CN103457506A - Wide-input single-stage double-way voltage rising and dropping inverter - Google Patents
Wide-input single-stage double-way voltage rising and dropping inverter Download PDFInfo
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Abstract
The invention discloses a wide-input single-stage double-way voltage rising and dropping inverter which comprises an inverter bridge, a coupling inductor, a switch unit and an output filtering unit. The inverter bridge comprises a first bridge arm and a second bridge arm, the switch unit comprises a first switch unit body and a second switch unit body, the first switch unit body and the second switch unit body respectively comprise a first end and a second end, the output filtering unit comprises a filtering capacitor, the coupling inductor comprises a first winding and a second winding, and the output voltage gain is determined by setting the turn ratio of the second winding to the first winding. Under the condition of the same voltage gain, the duty ratio of a switch tube of the wide-input single-stage double-way voltage rising and dropping inverter is smaller than the duty ratio of a single inductance circuit, namely the voltage gain of the circuit of the wide-input single-stage double-way voltage rising and dropping inverter is higher under the condition that the two circuits are the same in duty ratio. Problems caused by diode reverse recovery are effectively solved, the switching losses are reduced, and the service life of the switch tube is prolonged.
Description
Technical field
The present invention relates to a kind of wide input single-stage two-way buck inverter, belong to the technical field of converters.
Background technology
Inverter is widely used in motor and drives, uninterruption power source, induction heating, the occasions such as static state reactive generator and compensator and active power filtering.Traditional inverter circuit topology comprises voltage source inverter and current source inverter two classes.
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, need the extra first class boost translation circuit that increases, cause the converter complicated integral structure.
Current source inverter is a booster type inverter in essence, in order to realize the function of decompression transformation, needs the extra one-level step-down conversion circuit that increases, and causes the converter complicated integral structure; Current source inverter can only be realized the unidirectional power transmission, and energy can not two-way flow.
The problems referred to above that exist in order to solve voltage source inverter and current source inverter, the scholar has proposed the concept of Z-source inverter, by introducing a Z source network by converter main circuit and Electric source coupling.With voltage source, with current source inverter, compare, Z-source inverter can provide the function of buck conversion, but can not realize equally the transmitted in both directions of energy, introduced additionally by inductance, the passive component that electric capacity forms, increased the volume of system simultaneously, weight and realize cost is controlled complicated simultaneously.Proposed successively on this basis again the Z-source inverter circuit of some remodeling both at home and abroad, its essence is all to realize boosting by introducing passive component, all has the problems referred to above.
China national Department of Intellectual Property, application number is: 201310020215.5, the patent document that patent name is " single-stage two-way buck inverter ", disclose the single-stage two-way buck 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 of boosting and producing.
But still there is following problem in the disclosed single-stage two-way buck of this patent inverter:
(1) boost capability is limited, be that step-up ratio is low, some application scenario needs circuit to have very high step-up ratio, and the circuit that only has an inductance is when realizing high step-up ratio, need switching tube to drive the duty ratio of signal very large, can worsen the problem that diode reverse recovery brings, increase switching loss.
(2) too high duty ratio, can strengthen the ripple of inductance, reduces system effectiveness.
Therefore, address these problems promoting the inverter performance most important.
Summary of the invention
Technical problem to be solved by this invention is: a kind of wide input single-stage two-way buck inverter is provided, has solved inverter of the prior art and obtained the problem that high-gain needs high duty ratio.
The present invention, for solving the problems of the technologies described above, adopts following technical scheme:
A kind of wide input single-stage two-way buck inverter, comprise 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 the first switch element, second switch unit comprise respectively first end, the second end; Described output filtering unit comprises filter capacitor; One end of described inductance is connected with the mid point of described the first brachium pontis, and the other end of described inductance is connected with the first end of the first switch element, the first end of second switch unit respectively; The second end of described the first switch element is connected with the mid point of described the second brachium pontis, and is connected filter capacitor between the second end of the second end of described the first switch element and described second switch unit; Described inductance is coupling inductance, and described coupling inductance comprises the first winding, the second winding, by the turn ratio that the second winding and the first winding are set, determines output voltage gain.
The Same Name of Ends of described the first winding is connected with the mid point of described the first brachium pontis; The different name end of described the first winding is connected with the first end of described the first switch element, the Same Name of Ends of the second winding respectively; The different name end of described the second winding is connected with the first end of second switch unit.
