CN106208786A - There is self discharge, H bridge inversion and the solar air-conditioner system of power lightning protection function - Google Patents
There is self discharge, H bridge inversion and the solar air-conditioner system of power lightning protection function Download PDFInfo
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- CN106208786A CN106208786A CN201610725708.2A CN201610725708A CN106208786A CN 106208786 A CN106208786 A CN 106208786A CN 201610725708 A CN201610725708 A CN 201610725708A CN 106208786 A CN106208786 A CN 106208786A
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- discharge
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/041—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using a short-circuiting device
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
Abstract
The invention discloses and a kind of there is self discharge, H bridge inversion and the solar air-conditioner system of power lightning protection function, including solaode, controller for solar, accumulator and transducer air conditioning, controller for solar includes charging circuit, control circuit, lightning protection circuit and discharge circuit, transducer air conditioning includes that inverter circuit, inverter circuit include the 51st to the 52nd IGBT pipe, the 53rd to the 54th metal-oxide-semiconductor, the 51st to the 54th diode, the 51st to the 52nd resistance；Lightning protection circuit includes that the 61st to the 62nd resistance, the 61st to the 63rd varistor, the 61st fuse are to the 64th fuse.Though the present invention can effectively lightning protection, improve security of system performance, can be greatly shortened discharge time, save system energy consumption load be under underloading works or have under fully loaded work higher efficiency, lightning surge that air-conditioning is subject to can be absorbed, protection air-conditioning will not be damaged by lightning surge.
Description
Technical field
The present invention relates to solar airconditioning field, particularly to one, there is self discharge, H bridge inversion and power lightning protection function
Solar air-conditioner system.
Background technology
Solar air-conditioner system is made up of parts such as solaode, controller, accumulator and transducer air conditionings.Existing
Solar air-conditioner system has following defects that controller Lighting Protection Measures is ineffective, affects security of system performance；Accumulator is many
Inevitably there is inconsistent situation in capacity and self discharge between individual cell batteries, affects the life of storage battery.
Traditional discharge circuit is directly at one discharge resistance of the two ends of energy storage or filter capacitor parallel connection, when circuit disconnects
During power supply, the electric charge that electric capacity is remained by discharge resistance consumption.Owing to discharge resistance is directly parallel on electric capacity, work as circuit ON
When power supply is in running order, discharge resistance is constantly in discharge condition, consumes power supply energy and causes circuit to generate heat, particularly
In high-pressure system, supply voltage is higher, and the resistance of discharge resistance is relatively big, and its electric discharge duration can be from a few minutes to ten a few minutes, so
It is possible to cause potential safety hazard, such as, during Measuring error, cannot determine that this equipment discharges the most completely, therefore actual application be wanted
Ask the discharge time of electricity more than circuit the shortest.When suitably the resistance of reduction discharge resistance can shorten power-off during remaining discharge of electricity
Between, but power consumption will increase.Therefore resistance value its power consumption the least is the biggest, and resistance value is long for its discharge time the biggest.
In the design of common H-bridge inverter circuit is applied, four brachium pontis use identical power switch pipe (to use IGBT
Pipe or metal-oxide-semiconductor), whether use the H-bridge inverter circuit of IGBT pipe composition, or the H-bridge inverter circuit of employing metal-oxide-semiconductor composition,
The most all there are some problems.The problem existed is as follows: when 1, using IGBT pipe, due to IGBT pipe conduction voltage drop
Nonlinear characteristic makes the conduction voltage drop of IGBT pipe can't dramatically increase along with the increase of conducting electric current, is operating at full capacity
Time, inversion conversion efficiency is higher；Conversely, as the nonlinear characteristic of IGBT pipe conduction voltage drop makes the conduction voltage drop of IGBT pipe also
Will not be substantially reduced along with the reduction of conducting electric current, in the light hours, inversion conversion efficiency is relatively low.On the other hand be by
Low in the switching frequency of IGBT pipe, the frequency characteristic of the H-bridge inverter circuit being therefore made up of IGBT pipe is undesirable.2, MOS is used
Guan Shi, frequency characteristic improves, but owing to the conduction voltage drop of metal-oxide-semiconductor is linear so that the conduction voltage drop of metal-oxide-semiconductor can be along with leading
Alive increase and dramatically increase, when operating at full capacity, inversion conversion efficiency is relatively low；Otherwise, the conduction voltage drop of metal-oxide-semiconductor is also
Can be substantially reduced along with the reduction of conducting electric current, in the light hours, inversion conversion efficiency is of a relatively high.3, inversion efficiency can be with
Prime DC source changed power and change.Using the H-bridge inverter circuit of IGBT pipe composition, inversion efficiency can be with prime DC source merit
The increase of rate and increase；Using the H-bridge inverter circuit of metal-oxide-semiconductor composition, inversion efficiency can be with the increase of prime DC source power
Reduce.In photovoltaic inversion device or wind power generation inverter, it is more prominent that the shortcoming of this circuit manifests.
Many users do not pull out the custom of power line after being shut down by air-conditioning, and such air-conditioning still electrically connects with city.?
In thundery sky, the transmission line of electricity of civil power is highly susceptible to thunderbolt, is once struck by lightning, will produce in the transmission line of electricity of civil power
Surge, the air-conditioning now electrically connected with city will be impacted by lightning surge, the most impaired.
Summary of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, it is provided that one can be the most anti-
No matter thunder, improve security of system performance, can be greatly shortened discharge time, save system energy consumption load be under underloading works also
Be have under fully loaded work higher efficiency, lightning surge that air-conditioning is subject to can be absorbed, protection air-conditioning will not be by lightning surge
That damages has self discharge, H bridge inversion and the solar air-conditioner system of power lightning protection function.
