CN204103885U - Boostrap circuit, inverter and air conditioner - Google Patents
Boostrap circuit, inverter and air conditioner Download PDFInfo
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- CN204103885U CN204103885U CN201420412295.9U CN201420412295U CN204103885U CN 204103885 U CN204103885 U CN 204103885U CN 201420412295 U CN201420412295 U CN 201420412295U CN 204103885 U CN204103885 U CN 204103885U
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- triode
- inverter
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Abstract
The utility model provides a kind of boostrap circuit, comprises the first diode D1, triode Q1, the first resistance R2, the first capacitor C3 and voltage stabilizing didoe D3; The base stage of triode Q1 connects the negative electrode of voltage stabilizing didoe D3, and the anode of voltage stabilizing didoe D3 is as the Voltage Reference end of boostrap circuit; The emitter of triode Q1 is as the output of boostrap circuit, and connect between the emitter of triode Q1 and the anode of voltage stabilizing didoe the first capacitor C3; The collector electrode of triode Q1 connects the negative electrode of the first diode D1, and the anode of the first diode D1 is connected to input power; First resistance R2 is connected between the base stage of triode Q1 and the collector electrode of triode Q1.The utility model also relates to a kind of inverter and air conditioner.Boostrap circuit of the present utility model, inverter and air conditioner, achieve the object that this boostrap circuit has precise and stable bootstrap voltage mode, improve the performance of inverter.
Description
Technical field
The utility model relates to air conditioner technical field, particularly relates to a kind of boostrap circuit, inverter and air conditioner.
Background technology
The switching device of inverter circuit needs stable driving voltage, due to the switching device of the lower brachium pontis of inverter circuit and low-tension supply altogether, so namely low-tension supply can be it provide stable driving voltage, but the switching device of upper brachium pontis not with low-tension supply altogether, directly cannot provide driving voltage by low-tension supply, need the switching device that boostrap circuit is upper brachium pontis to provide stable driving voltage.
The bootstrap voltage mode error of general boostrap circuit is large and unstable, IGBT (the Insulated Gate Bipolar Transistor of the upper brachium pontis of inverter may be made like this, insulated gate bipolar transistor) etc. the performance of the driving switch such as IGBT of driving switch and lower brachium pontis inconsistent, cause the output of inverter uneven, thus affect the performance of inverter.
Utility model content
In view of the present situation of prior art, the purpose of this utility model is to provide a kind of boostrap circuit, inverter and air conditioner, this boostrap circuit has precise and stable bootstrap voltage mode, and on the different brachium pontis that improve inverter, the consistency of switching device performance, improves the performance of inverter.
For achieving the above object, the utility model adopts following technical scheme:
A kind of boostrap circuit, comprises the first diode D1, triode Q1, the first resistance R2, the first capacitor C3 and voltage stabilizing didoe D3;
The base stage of described triode Q1 connects the negative electrode of described voltage stabilizing didoe D3, and the anode of described voltage stabilizing didoe D3 is as the Voltage Reference end of described boostrap circuit; The emitter of described triode Q1 is as the output of described boostrap circuit, and connect between the emitter of described triode Q1 and the anode of described voltage stabilizing didoe described first capacitor C3;
The collector electrode of described triode Q1 connects the negative electrode of described first diode D1, and the anode of described first diode D1 is connected to input power; Described first resistance R2 is connected between the base stage of described triode Q1 and the collector electrode of described triode Q1.
Wherein in an embodiment, also comprise the second resistance R1 for current limliting, between the anode that described second resistance R1 is connected on described first diode D1 and described input power.
Wherein in an embodiment, also comprise the second capacitor C1 for filtering and the 3rd capacitor C2, one end of described second capacitor C1 is connected to the collector electrode of described triode Q1, and the other end of described second capacitor C1 is connected to the anode of described voltage stabilizing didoe D3;
Described 3rd capacitor C2 is connected in parallel on the two ends of described voltage stabilizing didoe D3.
Wherein in an embodiment, also comprise the second diode D2, the anode of described second diode D2 connects the emitter of described triode Q1, and the negative electrode of described second diode D2 connects the collector electrode of described triode Q1.
Wherein in an embodiment, described triode Q1 is NPN type triode.
