CN102043419A - Maximum power point tracking (MPPT) method of currentless sensor - Google Patents

Maximum power point tracking (MPPT) method of currentless sensor Download PDF

Info

Publication number
CN102043419A
CN102043419A CN2009102045275A CN200910204527A CN102043419A CN 102043419 A CN102043419 A CN 102043419A CN 2009102045275 A CN2009102045275 A CN 2009102045275A CN 200910204527 A CN200910204527 A CN 200910204527A CN 102043419 A CN102043419 A CN 102043419A
Authority
CN
China
Prior art keywords
sign
mppt
disturbance
cycle
photovoltaic array
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.)
Granted
Application number
CN2009102045275A
Other languages
Chinese (zh)
Other versions
CN102043419B (en
Inventor
古俊银
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
INVOLAR Corp Ltd
Original Assignee
INVOLAR Corp Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by INVOLAR Corp Ltd filed Critical INVOLAR Corp Ltd
Priority to CN200910204527.5A priority Critical patent/CN102043419B/en
Publication of CN102043419A publication Critical patent/CN102043419A/en
Application granted granted Critical
Publication of CN102043419B publication Critical patent/CN102043419B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers

Landscapes

  • Photovoltaic Devices (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

The invention discloses a maximum power point tracking (MPPT) method of a currentless sensor, belonging to the technical field of new energy. In the method, because the ripple of voltages on a capacitor between a photovoltaic array and a convertor during the dynamic transition process comprises the information of the output power of the photovoltaic array, the variation direction of the output power of the photovoltaic array can be obtained by calculating the variation value of the voltages of the capacitor after two continuous MPPT periods so as to track the maximum power point of the photovoltaic array. Compared with the common MPPT method, the method provided by the invention has the advantages that the variation direction of the output power of the photovoltaic array can be judged without a current sensor, the maximum power point can be accurately tracked, the system cost is lowered, and the system reliability is improved, thereby having certain practical value. Thus, the method provided by the invention has wide application prospect in the aspect of new energy power generation, especially in solar power generation.

