CN108683216A - Shunt chopper harmonic power divides equally control method under nonlinear load - Google Patents
Shunt chopper harmonic power divides equally control method under nonlinear load Download PDFInfo
- Publication number
- CN108683216A CN108683216A CN201810373429.3A CN201810373429A CN108683216A CN 108683216 A CN108683216 A CN 108683216A CN 201810373429 A CN201810373429 A CN 201810373429A CN 108683216 A CN108683216 A CN 108683216A
- Authority
- CN
- China
- Prior art keywords
- inverter
- harmonic
- virtual
- impedance
- current
- 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
Links
Classifications
-
- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
-
- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/388—Islanding, i.e. disconnection of local power supply from the network
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses the shunt chopper harmonic powers based on the virtual harmonic impedance of self-adjusting to divide equally control method, the present invention obtains output voltage amplitude and angle values using droop control algorithm first, and synthesising output voltage reference value, then the virtual harmonic impedance algorithm of self-adjusting is added, output voltage instruction is obtained, and carries out output capacitance voltage inductive current double-closed-loop control.The virtual harmonic impedance algorithm of self-adjusting introduces harmonic current information structuring and becomes virtual harmonic impedance, it is established that the sagging relationship of self-adjusting of harmonic current and virtual harmonic impedance dynamically adjusts harmonic current distribution.The virtual harmonic impedance mechanism of modified proposed by the present invention reconfigures the output impedance of system using self-regulating method, reduces harmonic circulating current and then reduces total circulation, is detected without each inversion communication among unit and feed line impedance, can adaptively divide equally harmonic power.
Description
Technical field
The invention belongs in electric system new energy distributed power generation, isolated island microgrid inverter parallel running when work(
Rate divides equally control technology field, and in particular to shunt chopper harmonic power divides equally control method under a kind of nonlinear load.
Background technology
Environmental pollution, energy crisis getting worse, with the new energy power generation technologies such as photovoltaic, water power and wind-powered electricity generation development and
Using, while the contradiction to coordinate between bulk power grid and distributed generation resource, micro-capacitance sensor are applied and are given birth to.Inverter is as distributed generation resource
Access the interface of micro-capacitance sensor so that a large amount of micro- sources are incorporated to micro-capacitance sensor, constitute multi-inverter parallel environment.
When micro-grid system be nonlinear load power when, nonlinear load per se with harmonic wave can influence system frequency
And the adjustment of voltage, prevent it from coordinating to control the output power between each inverter well, reduce parallel system fundamental wave and
Harmonic power divides equally precision, and especially when each shunt chopper feed line impedance has differences, power-sharing precision is more difficult to
Ensure.If certain inverter undertakes excessively high bearing power, the inverter can be caused to overload, influence the stable operation of system.Work(
Rate is divided into fundamental power and respectively divides equally with harmonic power.Wherein, it is more to divide equally strategy study for fundamental power, and technology is also more
Maturation, and evenly distributing still for harmonic power has difficulty, therefore, realizes that each micro-source inverter distributes harmonic wave work(by its capacity
Rate has important research significance.
Invention content
The object of the present invention is to provide shunt chopper harmonic powers under a kind of nonlinear load to divide equally control method, solution
Determined shunt chopper islet operation when each inverter can not be by its rated capacity load-sharing power the problem of.
