CN116094453A - Multi-port solar module with controllable phase and adjusting method thereof - Google Patents

Multi-port solar module with controllable phase and adjusting method thereof Download PDF

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CN116094453A
CN116094453A CN202211489666.9A CN202211489666A CN116094453A CN 116094453 A CN116094453 A CN 116094453A CN 202211489666 A CN202211489666 A CN 202211489666A CN 116094453 A CN116094453 A CN 116094453A
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power generation
output
phase
pwm generator
solar module
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安荣邦
赵乘骥
安坤钰
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Jinan University
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Jinan University
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/30—Electrical components
    • H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • 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

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  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The invention discloses a multi-port solar module with controllable phase and an adjusting method thereof, wherein the module comprises a plurality of power generation areas; the power generation areas are respectively connected with the PWM generator, the power generation areas are not electrically connected with each other, and the component ports corresponding to the power generation areas are connected with a load; the power generation module is used for converting light energy into electric energy; the impedance matching circuit is used for receiving the on-off pulse output by the PWM generator and adjusting the output impedance and the phase of the output end. By adopting the embodiment of the invention, the phase and the on-off time of the output voltage of the power generation area are regulated through the impedance matching circuit, so that the output impedance is regulated to realize impedance matching, and the power generation efficiency is improved.

Description

Multi-port solar module with controllable phase and adjusting method thereof
Technical Field
The invention relates to the field of solar energy, in particular to a phase-controllable multiport solar module and an adjusting method thereof.
Background
The global climate is rapidly worsened, the frequency of non-renewable energy sources such as natural gas, coal, petroleum and the like is urgent, and when the energy source problem becomes the bottleneck restricting the international social economic development increasingly, the development of solar energy resources becomes a new power for seeking economic development. Renewable energy is a major goal. Under the promotion of the huge potential of the international photovoltaic market, the solar energy industry of each country is rapidly developed. There is no exception in China. At present, photovoltaic construction is well-developed, and large-scale power stations are rapidly growing. However, with the large-scale expansion of photovoltaic power plants, the operation of photovoltaic power plants is particularly important. How to make the photovoltaic power station generate more power and longer power generation time becomes a core problem. In the prior art, the power generation modules are arranged in a serial-parallel connection mode, so that the power generation potential of all the power generation modules in the solar module cannot be fully exerted, and the overall power generation efficiency is more determined by one module with the worst performance; meanwhile, in the current photovoltaic system, only simple electrical connection is performed between the areas of each solar module, and the influence of the phase difference between the areas in the solar module on the energy efficiency of the system is not considered.
Disclosure of Invention
The invention provides a phase-controllable multiport solar module and an adjusting method thereof, which are used for solving the technical problem of low power generation efficiency caused by electrical connection relation and unaccounted phase difference of the existing solar module.
In order to solve the above technical problems, an embodiment of the present invention provides a phase-controllable multi-port solar module, including: a plurality of power generation areas;
the power generation areas are respectively connected with the PWM generator, the power generation areas are not electrically connected with each other, and a plurality of component ports corresponding to the power generation areas are connected with a load;
the power generation areas comprise power generation modules and impedance matching circuits; the power generation module is connected with a first input end of the impedance matching circuit, a second input end of the impedance matching circuit is connected with the PWM generator, and an output end of the impedance matching circuit is connected with a load;
the power generation module is used for converting light energy into electric energy;
the impedance matching circuit is used for receiving the on-off pulse output by the PWM generator and adjusting the output impedance and the phase of the output end according to the on-off pulse.
The power generation areas are independently connected with the PWM generator, and are not in electrical connection with each other; the phase and the on-off time of the output voltage of the power generation area can be adjusted by combining the impedance matching circuit according to the working signal output by the processor and the on-off pulse of the PWM generator, so that the output impedance is adjusted to realize impedance matching, and the power generation efficiency is improved.
