CN204333973U - A kind of schedulable formula bimodulus inverter - Google Patents

A kind of schedulable formula bimodulus inverter Download PDF

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Publication number
CN204333973U
CN204333973U CN201420711906.XU CN201420711906U CN204333973U CN 204333973 U CN204333973 U CN 204333973U CN 201420711906 U CN201420711906 U CN 201420711906U CN 204333973 U CN204333973 U CN 204333973U
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CN
China
Prior art keywords
circuit
change over
over switch
energy
inverter
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Expired - Fee Related
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CN201420711906.XU
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Chinese (zh)
Inventor
汪义旺
张波
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Suzhou Vocational University
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Suzhou Vocational University
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Abstract

The utility model discloses a kind of schedulable formula bimodulus inverter, comprising: main circuit module and control circuit module; Main circuit module comprises change over switch (A1, A2, A3), DC/DC translation circuit, energy storage filter circuit and DC/AC inverter circuit; DC/DC translation circuit is made up of bidirectional, dc transformation resistance; The combined filter circuit that energy storage filter circuit is made up of inductance L and electric capacity C forms; DC/AC inverter circuit is made up of 4 full bridge inverters that control switching tube forms entirely; Change over switch A1 common port is connected with DC/DC translation circuit, and two tip sides are connected with generation of electricity by new energy output and energy-storage system respectively; Change over switch A2 common port is connected with DC/DC translation circuit, and two tip sides are connected with energy storage filter circuit and energy-storage system respectively; Change over switch A3 common port is connected with DC/AC inverter circuit, and output is connected with electrical network and local load respectively.By the way, the utility model can work in various modes, meets the demand of different application occasion.