The technical solution adopted for the present invention to solve the technical problems is: structure one has self discharge, H bridge inversion and electricity
The solar air-conditioner system of source lightning protection function, including solaode, controller for solar, accumulator and transducer air conditioning, institute
State controller for solar and include that charging circuit, control circuit, lightning protection circuit and discharge circuit, described transducer air conditioning include inversion
Circuit and compressor, described solaode is connected with described charging circuit, described charging circuit by described control circuit with
Described discharge circuit connects, and described charging circuit and discharge circuit are the most all connected with described accumulator, and described control circuit is passed through
Described lightning protection circuit is connected with described accumulator, and described discharge circuit is connected with described compressor also by described inverter circuit；
Described discharge circuit includes the 41st fuse, the 41st switch, the 41st diode, the 41st continues
Electrical equipment, the 41st resistance, the 42nd resistance, the 43rd resistance, the 44th resistance, the 45th discharge resistance,
41 electric capacity, the 42nd electric capacity, the 43rd electrochemical capacitor, the 41st audion, the 42nd audion, the 40th
Three metal-oxide-semiconductors, the 44th metal-oxide-semiconductor, the 45th metal-oxide-semiconductor, the 46th metal-oxide-semiconductor, the 47th metal-oxide-semiconductor and the 48th MOS
Pipe, described one end of 41st fuse is connected with the positive pole of described accumulator, the other end of described 41st fuse
Being connected with the anode of described 41st diode by described 41st switch, the positive pole of described accumulator is also by described
The contact of the 41st relay respectively with one end of described 43rd resistance, one end of the 45th discharge resistance, the 4th
One end of 13 electrochemical capacitors, the drain electrode of the 43rd metal-oxide-semiconductor, the drain electrode of the 45th metal-oxide-semiconductor, the leakage of the 47th metal-oxide-semiconductor
Pole connect, the negative electrode of described 41st diode by described 41st resistance respectively with the one of described 41st electric capacity
One end of end and the 42nd resistance connects, the other end ground connection of described 42nd resistance, described 41st audion
Base stage is connected with the other end of described 41st electric capacity, and the colelctor electrode of described 41st audion is respectively with the described 40th
One end of two electric capacity and the other end of the 43rd resistance connect, and the emitter stage of described 41st audion passes through the described 4th
14 resistance eutral groundings, the base stage of described 42nd audion and the other end ground connection of described 42nd electric capacity, the described 4th
The colelctor electrode of 12 audions is connected with the other end of described 45th discharge resistance, the transmitting of described 42nd audion
Pole ground connection, the other end ground connection of described 43rd electrochemical capacitor, the source electrode and the described 44th of described 43rd metal-oxide-semiconductor
The drain electrode of metal-oxide-semiconductor connects, and the source electrode of described 45th metal-oxide-semiconductor is connected with the drain electrode of described 46th metal-oxide-semiconductor, and the described 4th
The source electrode of 17 metal-oxide-semiconductors is connected with the drain electrode of described 48th metal-oxide-semiconductor, the source electrode of described 44th metal-oxide-semiconductor, the 46th
The source electrode of metal-oxide-semiconductor and the source grounding of the 48th metal-oxide-semiconductor, described 41st relay is by described 41st switch
Control；
Described inverter circuit include the 51st IGBT pipe, the 52nd IGBT pipe, the 53rd metal-oxide-semiconductor, the 54th
Metal-oxide-semiconductor, the 51st diode, the 52nd diode, the 53rd diode, the 54th diode, the 51st electricity
Resistance, the 52nd resistance, the first alternating current, the second alternating current and alternating current source, the colelctor electrode of described 51st IGBT pipe passes through
Described 51st resistance is connected with described DC source, the anode of described 51st diode and described 51st IGBT
The emitter stage of pipe connects, and the negative electrode of described 51st diode is connected with described DC source, described 52nd IGBT pipe
Colelctor electrode be connected with described DC source by described 52nd resistance, the anode of described 52nd diode is with described
The emitter stage of the 52nd IGBT pipe connects, and the negative electrode of described 52nd diode is connected with described DC source, and described the
The emitter stage of 51 IGBT pipes is connected with one end of described first alternating current and the drain electrode of the 53rd metal-oxide-semiconductor the most respectively, institute
State the source ground of the 53rd metal-oxide-semiconductor, the plus earth of described 53rd diode, the moon of described 53rd diode
Pole is connected with the drain electrode of described 53rd metal-oxide-semiconductor, and the emitter stage of described 52nd IGBT pipe exchanges with described second respectively
One end of electricity and the drain electrode of the 54th metal-oxide-semiconductor connect, and the other end of described first alternating current passes through described alternating current source with described
The other end of the second alternating current connects, and the source ground of described 54th metal-oxide-semiconductor, the anode of described 54th diode connects
Ground, the negative electrode of described 54th diode is connected with the drain electrode of described 54th metal-oxide-semiconductor；
Described lightning protection circuit includes the 61st resistance, the 62nd resistance, the 61st varistor, the 62nd pressure
Quick resistance, the 63rd varistor, the 61st fuse, the 62nd fuse, the 63rd fuse, the 64th
Fuse and gas-discharge tube, described one end of 61st resistance is connected with the zero line of described DC source, and the described 60th
The other end of one resistance is connected with described one end of 64th fuse and one end of the 61st varistor respectively, described
The other end of the 61st varistor respectively with one end and one end of the 62nd fuse of described 61st fuse
Connecting, the described other end of the 61st fuse is connected with the live wire of described DC source, described 63rd fuse
One end is connected with the live wire of described DC source, and the other end of described 63rd fuse passes through described 62nd pressure-sensitive electricity
Resistance is connected with one end of described gas-discharge tube, and the other end of described 64th fuse passes through described 63rd pressure-sensitive electricity
Resistance is connected with one end of described discharge gas pipe, the other end ground connection of described discharge gas pipe.
In the solar air-conditioner system with self discharge, H bridge inversion and power lightning protection function of the present invention, described
Discharge circuit also includes that the 46th resistance, the emitter stage of described 42nd audion are connect by described 46th resistance
Ground.