Further, the impedance matching circuit comprises a switching tube, a diode and an inductor;
the first end of the switching tube is connected with the power generation module;
the second end of the switching tube is connected with the cathode of the diode and the first end of the inductor;
the control end of the switching tube is connected with the PWM generator;
the second end of the inductor is connected with the first end of the load;
the anode of the diode is connected with the second end of the load.
According to the invention, the phase of the output voltage and the output resistance of the power generation area are regulated and controlled through the switching tube, and the power generation is performed by combining the inductance for storing the electric energy, so that the matching of the internal impedance and the external impedance of the power generation area is realized, and the power generation efficiency is improved.
Further, the impedance matching circuit further includes: a first capacitor;
the first end of the first capacitor is connected with the first ends of the power generation module and the switching tube;
the second end of the first capacitor is connected with the power generation module and circuit ground.
Further, the impedance matching circuit further includes: a second capacitor;
the first end of the second capacitor is connected with the second end of the inductor and the first end of the load;
the second end of the second capacitor is connected with the anode of the diode and the second end of the load.
The first capacitor and the second capacitor in the invention play a role of a filter capacitor, can reduce the alternating current ripple coefficient and improve the working performance of a power generation area.
Further, the adjusting the output impedance according to the on-off pulse specifically includes:
and according to the on-off pulse, adjusting the on-time of the switching tube and changing the output impedance so as to realize the impedance matching of the inside and the outside of the component port.
Further, the PWM generator is connected with the processor; the PWM generator is used for receiving the working signal of the processor and outputting on-off pulse with a required duty ratio to the impedance matching circuit according to the working signal so as to adjust the phase of the output end of the impedance matching circuit.
On the other hand, the embodiment of the invention also provides a method for adjusting the phase-controllable multi-port solar module, which is applied to the phase-controllable multi-port solar module in any one of the embodiments of the invention, and comprises the following steps:
according to the port power generation conditions of the power generation areas, working signals are sent to a PWM generator, and the output impedance of the power generation areas and the phase of the output end of the power generation areas are adjusted by changing the duty ratio of on-off pulse of the PWM generator.
Further, the sending a working signal to a PWM generator according to the port power generation conditions of the plurality of power generation areas, and adjusting the output impedance of the power generation areas and the phase of the output end of the power generation areas by changing the duty ratio of the on-off pulse of the PWM generator, includes:
when the internal resistance of the power generation unit is reduced along with the increase of the illumination intensity, or the internal resistance of the power generation unit is increased along with the decrease of the illumination intensity, the working signal is regulated and sent to the PWM generator, so that the PWM generator can match the output impedance with the load impedance by regulating the duty ratio and the phase of the output on-off pulse according to the working signal.
When the illumination intensity changes, the processor can be used for sending a working signal to the PWM generator so that the PWM generator can adjust the output impedance of the power generation area through the on-off pulse, and further, the impedance matching between the inside and the outside of the power generation area is realized, and the power generation efficiency is improved.
Further, the step of sending a working signal to a PWM generator according to the port power generation conditions of the plurality of power generation areas and the port power generation conditions of the plurality of power generation areas, and adjusting the output impedance of the power generation areas and the phase of the output end of the power generation areas by changing the duty ratio of the on-off pulse of the PWM generator, further includes:
when one or more of the power generation areas are damaged, the phase of the on-off pulse output by the PWM generator is adjusted according to the working signal, so that the output voltages of the rest power generation areas form a vector closed loop.
Further, the forming a vector closed loop specifically includes: and vectors corresponding to the output voltages are connected end to form a closed loop.
When an individual power generation area is damaged, the processor adjusts the phases of output voltages of other power generation areas through the PWM generator, and maintains a preset phase relation so as to maximize the output power and improve the power generation efficiency.