Description

A kind of schedulable formula bimodulus inverter
Technical field
The utility model relates to generation of electricity by new energy inverter field, particularly relates to a kind of schedulable formula bimodulus inverter.
Background technology
Along with the development and utilization of the new forms of energy such as solar energy, wind power generation, distributed new electricity generation system will become development trend.Power supply in distributed new electricity generation system has Independent Power Generation and two kinds of mode of operations of generating electricity by way of merging two or more grid systems usually.Inverter is as one of the nucleus equipment of distributed new electricity generation system, and its function directly determines the application mode of distributed new electricity generation system.At present, only have single grid-connected or single from net function, as will be realized and from net application, two cover inverter systems need be adopted, the increase of application cost certainly will be caused simultaneously, also can increase the complexity of system simultaneously and reduce the reliability of system.Meanwhile, along with more and more stricter to the performance requirement of distributed new electricity generation system, inverter is also needed to have schedulable function in most occasion, to meeting the demand of electrical network and user better.
Utility model content
The technical problem that the utility model mainly solves is to provide a kind of schedulable formula bimodulus inverter, organize change over switch by adopting more, in conjunction with DC/DC two-way changing and PWM rectify control technology, the multiple-working mode of inverter can be realized by a set of main circuit, meet the various working operation demand of inverter, realize its schedulable function; Meanwhile, adopt two CSTR division of labor control strategy, control efficiency and reliability can be improved, adopt control method flexibly, realize one-machine-multi-function, drastically increase complete machine cost performance and the cost reducing inverter.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: provide a kind of schedulable formula bimodulus inverter, comprising: main circuit module and control circuit module; Described main circuit module comprises change over switch A1, change over switch A2, change over switch A3, DC/DC translation circuit, energy storage filter circuit and DC/AC inverter circuit; Described change over switch A1 is made up of single relay, and described change over switch A2 is made up of two relay assemblies, and described change over switch A3 is made up of two relay assemblies; Described DC/DC translation circuit is made up of bidirectional, dc transformation resistance; The combined filter circuit that described energy storage filter circuit is made up of inductance L and electric capacity C forms; Described DC/AC inverter circuit is made up of 4 full bridge inverters that control switching tube forms entirely; Described change over switch A1 common port is connected with DC/DC translation circuit, and two tip sides are connected with energy-storage system with generation of electricity by new energy output respectively; Described change over switch A2 common port is connected with DC/DC translation circuit, and two tip sides are connected with energy-storage system with energy storage filter circuit respectively; Described change over switch A3 common port is connected with DC/AC inverter circuit, and output is connected with local load with electrical network respectively.
Preferably, described control circuit module comprises sample circuit B1, sample circuit B2, sample circuit B3, control circuit C1, control circuit C2, control circuit C3, drive circuit D1, drive circuit D2, control chip module DSP(E1, E2), man-machine interface circuit and clocked storage circuit; Described sample circuit B1, sample circuit B2 sampling direct current voltage signal; Described sample circuit B3 gathers alternating voltage, electric current and the frequency signal that inversion exports; The relay Drive and Control Circuit that described control circuit C1, control circuit C2, control circuit C3 are made up of triode forms; Described drive circuit D1, drive circuit D2 are isolated by optocoupler signal and amplifying circuit forms; Described control chip module DSP(E1, E2) be made up of two CSTR chip TMS320F28035, two chip chambers adopt SPI communication handshake data, described control chip DSPE1 completes the controlling functions of DC/DC conversion fraction, and control chip DSPE2 completes the function of DC/AC conversion fraction; Described man-machine interface circuit comprises key-press input initialization circuit and display circuit; Described clocked storage circuit comprises clock and storage chip.
Preferably, described change over switch A1 comprises common port and two contacts 1-1,1-2, and common port is connected with DC/DC translation circuit, and contact 1-1 is connected with generation of electricity by new energy output, and contact 1-2 is connected with energy-storage system; Described change over switch A2 is made up of two relay assemblies, an equivalence common port and three tip sides 2-1,2-2,2-3, common port is connected with DC/DC translation circuit, tip side 2-1 is connected with energy storage filter circuit inductance end, tip side 2-2 is connected with energy storage filtering circuit capacitor end, and tip side 2-3 is connected with energy-storage system.
The beneficial effects of the utility model are: the utility model can work in various modes, meet the demand of different application occasion.
Accompanying drawing explanation
Fig. 1 is the system principle block diagram of a kind of schedulable formula of the utility model bimodulus inverter;
Fig. 2 is the schematic diagram of the main circuit diagram of shown a kind of schedulable formula bimodulus inverter;
Fig. 3 is main circuit generation of electricity by new energy charge mode equivalent circuit diagram in a kind of embodiment of shown a kind of schedulable formula bimodulus inverter;
Fig. 4 is main circuit grid charging mode of operation equivalent circuit diagram in a kind of embodiment of shown a kind of schedulable formula bimodulus inverter;
Fig. 5 be in a kind of embodiment of shown a kind of schedulable formula bimodulus inverter main circuit from net mode of operation equivalent circuit diagram;
Fig. 6 is the grid-connected mode of operation equivalent circuit diagram of main circuit in a kind of embodiment of shown a kind of schedulable formula bimodulus inverter;
In accompanying drawing, the mark of each parts is as follows: 1, main circuit module; 2, control circuit module; 3, energy-storage system; 4, generation of electricity by new energy output; 5, electrical network; 6, local load; 11, DC/DC translation circuit; 12, energy storage filter circuit; 13, DC/AC inverter circuit; 21, man-machine interface circuit; 22, clocked storage circuit; 23, other circuit.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, to make advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus more explicit defining is made to protection range of the present utility model.
