CN105141157A - Single-stage vehicle-mounted power supply inverter capable of boosting voltage and reducing voltage - Google Patents
Single-stage vehicle-mounted power supply inverter capable of boosting voltage and reducing voltage Download PDFInfo
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- CN105141157A CN105141157A CN201510518708.0A CN201510518708A CN105141157A CN 105141157 A CN105141157 A CN 105141157A CN 201510518708 A CN201510518708 A CN 201510518708A CN 105141157 A CN105141157 A CN 105141157A
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Abstract
The invention discloses a single-stage vehicle-mounted power supply inverter capable of boosting voltage and reducing voltage. The single-stage vehicle-mounted power supply comprises a first voltage boosting unit, a second voltage boosting unit, a first by-pass switch tube and a second by-pass switch tube; the first voltage boosting unit comprises a first switch tube, a second switch tube, a first inductor and a first capacitor; the second voltage boosting unit comprises a third switch tube, a fourth switch tube, a second inductor and a second capacitor; and the first inductor and the second inductor are both coupling inductors. The input voltage of the circuit is large in variation ranges, and the coupling inductors are adopted, so that ripples can be effectively suppressed, impact on the circuit caused by damaged devices can be reduced, and short circuit is avoided.
Description
Technical field
The present invention relates to a kind of single-stage lifting press vehicle mounted power inverter, belong 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.
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.
The inverter of single stage power converter is conducive to the lifting of power density and efficiency, and single stage type inverter has power stage and only has one-level, the advantages such as efficiency is high, and volume is little.The inverter of double-boost converter, adopts the two-way DC/DC converter differential output of two groups of independent symmetrical, obtains pure sinusoid alternating voltage.Common modulation system makes two groups of Boost respectively export a road to differ the voltage that 180 ° are with direct current biasings, obtains the ac output voltage of lifting press through differential output.The all power switchs of this modulation system downconverter are all in high frequency modulated state in whole power frequency period, and inductive current is large, switch tube voltage current stress is also larger, inductor loss, switching tube on-state loss and switching loss is caused to increase, there is inner circulation in whole converter simultaneously, is unfavorable for the lifting of efficiency.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of single-stage lifting press vehicle mounted power inverter, solve the problem that in prior art, vehicle power switch tube voltage stress is large, ripple is strong.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
A kind of single-stage lifting press vehicle mounted power inverter, comprise the first boosting unit, second boosting unit, first by-pass switch pipe, second by-pass switch pipe, described first boosting unit comprises the first switching tube, second switch pipe, first inductance, first electric capacity, second boosting unit comprises the 3rd switching tube, 4th switching tube, second inductance, second electric capacity, first electric capacity, second electric capacity includes first end, second end, first inductance and the second inductance are coupling inductance, wherein, first inductance comprises the first winding and the second winding, second inductance comprises the tertiary winding and the 4th winding, first to fourth winding includes first end and the second end, the first end of the first winding and the first end Same Name of Ends each other of the second winding, the first end of the tertiary winding and the first end Same Name of Ends each other of the 4th winding, the first end of the first winding is connected with the positive pole of DC power supply, second end of described second winding is connected with the input of the first switching tube, the output of second switch pipe respectively, the output of the first switching tube is connected with the output of the 3rd switching tube, the second end of the first electric capacity, the second end of the second electric capacity respectively, the first end of the described tertiary winding is connected with the positive pole of DC power supply, and the second end of the 4th winding is connected with the input of the 3rd switching tube, the output of the 4th switching tube respectively, the input of described 4th switching tube is connected with the first end of the second electric capacity, the first end of the first electric capacity is as the first output of this inverter, the first end of the second electric capacity is as the second output of this inverter, the input of the first by-pass switch pipe is connected with the first output of this inverter, the output of the first by-pass switch pipe is connected with the second end of the first winding, the first end of the second winding respectively, the input of the second by-pass switch pipe is connected with the second output of this inverter, the output of the second by-pass switch pipe is connected with the second end of the tertiary winding, the first end of the 4th winding respectively.
Equal parallel diode between the input of described switching tube, output, the anode of diode is connected with the output of switching tube, and the negative electrode of diode is connected with the input of switching tube.
Described switching circuit comprises switching tube, and described switching tube comprises metal-oxide-semiconductor, triode or JFET.
The capacitance of described first electric capacity and the second electric capacity is 0.1uF ~ 10uF, and capacitance is equal.
The capacitance of described first electric capacity and the second electric capacity is 1uF.
Compared with prior art, the present invention has following beneficial effect:
1, share a boost inductance and HF switch pipe, be conducive to improving power density, reduce the volume of inverter.Make the voltage stress of switching tube less than traditional approach with the current stress of inductance.