In the solar air-conditioner system with self discharge, H bridge inversion and power lightning protection function of the present invention, described
Discharge circuit also includes the 47th resistance, and the source electrode of described 43rd metal-oxide-semiconductor passes through described 47th resistance with described
The drain electrode of the 44th metal-oxide-semiconductor connects.
In the solar air-conditioner system with self discharge, H bridge inversion and power lightning protection function of the present invention, described
Discharge circuit also includes the 48th resistance, and the source electrode of described 45th metal-oxide-semiconductor passes through described 48th resistance with described
The drain electrode of the 46th metal-oxide-semiconductor connects.
In the solar air-conditioner system with self discharge, H bridge inversion and power lightning protection function of the present invention, described
Discharge circuit also includes the 49th resistance, and the source electrode of described 47th metal-oxide-semiconductor passes through described 49th resistance with described
The drain electrode of the 48th metal-oxide-semiconductor connects.
In the solar air-conditioner system with self discharge, H bridge inversion and power lightning protection function of the present invention, described
41st audion and the 42nd audion are NPN type triode.
In the solar air-conditioner system with self discharge, H bridge inversion and power lightning protection function of the present invention, described
43rd metal-oxide-semiconductor, the 44th metal-oxide-semiconductor, the 45th metal-oxide-semiconductor, the 46th metal-oxide-semiconductor, the 47th metal-oxide-semiconductor and the 40th
Eight metal-oxide-semiconductors are N-channel MOS pipe.
That implements the present invention has self discharge, H bridge inversion and the solar air-conditioner system of power lightning protection function, has following
Beneficial effect: owing to being provided with lightning protection circuit, thus can effectively lightning protection, improve security of system performance；Discharge circuit uses
41st switch and the 41st relay achieve and disconnect the 45th discharge resistance, system cut-off when system work
Time the 45th discharge resistance and the 43rd electrochemical capacitor is in parallel, therefore the 45th discharge resistance can select resistance relatively
Little discharge resistance so that this discharge circuit does not consume electric energy when system works, reduces heating, saves system energy, simultaneously can
So that discharge time is greatly shortened, improve the security performance of system；Inverter circuit relative to existing H-bridge inverter circuit, no matter
Load is in underloading work or under fully loaded working condition, has higher efficiency, has obvious energy-saving effect；Differential mode
Lightning surge and common mode lightning surge are all absorbed by lightning protection circuit, will not flow in other circuit of air-conditioning, thus protect air-conditioning
Will not be damaged by lightning surge；So its can effectively lightning protection, improve security of system performance, discharge time, joint can be greatly shortened
No matter about system energy consumption load is under underloading works or has higher efficiency under fully loaded work, can absorb air-conditioning and be subject to
To lightning surge, protection air-conditioning will not be damaged by lightning surge.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, also may be used
To obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is one embodiment of solar air-conditioner system that the present invention has self discharge, H bridge inversion and power lightning protection function
In structural representation；
Fig. 2 is the circuit theory diagrams of discharge circuit in described embodiment；
Fig. 3 is the circuit theory diagrams of inverter circuit in described embodiment；
Fig. 4 is the circuit theory diagrams of lightning protection circuit in described embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
In the present invention has the solar air-conditioner system embodiment of self discharge, H bridge inversion and power lightning protection function, this tool
There is the structural representation of solar air-conditioner system of self discharge, H bridge inversion and power lightning protection function as shown in Figure 1.In Fig. 1, should
The solar air-conditioner system with self discharge, H bridge inversion and power lightning protection function includes solaode PV, controller for solar
1, accumulator BAT and transducer air conditioning 2, wherein, controller for solar 1 includes charging circuit 11, control circuit 12, lightning protection circuit
14 and discharge circuit 13, transducer air conditioning 2 includes inverter circuit 21 and compressor 22, and solaode PV is with charging circuit 11 even
Connecing, charging circuit 11 is connected with discharge circuit 13 by control circuit 12, and charging circuit 11 and discharge circuit 13 are gone back all and electric power storage
Pond BAT connects, and control circuit 12 is connected with accumulator BAT by lightning protection circuit 14, and discharge circuit 13 is also by inverter circuit 21
It is connected with compressor 22.Solaode PV is that the radiation of the sun is converted to electric energy, or is sent in accumulator BAT store
Come, or promote transducer air conditioning 2 to work.The effect of controller for solar 1 is that control is whole has self discharge, H bridge inversion and electricity
The duty of the solar air-conditioner system of source lightning protection function, and accumulator BAT is played additives for overcharge protection and over
Effect.The effect of accumulator BAT is the electrical power storage sent by solaode PV when there being illumination, to need
Time discharge again.Transducer air conditioning 2, can speed governing easily as AC load.
Controller for solar 1 by its lightning protection circuit 14 can effectively lightning protection, strengthen the lightning protection capability of system, raising system
Security performance, accumulator BAT do not lose solar energy conversion energy on the premise of, improve the charge efficiency of accumulator battery 3
And the efficiency of actual of sun-generated electric power, accumulator BAT can ensure that again the activity of accumulator BAT while being charged,
Avoid accumulator BAT to deposit, thus extend the life-span of accumulator BAT largely.
Fig. 2 is the circuit theory diagrams of discharge circuit in the present embodiment.In Fig. 2, discharge circuit 13 includes the 41st fusing
Device F41, the 41st switch S41, the 41st diode D41, the 41st relay J 41, the 41st resistance R41, the
42 resistance R42, the 43rd resistance R43, the 44th resistance R44, the 45th discharge resistance R45, the 41st electricity
Hold C41, the 42nd electric capacity C42, the 43rd electrochemical capacitor C43, the 41st audion Q41, the 42nd audion
Q42, the 43rd metal-oxide-semiconductor Q43, the 44th metal-oxide-semiconductor Q44, the 45th metal-oxide-semiconductor Q45, the 46th metal-oxide-semiconductor Q46, the 4th
17 metal-oxide-semiconductor Q47 and the 48th metal-oxide-semiconductor Q48, wherein, the 41st electric capacity C41 and the 42nd electric capacity C42 is coupling
Electric capacity, the 41st electric capacity C41 is for preventing the front end interference to the 41st audion, the 42nd electric capacity C42 to be used for preventing
The only interference between the 41st audion Q41 and the 42nd audion Q42.44th resistance R44 is current-limiting resistance, uses
In overcurrent protection.45th discharge resistance R45 is relative to other resistance, by much smaller for the resistance than other resistance.
