WO2014135957A2 - Method and apparatus for communication and addressing components of dc power source arrays - Google Patents
Method and apparatus for communication and addressing components of dc power source arrays Download PDFInfo
- Publication number
- WO2014135957A2 WO2014135957A2 PCT/IB2014/000260 IB2014000260W WO2014135957A2 WO 2014135957 A2 WO2014135957 A2 WO 2014135957A2 IB 2014000260 W IB2014000260 W IB 2014000260W WO 2014135957 A2 WO2014135957 A2 WO 2014135957A2
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- WO
- WIPO (PCT)
- Prior art keywords
- solar cell
- cell panel
- photovoltaic
- string
- smart diode
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000004891 communication Methods 0.000 title claims description 7
- 238000003491 array Methods 0.000 title description 2
- 238000012544 monitoring process Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/02016—Circuit arrangements of general character for the devices
- H01L31/02019—Circuit arrangements of general character for the devices for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/02021—Circuit arrangements of general character for the devices for devices characterised by at least one potential jump barrier or surface barrier for solar cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/044—PV modules or arrays of single PV cells including bypass diodes
-
- 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
Definitions
- the present invention relates to the field of DC power source strings. More particularly, the invention relates to a method and apparatus for
- I- V curve Current- Voltage curve
- the I-V curve characterizes the operation of the energy producing cell for a given cell (for example, in case of a photovoltaic cell, defined by the cell's dimensions and materials, e.g. single- / poly- crystalline silicon, amorphous silicon, CDTE and other materials) and for certain operation conditions of the cell, e.g. determined by the operational temperature of a photovoltaic cell (which might affect its efficiency) and the amount of input energy to be converted by the cell to electric energy.
- a multitude of energy producing cells connected in series to one another provides electric output having certain electric current which equally flows within all the cells of the string.
- the output voltage of such string is the sum of voltages, generated by each of the cells in accordance with the corresponding I-V curves of the cells and with said certain electric current which flows through the cells of the string.
- each cell is constrained to operate at a certain fixed point along its I-V curve which is determined in accordance with the value of said certain current.
- Said certain current is, in turn, dependent on the electric load on the entire cell string.
- Typical energy generation module includes an arrangement of multiple cell strings arranged in parallel electrical connection with respect to one another such that the output currents from the so-connected cell strings are accumulated.
- FIG. 1 illustrates schematically the known "central inverter” configuration of a solar power system (module) 100.
- the system 100 includes two cell strings 107a and 107b including respectively multitude of photovoltaic cells also referred to herein as solar panels 101 electrically connected in series to each other.
- the number of cells 101 in each string (107a, 107b) is designed to provide sufficiently high output voltage from each of the strings (107a, 107b). This is because efficient conversion from the DC electricity produced by the cells (101) into typical standard network AC voltages (e.g. of about 100V, 120V, 240V or 480V AC) requires relatively high input DC voltage (about several hundreds of volts DC should be provided as input to the inverter).
- Typical cell strings include multiple solar panels, and the number and type(s) of which are selected such as to provide high DC output voltage from the string (of about 400 or 600 volt).
- the cell strings 107a and 107b are electrically connected, in parallel forming a parallel arrangement 107 having output electrical current being the total electric current from the strings.
- the number of strings in such arrangement is dictated by the required current output from the solar power system 100.
- Such energy generation module 100 has a corresponding I-V curve associated with the IV curves of all the cell strings in the module, while the I-V curve of a string is associated with the I- V curves of the individual cells and with the nature of the electric connection between the cells of the strings.
- each string is a sum of the output voltages of the cells of the string.
- Each of the cells in the string is associated with a bypass diode 109 which enables current along the string to bypass the cell associated therewith. This allows operation of the string even if at least one of its cells malfunctions (e.g. cells having high resistance or cells which operate under shaded light conditions and thus are incapable of providing the required current).
- the bypass diodes actually operate to totally neutralize malfunctioning or "weak" cells (which cannot produce the current value that flows along the string).
- each string is associated with a blocking diode 106 at the end of every serial string.
- MPPT 105 operates to choose an I/V operation point of the parallel arrangement 107 which produces maximum DC power.