The technical solution adopted in the present invention is that shunt chopper harmonic power divides equally control method under nonlinear load,
Include the following steps：
Step 1, the output voltage u of sampling inverter xo_x, bridge arm inductive current iL_xWith output current io_x, wherein x expressions
Inverter is numbered, and x ∈ [1, n], and n indicates inverter number of units, and n >=2；
Step 2, the average active power P that inverter x is calculated in method is calculated according to mean powerxAveragely idle work(
Rate Qx；
Step 3, using droop control device to average active power PxWith average reactive power QxIt is handled, obtains inversion
The output voltage reference value u of device xref_x；
Step 4, inverter x output currents i is extracted according to fundamental current extracting methodo_xIn fundamental current component
Step 5, by the output current i of inverter xo_xWith output current io_xIn fundamental current componentIt is obtained as difference
Total harmonic current components of inverter xAnd calculate the virtual value of the total harmonic current components of inverter xAccording to certainly
Adjust the virtual virtual harmonic impedance of harmonic impedance algorithm construction self-adjustingThe self-adjusting for setting up inverter x is virtually humorous
Wave impedanceTotal harmonic current virtual value is exported with itInverse dip relationship, and by itself and total harmonic currentMake
The multiplied pressure drop on the virtual harmonic impedance of inverter x self-adjustings
Step 6, by the inverter x output voltage reference values u in step 3ref_xIt is empty with the inverter x self-adjustings in step 5
Pressure drop in rahmonic impedanceIt is poor to make, and obtains the output voltage closed loop instruction u of inverter xref_vir_x；
Step 7, output voltage closed loop is instructed into uref_vir_xWith the output voltage u of inverter xo_xIt is poor to make, which passes through
Voltage regulator obtains the inductive current instruction i of inverter xL_ref_x；
Step 8, inductive current is instructed into iL_ref_xWith the bridge arm inductive current i of inverter xL_xIt is poor to make, and the difference is by electricity
Throttle regulator obtains modulated signal ux；
Step 9, modulated signal uxThrough overdriving and protecting circuit, driving H-bridge inverter circuit S1-S4Four power switch tubes
Break-make, to respectively harmonic power.
It is a feature of the present invention that
Mean power calculating is carried out using traditional product method, virtual orthographic vector meter algorithm or integrated average in step 2.
Using fast Fourier decomposition method FFT, narrow band filter frequency selection method, i in step 4p-iqMethod, compound second order Generalized Product
Point-score or based on d-q transformation method to inverter x output currents io_xIn fundamental current componentIt extracts.
In step 7 voltage regulator using proportional and integral controller, track with zero error adjuster, ratio resonant regulator or
Repetitive controller adjuster.
Current regulator uses track with zero error adjuster, predicted current adjuster or proportional controller in step 8.
Step 5 is according to the following steps：
Step 5.1, by inverter x output currents io_xWith its fundamental current componentIt is poor to make, and obtains the total of inverter x
Harmonic current componentsAnd calculate the virtual value of the total harmonic current components of inverter x
Step 5.2, according to the virtual virtual harmonic impedance of harmonic impedance algorithm construction self-adjusting of self-adjustingEstablish
Play the virtual harmonic impedance of self-adjusting of inverter xTotal harmonic current virtual value is exported with itInverse dip relationship；
Step 5.3, by the total harmonic currents of inverter xWith the virtual harmonic impedance of its self-adjustingWork multiplies, and obtains inverse
Become the pressure drop on the virtual harmonic impedance of device x self-adjustingsIts calculation formula is：
The virtual harmonic impedance of the self-adjusting of inverter x in step 5.2Acquiring method be：
A, by total harmonic current components virtual value of inverter xWith the sagging coefficient k of virtual harmonic impedancehWork multiplies, and obtains
Wherein, the sagging coefficient k of virtual harmonic impedancehDesign follow following design criteria：
1) when each shunt chopper capacity is identical, khValue is identical, that is, meets：
And kh＞ 0；
2) when each shunt chopper capacity difference, khValue meets：
And kh＞ 0
Wherein, SxFor the rated capacity of inverter x；
B, with the preset virtual harmonic impedance value of inverter xIn addition making the result after multiplyingIt is empty derived from adjustment
Rahmonic impedance algorithms formula is：
Wherein,For the preset virtual harmonic impedance value of inverter x, it can generally be set as 0；
Shunt chopper harmonic power divides equally control method under nonlinear load disclosed by the invention, with existing micro-capacitance sensor
Inverter parallel power-sharing control method is compared, and advantage is embodied in：
1) present invention has divided equally harmonic power on the basis of using only local information, reduces harmonic circulating current, without increasing
Add inversion communication among unit and additional sampling cost, also avoids due to needing long-distance sand transport signal by territory restriction.