In the present embodiment, the 41st audion Q41 and the 42nd audion Q42 is NPN type triode.40th
Three metal-oxide-semiconductor Q43, the 44th metal-oxide-semiconductor Q44, the 45th metal-oxide-semiconductor Q45, the 46th metal-oxide-semiconductor Q46, the 47th metal-oxide-semiconductor
Q47 and the 48th metal-oxide-semiconductor Q48 is N-channel MOS pipe.Certainly, under the certain situation of the present embodiment, the 41st pole
Pipe Q41 and the 42nd audion Q42 can also be PNP type triode, the 43rd metal-oxide-semiconductor Q43, the 44th metal-oxide-semiconductor
Q44, the 45th metal-oxide-semiconductor Q45, the 46th metal-oxide-semiconductor Q46, the 47th metal-oxide-semiconductor Q47 and the 48th metal-oxide-semiconductor Q48 also may be used
To be P-channel metal-oxide-semiconductor, but at this moment the structure of discharge circuit to change accordingly.
In the present embodiment, one end of the 41st fuse F41 is connected with the positive pole BAT+ of accumulator, the 41st fusing
The other end of device F41 is connected by the anode of the 41st switch S41 and the 41st diode D41, the positive pole BAT of accumulator
+ also by the 41st relay J 41 contact respectively with one end, the 45th discharge resistance R45 of the 43rd resistance R43
One end, one end of the 43rd electrochemical capacitor C43, the drain electrode of the 43rd metal-oxide-semiconductor Q43, the leakage of the 45th metal-oxide-semiconductor Q45
Pole, the drain electrode of the 47th metal-oxide-semiconductor Q47 connect, and the negative electrode of the 41st diode D41 is by the 41st resistance R41 respectively
It is connected with one end of the 41st electric capacity C41 and one end of the 42nd resistance R42, another termination of the 42nd resistance R42
Ground, the base stage of the 41st audion Q41 is connected with the other end of the 41st electric capacity C41, the collection of the 41st audion Q41
Electrode is connected with one end of the 42nd electric capacity C42 and the other end of the 43rd resistance R43 respectively, the 41st audion
The emitter stage of Q41 passes through the 44th resistance R44 ground connection, and the base stage of the 42nd audion Q42 is with the 42nd electric capacity C42's
Other end ground connection, the colelctor electrode of the 42nd audion Q42 and the other end of the 45th discharge resistance R45 connect, and the 40th
The grounded emitter of two audion Q42, the other end ground connection of the 43rd electrochemical capacitor C43, the source of the 43rd metal-oxide-semiconductor Q43
Pole is connected with the drain electrode of the 44th metal-oxide-semiconductor Q44, the source electrode of the 45th metal-oxide-semiconductor Q45 and the drain electrode of the 46th metal-oxide-semiconductor Q46
Connecting, the source electrode of the 47th metal-oxide-semiconductor Q47 and the drain electrode of the 48th metal-oxide-semiconductor Q48 connect, the source of the 44th metal-oxide-semiconductor Q44
Pole, the source electrode of the 46th metal-oxide-semiconductor Q46 and the source grounding of the 48th metal-oxide-semiconductor Q48, the 41st relay J 41 is by
The control of 41 switch S41, say, that when the 41st switch S41 does not close, the 41st relay J 41 is also
Will not close, only after the 41st switch S41 Guan Bi, the 41st relay J 41 is only possible to controlled Guan Bi.
In the present embodiment, when closing the 41st switch S41, control circuit 12 powers on, control circuit 12 detecting system
Basic parameter, if fault-free, then control the 41st relay J 41 adhesive, namely the 41st relay J 41 is controlled closes
Closing, the power supply that accumulator BAT provides is through the 41st resistance R41 and the 42nd resistance R42 dividing potential drop so that the 41st
Pole pipe Q41 opens, therefore the 42nd audion Q42 cut-off, the 45th discharge resistance R45 and the 43rd electrochemical capacitor
C43 disconnects, and therefore in the case of this discharge circuit 13 works, the 45th discharge resistance R45 does not consume electric energy.When the 40th
One switch S41 disconnects, the 41st relay J 41 controlled switch-off, then the dump that accumulator BAT provides, and the 41st
Pole pipe Q41 end, the remaining electricity on the 43rd electrochemical capacitor C43 through the 43rd resistance R43 by the 42nd audion Q42
Opening, now the 45th discharge resistance R45 and the 43rd electrochemical capacitor C43 is in parallel, by the 45th discharge resistance R45
Automatic discharging is realized with the 43rd electrochemical capacitor C43.
Have employed the 41st switch S41 due to discharge circuit 13 and the 41st relay J 41 achieves in system work
The 45th discharge resistance R45 is disconnected, by the 45th discharge resistance R45 and the 43rd electrochemical capacitor during system cut-off when making
C43 is in parallel, and therefore the 45th discharge resistance R45 can select the discharge resistance that resistance is less so that this discharge circuit 13 exists
Do not consume electric energy during system work, reduce heating, save system energy, simultaneously because use the discharge resistance that resistance is less, permissible
Make be greatly shortened discharge time, improve the security performance of system.
In the present embodiment, this discharge circuit 13 also includes the 46th resistance R46, the transmitting of the 42nd audion Q42
The 46th resistance R46 ground connection is passed through in pole.46th resistance R46 is current-limiting resistance, is used for carrying out overcurrent protection.