- MPPT units may be associated with individual cells and/or individual strings (rather than using a single MPPT for all the strings as described above).
- US Patent Publication 2008/0143188 discloses a system and method for combining power from DC power sources using MPPT units associated with the power sources respectively.
- each power source is coupled to a converter.
- Each converter converts input power to output power by monitoring and maintaining the input power at a maximum power point. Substantially all input power is converted to the output power, and the controlling is performed by allowing output voltage of the converter to vary.
- the converters are coupled in series.
- An inverter is connected in parallel with the series connection of the converters and inverts a DC input to the converters into an AC output.
- the inverter maintains the voltage at the inverter input at a desirable voltage by varying the amount of the current drawn from the converters.
- the current and the output power of the converters determine the output voltage at each converter.
- the present invention further comprises a communication and addressing system for a photovoltaic (PV) solar cell panels in a solar cell panel string for ensuring the efficient operation of a photovoltaic (PV) solar cell system, comprising: a string concentrating element for sending a command to a first smart diode connected in parallel with a photovoltaic (PV) solar cell panel in a string, said photovoltaic (PV) solar cell panel being connected in series a plurality of photovoltaic (PV) solar cell panel wherein a first photovoltaic (PV) solar cell panel of the solar cell panel string has the lowest voltage and a last photovoltaic (PV) solar cell panel of the solar cell panel string has the highest voltage; wherein said smart diode element connected in parallel with said photovoltaic (PV) solar cell panel, wherein the outlet of said smart diode is connected to inlet of a photovoltaic (PV) solar cell panel in said solar cell panel string and the inlet of said smart diode is connected
- FIG. 1 is a schematic illustration of the conventional central inverter configuration of a solar power system
- FIG. 2 shows a string of solar panels according to an embodiment of the present invention
- FIG. 3 shows an array of strings of solar panels according to a further embodiment of the present invention.
- the present invention provides a novel method for communicating with components of DC power source system such as solar cells or panels, battery cells, fuel cells, etc.
- components of DC power source system such as solar cells or panels, battery cells, fuel cells, etc.
- a novel method addressing the components of DC power source system such as solar cells or panels, battery cells, fuel cells, etc. is also provided.
- the system of the present invention comprises combinations of 2 basic units:
- a communication unit capable of communicating forward and backward, detecting instructions relates to it, sending massages, resetting and setting its own address and blocking the forward communication;
- LMU line management unit
- LMU 311
- SC string concentrator
- LMU 313
- SD smart diode
- LMU (311) receives the report sign 1 as OK and send command to device (313) 0 to become 2 and open command forward;
- f. second device (314) becomes 2, opens command forward and reports back;
- g. first device (313) receives the report in back direction not for it so it sends it backward; T/IB2014/000260
- LMU (311) receives the report sign 2 as OK and send command to device 0
- LMU (311) send a command to CU(k) to do or report something
Abstract
The present invention provides a method for communicating and addressing photovoltaic (PV) solar cell panels in a solar cell panel string for ensuring the efficient operation of a photovoltaic (PV) solar cell system, comprising the steps of: sending commands from a string concentrating element to the first smart diode connected in parallel with a photovoltaic (PV) solar cell panel in a string, said photovoltaic (PV) solar cell panel being connected in series a plurality of photovoltaic (PV) solar cell panel wherein a first photovoltaic (PV) solar cell panel of the solar cell panel string has the lowest voltage and a last photovoltaic (PV) solar cell panel of the solar cell panel string has the highest voltage; wherein said smart diode element connected in parallel with said photovoltaic (PV) solar cell panel, wherein the outlet of said smart diode is connected to inlet of a photovoltaic (PV) solar cell panel in said solar cell panel string and the inlet of said smart diode is connected to outlet of a photovoltaic (PV) solar cell panel; said first smart diode sends a signal back to said string concentrator; said string concentrator receives said signal from said first smart diode and send an additional different command; and a second smart diode connected in parallel with a further photovoltaic (PV) solar cell panel in said solar cell panel string receives said additional command.
Description
METHOD AND APPARATUS FOR COMMUNICATION AND
ADDRESSING COMPONENTS OF DC POWER SOURCE ARRAYS
Field
The present invention relates to the field of DC power source strings. More particularly, the invention relates to a method and apparatus for
communication and addressing components of DC power source arrays.
