CN107124099B - A kind of solar voltage current transfer device - Google Patents
A kind of solar voltage current transfer device Download PDFInfo
- Publication number
- CN107124099B CN107124099B CN201710138612.0A CN201710138612A CN107124099B CN 107124099 B CN107124099 B CN 107124099B CN 201710138612 A CN201710138612 A CN 201710138612A CN 107124099 B CN107124099 B CN 107124099B
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- Prior art keywords
- voltage
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- resistance
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/20—Conversion of dc power input into dc power output without intermediate conversion into ac by combination of static with dynamic converters; by combination of dynamo-electric with other dynamic or static converters
Abstract
The invention discloses a kind of solar voltage current transfer devices, it is connected between solar panels and load, including input port, multilevel voltage current conversion module, Voltage to current transducer switch and output port, the input port connects solar panels, multilevel voltage current conversion module input terminal connects input port, voltage and current for exporting solar panels is converted into multistage DC voltage and electric current and exports to load, Voltage to current transducer switch connection multilevel voltage current conversion module is with the multi-level output for adjusting DC voltage and electric current in multilevel voltage current conversion module, output port connects the output end of Voltage to current transducer module for charging to load, the present invention is energy-saving and environment-friendly, the utilization rate of solar panels is improved simultaneously, production cost is low, practical function, it is suitble to promote the use of.
Description
Technical field
The present invention relates to a kind of solar voltage current transfer devices, efficient more particularly, to a kind of multivoltage and more electric currents
Mix the conversion equipment of output.
Background technique
As solar panels are using more and more extensive, people can increase accordingly the requirement of solar panels, at this moment,
The utilization rate of solar panels will be the popular topic of comparison, and charger can be charged using collocation solar panels to load, both energy saving
Environmental protection again not can be realized the device of the conversion of voltage and the conversion of electric current in the prior art simultaneously, and voltage turns in tradition
The transfer efficiency of parallel operation or current converter is relatively low.
Summary of the invention
In order to solve the above technical problems, the object of the present invention is to provide a kind of solar voltage current transfer devices.
The technical solution adopted by the present invention is that: a kind of solar voltage current transfer device is connected to solar panels and bears
Between load, comprising:
Input port, input port connect solar panels；
Multilevel voltage current conversion module, multilevel voltage current conversion module input terminal connect input port, and being used for will too
The voltage and current of positive energy plate output is converted into multistage DC voltage and electric current and exports to load；
Voltage to current transducer switch, Voltage to current transducer switch connection multilevel voltage current conversion module is with more for adjusting
The multi-level output of DC voltage and electric current in step voltage current conversion module；And
Output port, output port connect the output end of Voltage to current transducer module for charging to load.
In the technical program, multilevel voltage current conversion module includes:
The input terminal of multilevel voltage processing module, multilevel voltage processing module connects solar panels by input port, uses
Multistage DC voltage is converted into the voltage for exporting solar panels to export to load；
Multistage current processing module, multistage current processing module input connect solar panels by input port, are used for
The electric current that solar panels export is converted into multistage electric current to export to load；And
The anode of diode D5, diode D5 connect the output end of multistage current processing module, and the cathode of diode D5 connects
The feedback end of multilevel voltage processing module is connect, for simultaneously to load output DC voltage and electric current.
In the technical program, Voltage to current transducer switch includes:
Voltage change-over switch SW1, voltage change-over switch SW1 connection multilevel voltage processing module is for adjusting multilevel voltage
The multi-level output of DC voltage in processing module；And
Rheotrope SW2, the multistage current processing module of the rheotrope SW2 connection is for adjusting multistage
The multi-level output of electric current in current processing module.
In the technical program, multilevel voltage processing module includes:
Voltage conversion chip U1, voltage conversion chip U1 input terminal is used for by input port connection solar panels will too
The voltage of positive energy plate output is converted into multistage DC voltage；
Input capacitance EC1, input capacitance EC1 are connected in parallel on the input terminal of voltage conversion chip U1 for converting core to voltage
Piece U1 provides stable voltage；
First adjustable output resistance, the feedback end of the first adjustable output resistance connection voltage conversion chip U1 is to be used for
It is converted into exporting DC voltage accordingly.