Description

A kind of maximum power point tracing method of no current sensor
Technical field
The present invention relates to a kind of maximum power point tracing method, relate in particular to a kind of maximum power point tracing method of no current sensor, belong to technical field of new energies, particularly field of photovoltaic power generation.
Technical background
Photovoltaic array is the core and the critical component of solar photovoltaic generation system.According to the I-V characteristic of solar cell as can be known, all there is maximum power point in solar cell when different sun light intensity and battery temperature, therefore in order to make full use of the output energy of solar cell, bring into play the effectiveness of solar cell to greatest extent, must make photovoltaic array be operated in maximum power point constantly, promptly need to adopt the MPPT maximum power point tracking technology.
Several MPPT methods commonly used at present mainly contain: constant voltage process, disturbance observation (P﹠amp; O, Perturbationand Observation) also claims climbing method (Hill Climbing) etc.Its operating voltage V when the constant voltage tracing is utilized the photovoltaic array Maximum Power Output PVWith open-circuit voltage V OcExist approximate these characteristics of proportionate relationship to control, it is actually MPPT control is reduced to voltage stabilizing control, and the MPPT maximum power point tracking device is reduced to a voltage stabilizer, realizes MPPT approx.Advantages such as it is simple that the constant voltage tracing has control, and reliability height and rapidity are good, but its shortcoming is no automatic following function, and control accuracy is poor, is not MPPT truly.The disturbance observation is operating voltage or the electric current that changes photovoltaic array every the regular hour, and 2 output power value finally was stabilized near the maximum power point to change the direction of regulation voltage before and after Real Time Observation relatively changed.The present various disturbance observations that are seen in document all need to detect simultaneously the voltage and current of photovoltaic array, and according to the change direction of photovoltaic array power, the increase and decrease of decision voltage or current disturbing reaches the purpose of tracking.Yet these methods have all been ignored an important information, are being in the dynamic transition process of chronomere with the MPPT cycle promptly, and the ripple of voltage has promptly comprised the information of photovoltaic array output power on the electric capacity.By calculating the changing value of continuous two MPPT week after date capacitance voltage, can obtain the change direction of photovoltaic array output power, and then realize MPPT maximum power point tracking.
Summary of the invention
The present invention is directed to the defective that exists in the MPPT maximum power point tracking technology in the background technology and a kind of low cost that proposes, high reliability, be applicable to the no current sensor maximum power point tracing method of generation of electricity by new energy occasion.
No current sensor maximum power point tracing method of the present invention, this method has comprised the information of the output power of photovoltaic array according to the ripple of voltage on the electric capacity between photovoltaic array in the dynamic transition process and the transducer, therefore by calculating the changing value of continuous two MPPT week after date capacitance voltage, can obtain the change direction of photovoltaic array output power, and then realize MPPT maximum power point tracking photovoltaic array.Compare with common MPPT method, this method does not need current sensor can judge the change direction of photovoltaic array output power, has realized MPPT maximum power point tracking exactly, has reduced the cost of system, improve the reliability of system, had certain practical value.Particularly have a wide range of applications in the solar electrical energy generation in generation of electricity by new energy.
For achieving the above object, the present invention has adopted a kind of maximum power point tracing method of no current sensor, and its technical scheme is characterised in that controlled step is as follows:
Step 1: as photovoltaic system maximal power tracing controller, detect t with microprocessor 0The voltage u of the electric capacity between moment photovoltaic array and the transducer 0
Step 2: at t 0Constantly apply disturbance, and be maintained until t always 0+ 2T constantly.T is the cycle of MPPT.This microprocessor detects t 0+ T, t 0+ 2T is capacitance voltage value u constantly 1, u 2
Step 3: the testing result according to step 2 is calculated u 2 2+ u 0 2-2u 1 2, calculate u 2-u 1
If sign (Δ p)=sign (u 2 2+ u 0 2-2u 1 2)
sign(Δu)＝sign(u 2-u 1)
Obtain two three value functions, promptly+1 ,-1,0.
Step 4:, judge and how to implement next step disturbance according to sign (Δ p) that calculates in the step 3 and the value of sign (Δ u).
Sign (Δ p)=1, sign (Δ u)=1, slope, a left side is up, the minimal negative disturbance;
Sign (Δ p)=0, sign (Δ u)=1, be failure to actuate in the left-to-right slope;
Sign (Δ p)=-1, sign (Δ u)=1, right slope is descending, is failure to actuate;
Sign (Δ p)=1, sign (Δ u)=0, normal direction rises, minimum positive disturbance;
Sign (Δ p)=0, sign (Δ u)=0, summit, minimal negative disturbance;
Sign (Δ p)=-1, sign (Δ u)=0, normal direction descends, minimum positive disturbance;