2) the existing method that fixed virtual impedance value is added need to be added the virtual impedance much larger than line impedance value and
Ignore influence of the line impedance to power-sharing, and is that virtual impedance value is added in full frequency band.Self-adjusting proposed by the present invention is empty
Rahmonic impedance avoids the drawbacks of virtual impedance value is fixed in addition, which becomes according to each inverter output harmonic wave current flow configuration
Virtual harmonic impedance, it is established that system resistance is adaptively adjusted in the sagging relationship of self-adjusting of harmonic current and virtual harmonic impedance
It is anti-, it improves harmonic power and divides equally precision, also avoid the direct calculating of harmonic power, simplify control algolithm.
3) detection of inverter feed line impedance is not necessarily in the present invention, therefore suitable for the micro-grid system of various structures, and
It realizes simple.
4) the present invention is based on local controls can be adaptively adjusted each inverter without communication and feed line impedance detection
Equivalent output impedance improves each inverter harmonic power-sharing precision.
Description of the drawings
Fig. 1 is more of the isolated island micro-capacitance sensor that shunt chopper harmonic power divides equally control method under nonlinear load of the present invention
The electrical block diagram of inverter parallel；
Fig. 2 is the system overall control frame that shunt chopper harmonic power divides equally control method under nonlinear load of the present invention
Figure；
Fig. 3 is the virtual harmonic wave of self-adjusting that shunt chopper harmonic power divides equally control method under nonlinear load of the present invention
The structure chart of algorithm.
Specific implementation mode
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
Shunt chopper harmonic power divides equally control method under nonlinear load of the present invention, and the more inverters relied on are simultaneously
Contact system, as shown in Figure 1, including multiple distributed generation resources, multiple distributed generation resources pass through inverter, filter and transmission line
Be incorporated to public exchange busbar behind road, then power to the load from public exchange busbar, load can be it is resistive, perception, capacitive or
It is non-linear；
As shown in Figure 2 and Figure 3, shunt chopper harmonic power divides equally control method under nonlinear load of the present invention, according to
Lower step is implemented：
Step 1, the output voltage u of sampling inverter xo_x, bridge arm inductive current iL_xWith output current io_x, wherein x expressions
Inverter is numbered, and x ∈ [1, n], and n indicates inverter number of units, and n >=2；
Step 2, the average active power P that inverter x is calculated in method is calculated according to mean powerxAveragely idle work(
Rate Qx；
Wherein, mean power calculates method and traditional product method, virtual orthographic vector meter algorithm or integral mean may be used
Method；
Step 3, using droop control device to average active power PxWith average reactive power QxIt is handled, obtains inversion
The output voltage reference value u of device xref_x；
Step 4, inverter x output currents i is extracted according to fundamental current extracting methodo_xIn fundamental current component
Wherein, fundamental current extracting method may be used fast Fourier decomposition method (FFT), narrow band filter frequency selection method,
ip-iqMethod, compound second order Generalized Product point-score or the method based on d-q transformation；
Step 5, by the output current i of inverter xo_xWith output current io_xIn fundamental current componentIt is obtained as difference
Total harmonic current components of inverter xAnd calculate the virtual value of the total harmonic current components of inverter xAccording to certainly
Adjust the virtual virtual harmonic impedance of harmonic impedance algorithm construction self-adjustingThe self-adjusting for setting up inverter x is virtually humorous
Wave impedanceTotal harmonic current virtual value is exported with itInverse dip relationship, and by itself and total harmonic currentMake
The multiplied pressure drop on the virtual harmonic impedance of inverter x self-adjustings
Step 5 is specially：
Step 5.1, by inverter x output currents io_xWith its fundamental current componentIt is poor to make, and obtains the total of inverter x
Harmonic current componentsAnd calculate the virtual value of the total harmonic current components of inverter x
Step 5.2, according to the virtual virtual harmonic impedance of harmonic impedance algorithm construction self-adjusting of self-adjustingEstablish
Play the virtual harmonic impedance of self-adjusting of inverter xTotal harmonic current virtual value is exported with itInverse dip relationship；
