CN103257593A - Numerical physical hybrid simulation system of grid-connected photovoltaic power generating system - Google Patents
Numerical physical hybrid simulation system of grid-connected photovoltaic power generating system Download PDFInfo
- Publication number
- CN103257593A CN103257593A CN2013102078720A CN201310207872A CN103257593A CN 103257593 A CN103257593 A CN 103257593A CN 2013102078720 A CN2013102078720 A CN 2013102078720A CN 201310207872 A CN201310207872 A CN 201310207872A CN 103257593 A CN103257593 A CN 103257593A
- Authority
- CN
- China
- Prior art keywords
- photovoltaic array
- digital
- photovoltaic
- current
- shade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Photovoltaic Devices (AREA)
- Control Of Electrical Variables (AREA)
Abstract
A numerical physical hybrid simulation system of a grid-connected photovoltaic power generating system comprises an RTDS digital system, a DSP physical system, an analog quantity output card and a digital quantity input card, wherein a direct-current voltage signal and a direct-current current signal which are output by a photovoltaic cell panel in the RTDS digital system are transmitted and input to the DSP physical system through the analog quantity output card, and a PWM pulse driving a boost chopper circuit in the DSP physical system is transmitted and input to the RTDS digital system through the digital quantity input card. The numerical physical hybrid simulation system can accurately track the global maximum power point in a local shadow, a standby circuit is needless, the system is suitable for various extreme light conditions, and result accuracy and reliability are improved.
Description
Technical field
What invention related to is a kind of digital physical mixed analogue system of grid-connected photovoltaic system, is based on RTDS (Real Time Digital Simulator) platform and possesses the digital physical mixed real-time emulation system of MPPT maximum power point tracking under the local shade (MPPT) function.
Background technology
Along with power system development, traditional Digital Simulation or Physical Experiment emulation all have been difficult to describe some new problems that electric system faces, particularly along with the rise of high-power electric and electronic element, digital physical mixed emulation has seemed more and more important.Digital-to-analogue hybrid simulation can integrated digital emulation and the advantage of Physical Experiment, solves the problems that present electric system runs into.Photovoltaic generation is a kind of important renewable energy, has become the key areas that electric system simulation is analyzed for the photovoltaic power generation grid-connecting systematic research.
In the large-scale photovoltaic grid-connected system, be difficult to when photovoltaic battery panel is more guarantee that all cell panels have best illumination condition, local shade can make the P-V curve of photovoltaic array present the multimodal characteristic, thus the algorithm that the power points that has the greatest impact is followed the tracks of.Under actual conditions, the energy loss that takes place because of local shade situation in some photovoltaic systems may be up to 70%.Therefore, study photovoltaic array characteristic under the local shade situation and the meaning of maximum power point algorithm and seem particularly important.
Summary of the invention
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, a kind of digital physical mixed analogue system of grid-connected photovoltaic system is provided, can improve simulation accuracy and confidence level, make photovoltaic parallel in system accurately track maximum power point, avoid energy loss.
Technical solution of the present invention is as follows:
A kind of digital physical mixed analogue system of grid-connected photovoltaic system, its characteristics are that this system comprises RTDS digital display circuit, DSP physical system, analog output unit (GTAO) and digital quantity input card (GTDI); DC voltage and the dc current signal of the photovoltaic battery panel output in the described RTDS digital display circuit are conveyed into the DSP physical system through analog output unit, and the road pwm pulse that drives the copped wave booster circuit in the DSP physical system is conveyed into the RTDS digital display circuit through the digital quantity input card.
Described RTDS digital display circuit comprises the photovoltaic array, copped wave booster circuit, inverter circuit and the electrical network that connect successively.Photovoltaic system can be realized basic maximal power tracing, the control function is incorporated into the power networks.
Described DSP physical system comprises MPPT controller and copped wave PWM controller, this MPPT controller receives DC voltage and the dc current signal of the photovoltaic array output in the RTDS digital display circuit, and the output modulation signal is given copped wave PWM controller, copped wave PWM controller output pwm pulse.
Maximum power point tracing method under a kind of local shade, its characteristics are that this method comprises the steps:
The first step has judged whether to take place the situation that shade covers according to the voltage and current of photovoltaic array;
Second step when local shade takes place, then made the photovoltaic array working point move to working point C from the B point, and formula is as follows:
The voltage that C is ordered
Open-circuit voltage V wherein
OcAWith short-circuit current I
ScADetermined by photovoltaic array itself, be constant, and photovoltaic array working current I
BBy real-time measurement gained;
In the 3rd step, utilize maximum power point tracing method accurately to seek maximum power point.