The utility model also relates to a kind of inverter, comprises inverter circuit, also comprises drive circuit and the boostrap circuit described in above-mentioned any one;
The Voltage Reference end of described boostrap circuit connects the earth terminal of described drive circuit and described inverter circuit, the output of described boostrap circuit connects the first input end of described drive circuit, second input of described drive circuit is for inputting pwm signal, and the output of described drive circuit connects described inverter circuit.
Wherein in an embodiment, described inverter circuit is single-phase semi-bridge inversion circuit, single-phase full bridge inverter circuit or three-phase inverter bridge circuit.
Wherein in an embodiment, described inverter circuit is single-phase full bridge inverter circuit, comprises four transistors, is respectively the first transistor Z1, transistor seconds Z2, third transistor Z3 and the 4th transistor Z4;
The collector electrode of described the first transistor Z1 and the collector electrode of described 4th transistor Z4 are all connected to DC bus, the emitter of described the first transistor Z1 connects the collector electrode of described transistor seconds Z2, and the emitter of described 4th transistor Z4 connects the collector electrode of described third transistor Z3; The emitter of described transistor seconds Z2 and the equal ground connection of emitter of described third transistor Z3;
The quantity of described drive circuit is two, is respectively the first drive circuit and the second drive circuit; The base stage of described the first transistor Z1 is connected to the output of described first drive circuit, the base stage of described 4th transistor Z4 is connected to the output of described second drive circuit.
Wherein in an embodiment, the quantity of described boostrap circuit is two, is respectively the first boostrap circuit and the second boostrap circuit; Described first boostrap circuit is corresponding with described first drive circuit to be connected, and described second boostrap circuit is corresponding with described second drive circuit to be connected;
The Voltage Reference end of described first boostrap circuit is connected to the corresponding common port of the emitter of described the first transistor Z1 and the collector electrode of described transistor seconds Z2;
The Voltage Reference end of described second boostrap circuit is connected to the corresponding common port of the described emitter of the 4th transistor Z4 and the collector electrode of described third transistor Z3.
Wherein in an embodiment, described the first transistor Z1, described transistor seconds Z2, described third transistor Z3 and described 4th transistor Z4 are NPN type triode or igbt transistor.
The utility model also relates to a kind of air conditioner, comprises the boostrap circuit described in above-mentioned any one or the inverter described in above-mentioned any one.
The beneficial effects of the utility model are:
Boostrap circuit of the present utility model, inverter and air conditioner, by the connection of the first diode D1, the first resistance R2, zener diode D3, triode Q1 and the first capacitor C3, when the voltage of the Voltage Reference end of this boostrap circuit is 0V, made the voltage stabilizing value U of base voltage clamper at voltage stabilizing didoe of triode Q1 by voltage stabilizing didoe D3
z, charge to the first capacitor C3 after triode Q1 conducting; When the voltage of the Voltage Reference end of this boostrap circuit is DC bus-bar voltage, prevent current reflux to input power by the first diode D1, make the output voltage stabilization of the output of this boostrap circuit at U
z-U
be, achieve the object that this boostrap circuit has precise and stable bootstrap voltage mode, thus the consistency of the performance of switching device on the different brachium pontis that improve inverter, improve the performance of inverter.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of boostrap circuit one embodiment of the present utility model;
Fig. 2 is the schematic diagram of inverter one embodiment of the present utility model.
Embodiment
In order to make the technical solution of the utility model clearly, below in conjunction with accompanying drawing, boostrap circuit of the present utility model, inverter and air conditioner are described in further detail.Should be appreciated that specific embodiment described herein only in order to explain the utility model and to be not used in restriction the utility model.
See Fig. 1 and Fig. 2, as shown in Figure 1, boostrap circuit of the present utility model comprises the first diode D1, the first resistance R2, triode Q1, the first capacitor C3 and voltage stabilizing didoe D3.Wherein, the base stage of triode Q1 connects the negative electrode of voltage stabilizing didoe D3, and the anode of voltage stabilizing didoe D3 is as the Voltage Reference end P1 of boostrap circuit.The emitter of triode Q1 exports bootstrapping voltage U as the output of boostrap circuit
out, connect between the emitter of triode Q1 and the anode of voltage stabilizing didoe D3 the first capacitor C3, and the first capacitor C3 is used for store electrical energy as bootstrap capacitor.The collector electrode of triode Q1 connects the negative electrode of the first diode D1, and the anode of the first diode D1 is connected to input power U
in, the first diode D1 is used for preventing current reflux to input power U
in, ensure input power U
innot damaged.Preferably, triode Q1 is NPN type triode.