Drawings
FIG. 1 is a schematic diagram of a prior art phase controllable multi-port solar module of a solar power station;
FIG. 2 is a schematic diagram of the power generation capability of a conventional solar module;
FIG. 3 is a schematic diagram of the actual power generation capacity of a conventional solar module;
FIG. 4 is a schematic diagram of an embodiment of a phase-controllable multi-port solar module according to the present invention;
FIG. 5 is a schematic diagram of the actual power generation capability of the phase-controllable multi-port solar module according to the present invention;
FIG. 6 is a schematic diagram of the on-off time of the switching tube of the phase controllable multi-port solar module according to the present invention;
FIG. 7 is a schematic view of an embodiment of a power generation region provided by the present invention;
FIG. 8 is a schematic diagram of output voltages of a power generation region provided by the present invention;
FIG. 9 is a schematic diagram of an embodiment of an equivalent circuit of a power generation region provided by the present invention;
FIG. 10 is a schematic diagram of another embodiment of an equivalent circuit of a power generation region according to the present invention;
fig. 11 is a vector diagram of the output voltage of the power generation region according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a schematic diagram of an existing phase-controllable multiport solar module of a solar power station is shown, wherein 1 is a solar power generation silicon wafer, or other power generation material units, and the following is the same; 2 is a conductive connecting wire which connects different silicon chips together in series-parallel connection; 3 is the output port. After all solar modules are connected together, they are output via output port 3, wherein output port 3 is typically a junction box.
However, the power generation capacity of each power generation silicon wafer inside the solar module is not the same, even for the same manufacturer, the same lot, and the power generation capacities of these modules are not the same. Referring to fig. 2, a schematic diagram of the power generation capability of a conventional solar module is shown, in which five power generation modules are used to represent the differences of the power generation modules inside the power generation solar module. And does not represent only 5 power generation modules per solar module. In fig. 2, the power generation capacities of the modules 1 to 5 are not the same; wherein, the height of the rectangular frame of 2-1,2-2,2-3,2-4,2-5 represents the power generation capacity of different power generation modules, and the higher the height of the rectangular frame is, the stronger the power generation capacity is. If the connection relationship inside the solar module is as shown in fig. 1, the power generation potential of all the power generation modules inside the solar module cannot be fully utilized, and the overall power generation efficiency is more determined by the module with the worst performance; the power generation capacity of the entire solar module is thus shown in fig. 3. Fig. 3 is a schematic diagram of actual power generation capacity of an existing solar module, and an area of a hatched portion corresponds to power generation capacity of the entire photovoltaic solar module. Because the power generation capacity of the solar module is more relatively determined by a module with the worst power generation capacity, the power generation potential of the photovoltaic solar module is not fully exerted; meanwhile, in the existing photovoltaic system, the solar modules are simply and electrically connected, and the influence of the phase difference among the solar modules on the energy efficiency of the system is not considered. The present invention provides a phase-controllable multi-port solar module for solving the above problems.
Example 1
Referring to fig. 4, a schematic structural diagram of an embodiment of a phase-controllable multi-port solar module according to the present invention includes: a plurality of power generation areas.
The power generation areas are respectively connected with the PWM generator, the power generation areas are not electrically connected with each other, and a plurality of component ports corresponding to the power generation areas are connected with a load;
the power generation areas comprise power generation modules and impedance matching circuits; the power generation module is connected with a first input end of the impedance matching circuit, a second input end of the impedance matching circuit is connected with the PWM generator, and an output end of the impedance matching circuit is connected with a load;
the power generation module is used for converting light energy into electric energy;
the impedance matching circuit is used for receiving the on-off pulse output by the PWM generator and adjusting the output impedance and the phase of the output end according to the on-off pulse.
In this embodiment, the phase-controllable multiport solar module comprises a plurality of power generation regions, each of which is independently connected to the PWM generator without electrical connection to each other; referring to fig. 6, a schematic diagram of on-off time of a switching tube of a phase-controllable multi-port solar module according to the present invention is shown, where a PWM generator can output on-off pulses with different duty ratios and phases for different power generation areas; in fig. 6, t1, t2, t3 and t4 are four independent time parameters, which respectively represent the on-times of the switching tubes represented by 5-5 to 5-8 in fig. 5, and are independent of each other.