The described first step has judged whether to take place the situation that shade covers according to the voltage and current of photovoltaic array, and concrete grammar is as follows;
At first obtain the electric current I when photovoltaic array is operated in maximum power point under the situation of shadow-free homogeneous illumination
Amax, the photovoltaic array working current of actual measurement is I at present
A
If Δ I=I
Amax-I
A＜K
1, then photovoltaic array is not subjected to the shade covering,
If Δ I=I
Amax-I
A＞K
1, then photovoltaic array has been subjected to the shade covering;
Wherein, K
1It is the constant of setting.
Compared with prior art, technical characterstic of the present invention is: set up parallel network power generation numeral physical mixed real-time emulation system, the MPPT method that adopts in the system can accurately track global maximum power point under local shade, need not adjunct circuit, and be applicable to multiple extreme light conditions.Owing to adopted the means of digital physical mixed real-time simulation, make that degree of accuracy and confidence level all are improved as a result.
Description of drawings
Fig. 1 is photovoltaic parallel in system structural representation of the present invention.
Fig. 2 is digital physical mixed system construction drawing of the present invention.
Fig. 3 is photovoltaic array characteristic synoptic diagram under the local shade of the present invention.
Fig. 4 is the synoptic diagram of MPPT method under the local shade of the present invention, (a) is the I-U curve, (b) is the P-U curve.
Fig. 5 is the process flow diagram of MPPT method under the local shade of the present invention.
Embodiment
The invention will be further described below in conjunction with embodiment and accompanying drawing, but should not limit protection scope of the present invention with this.
A kind of digital physical mixed analogue system of grid-connected photovoltaic system is characterized in that, this system comprises RTDS digital display circuit, DSP physical system, analog output unit (GTAO) and digital quantity input card (GTDI); DC voltage and the dc current signal of the photovoltaic battery panel output in the described RTDS digital display circuit are conveyed into the DSP physical system through analog output unit, and the road pwm pulse that drives the copped wave booster circuit in the DSP physical system is conveyed into the RTDS digital display circuit through the digital quantity input card.
Specific operation process of the present invention is as follows:
The first step, in the RTDS system, build the pure digi-tal realistic model of photovoltaic system, as shown in Figure 1, comprise photovoltaic array, copped wave booster circuit, inverter circuit, filtering part, electrical network part and relevant control strategy thereof, photovoltaic system can be realized basic maximal power tracing, the control function is incorporated into the power networks.
Build digital physical mixed system.As shown in Figure 2, the part of building among the RTDS is digital display circuit, and DSP is physical system, and both connect by communication interface, namely constitutes digital physical mixed system.Digital display circuit is mainly carried out the simulation of whole photovoltaic system characteristic, and physical system is carried out MPPT maximum power point tracking and calculated.The DSP physical system comprises maximal power tracing (MPPT) controller and copped wave PWM controller, this MPPT controller receives DC voltage and the dc current signal of the photovoltaic array output in the RTDS digital display circuit, and the output modulation signal is given copped wave PWM controller, copped wave PWM controller output pwm pulse.
Second step, write the communication interface between digital display circuit and the physical system, GTAO (analog quantity output) card and GTDI (digital quantity input) card that use RTDS to carry, the GTAO card sends the output quantity (electric current and voltage of photovoltaic array) of digital display circuit to physical system as input quantity, and the GTDI card sends the output quantity (PWM ripple) of physical system to digital display circuit as input quantity.By GTAO card and GTDI card the RTDS digital display circuit is constituted digital physics loop with the physics dsp system, form the hardware-in-loop simulation platform, realize the interactive communication of digital display circuit and physical system.
Being implemented as follows of communication interface:
Write the interface with PERCOM peripheral communication in RTDS, the GTAO that carries with it (analog quantity output) card and GTDI (digital quantity input) card are supporting, realize the interactive communication of digital display circuit and physical system.The amount that needs to send to DSP physics control panel in the RTDS digital display circuit has dc voltage and current, the DC bus-bar voltage of photovoltaic array output, and these variablees all send the DSP control panel to by the GTAO card.The GTAO card is the supporting analog output unit of RTDS.GTAO calorie requirement 24V power supply, the D/A conversion of 16 precision, can export 12 the tunnel+/-analog quantity of 10V, the output channel employing cycle is the synchronism that the over-sampling mode of 1us guarantees output channel.