First resistance R2 is connected between the base stage of triode Q1 and the collector electrode of triode Q1, for providing bias current for the base stage of triode Q1, makes to define feedback loop between the collector electrode of the base stage of triode Q1 and triode Q1 simultaneously.
When the voltage of the Voltage Reference end P1 of boostrap circuit is 0V, the first diode D1, the first resistance R2 and voltage stabilizing didoe D3 form path, make the voltage stabilizing value U of base voltage clamper at triode Q1 of triode Q1
z.Now, as the bootstrap voltage mode U that the output of boostrap circuit exports
outbe less than U
z-U
be(U
befor triode Q1 base stage-emitter between voltage) time, during triode Q1 conducting, input power U
inby the amplified current of triode Q1, the first capacitor C3 is charged, the first capacitor C3 store electrical energy.
When the voltage U that the voltage of the Voltage Reference end P1 of boostrap circuit is DC bus DC
dCtime, the first diode D1 oppositely ends, and makes input power U
inwith the voltage of Voltage Reference end P1 and the bootstrap voltage mode U of output of boostrap circuit
outkeep apart, prevent input power U
inbe burned.Now, the first capacitor C3 discharges, the bootstrap voltage mode U exported by the output of boostrap circuit
outoutside power supply.
By the connection of the first diode D1, the first resistance R2, zener diode D3, triode Q1 and the first capacitor C3, when the voltage of the Voltage Reference end P1 of this boostrap circuit is 0V, made the voltage stabilizing value U of base voltage clamper at voltage stabilizing didoe of triode Q1 by voltage stabilizing didoe D3
z, charge to the first capacitor C3 after triode Q1 conducting; When the voltage U that the voltage of the Voltage Reference end P1 of this boostrap circuit is DC bus DC
dCtime, prevent current reflux to input power by the first diode D1, make the output voltage stabilization of the output of this boostrap circuit at U
z-U
be, achieve the object that this boostrap circuit has precise and stable bootstrap voltage mode, thus the consistency of the performance of switching device on the different brachium pontis that improve inverter, improve the performance of inverter.
As a kind of embodiment, this boostrap circuit also comprises the second resistance R1, and the second resistance R1 is connected on anode and the input power U of the first diode D1
inbetween, the second resistance R1 is used for current limliting.In the present embodiment, the charging current of the first capacitor C3 can be limited by arranging the second resistance R1, when preventing the charging current of the first capacitor C3 excessive, causing the first capacitor C3 breakdown, reduce the useful life of components and parts.
More preferably, one end that this boostrap circuit also comprises the second capacitor C1 for filtering and the 3rd capacitor C2, the second capacitor C1 is connected to the collector electrode of triode Q1, and the other end of the second capacitor C1 is connected to the anode of voltage stabilizing didoe D3; 3rd capacitor C2 is connected in parallel on the two ends of described voltage stabilizing didoe D3.
More preferably, this boostrap circuit also comprises the second diode D2, the emitter of the anode connecting triode Q1 of the second diode D2, the collector electrode of the negative electrode connecting triode Q1 of the second diode D2, second diode D2 is used for preventing triode Q1 breakdown, ensures the normal work of triode and whole boostrap circuit.
The utility model also relates to a kind of inverter, comprises the boostrap circuit of inverter circuit, drive circuit and above-mentioned any embodiment; The Voltage Reference end P1 of boostrap circuit connects earth terminal and the inverter circuit of drive circuit, the output of boostrap circuit connects the first input end of drive circuit, second input of drive circuit is for inputting pwm signal, and the output of drive circuit is connected to inverter circuit.Like this, by using the output of boostrap circuit as the input of inverter, the stabilized input voltage of inverter can be ensured, improving the performance of inverter.
As a kind of embodiment, inverter circuit can be single-phase semi-bridge inversion circuit, single-phase full bridge inverter circuit or three-phase inverter bridge circuit.