In the present embodiment, this discharge circuit 13 also includes the 47th resistance R47, and the source electrode of the 43rd metal-oxide-semiconductor Q43 leads to
The drain electrode crossing the 47th resistance R47 and the 44th metal-oxide-semiconductor Q44 connects.This discharge circuit 13 also includes the 48th resistance
R48, the source electrode of the 45th metal-oxide-semiconductor Q45 is connected by the drain electrode of the 48th resistance R48 and the 46th metal-oxide-semiconductor Q46.Should
Discharge circuit 13 also includes the 49th resistance R49, and the source electrode of the 47th metal-oxide-semiconductor Q47 is by the 49th resistance R49 and the
The drain electrode of 48 metal-oxide-semiconductor Q48 connects.47th resistance R47, the 48th resistance R48 and the 49th resistance R49 are
Current-limiting resistance, is used for carrying out overcurrent protection.
Fig. 3 is the circuit theory diagrams of inverter circuit in the present embodiment.In Fig. 3, this inverter circuit 21 includes the 51st
IGBT pipe Q51, the 52nd IGBT pipe Q52, the 53rd metal-oxide-semiconductor Q53, the 54th metal-oxide-semiconductor Q54, the 51st diode
D51, the 52nd diode D52, the 53rd diode D53, the 54th diode D54, the 51st resistance R51,
52 resistance R52, the first alternating current AC1, the second alternating current AC2 and alternating current source.Wherein, the 51st IGBT pipe and the 50th
Two IGBT pipe Q52 are the power switch component of upper half-bridge, and the 53rd metal-oxide-semiconductor Q53 and the 54th metal-oxide-semiconductor Q54 is lower half-bridge
Power switch component.51st resistance R51 and the 52nd resistance R52 is current-limiting resistance, is used for carrying out overcurrent protection,
The security performance of raising system.
In the present embodiment, the colelctor electrode of the 51st IGBT pipe Q51 is by the 51st resistance R51 and DC source VDD
Connecting, the anode of the 51st diode D51 and the emitter stage of the 51st IGBT pipe Q51 connect, the 51st diode D51
Negative electrode be connected with DC source VDD, the 51st diode D51 is the protection diode of the 51st IGBT pipe Q51.5th
The colelctor electrode of 12 IGBT pipe Q52 is connected with DC source VDD by the 52nd resistance R52, the 52nd diode D52's
The emitter stage of anode and the 52nd IGBT pipe Q52 connects, and the negative electrode of the 52nd diode D52 is connected with DC source VDD,
52nd diode D52 is the protection diode of the 52nd IGBT pipe Q52.
In the present embodiment, the emitter stage of the 51st IGBT pipe Q51 the most respectively with one end and the 5th of the first alternating current AC1
The drain electrode of 13 metal-oxide-semiconductor Q53 connects, and the source ground of the 53rd metal-oxide-semiconductor Q53, the anode of the 53rd diode D53 connects
Ground, the drain electrode connection of the negative electrode of the 53rd diode D53 and the 53rd metal-oxide-semiconductor Q53, the 53rd diode D53 is the
The protection diode of 53 metal-oxide-semiconductor Q53.The emitter stage of the 52nd IGBT pipe Q52 respectively with one end of the second alternating current AC2
Connecting with the drain electrode of the 54th metal-oxide-semiconductor Q54, the other end of the first alternating current AC1 is by alternating current source and the second alternating current AC2
The other end connects, the source ground of the 54th metal-oxide-semiconductor Q54, the plus earth of the 54th diode D54, and the 54th
The negative electrode of pole pipe D54 and the drain electrode of the 54th metal-oxide-semiconductor Q54 connect.54th diode D54 is the 54th metal-oxide-semiconductor Q54
Protection diode.
When the pwm control signal of control circuit 12 controls the 51st IGBT pipe Q51 conducting, the 52nd IGBT pipe Q52
Turning off, the SPWM control signal of control circuit 12 controls the 54th metal-oxide-semiconductor Q54 conducting simultaneously, the 53rd metal-oxide-semiconductor Q53 closes
Time disconnected, the sense of current by DC source VDD through the 51st IGBT pipe Q51, the first alternating current AC1, alternating current source, the second alternating current
AC2, the 54th metal-oxide-semiconductor Q54 to ground connection GND；When the pwm control signal of control circuit 12 controls the 52nd IGBT pipe Q52
Conducting, the 51st IGBT pipe Q51 turn off；Simultaneously SPWM control signal control the 53rd metal-oxide-semiconductor Q53 conducting, the 54th
Metal-oxide-semiconductor Q54 turn off time, the sense of current by DC source VDD through the 52nd IGBT pipe Q52, the second alternating current AC2, alternating current source,
First alternating current AC1, the 53rd metal-oxide-semiconductor Q53 to ground connection GND；In a cycle period, the electric current that alternating current source flows through is
Exchange.The amplitude of the alternating current that inversion goes out is determined by frequency and the dutycycle of SPWM control signal.
In the present invention, the 51st IGBT pipe Q51 and the 52nd IGBT pipe Q52 of upper arm are only operated in 50Hz, and traditional
In technology, up and down to arm pipe work in same frequency, the present invention and compared with the existing technology greatly reduce the switch of pipe
Frequency, therefore decreases inverter to the electromagnetic interference of electrical network and pollution.
On operation control manner, inverter circuit 21 uses bifrequency (a road high frequency and a road low frequency) control mode.On
51st IGBT pipe Q51 of half-bridge and the 52nd IGBT pipe Q52 is only used as current polarity and controls device, by a PWM control
Signal processed controls the polarity of the sinusoidal ac that inversion goes out, and is operated in power frequency 50Hz；53rd metal-oxide-semiconductor Q53 of lower half-bridge and
54th metal-oxide-semiconductor Q54 carries out SPWM high frequency switching, the 2nd SPWM control signal control the simple alternating current of inverter circuit output
The amplitude of electricity, its operating frequency is at 20kHz～40KHz.