Referring to fig. 5, a schematic diagram of actual power generation capacity of the phase-controllable multi-port solar module according to the present invention is shown, in which a processor may send a working signal to a PWM generator according to power generation conditions of respective output ports of each power generation region, so as to realize impedance balance of each power generation region, prevent the phase-controllable multi-port solar module from being limited by minimum power generation capacity of a certain power generation region, and achieve maximization of output power.
In the present embodiment, the phase controllable multi-port solar module of fig. 4 includes 4 power generation regions, but in actual cases, the power generation regions may be less than 4 or more than 4, and the number of power generation regions may be set according to the required power generation amount and cost.
In this embodiment, the power generation module includes a plurality of power generation modules, each of which is connected to each other and to the impedance matching circuit through the same port; fig. 4 shows ports 5-1 to 5-4 where four power generation modules are connected to an impedance matching circuit.
Referring to fig. 7, a schematic structural diagram of an embodiment of a power generation area according to the present invention mainly includes: a switching tube Q1, a diode D1 and an inductance L1.
The first end of the switching tube Q1 is connected with the power generation module;
the second end of the switching tube Q1 is connected with the cathode of the diode D1 and the first end of the inductor L1;
the control end of the switching tube Q1 is connected with the PWM generator;
the second end of the inductor L1 is connected with the first end of the load;
the anode of the diode D1 is connected with the second end of the load.
In this embodiment, the processor sends working signals including different working parameters to the PWM generator, so that the PWM outputs on-off pulses with different duty ratios and phases to the switching tube Q1, and the output impedance of the power generation area is adjusted by the impedance matching circuit, so as to achieve the purpose of maximum power matching.
According to the invention, the phase of the output voltage and the output resistance of the power generation area are regulated and controlled through the switching tube Q1, and the power is generated by combining the inductor L1 for storing electric energy, so that the matching of the internal and external impedance of the power generation area is realized, and the power generation efficiency is improved.
Further, the impedance matching circuit further includes: a first capacitor C1;
the first end of the first capacitor C1 is connected with the first ends of the power generation module and the switching tube Q1;
the second end of the first capacitor C1 is connected with the power generation module and circuit ground.
Further, the impedance matching circuit further includes: a second capacitor C2;
the first end of the second capacitor C2 is connected with the second end of the inductor L1 and the first end of the load;
the second end of the second capacitor C2 is connected with the anode of the diode D1 and the second end of the load.
The first capacitor C1 and the second capacitor C2 in the invention play a role of a filter capacitor, so that the alternating current ripple coefficient can be reduced, and the working performance of a power generation area can be improved.
Further, the adjusting the output impedance according to the on-off pulse specifically includes:
and according to the on-off pulse, the on-time of the switching tube Q1 is regulated, and the output impedance is changed, so that the internal and external impedance matching of the component ports is realized.
Referring to FIG. 8, an output voltage diagram of a power generation region according to the present invention is shown, wherein 0 to T represent the on time of the switching transistor Q1, T to T 0 The time when the switching tube Q1 is turned off or turned off; 0 to T 0 Representing a duty cycle.