Sign (Δ p)=1, sign (Δ u)=-1, right slope is up, minimum positive disturbance;
Sign (Δ p)=0, sign (Δ u)=-1, right-to-left slope, minimal negative disturbance;
Sign (Δ p)=1, sign (Δ u)=-1, slope, a left side is descending, maximum negative disturbance;
Description of drawings
Fig. 1 is a no current sensor maximum power point tracing method process flow diagram of the present invention
Fig. 2 is the control structure figure of system of no current sensor maximum power point tracing method of the present invention.
Fig. 3 is the embodiment control structure synoptic diagram of the present invention under single stage type is incorporated into the power networks working condition.
Label declaration among Fig. 1-Fig. 3: u 0-t 0Capacitance voltage value constantly; u 1-t 0+ T capacitance voltage value constantly; u 2-t 0+ 2T capacitance voltage value constantly; The change direction of sign (Δ p)-photovoltaic array power; The change direction of sign (Δ u)-capacitance voltage; PV array-photovoltaic array; C Pv-electric capacity; u c-capacitance voltage; The mppt-MPPT maximum power point tracking; The PWM-width modulation.
Embodiment
No current sensor maximum power point tracing method process flow diagram of the present invention detects u as described in Figure 1 0, u 1, u 2The corresponding t of difference 0, t 0+ T, t 0+ 2T capacitance voltage value constantly.Make sign (Δ p)=u 2 2+ u 0 2-2u 1 2, sign (Δ u)=u 2-u 1, judge the direction that applies disturbance according to the value of sign (Δ p) and sign (Δ u).
Shown in Figure 2 is the control structure figure of system of no current sensor maximum power point tracing method of the present invention.Its theoretical foundation is the capacitor C in the dynamic transition process between solar cell and the transducer PvLast voltage u cRipple, comprised the information of the output power of photovoltaic array.By calculating the changing value of continuous two MPPT week after date capacitance voltage, can obtain the change direction of photovoltaic array output power, and then realize the MPPT maximum power point tracking of photovoltaic array output power.Compare with common MPPT method, this method does not need current sensor can judge the change direction of solar cell output power, has realized MPPT maximum power point tracking exactly, has reduced the cost of system, has improved the reliability of system.
In specific implementation process, has numerous embodiments according to transducer and load different.Be converter using single stage type inverter as shown in Figure 3, the embodiment control structure synoptic diagram of AC network is adopted in load.
Below with the realization of control structure schematic view illustrating technical scheme shown in Figure 3.Choose t 0Be the zero hour constantly, T is half of electrical network cycle, and this is because grid power
Figure B2009102045275D0000031
The cycle that changes is half of line voltage cycle.Get t 1=t 0+ T, t 2=t 0+ 2T.Carve at this moment and apply disturbance, and this disturbance is maintained until t always 2Constantly.If (t 0, t 1), (t 1, t 2) the output average power of photovoltaic array is p in the cycle 1, p 2And keep constant; t 0, t 1, t 2The voltage of electric capacity is respectively u constantly 0, u 1, u 2, the following energy balance relations of foundation:
∫ t t + T p 0 dt + 1 2 Cu 2 t + T - 1 2 Cu 2 t = Tp t - - - ( 1 )
Respectively to (t 0, t 1), (t 1, t 2) two cycles implement above-mentioned computing, obtain:
∫ t 0 t 0 + T p 0 dt + 1 2 Cu 2 1 - 1 2 Cu 2 0 = Tp 1 - - - ( 2 ) ∫ t 0 + T t 0 + 2 T p 0 dt + 1 2 Cu 2 2 - 1 2 Cu 2 1 = Tp 2 - - - ( 3 )
Because p 0With T is the cycle, so
Figure B2009102045275D0000041
With (2), (3) are subtracted each other and are obtained:
( p 2 - p 1 ) = C 2 T ( u 2 2 + u 0 2 - 2 u 1 2 ) - - - ( 4 )
(4) formula shows, the direction of photovoltaic array variable power can be reflected by capacitance voltage.Therefore as can be seen, the controlled quentity controlled variable of transducer is relevant with capacitance voltage among the present invention, by detecting capacitance voltage transducer is controlled, and can realize MPPT maximum power point tracking.Concrete steps are as follows:
Step 1: as photovoltaic system maximal power tracing controller, detect t with microprocessor 0The voltage u of the electric capacity between moment photovoltaic array and the transducer 0
Step 2: at t 0Constantly apply disturbance, and be maintained until t always 0+ 2T constantly.T is the cycle of MPPT.This microprocessor detects t 0+ T, t 0+ 2T is capacitance voltage value u constantly 1, u 2
Step 3: the testing result according to step 2 is calculated u 2 2+ u 0 2-2u 1 2, calculate u 2-u 1
If sign (Δ p)=sign (u 2 2+ u 0 2-2u 1 2)
sign(Δu)＝sign(u 2-u 1)
Obtain two three value functions, promptly+1 ,-1,0.
Step 4:, judge and how to implement next step disturbance according to sign (Δ p) that calculates in the step 3 and the value of sign (Δ u).
Sign (Δ p)=1, sign (Δ u)=1, slope, a left side is up, the minimal negative disturbance;
Sign (Δ p)=0, sign (Δ u)=1, be failure to actuate in the left-to-right slope;
Sign (Δ p)=-1, sign (Δ u)=1, right slope is descending, is failure to actuate;
Sign (Δ p)=1, sign (Δ u)=0, normal direction rises, minimum positive disturbance;
Sign (Δ p)=0, sign (Δ u)=0, summit, minimal negative disturbance;
Sign (Δ p)=-1, sign (Δ u)=0, normal direction descends, minimum positive disturbance;
Sign (Δ p)=1, sign (Δ u)=-1, right slope is up, minimum positive disturbance;
Sign (Δ p)=0, sign (Δ u)=-1, right-to-left slope, minimal negative disturbance;
Sign (Δ p)=1, sign (Δ u)=-1, slope, a left side is descending, maximum negative disturbance.