Background
Many electric energy production techniques (energy generation/conversion techniques) utilize energy generation modules of DC power sources including multiplicity of electric energy producing cells connected to each other in series and/or in parallel connections. Generally, the operation of the cell is in accordance with a Current- Voltage curve (i.e. I- V curve) characteristic of the cell. The I-V curve characterizes the operation of the energy producing cell for a given cell (for example, in case of a photovoltaic cell, defined by the cell's dimensions and materials, e.g. single- / poly- crystalline silicon, amorphous silicon, CDTE and other materials) and for certain operation conditions of the cell, e.g. determined by the operational temperature of a photovoltaic cell (which might affect its efficiency) and the amount of input energy to be converted by the cell to electric energy.
A multitude of energy producing cells connected in series to one another, generally termed a cell string or string, provides electric output having certain electric current which equally flows within all the cells of the string. The output
voltage of such string is the sum of voltages, generated by each of the cells in accordance with the corresponding I-V curves of the cells and with said certain electric current which flows through the cells of the string. In other words, each cell is constrained to operate at a certain fixed point along its I-V curve which is determined in accordance with the value of said certain current. Said certain current is, in turn, dependent on the electric load on the entire cell string. Typical energy generation module includes an arrangement of multiple cell strings arranged in parallel electrical connection with respect to one another such that the output currents from the so-connected cell strings are accumulated. Fig. 1 illustrates schematically the known "central inverter" configuration of a solar power system (module) 100. The system 100 includes two cell strings 107a and 107b including respectively multitude of photovoltaic cells also referred to herein as solar panels 101 electrically connected in series to each other. The number of cells 101 in each string (107a, 107b) is designed to provide sufficiently high output voltage from each of the strings (107a, 107b). This is because efficient conversion from the DC electricity produced by the cells (101) into typical standard network AC voltages (e.g. of about 100V, 120V, 240V or 480V AC) requires relatively high input DC voltage (about several hundreds of volts DC should be provided as input to the inverter). Typical cell strings include multiple solar panels, and the number and type(s) of which are selected such as to provide high DC output voltage from the string (of about 400 or 600 volt). The cell strings 107a and 107b are electrically connected, in parallel forming a parallel arrangement 107 having output electrical current being the total electric current
from the strings. The number of strings in such arrangement is dictated by the required current output from the solar power system 100. Such energy generation module 100 has a corresponding I-V curve associated with the IV curves of all the cell strings in the module, while the I-V curve of a string is associated with the I- V curves of the individual cells and with the nature of the electric connection between the cells of the strings. In such a module, due to the parallel connection between the cell strings, the cell strings are forced to operate with a similar output voltage. Ideally the maximal power (energy) is collected from the multiple cells when all the cells operate at its maximal power point. In accordance with the "central inverter" architecture, the arrangement 107 of strings is connected to a DC to AC inverter 103 through a Maximal Power Point Tracker (MPPT) 105 unit. The latter is aimed at maximizing the total output power from the module. Typically, a single MPPT unit is used to maximize the energy yield from the entire module by controlling a point (operational point), at which the module operates along its I-V curve by controlling the load (resistance) on the strings and thus controlling their common output voltage and the total output current therethrough.
The output voltage of each string is a sum of the output voltages of the cells of the string. Each of the cells in the string is associated with a bypass diode 109 which enables current along the string to bypass the cell associated therewith. This allows operation of the string even if at least one of its cells malfunctions (e.g. cells having high resistance or cells which operate under shaded light conditions and thus are incapable of providing the required current).
The bypass diodes actually operate to totally neutralize malfunctioning or "weak" cells (which cannot produce the current value that flows along the string). In order to avoid back current flow when parallel connected strings produce different voltages, each string is associated with a blocking diode 106 at the end of every serial string. MPPT 105 operates to choose an I/V operation point of the parallel arrangement 107 which produces maximum DC power. MPPT units may be associated with individual cells and/or individual strings (rather than using a single MPPT for all the strings as described above). For example, US Patent Publication 2008/0143188 discloses a system and method for combining power from DC power sources using MPPT units associated with the power sources respectively. In this system, each power source is coupled to a converter. Each converter converts input power to output power by monitoring and maintaining the input power at a maximum power point. Substantially all input power is converted to the output power, and the controlling is performed by allowing output voltage of the converter to vary. The converters are coupled in series. An inverter is connected in parallel with the series connection of the converters and inverts a DC input to the converters into an AC output. The inverter maintains the voltage at the inverter input at a desirable voltage by varying the amount of the current drawn from the converters. The current and the output power of the converters, determine the output voltage at each converter.
