CN204947925U - A kind of high frequency modulated inverter - Google Patents
A kind of high frequency modulated inverter Download PDFInfo
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- CN204947925U CN204947925U CN201520593722.2U CN201520593722U CN204947925U CN 204947925 U CN204947925 U CN 204947925U CN 201520593722 U CN201520593722 U CN 201520593722U CN 204947925 U CN204947925 U CN 204947925U
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- Prior art keywords
- power
- switch pipe
- pole switch
- diode
- triple
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Abstract
The utility model provides a kind of high frequency modulated inverter, and the source electrode of the first power triple-pole switch pipe, the drain electrode of the second power triple-pole switch pipe are connected with the anode of the first power diode, the negative electrode of the 4th power diode; The source electrode of the 4th power triple-pole switch pipe, the drain electrode of the 3rd power triple-pole switch pipe are connected with one end of output filter capacitor, load, output filter capacitor is connected with one end of output inductor with the other end of load, and the negative electrode of the 5th fly-wheel diode, the anode of the 6th fly-wheel diode are connected with the other end of output inductor.This inverter solves bridge arm direct pass problem, and compared with conventional half-bridge type inverter, the voltage stress of power device reduces, and is more applicable to high pressure, powerful occasion; Solve and recover problem without body diode reverse, reduce corresponding reverse recovery loss, there is higher conversion efficiency; There is this inverter also to have control program simpler, be easy to realize, high reliability.
Description
Technical field
The utility model relates to the inverter in a kind of electrical energy changer, particularly a kind of high frequency modulated inverter.
Background technology
Along with the development of power electronic technology, inverter obtains investigation and application widely, traditional bridge-type inverter has bridge arm direct pass problem and body diode reverse recovery problem etc., wherein bridge arm direct pass problem reduces the reliability of inverter, for evading bridge arm direct pass problem, need to add Dead Time between upper and lower bridge arm drives, and the THD adding the output of membership increase inverter of Dead Time, even can cause the distortion of output waveform.In addition, body diode reverse recovers problem, then the reverse recovery time showing as body diode is long, and reverse recovery loss is large, is unfavorable for the lifting of inverter efficiency.Thus, have without bridge arm direct pass problem and recover the inverter of problematic features without body diode reverse there is very high researching value and wide its development, can be applicable to power supply reliability and the high occasion of efficiency requirements.
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of high reliability high efficiency high frequency modulated inverter.
For achieving the above object and other relevant objects, the utility model provides a kind of high frequency modulated inverter, and it comprises the first power triple-pole switch pipe; The drain electrode of the first power triple-pole switch pipe is connected with the positive pole of external power supply, and the source electrode of the first power triple-pole switch pipe, the drain electrode of the second power triple-pole switch pipe are connected with the anode of the first power diode, the negative electrode of the 4th power diode; The source electrode of the second power triple-pole switch pipe is connected with the negative pole of external power supply, is connected to the drain electrode of the 5th power triple-pole switch pipe after the negative electrode of the first power diode is connected with the negative electrode of the second power diode; The source electrode of the 5th power triple-pole switch pipe is connected with the anode of the 4th power diode, and the anode of the 4th power diode, the anode of the 3rd power diode are connected with the source electrode of the 5th power triple-pole switch pipe; The anode of the second power diode, the negative electrode of the 3rd power diode are connected with the anode of the 6th power diode, the negative electrode of the 5th power diode; The negative electrode of the 6th power diode, the drain electrode of the 4th power triple-pole switch pipe are connected with the positive pole of external power supply, and the anode of the 5th power diode, the source electrode of the 3rd power triple-pole switch pipe are connected with the negative pole of external power supply; The source electrode of the 4th power triple-pole switch pipe, the drain electrode of the 3rd power triple-pole switch pipe are connected with one end of output filter capacitor, load, output filter capacitor is connected with one end of output inductor with the other end of load, and the negative electrode of the 5th fly-wheel diode, the anode of the 6th fly-wheel diode are connected with the other end of output inductor.
As mentioned above, high frequency modulated inverter of the present utility model has following beneficial effect: this inverter improves and obtains on full-bridge inverter basis, solve bridge arm direct pass problem, compared with conventional half-bridge type inverter, the voltage stress of power device reduces, and is more applicable to high pressure, powerful occasion; Solve and recover problem without body diode reverse, reduce corresponding reverse recovery loss, there is higher conversion efficiency; There is this inverter also to have control program simpler, be easy to realize, high reliability.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the utility model embodiment.
Fig. 2 is the view of the utility model embodiment operation mode 1.
Fig. 3 is the view of the utility model embodiment operation mode 2.
Fig. 4 is the view of the utility model embodiment operation mode 3.