The mid point of described the first brachium pontis is connected with the different name end of described the first winding; The Same Name of Ends of described the first winding is connected with the Same Name of Ends of described the second winding, the first end of second switch unit respectively; The different name end of described the second winding is connected with the first end of described the first switch element.
The mid point of described the first brachium pontis is connected with the Same Name of Ends of described the first winding, the Same Name of Ends of the second winding respectively; The different name end of described the first winding is connected with the first end of described the first switch element; The different name end of described the second winding is connected with the first end of described second switch unit.
Compared with prior art, the present invention has following beneficial effect:
In the situation that identical voltage gain, the duty ratio of the relatively single inductive circuit of the duty ratio of switching tube of the present invention is little, and two circuit are in the situation that same duty cycle, and the voltage gain of circuit of the present invention is higher.The problem that can effectively avoid diode reverse recovery to bring, reduced switching loss, extended the useful life of switching tube.
Duty ratio is little, and the inductance ripple of generation is little, has promoted system works efficiency simultaneously.
The accompanying drawing explanation
The block diagram that Fig. 1 is the wide input single-stage two-way of prior art buck inverter.
The circuit diagram that Fig. 2 is the specific embodiment of the invention 1.
Fig. 3 is that the specific embodiment of the invention 1 is at input voltage V
i=50V, the experimental waveform figure that boosts during AC load 500W.
Fig. 4 is that the specific embodiment of the invention 1 is at input voltage V
i=200V, step-down experimental waveform figure during AC load 500W.
The circuit diagram that Fig. 5 is the specific embodiment of the invention 2.
The circuit diagram that Fig. 6 is the specific embodiment of the invention 3.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is elaborated:
Wide input single-stage two-way buck inverter of the present invention, comprise inverter bridge, coupling 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 the first switch element, second switch unit comprise respectively first end, the second end; Described the first switch element, second switch unit are complementary bi-directional electric power electronic switch; Described output filtering unit comprises filter capacitor; Described coupling inductance comprises the first winding L 1, the second winding L 2, by the turn ratio that the second winding L 2 and the first winding L 1 are set, determines output voltage gain.
The first brachium pontis of described inverter bridge comprises switching tube Q
5, switching tube Q
7, the second brachium pontis comprises switching tube Q
6, switching tube Q
8; Described the first switch element comprises switching tube Q1, switching tube Q2, and described second switch unit comprises switching tube Q3, switching tube Q4.
Described switching tube comprises IGBT pipe and diode, and the collector electrode of described IGBT pipe is connected the input as switching tube with the negative electrode of described diode, and the emitter of described IGBT and the anodic bonding of described diode are as the output of switching tube; The output of switching tube Q1 is connected with the output of switching tube Q2, and the input of switching tube Q1 is as the first end of the first switch element, and the input of switching tube Q2 is as the second end of the first switch element; The input of switching tube Q3 is connected with the input of switching tube Q4, and the output of switching tube Q3 is as the first end of second switch unit, and the output of switching tube Q4 is as the second end of the first switch element.
Described IGBT manages available metal-oxide-semiconductor, triode is replaced, the replacement principle is as follows: the collector electrode of the drain electrode of described metal-oxide-semiconductor, the corresponding described IGBT pipe of the collector electrode of triode connects, and the emitter of the source electrode of described metal-oxide-semiconductor, the corresponding described IGBT of the emitter of triode connects.
The wide input single-stage two-way of the present invention buck inverter physical circuit figure and operation principle are as follows:
Specific embodiment 1: wide input single-stage two-way buck inverter (1).
Wide input single-stage two-way buck inverter as shown in Figure 2, comprise inverter bridge, coupling inductance, the first switch element, second switch unit, filter capacitor C; The input of described inverter bridge connects DC power supply E; The Same Name of Ends of described the first winding L 1 is connected with the mid point of inverter bridge the first brachium pontis; The different name end of described the first winding L 1 is connected with the first end of described the first switch element, the Same Name of Ends of the second winding L 2 respectively; The different name end of described the second winding L 2 is connected with the first end of second switch unit; The second end of described the first switch element is connected with the mid point of described the second brachium pontis, and is connected filter capacitor C between the second end of the second end of described the first switch element and described second switch unit; AC load R and filter capacitor C are connected in parallel; Determine output voltage gain by the turn ratio that the second winding L 2 and the first winding L 1 are set.
