CN108667134A - A kind of power supply circuit and method - Google Patents
A kind of power supply circuit and method Download PDFInfo
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- CN108667134A CN108667134A CN201710199267.1A CN201710199267A CN108667134A CN 108667134 A CN108667134 A CN 108667134A CN 201710199267 A CN201710199267 A CN 201710199267A CN 108667134 A CN108667134 A CN 108667134A
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000012806 monitoring device Methods 0.000 claims description 25
- 238000004146 energy storage Methods 0.000 claims description 20
- 238000012544 monitoring process Methods 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 10
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- 238000010586 diagram Methods 0.000 description 17
- 238000012545 processing Methods 0.000 description 11
- 239000003990 capacitor Substances 0.000 description 9
- 238000004590 computer program Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
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- 238000005286 illumination Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
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- 238000004364 calculation method Methods 0.000 description 1
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Classifications
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- 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
- H02J11/00—Circuit arrangements for providing service supply to auxiliaries of stations in which electric power is generated, distributed or converted
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- H02J3/383—
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
The embodiment of the invention discloses a kind of power supply circuit, the circuit includes：Power supply module, first input end, the second input terminal and output end；Wherein：The power supply module, for obtaining externally fed signal by the first input end or obtaining in-line power signal by second input terminal, and analyze the externally fed signal or the in-line power signal obtains voltage output signal, and exported by the output end；Wherein, the externally fed signal is provided by externally fed power supply, and the in-line power information is provided by internal power supply.The embodiment of the present invention also discloses a kind of method of supplying power to simultaneously.
Description
Technical field
The present invention relates in Design of grid-connected photovoltaic inverter field power supply technique more particularly to a kind of power supply circuit and side
Method.
Background technology
Solar grid-connected inverter be mainly used in regenerative resource grid-connected system, off-network type village power supply system and
In user's power-supply system, and communication, traffic, the street lighting etc. that can also extend the area in hardship for power grid provide electric power branch
It holds.With the continuous increase of photovoltaic installed capacity, in electric network fault, photovoltaic generation brings sternness to the stable operation of power grid
Challenge.In existing scheme, the challenge is mainly solved using photovoltaic parallel in system low voltage crossing technology.Photovoltaic parallel in system
Maximum difficult point is exactly low voltage crossing (Low Voltage Ride Through, LVRT) ability skill in low voltage crossing technology
Art directly affects the large-scale application of photovoltaic generation.
In photovoltaic parallel in system low voltage crossing technology, common photovoltaic DC-to-AC converter auxiliary power supply mode is single outside
Power supply-mains-supplied does not have the area of alternating current or the unstable area of alternating current at some, leads to grid-connected low voltage crossing
Power supply system cisco unity malfunction, the convenience for reducing the selectivity of user and using.
Invention content
In order to solve the above technical problems, an embodiment of the present invention is intended to provide a kind of power supply circuit and method, solve existing
The relatively simple problem of the auxiliary power supply mode of photovoltaic DC-to-AC converter in technology, realizes and uses a variety of auxiliary power supply modes for photovoltaic
Inverter is powered, and be ensure that the normal work of the power supply system of grid-connected low voltage crossing, is extended power supply plan.
In order to achieve the above objectives, the technical solution of the embodiment of the present invention is realized in：
A kind of power supply circuit, the power supply circuit include：Power supply module, first input end, the second input terminal and output end；
Wherein：
The power supply module, for obtaining externally fed signal or defeated by described second by the first input end
Enter end and obtain in-line power signal, and analyzes the externally fed signal or the in-line power signal obtains voltage output letter
Number, and exported by the output end；Wherein, the externally fed signal is provided by externally fed power supply, the in-line power
Information is provided by internal power supply.
Optionally, the power supply module includes：First switch, second switch, A.C. contactor and the first power frequency become electric appliance；
Wherein：
The first input end of the first switch and the second input terminal are connect with the first input end of the power supply circuit, institute
The first output end for stating first switch is connect with the first input end of the A.C. contactor, the second output of the first switch
End is connect with the second input terminal of the A.C. contactor；
The first input end of the second switch and the second input terminal are connect with the second input terminal of the power supply circuit, institute
The first output end for stating second switch is connect with the third input terminal of the A.C. contactor, the second output of the second switch
End is connect with the 4th input terminal of the A.C. contactor；
The first input end that first output end of the A.C. contactor becomes electric appliance with first power frequency is connect, the friendship
The second output terminal for flowing contactor is connect with the second input terminal of first power frequency change electric appliance, the third of the A.C. contactor
Output end also with first power frequency become electric appliance first input end connect, the 4th output end of the A.C. contactor with it is described
First power frequency becomes the third input terminal connection of electric appliance；
The output end that first power frequency becomes electric appliance is connect with the output end of the power supply circuit.
Optionally, the first switch passes through described the of the power supply circuit for when the first switch is closed
One input terminal receives the externally fed signal, and sends the externally fed signal to described the by the A.C. contactor
One power frequency becomes electric appliance；
The second switch, for when the second switch is closed, being terminated by the second input of the power supply circuit
The in-line power signal is received, and the in-line power signal is sent to the first power frequency power transformation by the A.C. contactor
Device；
First power frequency becomes electric appliance, for the externally fed signal or the in-line power signal to be carried out voltage
It is converted to the voltage output signal, and the voltage output signal is exported by the output end of the power supply circuit；Wherein,
First power frequency becomes the output end of electric appliance, and by the output end output of the power supply circuit, at least the voltage output is believed all the way
Number.
Optionally, the power supply module further includes：Energy-saving relay and the second power frequency become electric appliance；Wherein：
The first input end of the energy-saving relay is connect with the first output end of the A.C. contactor, it is described it is energy saving after
The first input end of electric appliance is also connect with the third output end of the A.C. contactor, the second input terminal of the energy-saving relay
It is connect with the second output terminal of the A.C. contactor, the first output end of the energy-saving relay and the second power frequency power transformation
The first input end of device connects, and the second output terminal of the energy-saving relay becomes the second input terminal of electric appliance with second power frequency
Connection, the third input terminal and the 4th input terminal of the energy-saving relay are connect with power supply signal；
The third input terminal that second power frequency becomes electric appliance is connect with the 4th output end of the A.C. contactor, and described the
The output end that two power frequencies become electric appliance is connect with the output end of the power supply circuit.