Claims (8)

1. the maximum power point tracing method of a no current sensor, it is characterized in that, only detect the capacitance voltage between photovoltaic array and the transducer, by the changing value of continuous two MPPT cycle capacitance voltages, the change direction that can reflect the photovoltaic array output power realizes MPPT maximum power point tracking.
2. the maximum power point tracing method of no current sensor as claimed in claim 1 is characterized in that controlled step is as follows:
Step 1: as photovoltaic system maximal power tracing controller, detect t with microprocessor 0The voltage u of the electric capacity between moment photovoltaic array and the transducer 0
Step 2: at t 0Constantly apply disturbance, and be maintained until t always 0+ 2T constantly.T is the cycle of MPPT.This microprocessor detects t 0+ T, t 0+ 2T is capacitance voltage value u constantly 1, u 2
Step 3: the testing result according to step 2 is calculated u 2 2+ u 0 2-2u 1 2, calculate u 2-u 1
If sign (Δ p)=sign (u 2 2+ u 0 2-2u 1 2)
sign(Δu)＝sign(u 2-u 1)
Obtain two three value functions, promptly+1 ,-1,0.
Step 4:, judge and how to implement next step disturbance according to sign (Δ p) that calculates in the step 3 and the value of sign (Δ u).
Sign (Δ p)=1, sign (Δ u)=1, slope, a left side is up, the minimal negative disturbance;
Sign (Δ p)=0, sign (Δ u)=1, be failure to actuate in the left-to-right slope;
Sign (Δ p)=-1, sign (Δ u)=1, right slope is descending, is failure to actuate;
Sign (Δ p)=1, sign (Δ u)=0, normal direction rises, minimum positive disturbance;
Sign (Δ p)=0, sign (Δ u)=0, summit, minimal negative disturbance;
Sign (Δ p)=-1, sign (Δ u)=0, normal direction descends, minimum positive disturbance;
Sign (Δ p)=1, sign (Δ u)=-1, right slope is up, minimum positive disturbance;
Sign (Δ p)=0, sign (Δ u)=-1, right-to-left slope, minimal negative disturbance;
Sign (Δ p)=1, sign (Δ u)=-1, slope, a left side is descending, maximum negative disturbance;
3. continuous two MPPT cycles as claimed in claim 1, should satisfy following condition, i.e. disturbance is implemented when first cycle begins, and is maintained to the second period end.
4. capacitance voltage as claimed in claim 1 is the mean value in a MPPT cycle.Can be synchronous with the period of change of transducer output power, also can be asynchronous.
5. the variation of photovoltaic array output power as claimed in claim 1 also is the mean value in a MPPT cycle.
6. transducer as claimed in claim 1 can be the single stage type transducer, also can be the multi-stag transducer.
7. in a MPPT cycle as claimed in claim 1, when the voltage in the load was of ac, the MPPT cycle can be half of alternating voltage cycle.When the voltage in the load during DC quantity, the MPPT cycle can be half or the integral multiple in DC voltage ripple cycle.
8. load as claimed in claim 7 can be an active load, as electrical network and accumulator; Also can be passive load, as resistance etc.
CN200910204527.5A 2009-10-09 2009-10-09 Maximum power point tracking (MPPT) method of currentless sensor Expired - Fee Related CN102043419B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200910204527.5A CN102043419B (en) 2009-10-09 2009-10-09 Maximum power point tracking (MPPT) method of currentless sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200910204527.5A CN102043419B (en) 2009-10-09 2009-10-09 Maximum power point tracking (MPPT) method of currentless sensor

Publications (2)

Publication Number Publication Date
CN102043419A true CN102043419A (en) 2011-05-04
CN102043419B CN102043419B (en) 2014-11-05

Family

ID=43909645

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200910204527.5A Expired - Fee Related CN102043419B (en) 2009-10-09 2009-10-09 Maximum power point tracking (MPPT) method of currentless sensor