Referring to fig. 9, a schematic structural diagram of an embodiment of an equivalent circuit of a power generation region according to the present invention is shown, wherein the equivalent circuit is an equivalent circuit during a turn-on period or an turn-on period of a switching tube Q1; u (U) P Is the output voltage of the photovoltaic module, R P Is equivalent internal resistance of the photovoltaic module, R L Is a load; furthermore, I RL Indicating flow through load R L Current at R L Is of a constant value, I RL The larger the representation load R L The more power is obtained. When the switching tube Q1 is turned on or opened, the current flowing through the load is:
Figure BDA0003964413650000081
at time 0 to t, the power dissipated on the load is:
Figure BDA0003964413650000082
referring to fig. 10, a schematic structural diagram of another embodiment of an equivalent circuit of a power generation area provided by the present invention, wherein the equivalent circuit is an equivalent circuit when a switching tube Q1 is turned off or turned off, and at time t, a current flowing through a load is:
Figure BDA0003964413650000083
further, from time T to any time T, the power consumed on the load is:
Figure BDA0003964413650000084
from the above, the whole period, i.e. from time 0 to T 0 At that moment, the power consumed on the load is:
Figure BDA0003964413650000085
wherein the condition for obtaining maximum power on the load during the whole cycle is that
Figure BDA0003964413650000086
The power on the load over the whole cycle is thus derived and made zero, resulting in an equation with t as variable:
Figure BDA0003964413650000087
wherein the equation has a solution within the set of t > 0. When R is P When the power is changed, the RL is constant, so that the equation in the equation can be established by adjusting t, and the maximum power output is realized.
Further, the switching tube Q1 is an NMOS tube; the first end of the switching tube Q1 is a drain electrode, the second end of the switching tube Q1 is a source electrode, and the control end of the switching tube Q1 is a gate electrode.
According to the invention, an NMOS tube can be used as the switching tube Q1, and the working performance of the power generation process in the power generation area is further improved due to the fact that the input impedance of the MOS tube is higher and the driving power is smaller.
Further, the PWM generator is connected with the processor; the PWM generator is used for receiving the working signal of the processor and outputting on-off pulse with a required duty ratio to the impedance matching circuit according to the working signal so as to adjust the phase of the output end of the impedance matching circuit.
In this embodiment, the processor is configured to send a working signal to the PWM generator according to the port power generation conditions of the plurality of power generation areas, so as to adjust the duty ratio of the on-off pulse.
In this embodiment, the processor may be an MCU.
In this embodiment, the optional processor includes, but is not limited to, an MCU, but may also be a CPU or other microprocessor.
On the other hand, the embodiment of the invention also provides a method for adjusting the phase-controllable multi-port solar module, which is applied to the phase-controllable multi-port solar module according to the embodiment of the invention and comprises the following steps:
according to the port power generation conditions of the power generation areas, working signals are sent to a PWM generator, and the output impedance of the power generation areas and the phase of the output end of the power generation areas are adjusted by changing the duty ratio of on-off pulse of the PWM generator.
Further, the sending a working signal to a PWM generator according to the port power generation conditions of the plurality of power generation areas, and adjusting the output impedance of the power generation areas and the phase of the output end of the power generation areas by changing the duty ratio of the on-off pulse of the PWM generator, includes:
when the internal resistance of the power generation unit is reduced along with the increase of the illumination intensity, or the internal resistance of the power generation unit is increased along with the decrease of the illumination intensity, the working signal is regulated and sent to the PWM generator, so that the PWM generator can match the output impedance with the load impedance by regulating the duty ratio and the phase of the output on-off pulse according to the working signal.
In the embodiment, when the illumination is strong, the solar module generates more power, the photovoltaic effect of the power generation area is obvious, and the internal resistance of the photovoltaic effect is reduced; at the same time, the switching tube Q1 is turned on or off for a longer time, and more energy is pumped into the inductor L1, which is the switching-in time side of the small impedance from the impedance transformation point of view. When the illumination is weakened, the impedance transformation process is opposite to that when the illumination is strengthened, and the access time of the large impedance is shortened. The on-off pulse is regulated by the working signal, so that the purposes of matching the internal impedance and the external impedance of the power generation area, namely the load impedance, and outputting the maximum power can be realized under both conditions.
Further, the step of sending a working signal to a PWM generator according to the port power generation conditions of the plurality of power generation areas and the port power generation conditions of the plurality of power generation areas, and adjusting the output impedance of the power generation areas and the phase of the output end of the power generation areas by changing the duty ratio of the on-off pulse of the PWM generator, further includes:
when one or more of the power generation areas are damaged, the phase of the on-off pulse output by the PWM generator is adjusted according to the working signal, so that the output voltages of the rest power generation areas form a vector closed loop.