Optionally, the energy-saving relay, for when receiving the power supply signal, controlling the second power frequency power transformation
The state of device；
Second power frequency becomes electric appliance, for receiving the externally fed signal or the in-line power signal, to institute
It states externally fed signal or the in-line power signal carries out voltage conversion, obtain the voltage control signal and be sent to institute
State the output end of power supply circuit；Wherein, the output end of the second power frequency change electric appliance is defeated by the output end of the power supply circuit
Go out voltage output signal described at least three tunnels.
Optionally, the power supply circuit further includes power supply receiving module, wherein the power supply receiving module includes：Monitoring
Module, auxiliary circuit module and control module；Wherein：
The monitoring module, the voltage output signal that the output end for receiving the power supply circuit exports, and it is right
The voltage output signal is analyzed to obtain first voltage signal, and exports the first voltage signal to the energy saving relay
Device；
The auxiliary circuit module, the voltage output signal that the output end for receiving the power supply circuit exports,
The voltage output signal is analyzed, second voltage signal is obtained；
The control module, the voltage output signal that the output end for receiving the power supply circuit exports, to institute
It states voltage output signal to be analyzed, obtains tertiary voltage signal；Wherein, the first voltage signal, second voltage letter
It is number different with the tertiary voltage signal.
Optionally, the monitoring module includes：First AC-DC converter, first resistor, the first capacitance, the one or two
Pole pipe, the first DC-DC converter and monitoring device；Wherein：
The input terminal of first AC-DC converter is connect with the output end of the power supply circuit, and described first hands over
First output end of stream-direct current transducer is connect with the first end of the first resistor, first AC-DC converter
First output end is also connect with the cathode of first diode, the second output terminal of first AC-DC converter with
The first end of first capacitance connects, the second output terminal of first AC-DC converter also with first direct current-
Second input terminal of DC converter connects；
The second end of the first resistor is connect with the anode of first diode, and the second end of the first resistor is also
It is connect with the second end of first capacitance；
The cathode of first diode is connect with the first input end of first DC-DC converter；
The output end of first DC-DC converter is connect with the input terminal of the monitoring device；
The output end of the monitoring device is connect with the third input terminal of the energy-saving relay and the 4th input terminal.
Optionally, the auxiliary circuit module includes：Second AC-DC converter, second resistance, the second capacitance,
Two diodes and system auxiliary circuit；Wherein：
The input terminal of second AC-DC converter is connect with the output end of the power supply circuit, and described second hands over
First output end of stream-direct current transducer is connect with the first end of the second resistance, second AC-DC converter
First output end is also connect with the cathode of second diode, the second output terminal of second AC-DC converter with
The first end of second capacitance connects, and the second output terminal of second AC-DC converter is also assisted with the system
Second input terminal of circuit connects；
The second end of the second resistance is connect with the anode of second diode, and the second end of the second resistance is also
It is connect with the second end of second capacitance；
The cathode of second diode is connect with the first input end of the system auxiliary circuit.
Optionally, the control module includes：Third AC-DC converter, 3rd resistor, third capacitance, the three or two
Pole pipe, the second DC-DC converter and at least one A.C. contactor；Wherein：
The input terminal of the third AC-DC converter is connect with the output end of the power supply circuit, and the third is handed over
First output end of stream-direct current transducer is connect with the first end of the 3rd resistor, the third AC-DC converter
First output end is also connect with the cathode of the third diode, the second output terminal of the third AC-DC converter with
The first end of the third capacitance connects, the second output terminal of the third AC-DC converter also with second direct current-
Second input terminal of DC converter connects；
The second end of the 3rd resistor is connect with the anode of the third diode, and the second end of the 3rd resistor is also
It is connect with the second end of second capacitance；
The cathode of the third diode is connect with the first input end of second DC-DC converter；
The output end of second DC-DC converter is connect with the input terminal of at least one A.C. contactor.
A kind of method of supplying power to, the method includes：
Obtain power supply signal；Wherein, the power supply signal include the externally fed signal provided by externally fed power supply or
The in-line power signal that person's internal power supply provides；
The power supply signal is analyzed, voltage output signal is obtained and is exported.
Optionally, described that the power supply signal is analyzed, it obtains voltage output signal and exports, including：
Voltage conversion is carried out to the power supply signal, first voltage output signal is obtained and exports；Wherein, first electricity
It includes at least voltage output signal all the way to press output signal.
Optionally, described that the power supply signal is analyzed, it obtains voltage output signal and exports, further include：
Receive power supply signal；
According to the power supply signal, voltage is carried out to the power supply signal and is converted to second voltage output signal and defeated
Go out；Wherein, the second voltage output signal includes voltage output signal described at least three tunnels.
Optionally, the method further includes：
When the first voltage output signal received meets preset condition, to the first voltage output signal into
Row AC-DC signal is converted to the first signal, and stores and obtain the first energy storage signal；
DC-DC signal is carried out to first signal and is converted to first voltage signal；Wherein, the power supply signal
Including the first voltage signal.
Optionally, the method further includes：
When the first voltage output signal received is unsatisfactory for preset condition, the first energy storage signal is carried out
DC-DC signal is converted to the first voltage signal.
Optionally, the method further includes：
When the second voltage output signal received meets preset condition, to the second voltage output signal into
Row AC-DC signal is converted to second signal, and stores and obtain the second energy storage signal；
DC-DC signal is carried out to the second signal and is converted to second voltage signal；
AC-DC signal is carried out to the second voltage output signal and is converted to tertiary voltage signal, and is stored
To third energy storage signal, exports the third signal and obtain tertiary voltage signal.
Optionally, the method further includes：
When the second voltage output signal received is unsatisfactory for preset condition, the second energy storage signal is carried out
DC-DC signal is converted to the second voltage signal；
It exports the third energy storage signal and obtains the tertiary voltage signal.
The power supply circuit and method that the embodiment of the present invention is provided, by first input end obtain externally fed signal or
Person obtains in-line power signal by the second input terminal, and analyze externally fed signal or in-line power signal to obtain voltage defeated
Go out signal, and is exported by output end；In this way, user can select externally fed signal or internal confession according to the demand of oneself
Electric signal is photovoltaic DC-to-AC converter power supply, and the auxiliary power supply mode for solving photovoltaic DC-to-AC converter in the prior art relatively simple is asked
Topic, realizes and a variety of auxiliary power supply modes is used to be powered for photovoltaic DC-to-AC converter, ensure that grid-connected low voltage crossing
The normal work of power supply system, extends power supply plan.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of power supply circuit provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of another power supply circuit provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of another power supply circuit provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of another power supply circuit provided in an embodiment of the present invention；
Fig. 5 is a kind of structural schematic diagram of monitoring module provided in an embodiment of the present invention；
Fig. 6 is a kind of structural schematic diagram of auxiliary circuit module provided in an embodiment of the present invention；
Fig. 7 is a kind of structural schematic diagram of control module provided in an embodiment of the present invention；
Fig. 8 is a kind of structural schematic diagram for power supply circuit that further embodiment of this invention provides；
Fig. 9 is a kind of flow diagram of method of supplying power to provided in an embodiment of the present invention；
Figure 10 is the flow diagram of another method of supplying power to provided in an embodiment of the present invention；
Figure 11 is the flow diagram of another method of supplying power to provided in an embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes.