The amount that physical system DSP control panel need send the RTDS digital display circuit to has the road pwm pulse that drives copped wave booster circuit IGBT, sends the RTDS system to by the GTDI card.The GTDI card is the supporting digital quantity input card of RTDS.GTDI calorie requirement 24V power supply provides 64 tunnel digital quantity input channels of isolating, and can the identification switch frequency be up to the pwm signal of 15kHz.
By GTAO card and GTDI card the RTDS digital display circuit is constituted digital physics loop with the physics dsp system, form the hardware-in-loop simulation platform.
The 3rd step, in the physics dsp system, write maximum power point tracing method under the local shade, make DSP to calculate according to the semaphore that collects from the RTDS digital display circuit, judge the position of global maximum power point.
The method of MPPT is as follows under the local shade:
1. the optimization maximal power tracing basic idea under the local shade is the B point of working point from Fig. 3 of photovoltaic array will be moved near the C point when local shade takes place.In order to reach this target, need to realize following points:
1) voltage and current according to photovoltaic array has judged whether to take place the situation that shade covers;
2) if local shade takes place, then make the photovoltaic array working point move to the working point C that is calculated by linear function from the B point;
3) after the photovoltaic array working point moves near the C point, use traditional maximum power tracking method and accurately seek maximum power point.
2. judge whether photovoltaic array is subjected to the condition that shade hides and is: at first obtain the electric current I when photovoltaic array is operated in maximum power point under the situation of shadow-free homogeneous illumination
Amax, the photovoltaic array working current of actual measurement is I at present
A, if Δ I=I
Amax-I
A＜K
1, then photovoltaic array is not subjected to the shade covering; If Δ I=I
Amax-I
A＞K
1, then photovoltaic array has been subjected to the shade covering.K wherein
1Be the constant of setting, set K usually
1Be I
Amax1/5～1/4, I wherein
AmaxCharacteristic by photovoltaic array itself determines.Here the shade of indication covering may be the situation that local shade takes place photovoltaic array, also may be the shade covering that photovoltaic array is subjected to overall homogeneous.Because no matter which kind of situation takes place, the working current of photovoltaic array all can be undergone mutation.
When photovoltaic array was subjected to the shade covering, operating voltage can not undergone mutation, and working current can produce sudden change.As shown in Figure 4, photovoltaic array is operated in the A point under the situation that homogeneous illumination shadow-free covers, and operating voltage is V
A, the situation of local shade takes place after photovoltaic array V-I curve change, this moment, the operating voltage of photovoltaic array can not undergone mutation, and still was V
A, working current sports I
B, by open-circuit voltage V
OcAWith short-circuit current I
ScAThe linear function that obtains calculates
Open-circuit voltage V wherein
OcAWith short-circuit current I
ScADetermined by photovoltaic array itself, be constant, and photovoltaic array working current I
BBy real-time measurement gained.Adjusting Boost contactor dutycycle then makes the photovoltaic array operating voltage move closer to V
C
3. the method flow of MPPT under the local shade, as shown in Figure 7.
The operating voltage V of maximum power point when making that by configuration switch dutycycle initial value photovoltaic array is operated in homogeneous illumination shadow-free in the time of program initialization
0, the photovoltaic array electric current and voltage V of collection current time
n, I
n, calculate Δ I=|I
Max-I
n|.Setting threshold K
1(I
Amax1/5～1/4) detect the photovoltaic array electric current and whether suddenly change, if Δ I＜K
1, illustrate that then photovoltaic array is not subjected to shade and covers, directly adopt the conductance increment method to seek maximum power point and get final product; If Δ I＞K
1, then the situation that shade covers has taken place in explanation, calculates Δ V=|V
C-V
n|, adjust Boost contactor dutycycle K and make the photovoltaic array operating voltage move closer to V
CSet constant K
2, be generally V
OcA1/1000～1/500, V wherein
OcADetermined by the parameter of photovoltaic array own.Whether detect the photovoltaic array operating voltage near V
CMethod be: judge whether to satisfy Δ I＞K
1And Δ V＞K
2, if satisfy, then continue to adjust K and make V
nNear V
CIf do not satisfy, illustrate that then photovoltaic array has been operated in V
CNear or the photovoltaic array electric current near I
Max, directly adopt this moment the conductance increment method to seek maximum power point.