2, change range of input voltage is large, adopts coupling inductance, makes it possible to effectively suppress ripple, reduces the impact that device failure causes circuit, avoids short circuit.
3, topology is simple, and efficiency is high, and reliability is high.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of inverter of the present invention.
Embodiment
Below in conjunction with accompanying drawing, structure of the present invention 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 present invention.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 single-stage lifting press vehicle mounted power inverter, comprise the first boosting unit, second boosting unit, first by-pass switch pipe S5, second by-pass switch pipe S6, described first boosting unit comprises the first switching tube S1, second switch pipe S2, first inductance, first electric capacity C1, second boosting unit comprises the 3rd switching tube S3, 4th switching tube S4, second inductance, second electric capacity C2, first electric capacity C1, second electric capacity C2 includes first end, second end, first inductance and the second inductance are coupling inductance, wherein, first inductance comprises the first winding L 1 and the second winding L 2, second inductance comprises tertiary winding L3 and the 4th winding L 4, first to fourth winding includes first end and the second end, 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, the first end of tertiary winding L3 and the first end Same Name of Ends each other of the 4th winding L 4, the first end of the first winding L 1 is connected with the positive pole of DC power supply Vin, second end of described second winding L 2 is connected with the input of the first switching tube S1, the output of second switch pipe S2 respectively, the output of the first switching tube S1 is connected with the output of the 3rd switching tube S3, second end of the first electric capacity C1, second end of the second electric capacity C2 respectively, the described first end of tertiary winding L3 is connected with the positive pole of DC power supply, and the second end of the 4th winding L 4 is connected with the input of the 3rd switching tube S3, the output of the 4th switching tube S4 respectively, the input of described 4th switching tube S4 is connected with the first end of the second electric capacity C2, the first end of the first electric capacity C1 is as the first output of this inverter, the first end of the second electric capacity C2 is as the second output of this inverter, the input of the first by-pass switch pipe S5 is connected with the first output of this inverter, the output of the first by-pass switch pipe S5 is connected with the second end of the first winding L 1, the first end of the second winding L 2 respectively, the input of the second by-pass switch pipe S6 is connected with the second output of this inverter, the output of the second by-pass switch pipe S6 is connected with second end of tertiary winding L3, the first end of the 4th winding L 4 respectively.
Equal parallel diode between the input of described switching tube, output, the anode of diode is connected with the output of switching tube, and the negative electrode of diode is connected with the input of switching tube.
Described switching circuit comprises switching tube, and described switching tube comprises metal-oxide-semiconductor, triode or JFET.
The capacitance of described first electric capacity and the second electric capacity is 0.1uF ~ 10uF, and capacitance is equal.
The capacitance of described first electric capacity and the second electric capacity is 1uF.
This invention also possesses following advantage:
Share a boost inductance and HF switch pipe, be conducive to improving power density, reduce the volume of inverter.Make the voltage stress of switching tube less than traditional approach with the current stress of inductance.
Change range of input voltage is large, adopts coupling inductance, makes it possible to effectively suppress ripple, reduces the impact that device failure causes circuit, avoids short circuit.
Topology is simple, and efficiency is high, and reliability is high.
The above is only some embodiments of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. a single-stage lifting press vehicle mounted power inverter, comprise the first boosting unit, second boosting unit, first by-pass switch pipe, second by-pass switch pipe, described first boosting unit comprises the first switching tube, second switch pipe, first inductance, first electric capacity, second boosting unit comprises the 3rd switching tube, 4th switching tube, second inductance, second electric capacity, first electric capacity, second electric capacity includes first end, second end, it is characterized in that: the first inductance and the second inductance are coupling inductance, wherein, first inductance comprises the first winding and the second winding, second inductance comprises the tertiary winding and the 4th winding, first to fourth winding includes first end and the second end, the first end of the first winding and the first end Same Name of Ends each other of the second winding, the first end of the tertiary winding and the first end Same Name of Ends each other of the 4th winding, the first end of the first winding is connected with the positive pole of DC power supply, second end of described second winding is connected with the input of the first switching tube, the output of second switch pipe respectively, the output of the first switching tube is connected with the output of the 3rd switching tube, the second end of the first electric capacity, the second end of the second electric capacity respectively, the first end of the described tertiary winding is connected with the positive pole of DC power supply, and the second end of the 4th winding is connected with the input of the 3rd switching tube, the output of the 4th switching tube respectively, the input of described 4th switching tube is connected with the first end of the second electric capacity, the first end of the first electric capacity is as the first output of this inverter, the first end of the second electric capacity is as the second output of this inverter, the input of the first by-pass switch pipe is connected with the first output of this inverter, the output of the first by-pass switch pipe is connected with the second end of the first winding, the first end of the second winding respectively, the input of the second by-pass switch pipe is connected with the second output of this inverter, the output of the second by-pass switch pipe is connected with the second end of the tertiary winding, the first end of the 4th winding respectively.