A kind of power supply circuit that the embodiment of the present invention provides is applied to the power supply system of grid-connected low voltage crossing
In, shown referring to Fig.1, which includes：Power supply module 11, first input end 12, the second input terminal 13 and output end 14,
In：
Power supply module 11, for passing through the acquisition externally fed signal of first input end 12 or being obtained by the second input terminal 13
In-line power signal is taken, and analyzes externally fed signal or in-line power signal obtains voltage output signal, and passes through output
14 output of end.
Wherein, externally fed signal is provided by externally fed power supply, and in-line power information is provided by internal power supply.
Specifically, the electric signal that externally fed signal can be exported with right and wrong photovoltaic DC-to-AC converter, such as can be alternating current, it is internal
Power supply signal can be the electric signal of generating equipment output corresponding with the power supply system of grid-connected low voltage crossing, such as can
Be grid-connected low voltage crossing power supply system in the regenerative resources grid-connected system output such as photovoltaic apparatus electricity
Signal provides the power supply mode of selectable circuit system in this way.
The power supply circuit that the embodiment of the present invention is provided obtains externally fed signal by first input end or passes through
Second input terminal obtains in-line power signal, and analyzes externally fed signal or in-line power signal obtains voltage output letter
Number, and exported by output end；In this way, user can select externally fed signal or in-line power to believe according to the demand of oneself
It number powers for photovoltaic DC-to-AC converter, solves the problems, such as that the auxiliary power supply mode of photovoltaic DC-to-AC converter in the prior art is relatively simple, it is real
Show and a variety of auxiliary power supply modes is used to be powered for photovoltaic DC-to-AC converter, ensure that the power supply system of grid-connected low voltage crossing
The normal work of system, extends power supply plan.
Specifically, with reference to shown in Fig. 2, which includes：First switch 111, second switch 112, ac contactor
Device 113 and the first power frequency become electric appliance 114, wherein：
The first input end 12 of the first input end of first switch 111 and the second input terminal and power supply circuit connects, and first
First output end of switch 111 is connect with the first input end of A.C. contactor 113, the second output terminal of first switch 111 with
Second input terminal of A.C. contactor 113 connects.
First switch 111, for when first switch 111 is closed, being received by the first input end 12 of power supply circuit outer
Portion's power supply signal, and externally fed signal to the first power frequency is sent by A.C. contactor 113 and becomes electric appliance 114.
Second input terminal 12 of the first input end of second switch 112 and the second input terminal and power supply circuit connects, and second
First output end of switch 112 is connect with the third input terminal of A.C. contactor 113, the second output terminal of second switch 112 with
4th input terminal of A.C. contactor 113 connects.
Second switch 112, for when second switch 112 is closed, being received by the second input terminal 12 of power supply circuit interior
Portion's power supply signal, and in-line power signal to the first power frequency is sent by A.C. contactor 113 and becomes electric appliance 114.
The first input end that first output end of A.C. contactor 113 becomes electric appliance 114 with the first power frequency is connect, ac contactor
The second input terminal that the second output terminal of device 113 becomes electric appliance 114 with the first power frequency is connect, the third output of A.C. contactor 113
The first input end that end also becomes electric appliance 114 with the first power frequency is connect, and the 4th output end of A.C. contactor 113 and the first power frequency become
The third input terminal of electric appliance 114 connects.
Wherein, between the first input end of A.C. contactor and the first output end and the second input terminal and second output terminal it
Between it is corresponding be A.C. contactor normally open end, between the third input terminal and third output end of A.C. contactor and the 4th input
End it is corresponding between the 4th output end be A.C. contactor normal-closed end.
Due to first input end be connect with externally fed signal, the second input terminal is connect with in-line power signal,
So user can select externally fed signal or closure second switch choosing according to the demand of oneself by being closed first switch
Select in-line power signal.When user selects externally fed signal, it is closed first switch and disconnects second switch, at this point, external
The normally open end that power supply signal controls A.C. contactor is closed, and the normal-closed end of A.C. contactor disconnects, and is worn for grid-connected low-voltage
Power supply system more accesses externally fed signal；Or when user selects in-line power signal, disconnects first switch and be closed the
Two switches, at this point, the normally open end of in-line power signal control A.C. contactor remains open, the normal-closed end of A.C. contactor is closed
State, be grid-connected low voltage crossing power supply system access in-line power signal.
14 (not shown) of output end for the output end and power supply circuit that first power frequency becomes electric appliance 114 connects.
First power frequency becomes electric appliance 114, is converted to for externally fed signal or in-line power signal to be carried out voltage
Voltage output signal, and pass through 14 output voltage output signal of the output end of power supply circuit.
Wherein, the first power frequency becomes the output end of electric appliance 114 and passes through the output end 14 of power supply circuit output at least voltage all the way
Output signal.
First power frequency become electric appliance the externally fed signal received or in-line power signal can be carried out from high pressure to
It is exported after the transformation processing of low pressure, specific voltage output signal can become the electricity consumption that electrical output terminal is connect according to the first power frequency
Circuit branch quantity determines.
Specifically, being based on previous embodiment, with reference to shown in Fig. 3, which further includes：115 He of energy-saving relay
Second power frequency becomes electric appliance 116 wherein：
The first input end of energy-saving relay 115 is connect with the first output end of A.C. contactor 113, energy-saving relay
115 first input end is also connect with the third output end of A.C. contactor 113, the second input terminal of energy-saving relay 115 with
The second output terminal of A.C. contactor 113 connects, and the first output end of energy-saving relay 115 and the second power frequency become electric appliance 116
First input end connects, and the second input terminal that the second output terminal of energy-saving relay 115 becomes electric appliance 116 with the second power frequency is connect,
The third input terminal and the 4th input terminal of energy-saving relay 115 are connect with power supply signal.