Wherein, the virtual harmonic impedance of the self-adjusting of inverter xAcquiring method be：
A, by total harmonic current components virtual value of inverter xWith the sagging coefficient k of virtual harmonic impedancehWork multiplies, and obtains
Wherein, the sagging coefficient k of virtual harmonic impedancehDesign follow following design criteria：
1) when each shunt chopper capacity is identical, khValue is identical, that is, meets：
And kh＞ 0
2) when each shunt chopper capacity difference, khValue meets：
And kh＞ 0
Wherein, SxFor the rated capacity of inverter x；
B, with the preset virtual harmonic impedance value of inverter xIn addition making the result after multiplyingIt is empty derived from adjustment
Rahmonic impedance algorithms formula is：
Wherein,For the preset virtual harmonic impedance value of inverter x, it can generally be set as 0；
Step 5.3, by total harmonic current of inverter xWith the virtual harmonic impedance of its self-adjustingWork multiplies, and obtains
Pressure drop on the virtual harmonic impedance of inverter x self-adjustingsIts calculation formula is：
Step 6, by the inverter x output voltage reference values u in step 3ref_xIt is virtual with inverter x self-adjustings in step 5
Pressure drop on harmonic impedanceIt is poor to make, and obtains the output voltage closed loop instruction u of inverter xref_vir_x, calculation formula is：
Step 7, output voltage closed loop is instructed into uref_vir_xWith the output voltage u of inverter xo_xIt is poor to make, which passes through
Voltage regulator obtains the inductive current instruction i of inverter xL_ref_x；
Wherein, voltage regulator is using proportional and integral controller, track with zero error adjuster, ratio resonant regulator or again
Device is controlled to adjust again.
Step 8, inductive current is instructed into iL_ref_xWith the bridge arm inductive current i of inverter xL_xIt is poor to make, and the difference is by electricity
Throttle regulator obtains modulated signal ux；
Wherein, current regulator uses track with zero error adjuster, predicted current adjuster or proportional controller.
Step 9, modulated signal uxThrough overdriving and protecting circuit, driving H-bridge inverter circuit S1-S4Four power switch tubes
Break-make, to respectively harmonic power.
The purpose of the present invention is being directed under micro-capacitance sensor nonlinear load, when shunt chopper islet operation, each inverter could not
The problem of by its rated capacity load-sharing power, it is proposed that shunt chopper harmonic power divides equally controlling party under nonlinear load
Method.
Claims (7)
1. shunt chopper harmonic power divides equally control method under nonlinear load, which is characterized in that include the following steps：
Step 1, the output voltage u of sampling inverter xo_x, bridge arm inductive current iL_xWith output current io_x, wherein x expression inversions
Device is numbered, and x ∈ [1, n], and n indicates inverter number of units, and n >=2；
Step 2, the average active power P that inverter x is calculated in method is calculated according to mean powerxWith average reactive power Qx；
Step 3, using droop control device to average active power PxWith average reactive power QxIt is handled, obtains inverter x's
Output voltage reference value uref_x；
Step 4, inverter x output currents i is extracted according to fundamental current extracting methodo_xIn fundamental current component
Step 5, by the output current i of inverter xo_xWith output current io_xIn fundamental current componentInversion is obtained as difference
Total harmonic current components of device xAnd calculate the virtual value of the total harmonic current components of inverter xAccording to self-adjusting
The virtual harmonic impedance of virtual harmonic impedance algorithm construction self-adjustingSet up the virtual harmonic wave resistance of self-adjusting of inverter x
It is anti-Total harmonic current virtual value is exported with itInverse dip relationship, and by itself and total harmonic currentMake multiplied
Pressure drop onto the virtual harmonic impedance of self-adjusting
Step 6, by the inverter x output voltage reference values u in step 3ref_xIt is virtually humorous with the inverter x self-adjustings in step 5
Pressure drop in wave impedanceIt is poor to make, and obtains inverter x output voltage closed loops instruction uref_vir_x；
Step 7, output voltage closed loop is instructed into uref_vir_xWith the output voltage u of inverter xo_xIt is poor to make, and the difference is through overvoltage
Adjuster obtains the inductive current instruction i of inverter xL_ref_x；
Step 8, inductive current is instructed into iL_ref_xWith the bridge arm inductive current i of inverter xL_xIt is poor to make, and the difference is through overcurrent tune
Section device obtains modulated signal ux；
Step 9, modulated signal uxThrough overdriving and protecting circuit, driving H-bridge inverter circuit S1-S4Four power switch tubes it is logical
It is disconnected, thus respectively harmonic power.