In the present embodiment, inverter circuit 21 also includes the 53rd resistance R53 and the 54th resistance R54, the 53rd
One end of resistance R53 is connected with the emitter stage of the 51st IGBT pipe Q51, the other end and the 50th of the 53rd resistance R53
The drain electrode of three metal-oxide-semiconductor Q53 connects, and one end of the 54th resistance R54 is connected with the emitter stage of the 52nd IGBT pipe Q52, the
The other end of 54 resistance R54 and the drain electrode of the 54th metal-oxide-semiconductor Q54 connect.53rd resistance R53 and the 54th electricity
Resistance R54 is current-limiting resistance, is used for carrying out overcurrent protection, promotes the security performance of system further.
In the present embodiment, this inverter circuit 21 also includes the 55th resistance R55 and the 56th resistance R56, the 50th
One end of five resistance R55 is connected with the source electrode of the 53rd metal-oxide-semiconductor Q53, the other end ground connection of the 55th resistance R55, and the 5th
One end of 16 resistance R56 is connected with the source electrode of the 54th metal-oxide-semiconductor Q54, the other end ground connection of the 56th resistance R56.The
55 resistance R55 and the 56th resistance R56 are current-limiting resistance, are used for carrying out overcurrent protection, further promote system
Security performance.
In the present embodiment, the 51st IGBT pipe Q51 and the 52nd IGBT pipe Q52 is N-type IGBT pipe.53rd
Metal-oxide-semiconductor Q53 and the 54th metal-oxide-semiconductor Q54 is P-channel metal-oxide-semiconductor.Certainly, under the certain situation of the present embodiment, the 51st
IGBT pipe Q51 and the 52nd IGBT pipe Q52 can also manage for p-type IGBT, the 53rd metal-oxide-semiconductor Q53 and the 54th metal-oxide-semiconductor
Q54 can also be N-channel MOS pipe, but at this moment the circuit structure of inverter circuit 21 also to change accordingly.
Fig. 4 is the circuit theory diagrams of lightning protection circuit in the present embodiment.In Fig. 4, this lightning protection circuit 14 includes the 61st electricity
Resistance R61, the 62nd resistance R62, the 61st varistor VR61, the 62nd varistor VR62, the 63rd pressure-sensitive
Resistance VR63, the 61st fuse F61, the 62nd fuse F62, the 63rd fuse F63, the 64th fuse
F64 and gas-discharge tube FD1.Wherein, one end of the 61st resistance R61 and zero line N (the specifically direct current of DC source VDD
The zero line of the input interface of power supply) connect, the other end of the 61st resistance R61 respectively with the one of the 64th fuse F64
One end of end and the 61st varistor VR61 connects, and the other end of the 61st varistor VR61 is respectively with the 61st
One end of fuse F61 and one end of the 62nd fuse F62 connect, the F61 other end of the 61st fuse and direct current
The live wire L of power vd D connects, and one end of the 63rd fuse F63 is connected with the live wire L of DC source VDD, and the 63rd melts
The other end of disconnected device F63 is connected by one end of the 62nd varistor VR62 and gas-discharge tube FD1, the 64th fusing
The other end of device F64 is connected by one end of the 63rd varistor VR63 and discharge gas pipe FD1, discharge gas pipe FD1
Other end ground connection.
Wherein, the 61st resistance R61 and the 62nd resistance R62 is current-limiting resistance.For the fire to DC source
Loop between line and zero line carries out overcurrent protection, improves the security performance of system.
Have when coming between the differential mode lightning surge live wire L from DC source VDD and zero line N, the 61st varistor
The resistance of VR61 reduces rapidly, and by live wire L and the zero line N short circuit of DC source VDD, differential mode lightning surge is thus eliminated.Have
Common mode lightning surge between the live wire L of DC source VDD and ground GND or when coming between zero line N and ground GND, the 60th
The resistance of two varistor VR62 or the 63rd varistor VR1 reduces rapidly, this common mode lightning surge is guided to gas and puts
In fulgurite FD1, gas-discharge tube FD1 is the most breakdown and starts electric discharge, and common mode lightning surge is thus eliminated.As can be seen here,
Differential mode lightning surge and common mode lightning surge are all absorbed by lightning protection circuit 14, will not flow in other circuit of air-conditioning, thus protect
Protect air-conditioning to be damaged by lightning surge.So its can absorb lightning surge that air-conditioning is subject to, protection air-conditioning will not be by thunderbolt wave
Gush damage.
If the electric current from the differential mode lightning surge come between the live wire L and zero line N of DC source VDD is excessive, the 6th
11 fuse F61 will fuse；If between the live wire L and ground GND of DC source VDD or between zero line N and ground GND
The electric current of the common mode that comes over lightning surge is excessive, and the 63rd fuse F63 or the 64th fuse F64 will fuse, and the 6th
12 fuse F62 (the conventional fuse silk of DC source VDD) also can fuse, thus cuts off DC source VDD.
In the present embodiment, this lightning protection circuit 14 also includes the 63rd resistance R63, one end of the 63rd resistance R63 with
The other end of the 61st resistance R61 connects, the other end of the 63rd resistance R63 and one end of the 64th fuse F64
Connect.63rd resistance R63 is current-limiting resistance, for carrying out the loop between the zero line N of DC source VDD and ground GND
Overcurrent protection, improves the security performance of system further.
In the present embodiment, this lightning protection circuit 14 also includes the 64th resistance R64, one end of the 64th resistance R64 with
The live wire L of DC source VDD connects, and the other end of the 64th resistance R64 and F63 one end of the 63rd fuse connect.
64th resistance R64 is current-limiting resistance, protects for the loop between the live wire L of DC source VDD and ground GND is carried out stream
Protect, further improve the security performance of system.
In a word, due to the fact that and be provided with lightning protection circuit 14, thus can effectively lightning protection, improve security of system performance；?