Energy-saving relay 115, for when receiving power supply signal, the second power frequency of control to become the state of electric appliance 116.
Wherein, the working condition of energy-saving relay can be controlled by monitoring device with software approach.In order to realize
The autophage of photovoltaic inverter system in the power supply system of grid-connected low voltage crossing, a few thing circuit can at night
To be stopped, outside environmental elements are obtained by monitoring device, and to the outside environmental elements of acquisition and default environmental factor
It is compared judgement.Such as monitoring device obtains the intensity of illumination of external environment, to the intensity of illumination of the external environment of acquisition with
Default intensity of illumination threshold value is compared, and determines whether current outside environment is night, if it is determined that current outside environment is night
Evening, then control instruction of the monitoring device for sending out the operating voltage for disconnecting energy-saving relay, disconnects the work of energy-saving relay
Voltage, in this way, realizing that the second power frequency of energy-saving relay pair becomes the control of the state of electric appliance.Second power frequency become electric appliance state include
It further includes stopping to external power supply signal or interior that external power supply signal, either in-line power signal, which carries out voltage transition status,
Portion's power supply signal carries out voltage transition status.
The third input terminal that second power frequency becomes electric appliance 116 is connect with the 4th output end of A.C. contactor 113, the second power frequency
The output end 14 of the output end and power supply circuit that become electric appliance 116 connects.
Second power frequency becomes electric appliance 116, for receiving externally fed signal or in-line power signal, to external power supply signal
Or in-line power signal carries out voltage conversion, obtains voltage control signal and is sent to the output end 14 of power supply circuit.
Wherein, the output end of the second power frequency change electric appliance 116 passes through the output of the output end 14 at least three road voltages of power supply circuit
Output signal.
Second power frequency becomes electric appliance can receive externally fed signal or in-line power signal by energy-saving relay, and
Low pressure can be carried out to external power supply signal or in-line power signal to handle to the transformation of high pressure, then export, it is specific defeated
Go out the power circuit branch quantity that signal way can be connect by the output end for becoming electric appliance with the second power frequency to determine.
In this way, the working condition of energy-saving relay can be controlled by monitoring programme according to external environment, night is determined
When the second power frequency become electric appliance and stop output voltage signal, so becoming the power circuit branch that connect of output end of electric appliance with the second power frequency
Road is stopped, and photovoltaic inverter system when reducing night in the power supply system of grid-connected low voltage crossing itself disappears
Consumption.
Specifically, with reference to shown in Fig. 4, which further includes power supply receiving module 15, wherein the power supply receiving module
15 include：Monitoring module 151, auxiliary circuit module 152 and control module 153, wherein：
Monitoring module 151, the voltage output signal that the output end 14 for receiving power supply circuit exports, and to voltage output
Signal is analyzed to obtain first voltage signal, and exports first voltage signal to energy-saving relay 115.
Auxiliary circuit module 152, the voltage output signal that the output end 14 for receiving power supply circuit exports are defeated to voltage
Go out signal to be analyzed, obtains second voltage signal.
Control module 153, the voltage output signal that the output end 14 for receiving power supply circuit exports, believes voltage output
It number is analyzed, obtains tertiary voltage signal.
Wherein, first voltage signal, second voltage signal and tertiary voltage signal are different.
First voltage signal can be with needed for the monitoring device system in the power supply system of grid-connected low voltage crossing
The d. c. voltage signal of voltage matches；Second voltage signal can be with the power supply system of grid-connected low voltage crossing
The d. c. voltage signal for voltage matches needed for auxiliary circuit of uniting；Tertiary voltage signal can be and grid-connected low voltage crossing
The matched voltage signal of power supply needed for external at least one A.C. contactor in power supply system.
Specifically, being based on previous embodiment, referring to Figure 5, which includes：First AC-DC is converted
Device 1511, first resistor 1512, the first capacitance 1513, the first diode 1514, the first DC-DC converter 1515 and monitoring
Equipment 1516, with reference to shown in Fig. 6, which includes：Second AC-DC converter 1521, second resistance
1522, the second capacitance 1523, the second diode 1524 and system auxiliary circuit 1525, with reference to shown in Fig. 7, the control module 153
Including：Third AC-DC converter 1531,3rd resistor 1532, third capacitance 1533, third diode 1534, second are straight
Stream-DC converter 1535 and at least one A.C. contactor 1536, wherein：
The input terminal of first AC-DC converter 1511 and the output end 14 of power supply circuit connect, the first AC-DC
First output end of converter 1511 is connect with the first end of first resistor 1512, and the of the first AC-DC converter 1511
One output end is also connect with the cathode of the first diode 1514, the second output terminal of the first AC-DC converter 1511 and the
The first end of one capacitance 1513 connects, and the second output terminal of the first AC-DC converter 1511 also becomes with the first DC-DC
Second input terminal of parallel operation 1515 connects.
The second end of first resistor 1512 is connect with the anode of the first diode 1514, and the second end of first resistor 1512 is also
It is connect with the second end of the first capacitance 1513.
The cathode of first diode 1514 is connect with the first input end of the first DC-DC converter 1515.
The output end of first DC-DC converter 1515 is connect with the input terminal of monitoring device 1516.
The output end of monitoring device 1516 is connect with the third input terminal of energy-saving relay 115 and the 4th input terminal.
Specifically, as shown in Figure 8, the third of the first output end and the energy-saving relay in power supply module of monitoring device
Input terminal connects, and the second output terminal of monitoring device and the 4th input terminal of energy-saving relay connect.
Wherein, with reference to shown in Fig. 8, the input terminal of the first AC-DC converter can become the defeated of electric appliance with the first power frequency
Outlet U1 connections.In this way, externally fed signal or in-line power signal carry out exchange through the first AC-DC converter and turn straight
Stream signal processing obtains the first signal, and the first direct current signal gives the first capacitor charging after first resistor current limliting, and to that will obtain
The first direct current signal be sent to the first DC-DC converter carry out high-voltage dc signal turn the signals such as low-voltage dc signal turn
Processing is changed, the voltage signal with voltage matches needed for monitoring device is obtained, then monitoring device can control whether output voltage
Signal is to energy-saving relay, in order to which monitoring device controls energy-saving relay.Wherein, the effect of the first diode be for
Prevent the first direct current signal obtained from, just to the first capacitor charging, making first that the first capacitance receives without first resistor
Direct current signal too big (i.e. the momentary charge electric current that the first capacitance receives is excessive) causes the damage of the first capacitance.It should be noted
It is that, when the power supply system low voltage crossing of grid-connected low voltage crossing, the outside that the first AC-DC converter receives supplies
Electric signal or in-line power signal are less than predetermined threshold value, at this point, the first capacitance can provide power supply to monitoring device, keep prison
Control the normal work of the loads such as equipment.