Country Status (1)

Country Link
CN (1) CN102043419B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102508511A (en) * 2011-11-04 2012-06-20 西安龙腾新能源科技发展有限公司 Photovoltaic inverter MPPT control method based on power disturbance
CN102591399A (en) * 2012-02-02 2012-07-18 西安理工大学 Perturbation and observation method for tracking maximum power point of photovoltaic grid-connected generating system
EP2658109A1 (en) * 2012-04-27 2013-10-30 Samsung Electro-Mechanics Co., Ltd Power converting apparatus, operating method thereof, and solar power generation system
CN103677067A (en) * 2013-12-18 2014-03-26 深圳市金宏威技术股份有限公司 Maximum power point tracing realizing method and device and photovoltaic power generation system
CN103995561A (en) * 2014-05-28 2014-08-20 华为技术有限公司 Maximum power point tracing method and device
CN104578134A (en) * 2013-10-12 2015-04-29 南京南瑞继保电气有限公司 Tracking method and tracking system for maximum power point
CN104917458A (en) * 2015-05-22 2015-09-16 江苏固德威电源科技有限公司 Method and circuit for detecting output current in absence of sensor
CN105790617A (en) * 2014-11-28 2016-07-20 财团法人工业技术研究院 Control circuit of power converter and maximum power point tracking method
CN108268084A (en) * 2018-03-30 2018-07-10 惠安县大林智能科技有限公司 Maximum power point tracing method and the photovoltaic generating system for realizing MPPT outputs
CN109032238A (en) * 2018-07-27 2018-12-18 西交利物浦大学 Maximum electric power tracking based on Current Sensorless

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007039091A1 (en) * 2005-09-20 2007-04-12 Jean-Michel Cour « method and apparatus for charging a battery from a complex direct current source »
CN201001050Y (en) * 2006-11-27 2008-01-02 孙民兴 Solar electric source device of super capacitor
US20080141998A1 (en) * 2006-12-18 2008-06-19 Ming-Hsin Sun Maximum power point tracking system for the solar-supercapacitor power device and method using same
CN101248532A (en) * 2005-07-20 2008-08-20 益环科技公司 Photovoltaic power output and utilization device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101248532A (en) * 2005-07-20 2008-08-20 益环科技公司 Photovoltaic power output and utilization device
WO2007039091A1 (en) * 2005-09-20 2007-04-12 Jean-Michel Cour « method and apparatus for charging a battery from a complex direct current source »
CN201001050Y (en) * 2006-11-27 2008-01-02 孙民兴 Solar electric source device of super capacitor
US20080141998A1 (en) * 2006-12-18 2008-06-19 Ming-Hsin Sun Maximum power point tracking system for the solar-supercapacitor power device and method using same

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
KAZUTAKA ITAKO等: "A Current Sensorless MPPT Control Method for a Stand-Alone-Type PV Generation System", 《ELECTRICAL ENGINEERING IN JAPAN》 *
NOBUYUKI KASA等: "Flyback Inverter Controlled by Sensorless Current MPPT for Photovoltaic Power System", 《IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS》 *
闵江威: "光伏发电系统的最大功率点跟踪控制技术研究", 《万方学位论文数据库》 *