The 4th step, physics DSP sends the copped wave boost circuit switch dutycycle of pwm pulse control RTDS digital display circuit, allow photovoltaic system according to the present invention in the MPPT method carry out work, make the digital physical mixed analogue system of grid-connected photovoltaic system of the present invention under local shade situation, to track global maximum power point.
Claims (5)
1. the digital physical mixed analogue system of a grid-connected photovoltaic system is characterized in that, this system comprises RTDS digital display circuit, DSP physical system, analog output unit (GTAO) and digital quantity input card (GTDI); DC voltage and the dc current signal of the photovoltaic battery panel output in the described RTDS digital display circuit are conveyed into the DSP physical system through analog output unit, and the road pwm pulse that drives the copped wave booster circuit in the DSP physical system is conveyed into the RTDS digital display circuit through the digital quantity input card.
2. the digital physical mixed analogue system of grid-connected photovoltaic system according to claim 1 is characterized in that, described RTDS digital display circuit comprises the photovoltaic array, copped wave booster circuit, inverter circuit and the electrical network that connect successively.
3. the digital physical mixed analogue system of grid-connected photovoltaic system according to claim 1, it is characterized in that, described DSP physical system comprises MPPT controller and copped wave PWM controller, this MPPT controller receives DC voltage and the dc current signal of the photovoltaic array output in the RTDS digital display circuit, and the output modulation signal is given copped wave PWM controller, copped wave PWM controller output pwm pulse.
4. maximum power point tracing method under the local shade is characterized in that this method comprises the steps:
The first step has judged whether to take place the situation that shade covers according to the voltage and current of photovoltaic array;
Second step when local shade takes place, then made the photovoltaic array working point move to working point C from the B point, and formula is as follows:
The voltage that C is ordered
Open-circuit voltage V wherein
OcAWith short-circuit current I
ScADetermined by photovoltaic array itself, be constant, and photovoltaic array working current I
BBy real-time measurement gained;
In the 3rd step, utilize maximum power point tracing method accurately to seek maximum power point.
5. maximum power point tracing method under the local shade according to claim 4 is characterized in that, the described first step has judged whether to take place the situation that shade covers according to the voltage and current of photovoltaic array, and concrete grammar is as follows;
At first obtain the electric current I when photovoltaic array is operated in maximum power point under the situation of shadow-free homogeneous illumination
Amax, the photovoltaic array working current of actual measurement is I at present
A
If Δ I=I
Amax-I
A＜K
1, then photovoltaic array is not subjected to the shade covering,
If Δ I=I
Amax-I
A＞K
1, then photovoltaic array has been subjected to the shade covering;
Wherein, K
1It is the constant of setting.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102078720A CN103257593A (en) | 2013-05-30 | 2013-05-30 | Numerical physical hybrid simulation system of grid-connected photovoltaic power generating system |
| CN201510497495.8A CN105137808A (en) | 2013-05-30 | 2015-08-13 | Maximum power point tracking method in partial shadow based on photovoltaic grid-connected power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102078720A CN103257593A (en) | 2013-05-30 | 2013-05-30 | Numerical physical hybrid simulation system of grid-connected photovoltaic power generating system |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510497495.8A Division CN105137808A (en) | 2013-05-30 | 2015-08-13 | Maximum power point tracking method in partial shadow based on photovoltaic grid-connected power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103257593A true CN103257593A (en) | 2013-08-21 |
Family
ID=48961571
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102078720A Pending CN103257593A (en) | 2013-05-30 | 2013-05-30 | Numerical physical hybrid simulation system of grid-connected photovoltaic power generating system |