2. single-stage lifting press vehicle mounted power inverter according to claim 1, it is characterized in that: equal parallel diode between the input of described switching tube, output, the anode of diode is connected with the output of switching tube, and the negative electrode of diode is connected with the input of switching tube.
3. single-stage lifting press vehicle mounted power inverter according to claim 1 and 2, it is characterized in that: described switching circuit comprises switching tube, described switching tube comprises metal-oxide-semiconductor, triode or JFET.
4. single-stage lifting press vehicle mounted power inverter according to claim 1, is characterized in that: the capacitance of described first electric capacity and the second electric capacity is 0.1uF ~ 10uF, and capacitance is equal.
5. single-stage lifting press vehicle mounted power inverter according to claim 4, is characterized in that: the capacitance of described first electric capacity and the second electric capacity is 1uF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510518708.0A CN105141157A (en) | 2015-08-24 | 2015-08-24 | Single-stage vehicle-mounted power supply inverter capable of boosting voltage and reducing voltage |
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| CN201510518708.0A CN105141157A (en) | 2015-08-24 | 2015-08-24 | Single-stage vehicle-mounted power supply inverter capable of boosting voltage and reducing voltage |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245578A (en) * | 2018-10-16 | 2019-01-18 | 西北工业大学 | A kind of four winding High-gain single-stage formula Buck-Boost type inverter of single magnetic core |
| CN112311262A (en) * | 2020-10-21 | 2021-02-02 | 湖南大学 | Single-phase current type inverter, inverter circuit and control method thereof |
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| CN1377124A (en) * | 2002-04-24 | 2002-10-30 | 艾默生网络能源有限公司 | Switching power supply |
| CN101741273A (en) * | 2009-12-30 | 2010-06-16 | 扬州大学 | Coupling inductance type double Boost inverter circuits in photovoltaic system |
| CN102158107A (en) * | 2011-03-09 | 2011-08-17 | 福州大学 | Single-stage single-phase current type inverter with high step-up ratio |
| CN103457506A (en) * | 2013-08-08 | 2013-12-18 | 南京航空航天大学 | Wide-input single-stage double-way voltage rising and dropping inverter |
| CN104104252A (en) * | 2014-06-30 | 2014-10-15 | 南京航空航天大学 | Single-stage buck-boost dual-Boost inverter and control method thereof |
| CN204967650U (en) * | 2015-08-24 | 2016-01-13 | 苏州市博得立电源科技有限公司 | Vehicle mounted power dc -to -ac converter is pressed to single -stage liftable |
-
2015
- 2015-08-24 CN CN201510518708.0A patent/CN105141157A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1377124A (en) * | 2002-04-24 | 2002-10-30 | 艾默生网络能源有限公司 | Switching power supply |
| CN101741273A (en) * | 2009-12-30 | 2010-06-16 | 扬州大学 | Coupling inductance type double Boost inverter circuits in photovoltaic system |
| CN102158107A (en) * | 2011-03-09 | 2011-08-17 | 福州大学 | Single-stage single-phase current type inverter with high step-up ratio |
| CN103457506A (en) * | 2013-08-08 | 2013-12-18 | 南京航空航天大学 | Wide-input single-stage double-way voltage rising and dropping inverter |
| CN104104252A (en) * | 2014-06-30 | 2014-10-15 | 南京航空航天大学 | Single-stage buck-boost dual-Boost inverter and control method thereof |
| CN204967650U (en) * | 2015-08-24 | 2016-01-13 | 苏州市博得立电源科技有限公司 | Vehicle mounted power dc -to -ac converter is pressed to single -stage liftable |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245578A (en) * | 2018-10-16 | 2019-01-18 | 西北工业大学 | A kind of four winding High-gain single-stage formula Buck-Boost type inverter of single magnetic core |
| CN109245578B (en) * | 2018-10-16 | 2020-05-22 | 西北工业大学 | Single-magnetic-core four-winding high-gain single-stage Buck-Boost inverter |
| CN112311262A (en) * | 2020-10-21 | 2021-02-02 | 湖南大学 | Single-phase current type inverter, inverter circuit and control method thereof |
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Application publication date: 20151209 |