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102508511A (en) * 2011-11-04 2012-06-20 西安龙腾新能源科技发展有限公司 Photovoltaic inverter MPPT control method based on power disturbance
CN102508511B (en) * 2011-11-04 2014-07-16 西安龙腾新能源科技发展有限公司 Photovoltaic inverter MPPT control method based on power disturbance
CN102591399A (en) * 2012-02-02 2012-07-18 西安理工大学 Perturbation and observation method for tracking maximum power point of photovoltaic grid-connected generating system
EP2658109A1 (en) * 2012-04-27 2013-10-30 Samsung Electro-Mechanics Co., Ltd Power converting apparatus, operating method thereof, and solar power generation system
CN104578134B (en) * 2013-10-12 2017-02-01 南京南瑞继保电气有限公司 Tracking method and tracking system for maximum power point
CN104578134A (en) * 2013-10-12 2015-04-29 南京南瑞继保电气有限公司 Tracking method and tracking system for maximum power point
CN103677067A (en) * 2013-12-18 2014-03-26 深圳市金宏威技术股份有限公司 Maximum power point tracing realizing method and device and photovoltaic power generation system
CN103677067B (en) * 2013-12-18 2016-03-30 深圳市金宏威技术有限责任公司 A kind of method, device and photovoltaic generating system realizing MPPT maximum power point tracking
CN103995561B (en) * 2014-05-28 2015-12-02 华为技术有限公司 A kind of maximum power point tracing method and device
CN103995561A (en) * 2014-05-28 2014-08-20 华为技术有限公司 Maximum power point tracing method and device
CN105790617A (en) * 2014-11-28 2016-07-20 财团法人工业技术研究院 Control circuit of power converter and maximum power point tracking method
CN105790617B (en) * 2014-11-28 2018-07-13 财团法人工业技术研究院 Control circuit of power converter and maximum power point tracking method
CN104917458A (en) * 2015-05-22 2015-09-16 江苏固德威电源科技有限公司 Method and circuit for detecting output current in absence of sensor
CN104917458B (en) * 2015-05-22 2017-12-15 江苏固德威电源科技股份有限公司 A kind of method and its circuit of sensorless detection output current
CN108268084A (en) * 2018-03-30 2018-07-10 惠安县大林智能科技有限公司 Maximum power point tracing method and the photovoltaic generating system for realizing MPPT outputs
CN109032238A (en) * 2018-07-27 2018-12-18 西交利物浦大学 Maximum electric power tracking based on Current Sensorless

Also Published As

Publication number Publication date
CN102043419B (en) 2014-11-05

Similar Documents

Publication Publication Date Title
CN102043419B (en) Maximum power point tracking (MPPT) method of currentless sensor
Mousavi G An autonomous hybrid energy system of wind/tidal/microturbine/battery storage
CN102403928B (en) Maximum power point tracking control method and system thereof of photovoltaic electrical energy optimization
Fathabadi Novel standalone hybrid solar/wind/fuel cell/battery power generation system
US11509262B2 (en) Photovoltaic power generation virtual inertia compensation system and method based on super capacitor energy storage
CN104067193A (en) Power supply system and power source apparatus
CN102759945B (en) Extreme searching control (ESC)-based photovoltaic solar panel maximum power point tracking method in photovoltaic power generation system
Esmaili et al. Power smoothing and power ramp control for wind energy using energy storage
WO2015133136A1 (en) Power source system
WO2013129683A1 (en) Power supply device, electricity storage device, and electricity storage system
Poshtkouhi et al. A dual-active-bridge based bi-directional micro-inverter with integrated short-term li-ion ultra-capacitor storage and active power smoothing for modular pv systems
Kollimalla et al. A new control strategy for interfacing battery supercapacitor storage systems for PV system
Fathabadi Novel high-efficient large-scale stand-alone solar/wind hybrid power source equipped with battery bank used as storage device
CN114879806B (en) Photovoltaic static and dynamic MPPT disturbance observation and identification method and photovoltaic array power generation system
Moubayed et al. Control of an hybrid solar-wind system with acid battery for storage
Wu et al. Power loss analysis of grid connection photovoltaic systems
CN105159388B (en) A kind of method of the MPPT maximum power point tracking in photovoltaic microgrid system
Pan et al. Research of photovoltaic charging system with maximum power point tracking
Mahdi Design And Performance Analysis Of An On-Grid Photovoltaic Power System Under Iraqi Solar Circumstances
Budi et al. Energy management control based on standalone photovoltaic battery and supercapacitor hybrid energy storage system using PI controller
Medhane et al. Solar Photovoltaic Water Pumping System with Reduced Sensors and IMD using the P&O MPPT Algorithm
Abousserhane et al. Effective power management of PV/Battery hybrid system under varying frequency modes
Hossain Theoretical modeling for hybrid renewable energy: An initiative to meet the global energy
Mishima et al. Experimental evaluation of the EDLC-based power compensator for a partially shaded PV array
Kuo et al. Step-up battery charger for stand-alone wind power system

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141105

Termination date: 20181009