The photovoltaic cell generates electricity by means of photovoltaic effect, and the photoelectric conversion efficiency decreases with the increase of charge accumulation between the anode and the cathode of the photovoltaic cell. Therefore, when the photovoltaic cell works, the charge generated by the photoelectric effect is conducted away in time, which is important for power generation, namely photoelectric conversion efficiency. In practical photovoltaic systems, most photovoltaic modules operate in an alternating current manner due to the need for impedance matching. In this embodiment, compared to the existing solar module, the present embodiment may output more power through not only smaller granularity of power matching, but also phase coordination between different ports of the same phase controllable multi-port solar module or output ends of different power generation areas. When more power is output, positive and negative particles generated by the photoelectric effect can be efficiently conducted away, so that the photovoltaic module can be ensured to work continuously and efficiently.
In the present embodiment, the same solar power generation device is taken as an example, and the same applies to the ports of different solar power generation devices. It is assumed that a module has N outputs, each of which is not electrically connected to each other inside the module. The output ends are connected in series or in parallel, and are provided with MPPT circuits, the clocks of the impedance matching circuits of the ports are the same, and the impedance matching is realized by combining the on-off pulse of the PWM generator with the impedance matching circuits. Then for the fundamental, the total power output by each port is:
P＝[A 1 cos(ωt+θ 1 )+ 2 cos(ωt+θ 2 )+…+ n cos(ωt+θ n )] 2 /R L ；
wherein P is the total output power, A i cos(ωt+θ i ) Is the electric energy output by the ith port, A i Is the voltage amplitude, theta i Is the initial phase. i=1, 2, …, n;
when the illumination intensity changes, the processor can be used for sending a working signal to the PWM generator so that the PWM generator can adjust the output impedance of the power generation area through the on-off pulse, and further, the impedance matching between the inside and the outside of the power generation area is realized, and the power generation efficiency is improved.
When P '=0, the output power of the phase controllable multi-port solar module is maximum, and the expression of P' is:
Figure BDA0003964413650000111
if the expression of P' is 0, the sum of each item in any bracket is only required to be zero; wherein the two vector sets in brackets have the same magnitude and differ by 90 °. Referring to fig. 11, a schematic vector diagram of output voltage of a power generation region according to the present invention is shown, where the forming of a vector closed loop specifically includes: vectors corresponding to the output voltages are connected end to form a closed loop; left to right in fig. 11 is a vector diagram of the maximum output power condition when the number of output ends i is equal to 3, 4, and 5, respectively.
When an individual power generation area is damaged, the processor adjusts the phases of output voltages of other power generation areas through the PWM generator, and maintains a preset phase relation so as to maximize the output power and improve the power generation efficiency.
Compared with the existing phase-controllable multiport solar module, the multi-port solar module has the advantages that more power output is obtained through smaller granularity matching; the phase coordination among the output ends of the multi-port solar module with controllable phase or the output ends of the power generation areas further obtains more output; furthermore, when individual outputs or power generation regions are damaged or performance is degraded, the output power can be optimized again by adjusting the phase relationship between other power generation regions.
The power generation areas are independently connected with the PWM generator, and are not in electrical connection with each other; the phase and the on-off time of the output voltage of the power generation area can be adjusted by combining the impedance matching circuit according to the working signal output by the processor and the on-off pulse of the PWM generator, so that the output impedance is adjusted to realize impedance matching, and the power generation efficiency is improved.
The foregoing embodiments have been provided for the purpose of illustrating the general principles of the present invention, and are not to be construed as limiting the scope of the invention. It should be noted that any modifications, equivalent substitutions, improvements, etc. made by those skilled in the art without departing from the spirit and principles of the present invention are intended to be included in the scope of the present invention.