Refer to Fig. 1 to Fig. 6, the utility model embodiment comprises:
A kind of schedulable formula bimodulus inverter, as shown in Figure 1, 2, schedulable formula bimodulus inverter be connected to generation of electricity by new energy output 4, energy-storage system 3, between electrical network 5 and local load 6; Generation of electricity by new energy output 4 is for adopting solar energy power generating form, and solar cell exports electric energy after diode D0; A kind of schedulable formula of the utility model bimodulus inverter comprises: main circuit module 1 and control circuit module 2; Described main circuit module 1 comprises change over switch A1, change over switch A2, change over switch A3, DC/DC translation circuit 11, energy storage filter circuit 12 and DC/AC inverter circuit 13; Described DC/DC translation circuit 11 is Zeta/Sepic reversible transducers, be made up of electric capacity C1, switching tube VS1, inductance L 1, electric capacity C2, switching tube VS2, inductance L 2, electric capacity C3, under Zeta transducer status can be worked in, under can working in Sepic transducer status again, realize the two-way flow of power; Described DC/AC inverter circuit 13 is made up of 4 full bridge inverters that control switching tube forms entirely; Described change over switch A1 is made up of relay S1, and comprise common port and two contacts 1-1,1-2, common port is connected with DC/DC translation circuit 11, and contact 1-1 is connected with generation of electricity by new energy output 4, and contact 1-2 is connected with energy-storage system 3; Described change over switch A2 is made up of two relay assemblies, an equivalence common port and three tip sides 2-1,2-2,2-3, wherein common port is connected with DC/DC translation circuit 11, tip side 2-1 is connected with energy storage filter circuit 12 inductance end, tip side 2-2 is connected with energy storage filter circuit 12 capacitance terminal, and tip side 2-3 is connected with energy-storage system 3; Described change over switch A3 is made up of two relay assemblies; Described change over switch A3 common port is connected with DC/AC inverter circuit 13, and output is connected with local load 6 with electrical network 5 respectively; Energy storage filter circuit 12 is made up of inductance L 3 and electric capacity C4, C5, filtering mode can be determined without operational mode state according to circuit, namely be inductor filter mode during make contact 2-1, it is capacitor filtering mode during make contact 2-2, wherein preferential employing inductor filter mode under grid-connected mode of operation, adopts capacitor filtering mode preferential under net pattern.
See Fig. 3, for a kind of embodiment main circuit generation of electricity by new energy charge mode equivalent circuit diagram of the present utility model, photovoltaic generation output is connected with the equivalent inpnt end of DC/DC translation circuit 11 by change over switch A1, the equivalent output of DC/DC translation circuit 11 is connected with energy-storage system 3 by change over switch A2, and the electric energy that now generation of electricity by new energy exports transmits electric energy through DC/DC translation circuit 11 to energy-storage system 3 forward.
See Fig. 4, for a kind of embodiment main circuit grid charging mode of operation equivalent circuit diagram of the present utility model, energy-storage system 3 is connected with the equivalent output of DC/DC translation circuit 11 by change over switch A1, electrical network end is connected with by the end that exchanges of DC/AC inverter circuit 13 by change over switch A3, the DC terminal of DC/AC inverter circuit 13 is connected with the equivalent inpnt end of DC/DC translation circuit 11 through the capacitor filter of energy storage filter circuit 12 by change over switch A2, and now the electric energy of electrical network 5 is to energy-storage system 3 boost charge.
See Fig. 5, for a kind of embodiment main circuit of the present utility model is from net mode of operation equivalent circuit diagram; Energy-storage system 3 is connected with the equivalent inpnt end of DC/DC translation circuit 11 by change over switch A1, the equivalent output of DC/DC translation circuit 11 is connected with the capacitor filter of filter circuit 12 by change over switch A2, the interchange end of DC/AC inverter circuit 13 is connected with load end by change over switch A3, and now circuit is to carry out work from net pattern.
See Fig. 6, for the grid-connected mode of operation equivalent circuit diagram of a kind of embodiment main circuit of the present utility model, generation of electricity by new energy output 4 is connected with the equivalent inpnt end of DC/DC translation circuit 11 by change over switch A1, the equivalent output of DC/DC translation circuit 11 is connected with the inductor filter circuit of energy storage filter circuit 12 by change over switch A2, the interchange end of DC/AC inverter circuit 13 is connected with by electrical network 5 by change over switch A3, and now circuit carries out work with grid-connect mode.
Described control circuit module comprises sample circuit B1, sample circuit B2, sample circuit B3, control circuit C1, control circuit C2, control circuit C3, drive circuit D1, drive circuit D2, control chip module DSP(E1, E2), man-machine interface circuit 21, clocked storage circuit 22 and other circuit 23; Described sample circuit B1, sample circuit B2 sampling direct current voltage signal; Described sample circuit B3 gathers alternating voltage, electric current and the frequency signal that inversion exports; The relay Drive and Control Circuit that described control circuit C1, control circuit C2, control circuit C3 are made up of triode forms; Described drive circuit D1, drive circuit D2 are isolated by optocoupler signal and amplifying circuit forms; Described control chip module DSP(E1, E2) be made up of two CSTR chip TMS320F28035, two chip chambers adopt SPI communication handshake data, described control chip DSPE1 completes the controlling functions of DC/DC conversion fraction, and control chip DSPE2 completes the function of DC/AC conversion fraction; Described man-machine interface circuit 21 comprises key-press input initialization circuit and display circuit, can set the input information such as running parameter and pattern of inverter, and carry out output display to the relevant parameter of inverter; Described clocked storage circuit 22 comprises by clock and storage chip, provides inverter real-time working clock and preserves the data message of inverter.
The utility model organizes change over switch by adopting more, in conjunction with DC/DC two-way changing and PWM rectify control technology, can be realized the multiple-working mode of inverter by a set of main circuit, meet the various working operation demand of inverter, realize its schedulable function; Meanwhile, adopt two CSTR division of labor control strategy, control efficiency and reliability can be improved, adopt control method flexibly, realize one-machine-multi-function, drastically increase complete machine cost performance and the cost reducing inverter.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims (3)