The input terminal of second AC-DC converter 1521 and the output end 14 of power supply circuit connect, the second AC-DC
First output end of converter 1521 is connect with the first end of second resistance 1522, and the of the second AC-DC converter 1521
One output end is also connect with the cathode of the second diode 1524, the second output terminal of the second AC-DC converter 1521 and the
The first ends of two capacitances 1523 connects, the second output terminal of the second AC-DC converter 1521 also with system auxiliary circuit
1525 the second input terminal connection.
The second end of second resistance 1522 is connect with the anode of the second diode 1524, and the second end of second resistance 1522 is also
It is connect with the second end of the second capacitance 1523.
The cathode of second diode 1524 is connect with the first input end of system auxiliary circuit 1525.
Wherein, with reference to shown in Fig. 8, the input terminal of the second AC-DC converter can become the of electric appliance with the second power frequency
One output end U2 connections.In this way, externally fed signal or in-line power signal are exchanged through the second AC-DC converter
Turn direct current signal processing after after second resistance current limliting give the second capacitor charging, and export to grid-connected low voltage crossing confession
In the system auxiliary circuit of electric system, wherein the effect of the second diode is to turn in order to prevent through the second AC-DC converter
The direct current signal obtained after processing is changed without second resistance just to the second capacitor charging, the direct current that the second capacitance receives is made to believe
The damage of the second capacitance number is caused very much greatly.It should be noted that when the power supply system low voltage crossing of grid-connected low voltage crossing
When, externally fed signal or in-line power signal that the second AC-DC converter receives are less than predetermined threshold value, at this point, the
Two capacitances can provide power supply to the system auxiliary circuit of the power supply system of grid-connected low voltage crossing, keep grid-connected low
The normal work of the power supply system of voltage ride-through.
The input terminal of third AC-DC converter 1531 and the output end 14 of power supply circuit connect, third AC-DC
First output end of converter 1531 is connect with the first end of 3rd resistor 1532, and the of third AC-DC converter 1531
One output end is also connect with the cathode of third diode 1534, the second output terminal of third AC-DC converter 1531 and the
The first end of three capacitances 1533 connects, and the second output terminal of third AC-DC converter 1531 also becomes with the second DC-DC
Second input terminal of parallel operation 1535 connects.
The second end of 3rd resistor 1532 is connect with the anode of third diode 1533, and the second end of 3rd resistor 1532 is also
It is connect with the second end of the second capacitance 1533.
The cathode of third diode 1534 is connect with the first input end of the second DC-DC converter 1535.
The output end of second DC-DC converter 1535 is connect with the input terminal of at least one A.C. contactor 1536.
Wherein, with reference to shown in Fig. 8, the input terminal of third AC-DC converter can become the of electric appliance with the second power frequency
Two output end U3 connections.In this way, externally fed signal or in-line power signal are exchanged through third AC-DC converter
Turning direct current signal to handle to obtain the second direct current signal, the second direct current signal gives third capacitor charging after 3rd resistor current limliting, and
Turn low-voltage dc signal to the third direct current signal of acquisition is sent to the second DC-DC converter progress high-voltage dc signal
Etc. signal conversion processes, obtain the voltage signal with voltage matches needed at least one A.C. contactor, wherein third diode
Effect be the third direct current signal that obtains in order to prevent without 3rd resistor just to third capacitor charging, so that third capacitance is connect
The second direct current signal received causes greatly very much the damage of third capacitance.It should be noted that when the confession of grid-connected low voltage crossing
When electric system low voltage crossing, externally fed signal or in-line power signal that third AC-DC converter receives are less than
Predetermined threshold value keeps at least one A.C. contactor at this point, third capacitance can give at least one A.C. contactor to provide power supply
The normal work of equal loads.
Further specifically, the third output end U4 that the second power frequency becomes electric appliance can directly be connect with AC load.
Further, select 3rd resistor resistance value R and third capacitance capacity C size when, can be by with lower section
Formula is realized：
When the power supply system of grid-connected low voltage crossing normal work, it is assumed that the second power frequency becomes the output voltage of electric appliance
For 185V voltage is obtained after third AC-DC converter rectificationAssuming that input average current
For 0.7A, then power P=240*0.7=168W can be obtained.According to the conservation of energy, pass through formula P*2=0.5*C* (2402-
1002), it can calculate what required second capacitance when the power supply system low voltage crossing of grid-connected low voltage crossing in 2 seconds provided
Electricity C=14118uF, 100 be minimum amount of voltage that the second DC-DC converter can receive in formula.In practical application mistake
Cheng Zhong, capacitance usually retain 150% surplus, thus may determine that the actual capacity value C=114118*150% of third capacitance
=21176uF.
The energy impact Q=1/2*C*V that 3rd resistor can be born2=0.5*0.021176* (2402)=610J；Assuming that
Capacitor charging time is 1s, then 5RC=1s, can obtain 10 ohm of 3rd resistor resistance value R=1/ (5*0.021176) ≈.But
In actual application, the characteristics of RC circuits, can obtain 98% or more energy value for capacitance within the 4RC times, so energy
Value conversion is calculated according to the time of 4RC, it assumes that charging time 1s, when N takes 90, according to formula：Resistance percussive energy
÷ 4RC=N × resistor power, i.e. 610/4RC=90* resistor powers, it is about 8.5W that resistor power, which can be obtained, is being actually used
Cheng Zhong, actual resistance power are chosen the surplus of 3 times of calculating resistor powers, be can be obtained：Actual resistance work(=3*8.5W ≈ 25W, institute
With 3rd resistor can be resistance value be 10 ohm, power for 25W resistance.It should be noted that being referred to choose third herein
The method of the capacitance of capacitance and the resistance value of 3rd resistor chooses the capacitance, first resistor and the second electricity of the first capacitance and the second capacitance
The resistance value of resistance.