In the technical program, voltage conversion chip U1 input terminal is parallel with a decoupling capacitor C1 also to make an uproar for filtering out high frequency
Sound, reduce other electronic components is influenced by high-frequency noise.
In the technical program, voltage conversion chip U1 output end is also parallel with for protecting voltage conversion chip U1 not felt
The sustained diode 4 for answering electromotive force to puncture or burn out.
In the technical program, voltage conversion chip U1 output end is also parallel with one for filtering out the capacitor C3 of ripple voltage.
In the technical program, multistage current processing module includes conducting resistance R5, metal-oxide-semiconductor SC1, the second adjustable output resistance
And operational amplification circuit, metal-oxide-semiconductor SC1 gate input connect solar panels by conducting resistance R5 and input port to lead to
The conducting of conducting resistance R5 triggering metal-oxide-semiconductor SC1 is crossed, metal-oxide-semiconductor SC1 drain output connects operation by the second adjustable output resistance
The input terminal of amplifying circuit is with for inputting electric current to be amplified to operational amplification circuit, operational amplification circuit output end passes through two poles
The feedback end of pipe D5 connection multilevel voltage processing module.
It further include USB output module in the technical program, USB output module includes: rectifier diode D1, voltage processing
Chip U3, third are adjustable output resistance, USB overcurrent protection module and USB output interface, rectifier diode D1 are arranged in voltage
Direct current telecommunications is converted to the ac signal for inputting solar panels between processing chip U3 input terminal and input port
Number, voltage handles the chip U3 output end connection adjustable output resistance of third with the adjustable DC voltage of output numerical value, and USB overcurrent is protected
Electric current mistake when with for preventing overload or short-circuit state is arranged between the adjustable output resistance of third and USB output interface in shield module
The load connected on USB output interface is damaged greatly.
Beneficial effects of the present invention: the design provides a kind of solar voltage current transfer device, defeated using solar panels
The voltage and current entered exports multistage DC voltage and electric current simultaneously to load by multilevel voltage current conversion module, it is not only energy saving but also
Environmental protection, while the utilization rate of solar panels is improved, the design production cost is low, practical function, is suitble to promote the use of.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples:
Fig. 1 is a kind of first stereoscopic figure of solar voltage current transfer device of the present invention；
Fig. 2 is a kind of second stereoscopic figure of solar voltage current transfer device of the present invention；
Fig. 3 is a kind of circuit diagram of solar voltage current transfer device of the present invention；
Fig. 4 is a kind of circuit diagram of solar voltage current transfer device voltage processing module of the present invention；
Fig. 5 is a kind of circuit diagram of solar voltage current transfer device current processing module of the present invention；
Fig. 6 is a kind of circuit diagram of solar voltage current transfer device USB output module of the present invention.
Specific embodiment
As shown in figs 1 to 6, a kind of solar voltage current transfer device is connected between solar panels and load, packet
Input port 1, multilevel voltage current conversion module, Voltage to current transducer switch and output port 2, the input port 1 is included to connect
Connect solar panels, multilevel voltage current conversion module input terminal connects input port 1, voltage for exporting solar panels and
Electric current is converted into multistage DC voltage and electric current and exports to load, Voltage to current transducer switch connection multilevel voltage electric current modulus of conversion
Block connects voltage with the multi-level output for adjusting DC voltage and electric current in multilevel voltage current conversion module, output port 2
The output end of current conversion module to load for charging.
Wherein, multilevel voltage current conversion module include multilevel voltage processing module 3, multistage current processing module 4 and
The input terminal of diode D5, the multilevel voltage processing module 3 connect solar panels by input port 1, are used for solar panels
The voltage of output is converted into multistage DC voltage and exports to load；Multistage 4 input terminal of current processing module is connected by input port 1
Solar panels are connect, the electric current for exporting solar panels is converted into multistage electric current and exports to load；The anode of diode D5 is even
Connect the output end of multistage current processing module 4, the feedback end of the cathode connection multilevel voltage processing module 3 of diode D5, with
In simultaneously to load output DC voltage and electric current.