| CN201510497495.8A Pending CN105137808A (en) | 2013-05-30 | 2015-08-13 | Maximum power point tracking method in partial shadow based on photovoltaic grid-connected power generation system |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510497495.8A Pending CN105137808A (en) | 2013-05-30 | 2015-08-13 | Maximum power point tracking method in partial shadow based on photovoltaic grid-connected power generation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN103257593A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103488822A (en) * | 2013-09-06 | 2014-01-01 | 南方电网科学研究院有限责任公司 | Real-time simulation method and device for water turbine regulating system |
| CN104298127A (en) * | 2014-10-11 | 2015-01-21 | 浙江大学 | Micro-grid semi-digital semi-physical real-time simulation system based on RT-LAB |
| CN104330980A (en) * | 2014-11-03 | 2015-02-04 | 中国科学院广州能源研究所 | RT-LAB based microgrid simulation testing system |
| CN104950693A (en) * | 2015-06-23 | 2015-09-30 | 广州供电局有限公司 | Method and system for improving simulation accuracy of controller HIL (hardware-in-the-loop) simulation system |
| CN105182791A (en) * | 2015-07-31 | 2015-12-23 | 南方电网科学研究院有限责任公司 | RTDS-based digital-physical hybrid simulation system of photovoltaic power generation system |
| CN105305466A (en) * | 2014-06-26 | 2016-02-03 | �林昌明 | Photovoltaic-energy storage combined power generation integrated energy management system |
| CN105373009A (en) * | 2015-11-12 | 2016-03-02 | 中国人民解放军国防科学技术大学 | Renewable energy system simulation test and semi-physical simulation system |
| CN105375517A (en) * | 2015-11-12 | 2016-03-02 | 上海交通大学 | Photovoltaic grid-connected generation system for achieving maximum power point tracking of photovoltaic assemblies in any lighting condition |
| CN105549420A (en) * | 2015-12-22 | 2016-05-04 | 南京南瑞集团公司 | Real-time simulation test method of direct-driving draught-fan variable flow control system |
| CN105652950A (en) * | 2015-08-17 | 2016-06-08 | 国家电网公司 | Photovoltaic maximum power point tracing control and simulation method based on RR-LAB |
| CN107340798A (en) * | 2017-06-25 | 2017-11-10 | 何金昌 | A kind of solar power generation MPPT control devices and method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594927B (en) * | 2018-06-05 | 2021-07-13 | 湘潭大学 | Local shadow photovoltaic array MPPT control based on random frog-leaping global search algorithm |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10322907A (en) * | 1997-05-22 | 1998-12-04 | Mitsubishi Electric Corp | Power system simulator |
| CN101799688A (en) * | 2010-04-12 | 2010-08-11 | 东南大学 | Wind power generation semi-physical simulation test platform |
| CN102510087A (en) * | 2011-11-22 | 2012-06-20 | 云南电力试验研究院（集团）有限公司电力研究院 | Micro-grid experimental system based on hybrid simulation platform |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2796987C (en) * | 2010-04-26 | 2015-12-01 | Queen's University At Kingston | Maximum power point tracking for a power generator |
| CN101873090B (en) * | 2010-07-06 | 2012-07-18 | 太原科技大学 | Maximal power output optimization and control method for partially sheltered photovoltaic system |
| JP2012028435A (en) * | 2010-07-21 | 2012-02-09 | Hitachi Ltd | Photovoltaic power generation system |
| CN102608413B (en) * | 2012-04-26 | 2014-05-14 | 上海交通大学 | Method and device for detecting maximum power point of photovoltaic power generation |
-
2013
- 2013-05-30 CN CN2013102078720A patent/CN103257593A/en active Pending
-
2015
- 2015-08-13 CN CN201510497495.8A patent/CN105137808A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10322907A (en) * | 1997-05-22 | 1998-12-04 | Mitsubishi Electric Corp | Power system simulator |
| CN101799688A (en) * | 2010-04-12 | 2010-08-11 | 东南大学 | Wind power generation semi-physical simulation test platform |
| CN102510087A (en) * | 2011-11-22 | 2012-06-20 | 云南电力试验研究院（集团）有限公司电力研究院 | Micro-grid experimental system based on hybrid simulation platform |
Non-Patent Citations (1)
| Title |
|---|
| 孟超等: "《光伏和储能并网物理数字混合仿真实验系统方案》", 《电力系统自动化》 * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103488822A (en) * | 2013-09-06 | 2014-01-01 | 南方电网科学研究院有限责任公司 | Real-time simulation method and device for water turbine regulating system |
| CN105305466A (en) * | 2014-06-26 | 2016-02-03 | �林昌明 | Photovoltaic-energy storage combined power generation integrated energy management system |
| CN104298127A (en) * | 2014-10-11 | 2015-01-21 | 浙江大学 | Micro-grid semi-digital semi-physical real-time simulation system based on RT-LAB |
| CN104298127B (en) * | 2014-10-11 | 2017-01-18 | 浙江大学 | Micro-grid semi-digital semi-physical real-time simulation system based on RT-LAB |
| CN104330980A (en) * | 2014-11-03 | 2015-02-04 | 中国科学院广州能源研究所 | RT-LAB based microgrid simulation testing system |
| CN104330980B (en) * | 2014-11-03 | 2017-04-05 | 中国科学院广州能源研究所 | A kind of micro-capacitance sensor emulation test system based on RT LAB |