The power supply circuit that the embodiment of the present invention is provided obtains externally fed signal by first input end or passes through
Second input terminal obtains in-line power signal, and analyzes externally fed signal or in-line power signal obtains voltage output letter
Number, and exported by output end；In this way, user can select externally fed signal or in-line power to believe according to the demand of oneself
It number powers for photovoltaic DC-to-AC converter, solves the problems, such as that the auxiliary power supply mode of photovoltaic DC-to-AC converter in the prior art is relatively simple, it is real
Show and a variety of auxiliary power supply modes is used to be powered for photovoltaic DC-to-AC converter, ensure that the power supply system of grid-connected low voltage crossing
The normal work of system extends power supply plan, further, the working condition of the second frequency converter is controlled by energy-saving relay,
The autophage of night photovoltaic DC-to-AC converter is reduced, and storage capacitor is respectively provided in output voltage receiving circuit, when
Can be that branch circuit is separately powered when low voltage crossing, it is ensured that the normal operation of equipment improves the reliability of equipment, and
Monitoring device is realized with power supply circuit and is detached, it is ensured that the safety of operating personnel, and energy saving relay is controlled by monitoring device
The power supply of device increases the controllability of equipment.
The embodiment of the present invention provides a kind of method of supplying power to, can be applied to the power supply circuit that the corresponding embodiments of Fig. 1-8 provide
In, with reference to shown in Fig. 9, this approach includes the following steps：
Step 601 obtains power supply signal.
Wherein, power supply signal includes that the externally fed signal provided by externally fed power supply or internal power supply provide
In-line power signal.
Step 602 analyzes power supply signal, obtains voltage output signal and exports.
Wherein, first voltage output signal includes at least voltage output signal all the way.
It should be noted that the explanation in the present embodiment with same steps in other embodiments or concept, is referred to
Description in the power supply circuit that the corresponding embodiments of Fig. 1-8 provide, details are not described herein again.
The method of supplying power to that the embodiment of the present invention is provided is analyzed power supply signal, is obtained after obtaining power supply signal
Voltage output signal simultaneously exports；In this way, user can select externally fed signal or in-line power to believe according to the demand of oneself
It number powers for photovoltaic DC-to-AC converter, solves the problems, such as that the auxiliary power supply mode of photovoltaic DC-to-AC converter in the prior art is relatively simple, it is real
Show and a variety of auxiliary power supply modes is used to be powered for photovoltaic DC-to-AC converter, ensure that the power supply system of grid-connected low voltage crossing
The normal work of system, extends power supply plan.
An embodiment of the present invention provides a kind of method of supplying power to, can be applied to the power supply electricity that the corresponding embodiments of Fig. 1-2 provide
Lu Zhong, referring to Fig.1 shown in 0, when energy-saving relay 115 is not received by control instruction, this approach includes the following steps：
Step 701 obtains power supply signal.
Wherein, power supply signal includes externally fed signal or in-line power signal.
Step 702 carries out voltage conversion to power supply signal, obtains first voltage output signal and exports.
Wherein, first voltage output signal includes at least voltage output signal all the way.
Specifically, according to first voltage output signal include at least whether voltage output signal meets default item all the way
Part can execute step 703~704 or step 705, when first voltage output signal include at least all the way voltage output believe
Step 703~704 are executed when number meeting preset condition, when at least voltage output signal all the way that first voltage output signal includes
It is unsatisfactory for executing step 705 when preset condition；
Specifically, preset condition can measure the empirical value obtained by test of many times, for example, it may be when connecing
The voltage output signal received is less than or equal to some threshold value.
Step 703, when the voltage output signal received meets preset condition, voltage output signal exchange-
Direct current signal is converted to the first signal, and stores and obtain the first energy storage signal.
Step 704 is converted to first voltage signal to the first signal progress DC-DC signal.
Step 705, when the voltage output signal received is unsatisfactory for preset condition, the first energy storage signal is carried out straight
Stream-direct current signal is converted to first voltage signal.
It should be noted that the explanation in the present embodiment with same steps in other embodiments or concept, is referred to
Description in a kind of power supply circuit that the corresponding embodiments of Fig. 1-2 provide, details are not described herein again.
The method of supplying power to that the embodiment of the present invention is provided is analyzed power supply signal, is obtained after obtaining power supply signal
Voltage output signal simultaneously exports；In this way, user can select externally fed signal or in-line power to believe according to the demand of oneself
It number powers for photovoltaic DC-to-AC converter, solves the problems, such as that the auxiliary power supply mode of photovoltaic DC-to-AC converter in the prior art is relatively simple, it is real
Show and a variety of auxiliary power supply modes is used to be powered for photovoltaic DC-to-AC converter, ensure that the power supply system of grid-connected low voltage crossing
The normal work of system, extends power supply plan.
Inventive embodiments provide a kind of method of supplying power to, can be applied to the power supply circuit that the corresponding embodiments of Fig. 1-8 provide
In, referring to Fig.1 shown in 1, when energy-saving relay 115 receives control instruction, this approach includes the following steps：
Step 801 obtains power supply signal.
Wherein, power supply signal includes externally fed signal or in-line power signal.
Specifically, according to the voltage output signal received, can select to execute step 803~805 or step 806~
812, step 803~805 are executed when the voltage output signal received is first voltage output signal, when the voltage received
Step 806~812 are executed when output signal is second voltage output signal；
Step 802 carries out voltage conversion to power supply signal, obtains first voltage output signal and exports.
Wherein, first voltage output signal includes at least voltage output signal all the way.
Specifically, whether meeting preset condition according to first voltage output signal, can select to execute step 803~804
Or step 805, if first voltage output signal meets preset condition and executes step 803~804, if first voltage output signal
It is unsatisfactory for preset condition and executes step 805；
Step 803, when the first voltage output signal received meets preset condition, to first voltage output signal into
Row AC-DC signal is converted to the first signal, and stores and obtain the first energy storage signal.
Step 804 is converted to first voltage signal to the first signal progress DC-DC signal.
Wherein, power supply signal includes first voltage signal.
Step 805, when the first voltage output signal received is unsatisfactory for preset condition, to the first energy storage signal carry out
DC-DC signal is converted to first voltage signal.
Specifically, after obtaining first voltage signal in step 804 or step 805, it is supplied to monitoring device, in order to monitor
Equipment is monitored the environment that need to be monitored, and according to when monitoring environment meets and presets monitoring requirement, controls and export first
Voltage signal is to energy-saving relay.
Step 806 receives power supply signal.
Step 807, according to power supply signal, voltage is carried out to power supply signal and is converted to second voltage output signal and defeated
Go out.
Wherein, second voltage output signal includes at least three road voltage output signals.