2. shunt chopper harmonic power divides equally control method under nonlinear load according to claim 1, feature exists
In using traditional product method, virtual orthographic vector meter algorithm or integrated average progress mean power calculating in the step 2.
3. shunt chopper harmonic power divides equally control method under nonlinear load according to claim 1, feature exists
In using fast Fourier decomposition method FFT, narrow band filter frequency selection method, i in the step 4p-iqMethod, compound second order Generalized Product
Point-score or based on d-q transformation method to inverter x output currents io_xIn fundamental current componentIt extracts.
4. shunt chopper harmonic power divides equally control method under nonlinear load according to claim 1, feature exists
In, in the step 7 voltage regulator using proportional and integral controller, track with zero error adjuster, ratio resonant regulator or
Repetitive controller adjuster.
5. shunt chopper harmonic power divides equally control method under nonlinear load according to claim 1, feature exists
In current regulator uses track with zero error adjuster, predicted current adjuster or proportional controller in the step 8.
6. shunt chopper harmonic power divides equally control method under nonlinear load according to claim 1, feature exists
In the step 5 is according to the following steps：
Step 5.1, by inverter x output currents io_xWith its fundamental current componentIt is poor to make, and obtains total harmonic wave electricity of inverter x
Flow componentAnd calculate the virtual value of the total harmonic current components of inverter x
Step 5.2, according to the virtual virtual harmonic impedance of harmonic impedance algorithm construction self-adjusting of self-adjustingSet up inversion
The virtual harmonic impedance of self-adjusting of device xTotal harmonic current virtual value is exported with itInverse dip relationship；
Step 5.3, by the total harmonic currents of inverter xWith the virtual harmonic impedance of its self-adjustingWork multiplies, and obtains inverter x
Pressure drop on the virtual harmonic impedance of self-adjustingIts calculation formula is：
7. shunt chopper harmonic power divides equally control method under nonlinear load according to claim 6, feature exists
In the virtual harmonic impedance of the self-adjusting of inverter x in the step 5.2Acquiring method be：
A, by total harmonic current components virtual value of inverter xWith the sagging coefficient k of virtual harmonic impedancehWork multiplies, and obtains
Wherein, the sagging coefficient k of virtual harmonic impedancehDesign follow following design criteria：
1) when each shunt chopper capacity is identical, khValue is identical, that is, meets：
And kh＞ 0；
2) when each shunt chopper capacity difference, khValue meets：
And kh＞ 0
Wherein, SxFor the rated capacity of inverter x；
B, with the preset virtual harmonic impedance value of inverter xIn addition making the result after multiplyingIt is virtual humorous derived from adjustment
Wave impedance algorithmic formula is：
Wherein,For the preset virtual harmonic impedance value of inverter x, it can generally be set as 0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810373429.3A CN108683216B (en) | 2018-04-24 | 2018-04-24 | Harmonic power uniform control method for parallel inverter under nonlinear load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810373429.3A CN108683216B (en) | 2018-04-24 | 2018-04-24 | Harmonic power uniform control method for parallel inverter under nonlinear load |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108683216A true CN108683216A (en) | 2018-10-19 |
| CN108683216B CN108683216B (en) | 2019-12-24 |
Family
ID=63801575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810373429.3A Active CN108683216B (en) | 2018-04-24 | 2018-04-24 | Harmonic power uniform control method for parallel inverter under nonlinear load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108683216B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109167371A (en) * | 2018-10-29 | 2019-01-08 | 四川大学 | Realize the idle virtual induction reactance adjuster divided equally of shunt chopper and control method |