Situations can take place where the output of a cell or cells or DC power source(s) drops below its nominal level. In such a situation, it would be helpful to
determine to location of the cell or cells or DC power source(s) the output of which has dropped below its nominal level.
It would therefore be desirable to provide a method and apparatus for communicating between the various cells or DC power sources of a string of DC power sources.
It is an additional object of the present invention to provide a method of and apparatus for addressing the cells or DC power sources of a string of DC power sources or of an array of cells or DC power sources of a string of DC power sources.
Other objects and advantages of the invention will become apparent as the description proceeds.
Summary
The present invention provides a method for communicating and addressing photovoltaic (PV) solar cell panels in a solar cell panel string for ensuring the efficient operation of a photovoltaic (PV) solar cell system, comprising the steps of: sending commands from a string concentrating element to the first smart diode connected in parallel with a photovoltaic (PV) solar cell panel in a string, said photovoltaic (PV) solar cell panel being connected in series a plurality of photovoltaic (PV) solar cell panel wherein a first photovoltaic (PV) solar cell panel of the solar cell panel string has the lowest voltage and a last photovoltaic (PV) solar cell panel of the solar cell panel string has the highest voltage; wherein said smart diode element connected in parallel with said
photovoltaic (PV) solar cell panel, wherein the outlet of said smart diode is connected to inlet of a photovoltaic (PV) solar cell panel in said solar cell panel string and the inlet of said smart diode is connected to outlet of a photovoltaic (PV) solar cell panel; said first smart diode sends a signal back to said string concentrator; said string concentrator receives said signal from said first smart diode and send an additional different command; and a second smart diode connected in parallel with a further photovoltaic (PV) solar cell panel in said solar cell panel string receives said additional command.
The present invention further comprises a communication and addressing system for a photovoltaic (PV) solar cell panels in a solar cell panel string for ensuring the efficient operation of a photovoltaic (PV) solar cell system, comprising: a string concentrating element for sending a command to a first smart diode connected in parallel with a photovoltaic (PV) solar cell panel in a string, said photovoltaic (PV) solar cell panel being connected in series a plurality of photovoltaic (PV) solar cell panel wherein a first photovoltaic (PV) solar cell panel of the solar cell panel string has the lowest voltage and a last photovoltaic (PV) solar cell panel of the solar cell panel string has the highest voltage; wherein said smart diode element connected in parallel with said photovoltaic (PV) solar cell panel, wherein the outlet of said smart diode is connected to inlet of a photovoltaic (PV) solar cell panel in said solar cell panel string and the inlet of said smart diode is connected to outlet of a photovoltaic (PV) solar cell panel; a connection for said string concentrator to receive a signal back from said first smart diode; a further connection for said
string concentrator so that said string concentrator send an additional different command; and said connection to said string concentrator transmits said additional command so that a second smart diode connected in parallel with a further photovoltaic (PV) solar cell panel in said solar cell panel string receives said additional command.
Brief Description of the Drawings
In the drawings:
- Fig. 1 is a schematic illustration of the conventional central inverter configuration of a solar power system;
- Fig. 2 shows a string of solar panels according to an embodiment of the present invention; and
- Fig. 3 shows an array of strings of solar panels according to a further embodiment of the present invention.
Detailed Description of Preferred Embodiments
The present invention provides a novel method for communicating with components of DC power source system such as solar cells or panels, battery cells, fuel cells, etc. In addition, a novel method addressing the components of DC power source system such as solar cells or panels, battery cells, fuel cells, etc. is also provided.