Specifically, when power supply signal is the first voltage signal of monitoring device output, energy-saving relay is according to receiving
First voltage signal normal work, receive power supply signal simultaneously be sent to the second power frequency become electric appliance, make the second power frequency become electric appliance pair
Power supply signal carries out voltage conversion process and obtains second voltage output signal and export.
Further specifically, whether meeting preset condition according to second voltage output signal, can select to execute step 808
~810 or step 811~812, if second voltage output signal meets preset condition and executes step 808~810, if the second electricity
Pressure output signal is unsatisfactory for preset condition and executes step 811~812；
If step 808, the second voltage output signal received meet preset condition, second voltage output signal is carried out
AC-DC signal is converted to second signal, and stores and obtain the second energy storage signal.
Step 809 is converted to second voltage signal to second signal progress DC-DC signal.
Specifically, second voltage signal can be supplied to the auxiliary in the power supply system of grid-connected low voltage crossing electric
The ancillary equipments such as road, such as fan.
Step 810 is converted to third signal to second voltage output signal progress AC-DC signal, and stores
To third energy storage signal, output third signal obtains tertiary voltage signal.
Specifically, tertiary voltage signal can be supplied at least one of the power supply system of grid-connected low voltage crossing
A.C. contactor, in order to which at least one A.C. contactor carries out subsequent control processing.
Step 811, when the second voltage output signal received is unsatisfactory for preset condition, to the second energy storage signal carry out
DC-DC signal is converted to second voltage signal.
Step 812, output third energy storage signal obtain tertiary voltage signal.
It should be noted that the explanation in the present embodiment with same steps in other embodiments or concept, is referred to
Description in a kind of power supply circuit that the corresponding embodiments of Fig. 1-8 provide, details are not described herein again.
The method of supplying power to that the embodiment of the present invention is provided is analyzed power supply signal, is obtained after obtaining power supply signal
Voltage output signal simultaneously exports；In this way, user can select externally fed signal or in-line power to believe according to the demand of oneself
It number powers for photovoltaic DC-to-AC converter, solves the problems, such as that the auxiliary power supply mode of photovoltaic DC-to-AC converter in the prior art is relatively simple, it is real
Show and a variety of auxiliary power supply modes is used to be powered for photovoltaic DC-to-AC converter, ensure that the power supply system of grid-connected low voltage crossing
The normal work of system extends power supply plan, further, becomes the working condition of electric appliance by energy-saving relay control second,
The autophage of night photovoltaic DC-to-AC converter is reduced, and storage capacitor is respectively provided in output voltage receiving circuit, when
Can be that branch circuit is separately powered when low voltage crossing, it is ensured that the normal operation of equipment improves the reliability of equipment, and
Monitoring device is realized with power supply circuit and is detached, it is ensured that the safety of operating personnel, and energy saving relay is controlled by monitoring device
The power supply of device increases the controllability of equipment.
It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, system or computer program
Product.Therefore, the shape of hardware embodiment, software implementation or embodiment combining software and hardware aspects can be used in the present invention
Formula.Moreover, the present invention can be used can use storage in the computer that one or more wherein includes computer usable program code
The form for the computer program product implemented on medium (including but not limited to magnetic disk storage and optical memory etc.).
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real
The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (16)
1. a kind of power supply circuit, which is characterized in that the power supply circuit includes：Power supply module, first input end, the second input terminal
And output end；Wherein：
The power supply module, for obtaining externally fed signal by the first input end or passing through second input terminal
In-line power signal is obtained, and analyzes the externally fed signal or the in-line power signal obtains voltage output signal,
And it is exported by the output end；Wherein, the externally fed signal is provided by externally fed power supply, the in-line power information
It is provided by internal power supply.
2. power supply circuit according to claim 1, which is characterized in that the power supply module includes：First switch, second open
It closes, A.C. contactor and the first power frequency become electric appliance；Wherein：
The first input end of the first switch and the second input terminal are connect with the first input end of the power supply circuit, and described
One switch the first output end connect with the first input end of the A.C. contactor, the second output terminal of the first switch and
Second input terminal of the A.C. contactor connects；
The first input end of the second switch and the second input terminal are connect with the second input terminal of the power supply circuit, and described
Two switch the first output ends connect with the third input terminal of the A.C. contactor, the second output terminal of the second switch and
4th input terminal of the A.C. contactor connects；
The first input end that first output end of the A.C. contactor becomes electric appliance with first power frequency is connect, and the exchange connects
The second input terminal that the second output terminal of tentaculum becomes electric appliance with first power frequency is connect, the third output of the A.C. contactor
The first input end that end also becomes electric appliance with first power frequency is connect, the 4th output end and described first of the A.C. contactor
Power frequency becomes the third input terminal connection of electric appliance；
The output end that first power frequency becomes electric appliance is connect with the output end of the power supply circuit.
3. power supply circuit according to claim 2, which is characterized in that
The first switch, for when the first switch is closed, being connect by the first input end of the power supply circuit
The externally fed signal is received, and the externally fed signal is sent to the first power frequency power transformation by the A.C. contactor
Device；
The second switch, for when the second switch is closed, institute to be received by the second input terminal of the power supply circuit
In-line power signal is stated, and the in-line power signal to first power frequency is sent by the A.C. contactor and becomes electric appliance；
First power frequency becomes electric appliance, for the externally fed signal or the in-line power signal to be carried out voltage conversion
The voltage output signal is obtained, and the voltage output signal is exported by the output end of the power supply circuit；Wherein, described
First power frequency becomes the output end of electric appliance and passes through the output end of the power supply circuit output at least voltage output signal all the way.
4. power supply circuit according to claim 2, which is characterized in that the power supply module further includes：Energy-saving relay and
Second power frequency becomes electric appliance；Wherein：
The first input end of the energy-saving relay is connect with the first output end of the A.C. contactor, the energy-saving relay
First input end also connect with the third output end of the A.C. contactor, the second input terminal of the energy-saving relay and institute
The second output terminal connection of A.C. contactor is stated, the first output end of the energy-saving relay becomes electric appliance with second power frequency
First input end connects, and the second input terminal that the second output terminal of the energy-saving relay becomes electric appliance with second power frequency connects
It connects, the third input terminal and the 4th input terminal of the energy-saving relay are connect with power supply signal；
The third input terminal that second power frequency becomes electric appliance is connect with the 4th output end of the A.C. contactor, second work
The output end that frequency becomes electric appliance is connect with the output end of the power supply circuit.