| CN110838730A (en) * | 2019-11-27 | 2020-02-25 | 华侨大学 | Unified virtual impedance controller, unified virtual impedance control method and parallel system |
| CN112152262A (en) * | 2020-09-30 | 2020-12-29 | 苏州大学 | Multi-machine parallel connection method and system based on virtual impedance and harmonic compensation |
| CN112701720A (en) * | 2020-12-17 | 2021-04-23 | 电子科技大学 | Hybrid control strategy for constant power load of alternating-current micro-mesh belt |
| CN113036764A (en) * | 2021-03-08 | 2021-06-25 | 山东科汇电力自动化股份有限公司 | Synchronous fixed-frequency current control method based on virtual harmonic resistance |
| CN113224793A (en) * | 2021-05-10 | 2021-08-06 | 湖南大学 | Micro-grid multi-inverter parallel connection self-adaptive harmonic impedance remodeling control method and system |
| CN113472006A (en) * | 2021-06-08 | 2021-10-01 | 浙江工业大学 | Off-grid control method of multi-machine parallel energy storage power converter under complex load |
| CN113489040A (en) * | 2021-09-06 | 2021-10-08 | 哈尔滨工业大学(深圳)(哈尔滨工业大学深圳科技创新研究院) | Dynamic event trigger control method and device for UPS system power sharing |
| CN115566743A (en) * | 2022-11-09 | 2023-01-03 | 国网江西省电力有限公司电力科学研究院 | Distributed light storage cluster control method based on 5G |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101499663A (en) * | 2008-01-30 | 2009-08-05 | 力博特公司 | Parallel control method for inverter and inverter therefor |
| CN104716859A (en) * | 2015-04-14 | 2015-06-17 | 国家电网公司 | Equalization control method for power of plurality of parallel inverters in island microgrid |
| CN104734549A (en) * | 2015-04-14 | 2015-06-24 | 国家电网公司 | Island micro-grid multi-inverter parallel power split control method |
| CN105071405A (en) * | 2015-08-26 | 2015-11-18 | 电子科技大学 | Microgrid system with asymmetric non-linear load and power balancing control method |
| CN107342598A (en) * | 2017-07-18 | 2017-11-10 | 西安交通大学 | A kind of isolated island micro-capacitance sensor harmonic power distribution method based on harmonic impedance control |
-
2018
- 2018-04-24 CN CN201810373429.3A patent/CN108683216B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101499663A (en) * | 2008-01-30 | 2009-08-05 | 力博特公司 | Parallel control method for inverter and inverter therefor |
| CN104716859A (en) * | 2015-04-14 | 2015-06-17 | 国家电网公司 | Equalization control method for power of plurality of parallel inverters in island microgrid |
| CN104734549A (en) * | 2015-04-14 | 2015-06-24 | 国家电网公司 | Island micro-grid multi-inverter parallel power split control method |
| CN105071405A (en) * | 2015-08-26 | 2015-11-18 | 电子科技大学 | Microgrid system with asymmetric non-linear load and power balancing control method |
| CN107342598A (en) * | 2017-07-18 | 2017-11-10 | 西安交通大学 | A kind of isolated island micro-capacitance sensor harmonic power distribution method based on harmonic impedance control |
Non-Patent Citations (2)
| Title |
|---|
| XIANGDONG SUN ; YONGNI LIU ; BIYING REN ; MAJING YU: "Research on control strategy of a single-phase inverter with good output voltage quality", 《2016 IEEE 8TH INTERNATIONAL POWER ELECTRONICS AND MOTION CONTROL CONFERENCE (IPEMC-ECCE ASIA)》 * |
| 林燎源 等；: "基于阻抗下垂的逆变器无线并联均流控制", 《电工技术学报》 * |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109167371A (en) * | 2018-10-29 | 2019-01-08 | 四川大学 | Realize the idle virtual induction reactance adjuster divided equally of shunt chopper and control method |
| CN109167371B (en) * | 2018-10-29 | 2023-12-08 | 四川大学 | Virtual inductive reactance regulator for realizing reactive power sharing of parallel inverter and control method |
| CN110838730A (en) * | 2019-11-27 | 2020-02-25 | 华侨大学 | Unified virtual impedance controller, unified virtual impedance control method and parallel system |
| CN110838730B (en) * | 2019-11-27 | 2023-03-31 | 华侨大学 | Unified virtual impedance controller, unified virtual impedance control method and parallel system |