| CN104950693A (en) * | 2015-06-23 | 2015-09-30 | 广州供电局有限公司 | Method and system for improving simulation accuracy of controller HIL (hardware-in-the-loop) simulation system |
| CN104950693B (en) * | 2015-06-23 | 2018-03-27 | 广州供电局有限公司 | Improve the method and system of controller hardware assemblage on-orbit simulation accuracy |
| CN105182791A (en) * | 2015-07-31 | 2015-12-23 | 南方电网科学研究院有限责任公司 | RTDS-based digital-physical hybrid simulation system of photovoltaic power generation system |
| CN105652950A (en) * | 2015-08-17 | 2016-06-08 | 国家电网公司 | Photovoltaic maximum power point tracing control and simulation method based on RR-LAB |
| CN105375517A (en) * | 2015-11-12 | 2016-03-02 | 上海交通大学 | Photovoltaic grid-connected generation system for achieving maximum power point tracking of photovoltaic assemblies in any lighting condition |
| CN105373009A (en) * | 2015-11-12 | 2016-03-02 | 中国人民解放军国防科学技术大学 | Renewable energy system simulation test and semi-physical simulation system |
| CN105549420A (en) * | 2015-12-22 | 2016-05-04 | 南京南瑞集团公司 | Real-time simulation test method of direct-driving draught-fan variable flow control system |
| CN107340798A (en) * | 2017-06-25 | 2017-11-10 | 何金昌 | A kind of solar power generation MPPT control devices and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105137808A (en) | 2015-12-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103257593A (en) | Numerical physical hybrid simulation system of grid-connected photovoltaic power generating system | |
| Fathabadi | Novel solar powered electric vehicle charging station with the capability of vehicle-to-grid | |
| Reisi et al. | Classification and comparison of maximum power point tracking techniques for photovoltaic system: A review | |
| Abdulkadir et al. | Modelling and simulation of maximum power point tracking of photovoltaic system in Simulink model | |
| Linares et al. | Improved energy capture in series string photovoltaics via smart distributed power electronics | |
| Mahdi et al. | Improvement of a MPPT algorithm for PV systems and its experimental validation | |
| Iqbal et al. | Design and simulation of a PV System with battery storage using bidirectional DC-DC converter using Matlab Simulink | |
| CN104104112B (en) | MPPT control method for the photovoltaic combining inverter of two-stage topologies | |
| Fathabadi | Novel fast and high accuracy maximum power point tracking method for hybrid photovoltaic/fuel cell energy conversion systems | |
| CN104638668B (en) | A kind of photovoltaic power generation grid-connecting control method and system | |
| CN104753057A (en) | Seamless switching method for running modes of photovoltaic power generation unit in direct-current microgrid | |
| Murdianto et al. | Modeling and simulation of mppt-bidirectional using adaptive neuro fuzzy inference system (ANFIS) in distributed energy generation system | |
| CN102496953A (en) | Photovoltaic power generation micro electric network system and maximum power tracking method | |
| CN103914097A (en) | Method for quickly tracking maximum power point of photovoltaic power generation system | |
| CN105608244A (en) | Distributed photovoltaic power generation system equivalent simulation model based on PSCAD (Power System Computer Aided Design)/EMTDC (Electromagnetic Transient Including DC) | |
| CN105785281A (en) | Photovoltaic grid-connected inverter MPPT (maximum power point tracking) efficiency test method and device | |
| CN108181966B (en) | Photovoltaic multimodal MPP rapid tracking method based on voltage-power scanning | |
| CN102437794A (en) | solar photovoltaic MPPT control system | |
| CN107968433B (en) | Direct-current topological structure for improving utilization efficiency of photovoltaic inverter and control method | |
| CN107544610B (en) | A kind of photovoltaic MPPT control method based on MPP voltage regulation and gradient search | |
| Mechouma et al. | Multicarrier wave dual reference very low frequency PWM control of a nine levels NPC multi-string three phase inverter topology for photovoltaic system connected to a medium electric grid | |
| CN109871061A (en) | A kind of photovoltaic generating system maximal power tracing control strategy | |
| CN103198191B (en) | Based on the permanent magnet direct-drive Wind turbines simulation model system of PSCAD | |
| Xiaoliu et al. | Low voltage ride-through test for two-level photovoltaic grid-connected inverter based on RT-LAB | |
| CN104866002A (en) | Mixed type maximum power point tracing control method based on Beta parameter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130821 |