More preferably, in the present embodiment, inverter circuit is single-phase full bridge inverter circuit, comprises four transistors, is respectively the first transistor Z1, transistor seconds Z2, third transistor Z3 and the 4th transistor Z4.Preferably, the first transistor Z1, transistor seconds Z2, third transistor Z3 and the 4th transistor Z4 are NPN type triode or igbt transistor.
Wherein, the collector electrode of the first transistor Z1 and the collector electrode of the 4th transistor Z4 are all connected to DC bus DC, and the emitter of the first transistor Z1 connects the collector electrode of transistor seconds Z2, and the emitter of the 4th transistor Z4 connects the collector electrode of third transistor Z3; The emitter of transistor seconds Z2 and the equal ground connection of emitter of described third transistor Z3.In the present embodiment, the first transistor Z1 and the 4th transistor Z4 forms the upper brachium pontis of inverter circuit, and transistor seconds Z2 and third transistor Z3 forms the lower brachium pontis of inverter circuit.And in the present embodiment, four transistors of inverter circuit form two-way and export.The first via exports the corresponding common port connecting the first transistor Z1 and transistor seconds Z2, and the second tunnel exports the corresponding common port connecting third transistor Z3 and the 4th transistor Z4.
The quantity of drive circuit is two, is respectively the first drive circuit and the second drive circuit; The base stage of the first transistor Z1 is connected to the output of the first drive circuit, the base stage of the 4th transistor Z4 is connected to the output of the second drive circuit.First drive circuit is used for providing stable driving voltage for the first transistor Z1, and the second drive circuit is used for providing stable driving voltage for the 4th transistor Z4.
More preferably, the quantity of boostrap circuit is two, is respectively the first boostrap circuit and the second boostrap circuit; First boostrap circuit is corresponding with the first drive circuit to be connected, and the second boostrap circuit is corresponding with the second drive circuit to be connected.Namely the output of the first boostrap circuit is connected to the first input end of the first drive circuit, and the output of the second boostrap circuit is connected to the first input end of the second drive circuit.And the Voltage Reference end P1 of the first boostrap circuit is connected to the corresponding common port of the emitter of the first transistor Z1 and the collector electrode of transistor seconds Z2; In like manner, the Voltage Reference end P1 of the second boostrap circuit is connected to the corresponding common port of the emitter of the 4th transistor Z4 and the collector electrode of third transistor Z3 simultaneously.
In other embodiments, this inverter circuit also can be single-phase semi-bridge inversion circuit, this single-phase semi-bridge inversion circuit comprises two transistors, and the line connecting relation of two transistors in inverter is identical with the connected mode of transistor seconds Z2 with the first transistor Z1.Now, the quantity of the first drive circuit and the first boostrap circuit is one, for providing stable driving voltage for the transistor of upper brachium pontis.
Certainly, this inverter circuit also can be three-phase inverting circuit.Wherein, three-phase inverting circuit comprises six transistors, and six transistors are connected to form three single-phase semi-bridge inversion circuit, are arranged in parallel between three single-phase semi-bridge inversion circuit, and draws three tunnels outputs.Now, the quantity of boostrap circuit and drive circuit is three, and three boostrap circuits and three drive circuit one_to_one corresponding are arranged.The connected mode of three-phase inverting circuit is similar to the inverter circuit in the present embodiment, repeats no more herein.
The following describes the operation principle of this inverter:
When transistor turns on brachium pontis under inverter circuit, namely when transistor seconds Z2 and third transistor Z3 conducting, the voltage of the Voltage Reference end P1 of boostrap circuit is pulled low to 0V (not considering the conduction voltage drop of transistor internal), now by low-voltage dc power supply U
dc(in the present embodiment, the input power U of boostrap circuit
infor low-voltage dc power supply U
dc), the first resistance R1, the first diode D1, the second resistance R2 and voltage stabilizing didoe D3 form path.Voltage stabilizing didoe D3 makes the base voltage of triode Q1 be stabilized in the voltage stabilizing value U of voltage stabilizing didoe D3
z, the output of boostrap circuit exports bootstrapping voltage U
outto drive circuitry.As the bootstrap voltage mode U of the output of boostrap circuit
outdrop to and be less than U
z-U
be(U
befor triode Q1 base stage-emitter between voltage) time, triode Q1 conducting.Emitter voltage due to triode Q1 equals the bootstrap voltage mode U of the output of boostrap circuit
out, therefore, U
be=U
b-U
e=U
z-U
out, wherein, U
bfor the base voltage of triode Q1, U
efor the emitter voltage of triode Q1.