It is all connected with pressure-sensitive electricity between the live wire L and zero line N of DC source VDD, between live wire L and ground GND and between zero line N and ground GND
Resistance, has when coming between the differential mode lightning surge live wire L from DC source VDD and zero line N, the 61st varistor VR61's
Resistance reduces rapidly, and by live wire L and the zero line N short circuit of DC source VDD, differential mode lightning surge is thus eliminated, and has common mode thunder
Hit between the surge live wire L from DC source VDD and ground GND or when coming between zero line N and ground GND, the 62nd is pressure-sensitive
The resistance of resistance VR62 or the 63rd varistor VR63 reduces rapidly, and this common mode lightning surge is guided to gas-discharge tube
In FD1, gas-discharge tube FD1 is the most breakdown and starts electric discharge, and common mode lightning surge is thus eliminated.As can be seen here, differential mode
Lightning surge and common mode lightning surge are all absorbed by lightning protection circuit, will not flow in other circuit of air-conditioning, thus protect air-conditioning
Will not be damaged by lightning surge.
Discharge circuit 13 is selected the discharge resistance that resistance is less so that this discharge circuit 13 does not consumes when system works
Electric energy, reduces heating, saves system energy consumption, owing to using the discharge resistance that resistance is less, can make discharge time significantly simultaneously
Shorten, improve the security performance of system.51 IGBT pipe Q51 of the upper half-bridge of inverter circuit 21 and the 52nd IGBT pipe
Q52 is only used as current polarity and controls device, and its switching frequency only has 50Hz, takes full advantage of the big electric current low conducting pressure of IGBT pipe
The characteristic of fall, avoids the weakness of IGBT pipe high frequency characteristics difference, thus reduces the output electromagnetic interference of total losses and inverter.By
The 53rd metal-oxide-semiconductor Q53 and the 54th metal-oxide-semiconductor Q54 of lower half-bridge controls the width of the sinusoidal ac of inverter circuit 21 output
Value, its switching frequency operation is at about 30KHz, and the high frequency characteristics and the conduction voltage drop that take full advantage of metal-oxide-semiconductor are linear characteristics,
To adapt to change and the change of prime DC source power of AC load.Compared with the existing technology the switch of pipe is greatly reduced
Frequency, therefore decreases inverter to the electromagnetic interference of electrical network and pollution.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (7)
1. one kind has self discharge, H bridge inversion and the solar air-conditioner system of power lightning protection function, it is characterised in that include too
Sun energy battery, controller for solar, accumulator and transducer air conditioning, described controller for solar includes charging circuit, controls electricity
Road, lightning protection circuit and discharge circuit, described transducer air conditioning includes inverter circuit and compressor, and described solaode is with described
Charging circuit connect, described charging circuit is connected with described discharge circuit by described control circuit, described charging circuit with put
Electricity circuit is the most all connected with described accumulator, and described control circuit is connected with described accumulator by described lightning protection circuit, described
Discharge circuit is connected with described compressor also by described inverter circuit；
Described discharge circuit includes the 41st fuse, the 41st switch, the 41st diode, the 41st relay
Device, the 41st resistance, the 42nd resistance, the 43rd resistance, the 44th resistance, the 45th discharge resistance, the 4th
11 electric capacity, the 42nd electric capacity, the 43rd electrochemical capacitor, the 41st audion, the 42nd audion, the 43rd
Metal-oxide-semiconductor, the 44th metal-oxide-semiconductor, the 45th metal-oxide-semiconductor, the 46th metal-oxide-semiconductor, the 47th metal-oxide-semiconductor and the 48th metal-oxide-semiconductor,
Described one end of 41st fuse is connected with the positive pole of described accumulator, and the other end of described 41st fuse passes through
Described 41st switch is connected with the anode of described 41st diode, and the positive pole of described accumulator is also by the described 4th
The contact of 11 relays respectively with one end of described 43rd resistance, one end of the 45th discharge resistance, the 43rd
One end of electrochemical capacitor, the drain electrode of the 43rd metal-oxide-semiconductor, the drain electrode of the 45th metal-oxide-semiconductor, the drain electrode of the 47th metal-oxide-semiconductor connect
Connect, the negative electrode of described 41st diode by described 41st resistance respectively with one end of described 41st electric capacity and
One end of 42nd resistance connects, the other end ground connection of described 42nd resistance, the base stage of described 41st audion
Being connected with the other end of described 41st electric capacity, the colelctor electrode of described 41st audion is electric with the described 42nd respectively
The one end held and the other end of the 43rd resistance connect, and the emitter stage of described 41st audion passes through the described 44th
Resistance eutral grounding, the base stage of described 42nd audion and the other end ground connection of described 42nd electric capacity, the described 42nd
The colelctor electrode of audion is connected with the other end of described 45th discharge resistance, and the emitter stage of described 42nd audion connects
Ground, the other end ground connection of described 43rd electrochemical capacitor, the source electrode of described 43rd metal-oxide-semiconductor and described 44th MOS
The drain electrode of pipe connects, and the source electrode of described 45th metal-oxide-semiconductor is connected with the drain electrode of described 46th metal-oxide-semiconductor, and the described 40th
The source electrode of seven metal-oxide-semiconductors is connected with the drain electrode of described 48th metal-oxide-semiconductor, the source electrode of described 44th metal-oxide-semiconductor, the 46th
The source electrode of metal-oxide-semiconductor and the source grounding of the 48th metal-oxide-semiconductor, described 41st relay is by described 41st switch
Control；
Described inverter circuit includes the 51st IGBT pipe, the 52nd IGBT pipe, the 53rd metal-oxide-semiconductor, the 54th MOS
Pipe, the 51st diode, the 52nd diode, the 53rd diode, the 54th diode, the 51st resistance,
52nd resistance, the first alternating current, the second alternating current and alternating current source, the colelctor electrode of described 51st IGBT pipe is by described