Fig. 5 is the view of the utility model embodiment operation mode 4.
Embodiment
Below by way of specific instantiation, execution mode of the present utility model is described, those skilled in the art the content disclosed by this specification can understand other advantages of the present utility model and effect easily.The utility model can also be implemented or be applied by embodiments different in addition, and the every details in this specification also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present utility model.
Refer to Fig. 1 to Fig. 5.It should be noted that, the diagram provided in the present embodiment only illustrates basic conception of the present utility model in a schematic way, then only the assembly relevant with the utility model is shown in graphic but not component count, shape and size when implementing according to reality is drawn, it is actual when implementing, and the kenel of each assembly, quantity and ratio can be a kind of change arbitrarily, and its assembly layout kenel also may be more complicated.
As shown in Figure 1, the utility model discloses a kind of high frequency modulated inverter, it comprises the first power triple-pole switch pipe
q 1,first power triple-pole switch pipe
q 1drain electrode and external power supply
u ipositive pole connect, the first power triple-pole switch pipe
q 1source electrode, the second power triple-pole switch pipe
q 2drain electrode and the first power diode
d 1anode, the 4th power diode
d 4negative electrode connect.Second power triple-pole switch pipe
q 2source electrode and external power supply
u inegative pole connect, the first power diode
d 1negative electrode and the second power diode
d 2negative electrode be connected after be connected to the 5th power triple-pole switch pipe
q 5drain electrode.5th power triple-pole switch pipe
q 5source electrode and the 4th power diode
d 4anode connect, the 4th power diode
d 4anode, the 3rd power diode
d 3anode and the 5th power triple-pole switch pipe
q 5source electrode connect.Second power diode
d 2anode, the 3rd power diode
d 3negative electrode and the 6th power diode
d 6anode, the 5th power diode
d 5negative electrode connect.6th power diode
d 6negative electrode, the 4th power triple-pole switch pipe
q 4drain electrode and external power supply
u ipositive pole connect, the 5th power diode
d 5anode, the 3rd power triple-pole switch pipe
q 3source electrode and external power supply
u inegative pole connect.4th power triple-pole switch pipe
s 4source electrode, the 3rd power triple-pole switch pipe
s 3drain electrode and output filter capacitor
c f , load
rone end connect, output filter capacitor
c f with load
rthe other end and output inductor
lone end connect, the 5th fly-wheel diode
d 5negative electrode, the 6th fly-wheel diode
d 6anode and output inductor
lthe other end connect.
The operation principle of this high frequency modulated inverter is: be greater than the positive half cycle of zero at output voltage, the 3rd power triple-pole switch pipe
q 3chang Kai, the 4th power triple-pole switch pipe
q 4normally closed, the positive half cycle when output current is greater than zero, the first power triple-pole switch pipe
q 1chang Kai, the second power triple-pole switch pipe
q 2normally closed, by the 5th power triple-pole switch pipe
q 5, the first power diode
d 1, the 3rd power diode
d 3, the 5th power diode
d 5, output inductor
l, output filter capacitor
c f the high frequency modulated circuit 1 of composition works.Positive half cycle when output current is less than zero, the first power triple-pole switch pipe
q 1normally closed, the second power triple-pole switch pipe
q 2chang Kai, by the 5th power triple-pole switch pipe
q 5, the second power diode
d 1, the 4th power diode
d 3, the 5th power diode
d 6, output inductor
l, output filter capacitor
c f the high frequency modulated circuit 2 of composition works; At the minus negative half period of output voltage, the 3rd power triple-pole switch pipe
q 3normally closed, the 4th power triple-pole switch pipe
q 4chang Kai, the negative half period when output current is greater than zero, high frequency modulated circuit 1 works, and the negative half period when output current is greater than zero, high frequency modulated circuit 2 works.Wherein, first, second, third, fourth power triple-pole switch plumber frequency modulation system, plays circuit reversion effect, thus reaches inversion object; 5th power triple-pole switch pipe High ireguency SPWM modulation, to guarantee output voltage waveforms.
Below with accompanying drawing 1 for main circuit structure, 2 to Fig. 5 describes specific works principle and the operation mode of this high frequency modulated inverter by reference to the accompanying drawings.
1. output voltage is greater than zero, and output current is greater than zero, and now circuit comprises two operation modes:
operation mode I: as shown in Figure 2, the first power triple-pole switch pipe
q 1, the 3rd power triple-pole switch pipe
q 3chang Kai, the second power triple-pole switch pipe
q 2, the 4th power triple-pole switch pipe
q 4normally closed, the 5th power triple-pole switch pipe
q 5conducting, high frequency modulated circuit 1 works, and inductive current starts linear rising, to load
rpower supply.
operation mode II: as shown in Figure 3, the first power triple-pole switch pipe
q 1, the 3rd power triple-pole switch pipe
q 3chang Kai, the second power triple-pole switch pipe
q 2, the 4th power triple-pole switch pipe
q 4normally closed, the 5th power triple-pole switch pipe
q 5turn off, inductive current is from the 5th power diode
d 5afterflow, linearly declines.
