mounted power inverter, comprises inverter bridge, inductance, switch element, output filtering unit, described inverter bridge comprises the first brachium pontis, the second brachium pontis, described switch element comprises the first switch element, second switch unit, described first switch element, second switch unit comprise first end, the second end respectively, described output filtering unit comprises filter capacitor, described inductance is coupling inductance, described coupling inductance comprises the first winding, second winding, described first winding, second winding includes first end, second end, wherein, the first end of the first winding and the first end Same Name of Ends each other of the second winding, second end of the first winding and the second end Same Name of Ends each other of the second winding, second end of the first winding is connected with the first end of the second winding, the first end of the first winding is connected with the first brachium pontis mid point, second end of the second winding is connected with the first end of second switch unit, the first end of described first switch element respectively with the second end of the first winding, the first end of the second winding connects, second end of the first switch element is connected with the second brachium pontis mid point, and be connected filter capacitor between the second end of described first switch element with the second end of described second switch unit, it is characterized in that: connecting valve pipe between the positive pole of described power supply and inverter bridge, by regulating the work of the Duty ratio control inverter bridge of this switching tube.
2. vehicle mounted power inverter according to claim 1, it is characterized in that: described first switch element comprises the first switching tube and second switch pipe, wherein the input of the first switching tube is connected with the mid point of coupling inductance, the output of the first switching tube is connected with the output of second switch pipe, and the input of second switch pipe is connected with the mid point of the second brachium pontis.
3. vehicle mounted power inverter according to claim 1, it is characterized in that: described second switch unit comprises the 3rd switching tube and the 4th switching tube, wherein, the output of the 3rd switching tube is connected with the second end of the second winding, the input of the 3rd switching tube is connected with the input of the 4th switching tube, and the output of the 4th switching tube is connected with one end of filter capacitor.
4. the vehicle mounted power inverter according to Claims 2 or 3, is characterized in that: described switching tube comprises metal-oxide-semiconductor, triode or JFET.
5. vehicle mounted power inverter according to claim 4, is characterized in that: a backward diode in parallel between the input of described metal-oxide-semiconductor, triode or JFET and output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520636393.5U CN204967656U (en) | 2015-08-24 | 2015-08-24 | Vehicle -mounted power supply inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520636393.5U CN204967656U (en) | 2015-08-24 | 2015-08-24 | Vehicle -mounted power supply inverter |
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| Publication Number | Publication Date |
|---|---|
| CN204967656U true CN204967656U (en) | 2016-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520636393.5U Expired - Fee Related CN204967656U (en) | 2015-08-24 | 2015-08-24 | Vehicle -mounted power supply inverter |
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| Country | Link |
|---|---|
| CN (1) | CN204967656U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105141165A (en) * | 2015-08-24 | 2015-12-09 | 苏州市博得立电源科技有限公司 | Vehicle power supply inverter |
| CN105552900A (en) * | 2016-01-21 | 2016-05-04 | 江苏蒙哥马利电梯有限公司 | Non-contact electric energy transmission system used for elevator |
-
2015
- 2015-08-24 CN CN201520636393.5U patent/CN204967656U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105141165A (en) * | 2015-08-24 | 2015-12-09 | 苏州市博得立电源科技有限公司 | Vehicle power supply inverter |
| CN105552900A (en) * | 2016-01-21 | 2016-05-04 | 江苏蒙哥马利电梯有限公司 | Non-contact electric energy transmission system used for elevator |
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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: 20160113 Termination date: 20190824 |