After triode Q1 conducting, the base current I of triode Q1
bincrease, the current beta I that the Current amplifier effect of triode Q1 makes triode Q1 charge to the first capacitor C3
bincrease, the bootstrap voltage mode U of the output of boostrap circuit
outrise.As the bootstrap voltage mode U of the output of boostrap circuit
outafter rising, the voltage U between the base stage-emitter of triode Q1
bereduce, make the base current I of triode Q1
breduce, the charging current β I of the first capacitor C3
breduce gradually, be finally tending towards 0, make the voltage U of the output of boostrap circuit like this
outbe stabilized in U
z-U
be.
When the transistor turns of brachium pontis on inverter circuit, namely when the first transistor Z1 and transistor seconds Z4 conducting, the voltage of the Voltage Reference end P1 of boostrap circuit is driven high DC bus-bar voltage U
dC, the bootstrap voltage mode U of the output of boostrap circuit
outu is brought up to relative to the voltage on ground
dC+ U
z-U
be, the bootstrap voltage mode U of the output of boostrap circuit
outu is provided to drive circuit
z-U
beinput voltage.Now the first diode D1 oppositely ends, the bootstrap voltage mode U of the output of boostrap circuit
outwith high pressure and the low-voltage dc power supply U of the Voltage Reference end P1 of boostrap circuit
dcbe cut off, ensure that low-voltage dc power supply U
dcsafety.
The utility model also relates to a kind of air conditioner, comprises the boostrap circuit in above-mentioned any embodiment or the inverter in above-mentioned any embodiment.
Boostrap circuit of the present utility model, inverter and air conditioner, by the connection of the first diode D1, the first resistance R2, zener diode D3, triode Q1 and the first capacitor C3, when the voltage of the Voltage Reference end P1 of this boostrap circuit is 0V, made the voltage stabilizing value U of base voltage clamper at voltage stabilizing didoe of triode Q1 by voltage stabilizing didoe D3
z, charge to the first capacitor C3 after triode Q1 conducting; When the voltage of the Voltage Reference end P1 of this boostrap circuit is DC bus-bar voltage, prevents current reflux to input power by the first diode D1, make the output voltage stabilization of the output of this boostrap circuit at U
z-U
be, achieve the object that this boostrap circuit has precise and stable bootstrap voltage mode, thus the consistency of the performance of switching device on the different brachium pontis that improve inverter, improve the performance of inverter.
The above embodiment only have expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (11)
1. a boostrap circuit, is characterized in that, comprises the first diode D1, triode Q1, the first resistance R2, the first capacitor C3 and voltage stabilizing didoe D3;
The base stage of described triode Q1 connects the negative electrode of described voltage stabilizing didoe D3, and the anode of described voltage stabilizing didoe D3 is as the Voltage Reference end of described boostrap circuit; The emitter of described triode Q1 is as the output of described boostrap circuit, and connect between the emitter of described triode Q1 and the anode of described voltage stabilizing didoe described first capacitor C3;
The collector electrode of described triode Q1 connects the negative electrode of described first diode D1, and the anode of described first diode D1 is connected to input power; Described first resistance R2 is connected between the base stage of described triode Q1 and the collector electrode of described triode Q1.
2. boostrap circuit according to claim 1, is characterized in that:
Also comprise the second resistance R1 for current limliting, between the anode that described second resistance R1 is connected on described first diode D1 and described input power.
3. boostrap circuit according to claim 1, is characterized in that:
Also comprise the second capacitor C1 for filtering and the 3rd capacitor C2, one end of described second capacitor C1 is connected to the collector electrode of described triode Q1, and the other end of described second capacitor C1 is connected to the anode of described voltage stabilizing didoe D3;
Described 3rd capacitor C2 is connected in parallel on the two ends of described voltage stabilizing didoe D3.
4. boostrap circuit according to claim 1, is characterized in that:
Also comprise the second diode D2, the anode of described second diode D2 connects the emitter of described triode Q1, and the negative electrode of described second diode D2 connects the collector electrode of described triode Q1.
5. boostrap circuit according to claim 1, is characterized in that:
Described triode Q1 is NPN type triode.