Voltage to current transducer switch includes: voltage change-over switch SW1 and rheotrope SW2, voltage change-over switch SW1
Multilevel voltage processing module 3 is connected with the multi-level output for adjusting DC voltage in multilevel voltage processing module 3；Electric current conversion
The multistage current processing module 4 of switch SW2 connection is with the multi-level output for adjusting electric current in multistage current processing module 4.
Multilevel voltage processing module 3 includes voltage conversion chip U1, input capacitance EC1 and first is adjustable output resistance,
Input capacitance EC1 is connected in parallel on the input terminal of voltage conversion chip U1 with for providing stable voltage to voltage conversion chip U1,
Voltage conversion chip U1 input terminal is connected solar panels by input port 1 and is converted into the voltage for exporting solar panels
Multistage DC voltage, the feedback end of the first adjustable output resistance connection voltage conversion chip U1 is for being converted into exporting accordingly
DC voltage.
First adjustable output resistance includes resistance R11 and resistance R4, and resistance R11 is in parallel with resistance R4, in the present embodiment, electricity
XL4016 chip, XL4016 chip input terminal pin VIN connection input capacitance EC1 can be used in pressure conversion chip 11, and output end draws
Foot SW connection resistance R4, feedback end pin FB connection resistance R11, the DC voltage value V1=1.25* (1+R4/R11) of output lead to
The i.e. changeable V1 value of resistance value for changing R4 or R11 is crossed, in the present embodiment, the resistance value of resistance R4 is set as 30K Ω, and first is adjustable
Output resistance further includes the resistance R12 and resistance R13 in parallel with resistance R11, and the resistance value of resistance R11 is set as 2.2K Ω, resistance
The resistance value of R12 is set as 4.7K Ω, and the resistance value of resistance R13 is set as 7.5K Ω, by respectively with resistance R11, resistance R12 and electricity
The concatenated voltage change-over switch SW1 of R13 is hindered to select the DC output voltage of output 18V, 9V or 6V.
Preferably, voltage conversion chip U1 input terminal is parallel with a decoupling capacitor C1 also to subtract for filtering out high-frequency noise
Other few electronic components are influenced by high-frequency noise.
Preferably, voltage conversion chip U1 output end is also parallel with for protecting voltage conversion chip U1 not by induction electric
Schottky diode, model MBR1545 can be used in the sustained diode 4 that gesture punctures or burns out, the sustained diode 4.
Preferably, voltage conversion chip U1 output end is also parallel with one for filtering out the capacitor C3 of ripple voltage, the capacitor
Electrolytic capacitor or ceramic condenser can be selected in C3.
Multistage current processing module 4 includes conducting resistance R5, metal-oxide-semiconductor SC1, the second adjustable output resistance and operation amplifier
Circuit 41, metal-oxide-semiconductor SC1 gate input connect solar panels by conducting resistance R5 and input port 1 to pass through electric conduction
The conducting of R5 triggering metal-oxide-semiconductor SC1 is hindered, metal-oxide-semiconductor SC1 drain output connects operational amplification circuit by the second adjustable output resistance
41 input terminal is with for inputting electric current to be amplified to operational amplification circuit 41,41 output end of operational amplification circuit passes through diode
The feedback voltage of the feedback end of D5 connection multilevel voltage processing module 3, above-mentioned XL4016 chip feedback end pin FB is 1.25V,
Diode D5, operational amplification circuit 41, the second adjustable output resistance and metal-oxide-semiconductor SC1 are successively acted on, diode is measured to obtain
The pressure drop of D5 is 0.7V, therefore is 0.55V by the voltage of 41 input terminal of operational amplification circuit, in operational amplification circuit 41,
Resistance R15 and the one end resistance R16 are parallel to the negative input of operational amplifier U2, and the resistance R15 other end connects operation amplifier
The resistance value ratio of the output end of device U2, resistance R16 other end ground connection, resistance R15 and resistance R16 are 1.5, that is, pass through operation amplifier
The voltage of device U2 can amplify 1.5 times, and therefore, the voltage acted on the second adjustable output resistance and metal-oxide-semiconductor SC1 is 0.37V, warp
Measure pressure drop on metal-oxide-semiconductor SC1 is 0.2V, if expecting the average anode current of 1A, the resistance value of the second adjustable output resistance
It is set as 0.17 Ω, in the present embodiment, the second adjustable output resistance is set as resistance R1, resistance R2 and electricity parallel with one another
R3 is hindered, the resistance value of resistance R1 is 0.17 Ω, and the resistance value of resistance R2 is 0.05 Ω, and the resistance value of resistance R3 is 0.03 Ω, passes through difference
The output electric current of output 1A, 3A or 5A is selected with the concatenated rheotrope SW2 of resistance R1, resistance R2 and resistance R3.