The control strategy of the present embodiment and operation principle are:
The switching tube Q of inverter bridge
5, Q
6, Q
7, Q
8adopt the SPWM modulation strategy; Two groups of complementary bi-directional electric power electronic switches adopt the complementary duty cycle control strategy.The concrete on-off mode of switching tube Q1, Q2, Q3, Q4 is: take a work period is example, when the alternating voltage polarity of inverter bridge output is timing, and control switch pipe Q2, Q4 normal open, switching tube Q1, Q3 are with the complementary break-make of Dead Time; When the alternating voltage polarity of inverter bridge output when negative, control switch pipe Q1, Q3 normal open, switching tube Q2, Q4 are with the complementary break-make of Dead Time.By above-mentioned control mode, can realize the natural change of current between the first complementary bi-directional electric power electronic switch, the second complementary bi-directional electric power electronic switch, make switch to take over seamlessly.
Value according to input voltage and output voltage, preset the duty ratio of switch element, determine the turn ratio of the second winding L 2 and the first winding L 1, then according to the deviation of output voltage gain and desired voltage gain, the duty ratio of real-time by-pass cock unit, make output voltage gain identical with the desired voltage gain, and keep constant output voltage gain.
Analyze the present embodiment beneficial effect compared with prior art by Fig. 3, Fig. 4: the present invention is boosted the process oscillogram as shown in Figure 3, input voltage Vi=50V, and AC load is 500W, duty ratio during switching tube Q1 high-frequency work changes between 0.45 ~ 0.55.The turn ratio is: in 1, figure, waveform is respectively voltage u on input voltage Vi, filter capacitor
c, the electric current that flows through in switching tube Q1 driving voltage and the first winding
i l1 waveform, the voltage on filter capacitor is output voltage.Can see voltage u on filter capacitor in figure
ceffective value be approximately 110V, peak value is 155V, with respect to input voltage, the gain reached 3 times.
If in prior art, the duty ratio of Q1 keeps 0.55 always, do not consider the pressure drop of circuit loss and switching tube, its theoretical gain only has 2.2, reach the gain of 3 times, and the duty ratio during Q1 high-frequency work should be 0.67 in theory.Consider circuit loss, its duty ratio may surpass 0.7.Obviously, the wide input single-stage two-way of the present invention buck inverter is in the situation that duty ratio is identical, and voltage gain wants large than prior art.Realized the boost function of high-gain.
Step-down process waveform of the present invention as shown in Figure 4, is input voltage Vi=200V, voltage on input voltage Vi, filter capacitor when AC load is 500W
u c , the electric current that flows through in switching tube Q2 driving voltage and the first winding
i l1waveform, now in figure
v c effective value be about 110V, inverter has been realized buck functionality, shortcoming that can only one-way transmission power than current source inverter, wide input single-stage two-way buck inverter has not only been realized reduced output voltage without step-down conversion circuit, simultaneously can the transmitted in both directions energy, than traditional Boost circuit, higher voltage gain is arranged.Visible, wide input single-stage two-way buck inverter structure has been realized the buck output of inverter and the transmitted in both directions of energy simply.
Specific embodiment 2, wide input single-stage two-way buck inverter (2).
Wide input single-stage two-way buck inverter as shown in Figure 5, comprise inverter bridge, coupling inductance, the first switch element, second switch unit, filter capacitor C; The input of described inverter bridge connects DC power supply E; The mid point of described the first brachium pontis is connected with the different name end of described the first winding L 1; The Same Name of Ends of described the first winding L 1 is connected with the Same Name of Ends of described the second winding L 2, the first end of second switch unit respectively; The different name end of described the second winding L 2 is connected with the first end of described the first switch element; The second end of described the first switch element is connected with the mid point of described the second brachium pontis, and is connected filter capacitor C between the second end of the second end of described the first switch element and described second switch unit; AC load R and filter capacitor C are connected in parallel.