6. an inverter, comprises inverter circuit, it is characterized in that, also comprises drive circuit and the boostrap circuit described in any one of claim 1-5;
The Voltage Reference end of described boostrap circuit connects the earth terminal of described drive circuit and described inverter circuit, the output of described boostrap circuit connects the first input end of described drive circuit, second input of described drive circuit is for inputting pwm signal, and the output of described drive circuit connects described inverter circuit.
7. inverter according to claim 6, is characterized in that:
Described inverter circuit is single-phase semi-bridge inversion circuit, single-phase full bridge inverter circuit or three-phase inverter bridge circuit.
8. inverter according to claim 7, is characterized in that:
Described inverter circuit is single-phase full bridge inverter circuit, comprises four transistors, is respectively the first transistor Z1, transistor seconds Z2, third transistor Z3 and the 4th transistor Z4;
The collector electrode of described the first transistor Z1 and the collector electrode of described 4th transistor Z4 are all connected to DC bus, the emitter of described the first transistor Z1 connects the collector electrode of described transistor seconds Z2, and the emitter of described 4th transistor Z4 connects the collector electrode of described third transistor Z3; The emitter of described transistor seconds Z2 and the equal ground connection of emitter of described third transistor Z3;
The quantity of described drive circuit is two, is respectively the first drive circuit and the second drive circuit; The base stage of described the first transistor Z1 is connected to the output of described first drive circuit, the base stage of described 4th transistor Z4 is connected to the output of described second drive circuit.
9. inverter according to claim 8, is characterized in that:
The quantity of described boostrap circuit is two, is respectively the first boostrap circuit and the second boostrap circuit; Described first boostrap circuit is corresponding with described first drive circuit to be connected, and described second boostrap circuit is corresponding with described second drive circuit to be connected;
The Voltage Reference end of described first boostrap circuit is connected to the corresponding common port of the emitter of described the first transistor Z1 and the collector electrode of described transistor seconds Z2;
The Voltage Reference end of described second boostrap circuit is connected to the corresponding common port of the described emitter of the 4th transistor Z4 and the collector electrode of described third transistor Z3.
10. inverter according to claim 8, is characterized in that:
Described the first transistor Z1, described transistor seconds Z2, described third transistor Z3 and described 4th transistor Z4 are NPN type triode or igbt transistor.
11. 1 kinds of air conditioners, is characterized in that, the inverter comprising the boostrap circuit described in any one of claim 1-5 or comprise described in any one of claim 6-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420412295.9U CN204103885U (en) | 2014-07-23 | 2014-07-23 | Boostrap circuit, inverter and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420412295.9U CN204103885U (en) | 2014-07-23 | 2014-07-23 | Boostrap circuit, inverter and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204103885U true CN204103885U (en) | 2015-01-14 |
Family
ID=52272284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420412295.9U Active CN204103885U (en) | 2014-07-23 | 2014-07-23 | Boostrap circuit, inverter and air conditioner |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104124949A (en) * | 2014-07-23 | 2014-10-29 | 珠海格力电器股份有限公司 | Bootstrap circuit, inverter and air conditioner |
| CN109286309A (en) * | 2018-08-31 | 2019-01-29 | 北京雪迪龙科技股份有限公司 | A kind of single channel power input multichannel positive-negative power output circuit |
| CN117424465A (en) * | 2023-12-18 | 2024-01-19 | 深圳市三瑞电源有限公司 | Photovoltaic inverter assembly with open-circuit voltage protection function and photovoltaic inverter |
-
2014
- 2014-07-23 CN CN201420412295.9U patent/CN204103885U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104124949A (en) * | 2014-07-23 | 2014-10-29 | 珠海格力电器股份有限公司 | Bootstrap circuit, inverter and air conditioner |
| CN109286309A (en) * | 2018-08-31 | 2019-01-29 | 北京雪迪龙科技股份有限公司 | A kind of single channel power input multichannel positive-negative power output circuit |
| CN117424465A (en) * | 2023-12-18 | 2024-01-19 | 深圳市三瑞电源有限公司 | Photovoltaic inverter assembly with open-circuit voltage protection function and photovoltaic inverter |
| CN117424465B (en) * | 2023-12-18 | 2024-03-26 | 深圳市三瑞电源有限公司 | Photovoltaic inverter assembly with open-circuit voltage protection function and photovoltaic inverter |
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