In the present embodiment, the model of operational amplifier U2 is LMV358, the model IN4148 of diode, the model of metal-oxide-semiconductor 21
SI4812。
The invention also includes USB output module 5, USB output module 5 includes: rectifier diode D1, voltage processing chip
U3, third are adjustable output resistance, USB overcurrent protection module 42 and USB output interface 43, rectifier diode D1 are arranged in voltage
Direct current telecommunications is converted to the ac signal for inputting solar panels between processing chip U3 input terminal and input port 1
Number, voltage handles the chip U3 output end connection adjustable output resistance of third with the adjustable DC voltage of output numerical value, and USB overcurrent is protected
Electricity when shield module 42 is arranged between the adjustable output resistance of third and USB output interface 43 with for preventing overload or short-circuit state
It flows through and the load connected on USB output interface 43 is damaged greatly.In the design, the model of voltage processing chip U3 is set as
The input terminal IN of SY8120B chip, the SY8120B chip passes through rectifier diode D1 connection solar panels, Y8120B chip
Output end BS is in parallel with the adjustable output resistance of third, and third is adjustable, and output resistance is set as resistance R17 and R18 parallel with one another,
In the present embodiment, the resistance value ratio R17/R18 of resistance R17 and resistance R18 are set as 7.47, and wherein resistance R17 connection USB overcurrent is protected
It protects module 42 and exports DC voltage V2=0.6* (1+R17/R18)=5V, USB overcurrent protection to USB overcurrent protection module 42
SY6280 chip can be used in module 42.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to above embodiment, as long as with
Essentially identical means realize that the technical solution of the object of the invention belongs within protection scope of the present invention.
Claims (8)
1. a kind of solar voltage current transfer device is connected between solar panels and load characterized by comprising
Input port (1), the input port (1) connect solar panels；
Multilevel voltage current conversion module, the multilevel voltage current conversion module input terminal connect input port (1), and being used for will
The voltage and current of solar panels output is converted into multistage DC voltage and electric current and exports to load；
Voltage to current transducer switch, the Voltage to current transducer switch connection multilevel voltage current conversion module is with more for adjusting
The multi-level output of DC voltage and electric current in step voltage current conversion module；And
Output port (2), the output end of the output port (2) connection Voltage to current transducer module with for charging to load,
The multilevel voltage current conversion module includes:
The input terminal of multilevel voltage processing module (3), the multilevel voltage processing module (3) is connected too by input port (1)
Positive energy plate, the voltage for exporting solar panels are converted into multistage DC voltage and export to load；
Multistage current processing module (4), multistage current processing module (4) input terminal connect the sun by input port (1)
Energy plate, the electric current for exporting solar panels are converted into multistage electric current and export to load；And
The anode of diode D5, the diode D5 connect the output end of multistage current processing module (4), the cathode of diode D5
The feedback end of multilevel voltage processing module (3) is connected, for simultaneously to load output DC voltage and electric current.
2. a kind of solar voltage current transfer device according to claim 1, which is characterized in that the voltage and current turns
Changing switch includes:
Voltage change-over switch SW1, the voltage change-over switch SW1 connection multilevel voltage processing module (3) is for adjusting multistage
The multi-level output of DC voltage in voltage processing module (3)；And
Rheotrope SW2, the multistage current processing module (4) of the rheotrope SW2 connection is for adjusting multistage
The multi-level output of electric current in current processing module (4).