The control strategy of the present embodiment and operation principle are:
The switching tube Q of inverter bridge
5, Q
6, Q
7, Q
8adopt the SPWM modulation strategy; Two groups of complementary bi-directional electric power electronic switches adopt the complementary duty cycle control strategy.The concrete on-off mode of switching tube Q1, Q2, Q3, Q4 is: when the alternating voltage polarity of exporting is timing, and switching tube Q2, Q4 normal open, switching tube Q1, Q3 are with the complementary break-make of Dead Time; When the alternating voltage polarity of output when negative, switching tube Q1, Q3 normal open, switching tube Q2, Q4 are with the complementary break-make of Dead Time.By this control mode, can realize the natural change of current between the first complementary bi-directional electric power electronic switch, the second complementary bi-directional electric power electronic switch, make switch to take over seamlessly.
Specific embodiment 3, wide input single-stage two-way buck inverter (3).
Wide input single-stage two-way buck inverter as shown in Figure 6, comprise inverter bridge, coupling inductance, the first switch element, second switch unit, filter capacitor C; The input of described inverter bridge connects DC power supply E; The mid point of described the first brachium pontis is connected with the Same Name of Ends of described the first winding L 1, the Same Name of Ends of the second winding L 2 respectively; The different name end of described the first winding L 1 is connected with the first end of described the first switch element; The different name end of described the second winding L 2 is connected with the first end of described second switch unit; The second end of described the first switch element is connected with the mid point of described the second brachium pontis, and is connected filter capacitor C between the second end of the second end of described the first switch element and described second switch unit; AC load R and filter capacitor C are connected in parallel.
The control strategy of the present embodiment and operation principle are:
The switching tube Q of inverter bridge
5, Q
6, Q
7, Q
8adopt the SPWM modulation strategy; Two groups of complementary bi-directional electric power electronic switches adopt the complementary duty cycle control strategy.The concrete on-off mode of switching tube Q1, Q2, Q3, Q4 is: when the alternating voltage polarity of exporting is timing, and switching tube Q2, Q4 normal open, switching tube Q1, Q3 are with the complementary break-make of Dead Time; When the alternating voltage polarity of output when negative, switching tube Q1, Q3 normal open, switching tube Q2, Q4 are with the complementary break-make of Dead Time.By this control mode, can realize the natural change of current between the first complementary bi-directional electric power electronic switch, the second complementary bi-directional electric power electronic switch, make switch to take over seamlessly.
In sum: when input voltage during higher than output voltage, need to realize the step-down inversion, the first complementary bi-directional electric power electronic switch is in off state, and the second complementary bi-directional electric power electronic switch is in opening state, now circuit equivalent is the conventional voltage source inventer, realizes the step-down invert function; When input voltage during lower than output voltage, need to realize boosting inversion, the first complementary bi-directional electric power electronic switch and the second complementary bi-directional electric power electronic switch are in the complementary switch state, realize the adjusting of voltage gain by regulating the first complementary bi-directional electric power electronic switch work duty ratio, thereby realize boosting invert function.
Wide input single-stage two-way buck inverter involved in the present invention can be realized the output of boosting of high-gain without boost conversion circuit; Transmitted in both directions energy when without step-down conversion circuit, having realized reduced output voltage.
Claims (4)
1. one kind wide input single-stage two-way buck inverter, comprise 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 the first switch element, second switch unit comprise respectively first end, the second end; Described output filtering unit comprises filter capacitor; One end of described inductance is connected with the mid point of described the first brachium pontis, and the other end of described inductance is connected with the first end of the first switch element, the first end of second switch unit respectively; The second end of described the first switch element is connected with the mid point of described the second brachium pontis, and is connected filter capacitor between the second end of the second end of described the first switch element and described second switch unit; It is characterized in that: described inductance is coupling inductance, and described coupling inductance comprises the first winding, the second winding, by the turn ratio that the second winding and the first winding are set, determines output voltage gain.
2. wide input single-stage two-way buck inverter according to claim 1, it is characterized in that: the Same Name of Ends of described the first winding is connected with the mid point of described the first brachium pontis; The different name end of described the first winding is connected with the first end of described the first switch element, the Same Name of Ends of the second winding respectively; The different name end of described the second winding is connected with the first end of second switch unit.
3. wide input single-stage two-way buck inverter according to claim 1, it is characterized in that: the mid point of described the first brachium pontis is connected with the different name end of described the first winding; The Same Name of Ends of described the first winding is connected with the Same Name of Ends of described the second winding, the first end of second switch unit respectively; The different name end of described the second winding is connected with the first end of described the first switch element.