2. output voltage is less than zero, and output current is less than zero, and now circuit comprises two operation modes:
operation mode III: as shown in Figure 4, the second power triple-pole switch pipe
q 2, the 4th power triple-pole switch pipe
q 4chang Kai, the first power triple-pole switch pipe
q 1, the 3rd power triple-pole switch pipe
q 3normally closed, the 5th power triple-pole switch pipe
q 5conducting, high frequency modulated circuit 2 works, and inductive current starts linear rising, to load
rpower supply.
operation mode IV: as shown in Figure 5, the second power triple-pole switch pipe
q 2, the 4th power triple-pole switch pipe
q 4chang Kai, the first power triple-pole switch pipe
q 1, the 3rd power triple-pole switch pipe
q 3normally closed, the 5th power triple-pole switch pipe
q 5turn off, inductive current is from the 6th power diode
d 6afterflow, linearly declines.
This inverter improves and obtains on full-bridge inverter basis, solves bridge arm direct pass problem, and compared with conventional half-bridge type inverter, the voltage stress of power device reduces, and is more applicable to high pressure, powerful occasion; Solve and recover problem without body diode reverse, reduce corresponding reverse recovery loss, there is higher conversion efficiency; There is this inverter also to have control program simpler, be easy to realize, high reliability.So the utility model effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all without prejudice under spirit of the present utility model and category, can modify above-described embodiment or changes.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that the utility model discloses, must be contained by claim of the present utility model.
Claims (1)
1. a high frequency modulated inverter, is characterized in that: it comprise the first power triple-pole switch pipe (
q 1);
First power triple-pole switch pipe (
q 1) drain electrode and external power supply (
u i) positive pole connect, the first power triple-pole switch pipe (
q 1) source electrode, the second power triple-pole switch pipe (
q 2) drain electrode and the first power diode (
d 1) anode, the 4th power diode (
d 4) negative electrode connect;
Second power triple-pole switch pipe (
q 2) source electrode and external power supply (
u i) negative pole connect, the first power diode (
d 1) negative electrode and the second power diode (
d 2) negative electrode be connected after be connected to the 5th power triple-pole switch pipe (
q 5) drain electrode;
5th power triple-pole switch pipe (
q 5) source electrode and the 4th power diode (
d 4) anode connect, the 4th power diode (
d 4) anode, the 3rd power diode (
d 3) anode and the 5th power triple-pole switch pipe (
q 5) source electrode connect;
Second power diode (
d 2) anode, the 3rd power diode (
d 3) negative electrode and the 6th power diode (
d 6) anode, the 5th power diode (
d 5) negative electrode connect;
6th power diode (
d 6) negative electrode, the 4th power triple-pole switch pipe (
q 4) drain electrode and external power supply (
u i) positive pole connect, the 5th power diode (
d 5) anode, the 3rd power triple-pole switch pipe (
q 3) source electrode and external power supply (
u i) negative pole connect;
4th power triple-pole switch pipe (
s 4) source electrode, the 3rd power triple-pole switch pipe (
s 3) drain electrode and output filter capacitor (
c f ), load (
r) one end connect, output filter capacitor (
c f ) and load (
r) the other end and output inductor (
l) one end connect, the 5th fly-wheel diode (
d 5) negative electrode, the 6th fly-wheel diode (
d 6) anode and output inductor (
l) the other end connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520593722.2U CN204947925U (en) | 2015-08-04 | 2015-08-04 | A kind of high frequency modulated inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520593722.2U CN204947925U (en) | 2015-08-04 | 2015-08-04 | A kind of high frequency modulated inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204947925U true CN204947925U (en) | 2016-01-06 |
Family
ID=55015312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520593722.2U Expired - Fee Related CN204947925U (en) | 2015-08-04 | 2015-08-04 | A kind of high frequency modulated inverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204947925U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105071682A (en) * | 2015-08-04 | 2015-11-18 | 苏州弘鹏新能源有限公司 | High-reliability inverter |
-
2015
- 2015-08-04 CN CN201520593722.2U patent/CN204947925U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105071682A (en) * | 2015-08-04 | 2015-11-18 | 苏州弘鹏新能源有限公司 | High-reliability inverter |
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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: 20160106 Termination date: 20180804 |