The system of the present invention comprises combinations of 2 basic units:
a communication unit (CU) - capable of communicating forward and backward, detecting instructions relates to it, sending massages, resetting and setting its own address and blocking the forward communication; and
a line management unit (LMU) - capable of communicating forward, detecting instructions relates to it, sending instructions to manage its own line and resetting and setting its own address.
Referring to Fig. 2, the line / string addressing procedure is described and is carried out as follows:
a. LMU (311), shown as string concentrator (SC) in Fig. 2, sends a command to all components in the line(s) 315 to reset address and block command forward; b. LMU (311) sends command to device 0 (313), shown as a smart diode (SD) to become 1 and open command forward;
c. first device 313 becomes 1, open command forward and reports back;
d. LMU (311) receives the report sign 1 as OK and send command to device (313) 0 to become 2 and open command forward;
e. first device (313) is now 1 so the instruction is not for it just forward the
instruction.
f. second device (314) becomes 2, opens command forward and reports back;
g. first device (313) receives the report in back direction not for it so it sends it backward;
T/IB2014/000260
- 9 - h. LMU (311) receives the report sign 2 as OK and send command to device 0
(313) to become 3 and opens command forward;
i. this process repeats itself until there is no reply from CU(i) which means that the line contains i-1 CUs.
Once addressing has been carried out, the following line / string monitoring and control procedure takes place:
a. LMU (311) send a command to CU(k) to do or report something;
b. all the CUs receive the command, forward it and check if it is for
them;
c. the CU(k) identifies the command, executes and report back with its address;
d. all CUs between CU(k) and the LMU sends the report back; and e. LMU (311) receives the report, analyzes it and stores it if needed.
An additional hierarchy field addressing procedure is carried out described with reference to Fig. 3:
a. main computer 503 (MC) 's LMU (111) runs the "line / string
addressing procedure" for the line of SC or line concentrator (LC) elements 513 in front of it:
1. number of elements in front and their types (SC
or LC) is stored in the main computer 503.
2. first level devices are addressed,
b. MC 103 commands i+1 level addressing:
1. all SCs (511) /LCs (513) at i level run "line / string addressing procedure" to the line of SC (511), LC (513) or SD (313, see Fig. 2) elements in front of it:
i. 1+1 level devices are addressed;
ii. number of elements and their types [SC (511), LC (513) or SD (513, see Fig. 2] is stored in all I level devices and
transmitted to be stored in MC (503). c. if all devices at level I are SD (313, see Fig. 2), END otherwise permit b. of hierarchy field addressing procedure to be carried out. Furthermore, hierarchy field monitoring and control procedure is carried out once addressing is done:
a. field command:
1. broadcast command flows forward in parallel at all levels to all directions from the MC (503) to all devices in field 501.
2. device specific command got an address per level and flow only through the right devices from a higher level device to a specific lower level device in its field zone.
3. reports flows back from specific device to higher specific device in the hierarchy while collecting
the addresses of the source at each level. For
example, panel 306 on string 315 in segment 502 (see Fig. 3) will send its panel number from SD (313), LC 513 (see Fig. 3) will string number and LC 513 (see Fig. 3) will add the segment number. If there are higher levels, they are treated the same way.
While some embodiments of the invention have been described by way of illustration, it will be apparent that the invention can be carried out with many modifications, variations and adaptations, and with the use of numerous equivalents or alternative solutions that are within the scope of persons skilled in the art, without exceeding the scope of the claims.
Claims
1. A method for communicating and addressing photovoltaic (PV) solar cell panels in a solar cell panel string for ensuring the efficient operation of a photovoltaic (PV) solar cell system, comprising the steps of:
a) sending commands from a string concentrating element to a first smart diode connected in parallel with a photovoltaic (PV) solar cell panel in a string, said photovoltaic (PV) solar cell panel being connected in series a plurality of photovoltaic (PV) solar cell panel wherein a first photovoltaic (PV) solar cell panel of the solar cell panel string has the lowest voltage and a last photovoltaic (PV) solar cell panel of the solar cell panel string has the highest voltage;
b) wherein said smart diode element connected in parallel with said photovoltaic (PV) solar cell panel, wherein the outlet of said smart diode is connected to inlet of a photovoltaic (PV) solar cell panel in said solar cell panel string and the inlet of said smart diode is connected to outlet of a photovoltaic (PV) solar cell panel
c) said first smart diode sends a signal back to said string concentrator; d) said string concentrator receives said signal from said first smart diode and send an additional different command; and
e) a second smart diode connected in parallel with a further photovoltaic (PV) solar cell panel in said solar cell panel string receives said additional command.