4. wide input single-stage two-way buck inverter according to claim 1, it is characterized in that: the mid point of described the first brachium pontis is connected with the Same Name of Ends of described the first winding, the Same Name of Ends of the second winding respectively; The different name end of described the first winding is connected with the first end of described the first switch element; The different name end of described the second winding is connected with the first end of described second switch unit.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048849A (en) * | 2015-08-27 | 2015-11-11 | 无锡伊佩克科技有限公司 | Optocoupler-isolation vehicle power supply inverter |
| CN105048853A (en) * | 2015-08-27 | 2015-11-11 | 无锡伊佩克科技有限公司 | Control method for photocoupling isolated vehicle-mounted power supply inverter |
| CN105048848A (en) * | 2015-08-27 | 2015-11-11 | 无锡伊佩克科技有限公司 | Output driving circuit of vehicle-mounted power supply inverter |
| CN105048840A (en) * | 2015-08-27 | 2015-11-11 | 无锡伊佩克科技有限公司 | Optocoupler-isolation single-stage boost-buck vehicle power supply inverter |
| CN105141161A (en) * | 2015-08-24 | 2015-12-09 | 苏州市博得立电源科技有限公司 | Control method of single-stage boost-buck vehicle power supply inverter |
| CN105141160A (en) * | 2015-08-24 | 2015-12-09 | 苏州市博得立电源科技有限公司 | Vehicle-mounted power supply photovoltaic inverter |
| CN105141166A (en) * | 2015-08-24 | 2015-12-09 | 苏州市博得立电源科技有限公司 | Control method for vehicle-mounted power inverter |
| 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 |
| CN105141157A (en) * | 2015-08-24 | 2015-12-09 | 苏州市博得立电源科技有限公司 | Single-stage vehicle-mounted power supply inverter capable of boosting voltage and reducing voltage |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002247865A (en) * | 2001-02-19 | 2002-08-30 | Kawamura Electric Inc | Ac chopper |
| CN103078548A (en) * | 2013-01-21 | 2013-05-01 | 南京航空航天大学 | Single-stage bidirectional buck-boost inverter |
-
2013
- 2013-08-08 CN CN201310342367.7A patent/CN103457506B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002247865A (en) * | 2001-02-19 | 2002-08-30 | Kawamura Electric Inc | Ac chopper |
| CN103078548A (en) * | 2013-01-21 | 2013-05-01 | 南京航空航天大学 | Single-stage bidirectional buck-boost inverter |
Non-Patent Citations (1)
| Title |
|---|
| 林维明等: "《改进单周期控制策略的双向大变比DC-DC开关变换器》", 《中国电机工程学报》, vol. 32, no. 21, 25 July 2012 (2012-07-25), pages 31 - 37 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105141161A (en) * | 2015-08-24 | 2015-12-09 | 苏州市博得立电源科技有限公司 | Control method of single-stage boost-buck vehicle power supply inverter |
| CN105141160A (en) * | 2015-08-24 | 2015-12-09 | 苏州市博得立电源科技有限公司 | Vehicle-mounted power supply photovoltaic inverter |
| CN105141166A (en) * | 2015-08-24 | 2015-12-09 | 苏州市博得立电源科技有限公司 | Control method for vehicle-mounted power inverter |
| 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 |
| CN105141157A (en) * | 2015-08-24 | 2015-12-09 | 苏州市博得立电源科技有限公司 | Single-stage vehicle-mounted power supply inverter capable of boosting voltage and reducing voltage |
| CN105048849A (en) * | 2015-08-27 | 2015-11-11 | 无锡伊佩克科技有限公司 | Optocoupler-isolation vehicle power supply inverter |
| CN105048853A (en) * | 2015-08-27 | 2015-11-11 | 无锡伊佩克科技有限公司 | Control method for photocoupling isolated vehicle-mounted power supply inverter |
| CN105048848A (en) * | 2015-08-27 | 2015-11-11 | 无锡伊佩克科技有限公司 | Output driving circuit of vehicle-mounted power supply inverter |
| CN105048840A (en) * | 2015-08-27 | 2015-11-11 | 无锡伊佩克科技有限公司 | Optocoupler-isolation single-stage boost-buck vehicle power supply inverter |
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