3. a kind of solar voltage current transfer device according to claim 1, which is characterized in that at the multilevel voltage
Managing module (3) includes:
Voltage conversion chip U1, the voltage conversion chip U1 input terminal connect solar panels by input port (1) to be used for
The voltage that solar panels export is converted into multistage DC voltage；
Input capacitance EC1, the input capacitance EC1 are connected in parallel on the input terminal of voltage conversion chip U1 for converting core to voltage
Piece U1 provides stable voltage；
First adjustable output resistance, the feedback end of the first adjustable output resistance connection voltage conversion chip U1 is for converting
At corresponding output DC voltage.
4. a kind of solar voltage current transfer device according to claim 3, it is characterised in that: the voltage converts core
Piece U1 input terminal is parallel with a decoupling capacitor C1 also to reduce other electronic components by high-frequency noise for filtering out high-frequency noise
It influences.
5. a kind of solar voltage current transfer device according to claim 3, it is characterised in that: the voltage converts core
Piece U1 output end is also parallel with the freewheeling diode for protecting voltage conversion chip U1 not punctured or burnt out by induced electromotive force
D4。
6. a kind of solar voltage current transfer device according to claim 3, it is characterised in that: the voltage converts core
Piece U1 output end is also parallel with one for filtering out the capacitor C3 of ripple voltage.
7. a kind of solar voltage current transfer device according to claim 1, it is characterised in that: at the multistage electric current
Managing module (4) includes conducting resistance R5, metal-oxide-semiconductor SC1, the second adjustable output resistance and operational amplification circuit (41), the MOS
Pipe SC1 gate input connects solar panels by conducting resistance R5 and input port (1) and is triggered with passing through conducting resistance R5
The conducting of metal-oxide-semiconductor SC1, metal-oxide-semiconductor SC1 drain output are defeated by the second adjustable output resistance connection operational amplification circuit (41)
Enter end so that for inputting electric current to be amplified to operational amplification circuit (41), operational amplification circuit (41) output end passes through diode D5
Connect the feedback end of multilevel voltage processing module (3).
8. a kind of solar voltage current transfer device according to claim 1, which is characterized in that further include USB output
Module (5), the USB output module (5) include: rectifier diode D1, voltage processing chip U3, third is adjustable output resistance,
USB overcurrent protection module (42) and USB output interface (43), the rectifier diode D1 setting are defeated in voltage processing chip U3
Enter and DC signal is converted to the ac signal for inputting solar panels between end and input port (1), at voltage
The chip U3 output end connection adjustable output resistance of third is managed with the adjustable DC voltage of output numerical value, USB overcurrent protection module
(42) electric current when with for preventing overload or short-circuit state is set between the adjustable output resistance of third and USB output interface (43)
It is excessive that the load connected on USB output interface (43) is damaged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710138612.0A CN107124099B (en) | 2017-03-09 | 2017-03-09 | A kind of solar voltage current transfer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710138612.0A CN107124099B (en) | 2017-03-09 | 2017-03-09 | A kind of solar voltage current transfer device |
Publications (2)
| Publication Number | Publication Date |
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| CN107124099A CN107124099A (en) | 2017-09-01 |
| CN107124099B true CN107124099B (en) | 2019-06-25 |
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| CN201710138612.0A Expired - Fee Related CN107124099B (en) | 2017-03-09 | 2017-03-09 | A kind of solar voltage current transfer device |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5821824A (en) * | 1997-08-25 | 1998-10-13 | National Semiconductor Corporation | Multistage voltage converter for voltage controlled oscillator |
| JP2006147220A (en) * | 2004-11-17 | 2006-06-08 | Polymer Giken:Kk | Lighting fixture |
| CN102118120A (en) * | 2009-12-30 | 2011-07-06 | 鸿富锦精密工业（深圳）有限公司 | Solar power supply system and method for increasing power supply efficiency thereof |
| KR101350532B1 (en) * | 2012-06-29 | 2014-01-15 | 전남대학교산학협력단 | Multi-level converter, and inverter having the same and solar power supplying apparatus having the same |
| US9559611B2 (en) * | 2012-09-28 | 2017-01-31 | General Electric Company | Multilevel power converter system and method |
| CN105048773A (en) * | 2015-07-23 | 2015-11-11 | 深圳开立生物医疗科技股份有限公司 | Output voltage control circuit |
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