2. The method according to claim 1 further including:
a) sending a still different command from said string concentrating element;
b) a third smart diode connected in parallel with an additional photovoltaic (PV) solar cell panel in said solar cell panel string receives said additional command.
3. A communication and addressing system for a photovoltaic (PV) solar cell panels in a solar cell panel string for ensuring the efficient operation of a photovoltaic (PV) solar cell system, comprising:
a) a string concentrating element for sending a command to a first smart diode connected in parallel with a photovoltaic (PV) solar cell panel in a string, said photovoltaic (PV) solar cell panel being connected in series a plurality of photovoltaic (PV) solar cell panel wherein a first photovoltaic (PV) solar cell panel of the solar cell panel string has the lowest voltage and a last photovoltaic (PV) solar cell panel of the solar cell panel string has the highest voltage;
b) wherein said smart diode element connected in parallel with said photovoltaic (PV) solar cell panel, wherein the outlet of said smart diode is connected to inlet of a photovoltaic (PV) solar cell panel in
said solar cell panel string and the inlet of said smart diode is connected to outlet of a photovoltaic (PV) solar cell panel;
c) a connection for said string concentrator to receive a signal back from said first smart diode;
d) a further connection for said string concentrator so that said string concentrator send an additional different command; and e) said connection to said string concentrator transmits said additional command so that a second smart diode connected in parallel with a further photovoltaic (PV) solar cell panel in said solar cell panel string receives said additional command.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL241291A IL241291A0 (en) | 2013-03-07 | 2015-09-07 | Method and apparatus for communication and addressing components of dc power source arrays |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201361774335P | 2013-03-07 | 2013-03-07 | |
| US61/774,335 | 2013-03-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2014135957A2 true WO2014135957A2 (en) | 2014-09-12 |
| WO2014135957A3 WO2014135957A3 (en) | 2014-11-27 |
Family
ID=51492062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2014/000260 WO2014135957A2 (en) | 2013-03-07 | 2014-03-06 | Method and apparatus for communication and addressing components of dc power source arrays |
Country Status (2)
| Country | Link |
|---|---|
| IL (1) | IL241291A0 (en) |
| WO (1) | WO2014135957A2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060162772A1 (en) * | 2005-01-18 | 2006-07-27 | Presher Gordon E Jr | System and method for monitoring photovoltaic power generation systems |
| US20100154858A1 (en) * | 2008-12-21 | 2010-06-24 | Babu Jain | System and method for selectively controlling a solar panel in segments |
| US20120229161A1 (en) * | 2011-03-11 | 2012-09-13 | E-Lightric, Inc. | Method For Detecting Underperforming Solar Wafers In A Solar Panel or Underperforming Solar Panel in a Solar Array |
-
2014
- 2014-03-06 WO PCT/IB2014/000260 patent/WO2014135957A2/en active Application Filing
-
2015
- 2015-09-07 IL IL241291A patent/IL241291A0/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060162772A1 (en) * | 2005-01-18 | 2006-07-27 | Presher Gordon E Jr | System and method for monitoring photovoltaic power generation systems |
| US20100154858A1 (en) * | 2008-12-21 | 2010-06-24 | Babu Jain | System and method for selectively controlling a solar panel in segments |
| US20120229161A1 (en) * | 2011-03-11 | 2012-09-13 | E-Lightric, Inc. | Method For Detecting Underperforming Solar Wafers In A Solar Panel or Underperforming Solar Panel in a Solar Array |
Non-Patent Citations (1)
| Title |
|---|
| 'SM74611 Smart Bybass Diode. Datasheet' TEXAS INSTRUMENTS, [Online] 2012, Retrieved from the Internet: <URL:http://www.ti.com/lit/ds/snvs903/snvs903.pdf> [retrieved on 2014-08-05] * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014135957A3 (en) | 2014-11-27 |
| IL241291A0 (en) | 2015-11-30 |
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