Claims (10)

1. A phase controllable multiport solar module comprising: a plurality of power generation areas;
the power generation areas are respectively connected with the PWM generator, the power generation areas are not electrically connected with each other, and a plurality of component ports corresponding to the power generation areas are connected with a load;
the power generation areas comprise power generation modules and impedance matching circuits; the power generation module is connected with a first input end of the impedance matching circuit, a second input end of the impedance matching circuit is connected with the PWM generator, and an output end of the impedance matching circuit is connected with a load;
the power generation module is used for converting light energy into electric energy;
the impedance matching circuit is used for receiving the on-off pulse output by the PWM generator and adjusting the output impedance and the phase of the output end according to the on-off pulse.
2. The phase controllable, multi-port solar module of claim 1, wherein the impedance matching circuit comprises a switching tube, a diode, and an inductance;
the first end of the switching tube is connected with the power generation module;
the second end of the switching tube is connected with the cathode of the diode and the first end of the inductor;
the control end of the switching tube is connected with the PWM generator;
the second end of the inductor is connected with the first end of the load;
the anode of the diode is connected with the second end of the load.
3. The phase controllable, multi-port solar module of claim 2, wherein the impedance matching circuit further comprises: a first capacitor;
the first end of the first capacitor is connected with the first ends of the power generation module and the switching tube;
the second end of the first capacitor is connected with the power generation module and circuit ground.
4. The phase controllable, multi-port solar module of claim 2, wherein the impedance matching circuit further comprises: a second capacitor;
the first end of the second capacitor is connected with the second end of the inductor and the first end of the load;
the second end of the second capacitor is connected with the anode of the diode and the second end of the load.
5. The phase controllable, multi-port solar module of claim 2, wherein the adjusting the output impedance according to the on-off pulse is specifically:
and according to the on-off pulse, adjusting the on-time of the switching tube and changing the output impedance so as to realize the impedance matching of the inside and the outside of the component port.
6. The phase controllable, multi-port solar module of any one of claims 1-5, wherein said PWM generator is coupled to a processor; the PWM generator is used for receiving the working signal of the processor and outputting on-off pulse with a required duty ratio to the impedance matching circuit according to the working signal so as to adjust the phase of the output end of the impedance matching circuit.
7. A method of conditioning a phase controllable multi-port solar module as claimed in any one of claims 1 to 6, comprising:
according to the port power generation conditions of the power generation areas, working signals are sent to a PWM generator, and the output impedance of the power generation areas and the phase of the output end of the power generation areas are adjusted by changing the duty ratio of on-off pulse of the PWM generator.
8. The method for adjusting a phase-controllable multi-port solar module according to claim 7, wherein the step of sending an operation signal to a PWM generator according to the port power generation conditions of the plurality of power generation areas, and adjusting the output impedance of the power generation areas and the phase of the output ends of the power generation areas by changing the duty ratio of the on-off pulses of the PWM generator comprises:
when the internal resistance of the power generation unit is reduced along with the increase of the illumination intensity, or the internal resistance of the power generation unit is increased along with the decrease of the illumination intensity, the working signal is regulated and sent to the PWM generator, so that the PWM generator can match the output impedance with the load impedance by regulating the duty ratio and the phase of the output on-off pulse according to the working signal.
9. The method for adjusting a phase-controllable multi-port solar module according to claim 7, wherein the step of sending an operation signal to a PWM generator according to the port power generation conditions of the power generation regions, and adjusting the output impedance of the power generation region and the phase of the output end of the power generation region by changing the duty ratio of the on-off pulse of the PWM generator further comprises:
when one or more of the power generation areas are damaged, the phase of the on-off pulse output by the PWM generator is adjusted according to the working signal, so that the output voltages of the rest power generation areas form a vector closed loop.
10. The method for tuning a phase-controllable multiport solar module according to claim 9, wherein said forming a vector closed loop is in particular: and vectors corresponding to the output voltages are connected end to form a closed loop.
CN202211489666.9A 2022-11-25 2022-11-25 Multi-port solar module with controllable phase and adjusting method thereof Pending CN116094453A (en)

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