1. a schedulable formula bimodulus inverter, is characterized in that, comprising: main circuit module and control circuit module; Described main circuit module comprises change over switch A1, change over switch A2, change over switch A3, DC/DC translation circuit, energy storage filter circuit and DC/AC inverter circuit; Described change over switch A1 is made up of single relay, and described change over switch A2 is made up of two relay assemblies, and described change over switch A3 is made up of two relay assemblies; Described DC/DC translation circuit is made up of bidirectional, dc transformation resistance; The combined filter circuit that described energy storage filter circuit is made up of inductance L and electric capacity C forms; Described DC/AC inverter circuit is made up of 4 full bridge inverters that control switching tube forms entirely; Described change over switch A1 common port is connected with DC/DC translation circuit, and two tip sides are connected with energy-storage system with generation of electricity by new energy output respectively; Described change over switch A2 common port is connected with DC/DC translation circuit, and two tip sides are connected with energy-storage system with energy storage filter circuit respectively; Described change over switch A3 common port is connected with DC/AC inverter circuit, and output is connected with local load with electrical network respectively.
2. a kind of schedulable formula bimodulus inverter according to claim 1, is characterized in that: described control circuit module comprises sample circuit B1, sample circuit B2, sample circuit B3, control circuit C1, control circuit C2, control circuit C3, drive circuit D1, drive circuit D2, control chip module DSP(E1, E2), man-machine interface circuit and clocked storage circuit; Described sample circuit B1, sample circuit B2 sampling direct current voltage signal; Described sample circuit B3 gathers alternating voltage, electric current and the frequency signal that inversion exports; The relay Drive and Control Circuit that described control circuit C1, control circuit C2, control circuit C3 are made up of triode forms; Described drive circuit D1, drive circuit D2 are isolated by optocoupler signal and amplifying circuit forms; Described control chip module DSP(E1, E2) be made up of two CSTR chip TMS320F28035, two chip chambers adopt SPI communication handshake data, described control chip DSPE1 completes the controlling functions of DC/DC conversion fraction, and control chip DSPE2 completes the function of DC/AC conversion fraction; Described man-machine interface circuit comprises key-press input initialization circuit and display circuit; Described clocked storage circuit comprises clock and storage chip.
3. a kind of schedulable formula bimodulus inverter according to claim 1, it is characterized in that: described change over switch A1 comprises common port and two contacts 1-1,1-2, common port is connected with DC/DC translation circuit, contact 1-1 is connected with generation of electricity by new energy output, and contact 1-2 is connected with energy-storage system; Described change over switch A2 is made up of two relay assemblies, an equivalence common port and three tip sides 2-1,2-2,2-3, common port is connected with DC/DC translation circuit, tip side 2-1 is connected with energy storage filter circuit inductance end, tip side 2-2 is connected with energy storage filtering circuit capacitor end, and tip side 2-3 is connected with energy-storage system.
CN201420711906.XU 2014-11-25 2014-11-25 A kind of schedulable formula bimodulus inverter Expired - Fee Related CN204333973U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104467011A (en) * 2014-11-25 2015-03-25 苏州市职业大学 Schedulable dual-mode inverter and control method of schedulable dual-mode inverter
CN105098836A (en) * 2015-09-01 2015-11-25 河北工业大学 Micro isolated grid-connected and off-grid inverter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104467011A (en) * 2014-11-25 2015-03-25 苏州市职业大学 Schedulable dual-mode inverter and control method of schedulable dual-mode inverter
CN105098836A (en) * 2015-09-01 2015-11-25 河北工业大学 Micro isolated grid-connected and off-grid inverter

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150513

Termination date: 20151125