5. power supply circuit according to claim 4, which is characterized in that
The energy-saving relay, for when receiving the power supply signal, controlling the state that second power frequency becomes electric appliance；
Second power frequency becomes electric appliance, for receiving the externally fed signal or the in-line power signal, to described outer
Portion's power supply signal or the in-line power signal carry out voltage conversion, obtain the voltage control signal and are sent to the confession
The output end of circuit；Wherein, second power frequency become the output end of electric appliance by the output end of the power supply circuit export to
Voltage output signal described in few three tunnels.
6. power supply circuit according to claim 4, which is characterized in that the power supply circuit further includes power supply receiving module,
Wherein, the power supply receiving module includes：Monitoring module, auxiliary circuit module and control module；Wherein：
The monitoring module, the voltage output signal that the output end for receiving the power supply circuit exports, and to described
Voltage output signal is analyzed to obtain first voltage signal, and exports the first voltage signal to the energy-saving relay；
The auxiliary circuit module, the voltage output signal that the output end for receiving the power supply circuit exports, to institute
It states voltage output signal to be analyzed, obtains second voltage signal；
The control module, the voltage output signal that the output end for receiving the power supply circuit exports, to the electricity
Pressure output signal is analyzed, and tertiary voltage signal is obtained；Wherein, the first voltage signal, the second voltage signal and
The tertiary voltage signal is different.
7. power supply circuit according to claim 6, which is characterized in that the monitoring module includes：First AC-DC turns
Parallel operation, first resistor, the first capacitance, the first diode, the first DC-DC converter and monitoring device；Wherein：
The input terminal of first AC-DC converter is connect with the output end of the power supply circuit, and first exchange-is straight
First output end of stream transformer is connect with the first end of the first resistor, and the first of first AC-DC converter
Output end is also connect with the cathode of first diode, the second output terminal of first AC-DC converter with it is described
The first end of first capacitance connects, the second output terminal of first AC-DC converter also with first DC-DC
Second input terminal of converter connects；
The second end of the first resistor is connect with the anode of first diode, the second end of the first resistor also with institute
State the second end connection of the first capacitance；
The cathode of first diode is connect with the first input end of first DC-DC converter；
The output end of first DC-DC converter is connect with the input terminal of the monitoring device；
The output end of the monitoring device is connect with the third input terminal of the energy-saving relay and the 4th input terminal.
8. power supply circuit according to claim 6, which is characterized in that the auxiliary circuit module includes：Second exchange-straight
Stream transformer, second resistance, the second capacitance, the second diode and system auxiliary circuit；Wherein：
The input terminal of second AC-DC converter is connect with the output end of the power supply circuit, and second exchange-is straight
First output end of stream transformer is connect with the first end of the second resistance, and the first of second AC-DC converter
Output end is also connect with the cathode of second diode, the second output terminal of second AC-DC converter with it is described
The first end of second capacitance connects, the second output terminal of second AC-DC converter also with the system auxiliary circuit
The second input terminal connection；
The second end of the second resistance is connect with the anode of second diode, the second end of the second resistance also with institute
State the second end connection of the second capacitance；
The cathode of second diode is connect with the first input end of the system auxiliary circuit.
9. power supply circuit according to claim 6, which is characterized in that the control module includes：Third AC-DC turns
Parallel operation, 3rd resistor, third capacitance, third diode, the second DC-DC converter and at least one A.C. contactor；Its
In：
The input terminal of the third AC-DC converter is connect with the output end of the power supply circuit, and the third exchange-is straight
First output end of stream transformer is connect with the first end of the 3rd resistor, and the first of the third AC-DC converter
Output end is also connect with the cathode of the third diode, the second output terminal of the third AC-DC converter with it is described
The first end of third capacitance connects, the second output terminal of the third AC-DC converter also with second DC-DC
Second input terminal of converter connects；
The second end of the 3rd resistor is connect with the anode of the third diode, the second end of the 3rd resistor also with institute
State the second end connection of the second capacitance；
The cathode of the third diode is connect with the first input end of second DC-DC converter；
The output end of second DC-DC converter is connect with the input terminal of at least one A.C. contactor.
10. a kind of method of supplying power to, which is characterized in that the method includes：
Obtain power supply signal；Wherein, the power supply signal includes the externally fed signal provided by externally fed power supply or interior
The in-line power signal that portion's power supply provides；
The power supply signal is analyzed, voltage output signal is obtained and is exported.
11. according to the method described in claim 10, it is characterized in that, described analyze the power supply signal, electricity is obtained
Pressure output signal simultaneously exports, including：
Voltage conversion is carried out to the power supply signal, first voltage output signal is obtained and exports；Wherein, the first voltage is defeated
It includes at least voltage output signal all the way to go out signal.
12. according to the method for claim 11, which is characterized in that it is described that the power supply signal is analyzed, obtain electricity
Pressure output signal simultaneously exports, and further includes：
Receive power supply signal；
According to the power supply signal, second voltage output signal is converted to power supply signal progress voltage and is exported；Its
In, the second voltage output signal includes voltage output signal described at least three tunnels.
13. according to the method for claim 12, which is characterized in that the method further includes：
When the first voltage output signal received meets preset condition, the first voltage output signal is handed over
Stream-direct current signal is converted to the first signal, and stores and obtain the first energy storage signal；
DC-DC signal is carried out to first signal and is converted to first voltage signal；Wherein, the power supply signal includes
The first voltage signal.
14. according to the method for claim 13, which is characterized in that the method further includes：
When the first voltage output signal received is unsatisfactory for preset condition, the first energy storage signal is carried out straight
Stream-direct current signal is converted to the first voltage signal.
15. according to the method for claim 12, which is characterized in that the method further includes：
When the second voltage output signal received meets preset condition, the second voltage output signal is handed over
Stream-direct current signal is converted to second signal, and stores and obtain the second energy storage signal；
DC-DC signal is carried out to the second signal and is converted to second voltage signal；
AC-DC signal is carried out to the second voltage output signal and is converted to tertiary voltage signal, and stores and obtains the
Three energy storage signals export the third signal and obtain tertiary voltage signal.
16. according to the method for claim 15, which is characterized in that the method further includes：
When the second voltage output signal received is unsatisfactory for preset condition, the second energy storage signal is carried out straight
Stream-direct current signal is converted to the second voltage signal；
It exports the third energy storage signal and obtains the tertiary voltage signal.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113641235A (en) * | 2021-08-31 | 2021-11-12 | Oppo广东移动通信有限公司 | Power supply device, method, computer equipment and storage medium |
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