51st resistance is connected with described DC source, the anode of described 51st diode and described 51st IGBT pipe
Emitter stage connects, and the negative electrode of described 51st diode is connected with described DC source, the collection of described 52nd IGBT pipe
Electrode is connected with described DC source by described 52nd resistance, the anode and the described 5th of described 52nd diode
The emitter stage of 12 IGBT pipes connects, and the negative electrode of described 52nd diode is connected with described DC source, and the described 50th
The emitter stage of one IGBT pipe is connected with one end of described first alternating current and the drain electrode of the 53rd metal-oxide-semiconductor the most respectively, and described
The source ground of 53 metal-oxide-semiconductors, the plus earth of described 53rd diode, the negative electrode of described 53rd diode with
The drain electrode of described 53rd metal-oxide-semiconductor connects, the emitter stage of described 52nd IGBT pipe respectively with described second alternating current
The drain electrode of one end and the 54th metal-oxide-semiconductor connects, and the other end of described first alternating current passes through described alternating current source and described second
The other end of alternating current connects, the source ground of described 54th metal-oxide-semiconductor, the plus earth of described 54th diode,
The negative electrode of described 54th diode is connected with the drain electrode of described 54th metal-oxide-semiconductor；
Described lightning protection circuit includes the 61st resistance, the 62nd resistance, the 61st varistor, the 62nd pressure-sensitive electricity
Resistance, the 63rd varistor, the 61st fuse, the 62nd fuse, the 63rd fuse, the 64th fusing
Device and gas-discharge tube, described one end of 61st resistance is connected with the zero line of described DC source, described 61st electricity
The other end of resistance is connected with described one end of 64th fuse and one end of the 61st varistor respectively, and the described 6th
The other end of 11 varistors is connected with described one end of 61st fuse and one end of the 62nd fuse respectively,
The described other end of the 61st fuse is connected with the live wire of described DC source, one end of described 63rd fuse with
The live wire of described DC source connects, and the other end of described 63rd fuse passes through described 62nd varistor and institute
The one end stating gas-discharge tube connects, and the other end of described 64th fuse passes through described 63rd varistor and institute
The one end stating discharge gas pipe connects, the other end ground connection of described discharge gas pipe.
The most according to claim 1 have self discharge, H bridge inversion and the solar air-conditioner system of power lightning protection function, its
Being characterised by, described discharge circuit also includes the 46th resistance, and the emitter stage of described 42nd audion is by described the
46 resistance eutral groundings.
The most according to claim 2 have self discharge, H bridge inversion and the solar air-conditioner system of power lightning protection function, its
Being characterised by, described discharge circuit also includes the 47th resistance, and the source electrode of described 43rd metal-oxide-semiconductor passes through the described 40th
Seven resistance are connected with the drain electrode of described 44th metal-oxide-semiconductor.
The most according to claim 3 have self discharge, H bridge inversion and the solar air-conditioner system of power lightning protection function, its
Being characterised by, described discharge circuit also includes the 48th resistance, and the source electrode of described 45th metal-oxide-semiconductor passes through the described 40th
Eight resistance are connected with the drain electrode of described 46th metal-oxide-semiconductor.
The most according to claim 4 have self discharge, H bridge inversion and the solar air-conditioner system of power lightning protection function, its
Being characterised by, described discharge circuit also includes the 49th resistance, and the source electrode of described 47th metal-oxide-semiconductor passes through the described 40th
Nine resistance are connected with the drain electrode of described 48th metal-oxide-semiconductor.
6. according to described in claim 1 to 5 any one, there is self discharge, H bridge inversion and the solar energy of power lightning protection function
Air conditioning system, it is characterised in that described 41st audion and the 42nd audion are NPN type triode.
7. according to described in claim 1 to 5 any one, there is self discharge, H bridge inversion and the solar energy of power lightning protection function
Air conditioning system, it is characterised in that described 43rd metal-oxide-semiconductor, the 44th metal-oxide-semiconductor, the 45th metal-oxide-semiconductor, the 46th MOS
Pipe, the 47th metal-oxide-semiconductor and the 48th metal-oxide-semiconductor are N-channel MOS pipe.
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| CN201610725708.2A CN106208786A (en) | 2016-08-25 | 2016-08-25 | There is self discharge, H bridge inversion and the solar air-conditioner system of power lightning protection function |
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| CN201610725708.2A CN106208786A (en) | 2016-08-25 | 2016-08-25 | There is self discharge, H bridge inversion and the solar air-conditioner system of power lightning protection function |
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| CN201854094U (en) * | 2010-09-27 | 2011-06-01 | 天津市松正电动科技有限公司 | Automatic discharging circuit |
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| CN202261070U (en) * | 2011-10-09 | 2012-05-30 | 郑州朗睿科技有限公司 | H-bridge inverter circuit |
| CN204304425U (en) * | 2014-11-28 | 2015-04-29 | 东莞市奥源电子科技有限公司 | power lightning protection circuit |
| CN204578193U (en) * | 2015-04-28 | 2015-08-19 | 周磊 | A kind of solar air-conditioner system |
| CN204633452U (en) * | 2015-06-04 | 2015-09-09 | 袁玉平 | Controller for solar |
| CN205489506U (en) * | 2016-03-22 | 2016-08-17 | 广州市金宏骏科技工程有限公司 | Thunder and lightning protection circuit for high voltage direct current power supply system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5976121A (en) * | 1982-10-21 | 1984-05-01 | 中部電力株式会社 | Solar light generating device |
| CN101615859A (en) * | 2008-06-27 | 2009-12-30 | 通用电气公司 | High-frequency photovoltaic inverter |
| CN201854094U (en) * | 2010-09-27 | 2011-06-01 | 天津市松正电动科技有限公司 | Automatic discharging circuit |
| CN102447250A (en) * | 2010-09-30 | 2012-05-09 | 深圳茂硕电源科技股份有限公司 | Simple and practical lightning protection circuit |
| CN202261070U (en) * | 2011-10-09 | 2012-05-30 | 郑州朗睿科技有限公司 | H-bridge inverter circuit |
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Application publication date: 20161207 |