| CN112152262A (en) * | 2020-09-30 | 2020-12-29 | 苏州大学 | Multi-machine parallel connection method and system based on virtual impedance and harmonic compensation |
| CN112701720B (en) * | 2020-12-17 | 2022-11-01 | 电子科技大学 | Hybrid control method for constant power load of alternating-current micro-mesh belt |
| CN112701720A (en) * | 2020-12-17 | 2021-04-23 | 电子科技大学 | Hybrid control strategy for constant power load of alternating-current micro-mesh belt |
| CN113036764A (en) * | 2021-03-08 | 2021-06-25 | 山东科汇电力自动化股份有限公司 | Synchronous fixed-frequency current control method based on virtual harmonic resistance |
| CN113036764B (en) * | 2021-03-08 | 2022-09-09 | 山东科汇电力自动化股份有限公司 | Synchronous constant-frequency current control method based on virtual harmonic resistor |
| CN113224793B (en) * | 2021-05-10 | 2022-07-08 | 湖南大学 | Micro-grid multi-inverter parallel connection self-adaptive harmonic impedance remodeling control method and system |
| CN113224793A (en) * | 2021-05-10 | 2021-08-06 | 湖南大学 | Micro-grid multi-inverter parallel connection self-adaptive harmonic impedance remodeling control method and system |
| CN113472006B (en) * | 2021-06-08 | 2022-10-28 | 浙江工业大学 | Off-grid control method for multi-machine parallel energy storage power converter under complex load |
| CN113472006A (en) * | 2021-06-08 | 2021-10-01 | 浙江工业大学 | Off-grid control method of multi-machine parallel energy storage power converter under complex load |
| CN113489040B (en) * | 2021-09-06 | 2021-12-14 | 哈尔滨工业大学(深圳)(哈尔滨工业大学深圳科技创新研究院) | Dynamic event trigger control method and device for UPS system power sharing |
| CN113489040A (en) * | 2021-09-06 | 2021-10-08 | 哈尔滨工业大学(深圳)(哈尔滨工业大学深圳科技创新研究院) | Dynamic event trigger control method and device for UPS system power sharing |
| CN115566743A (en) * | 2022-11-09 | 2023-01-03 | 国网江西省电力有限公司电力科学研究院 | Distributed light storage cluster control method based on 5G |
| CN115566743B (en) * | 2022-11-09 | 2023-05-16 | 国网江西省电力有限公司电力科学研究院 | 5G-based distributed light reservoir group control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108683216B (en) | 2019-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108683216A (en) | Shunt chopper harmonic power divides equally control method under nonlinear load | |
| Mahela et al. | Power quality improvement in distribution network using DSTATCOM with battery energy storage system | |
| CN106410849B (en) | Microgrid inverter balance control method based on virtual synchronous generator | |
| US20190115757A1 (en) | Smart-Grid Adaptive Power Management Method and System With Power Factor Optimization and Total Harmonic Distortion Reduction | |
| CN102510120B (en) | Micro-grid inverter voltage and current double-ring hanging control method based on virtual impedance | |
| CN105429168B (en) | A kind of power quality treatment method based on alternating current-direct current hybrid power supply net | |
| CN108565880B (en) | Energy storage SOC control method for distributed AC/DC hybrid system | |
| CN111786376B (en) | Control method, device, terminal and storage medium of direct-current micro-grid | |
| CN109004653A (en) | A kind of active reactive coupling improvement photovoltaic access causes the method for rural power grids overvoltage | |
| Hasan et al. | Online harmonic extraction and synchronization algorithm based control for unified power quality conditioner for microgrid systems | |
| Kuchibhatla et al. | An elephant herding optimization algorithm-based static switched filter compensation scheme for power quality improvement in smart grid | |
| CN107706904A (en) | Energy storage converter virtual resistance control method in offshore platform wind-light storage DC power-supply system | |
| Zeng et al. | Harmonic power sharing and PCC voltage harmonics compensation in islanded microgrids by adopting virtual harmonic impedance method | |
| CN111262260A (en) | Join in marriage combined electric energy quality of net low pressure platform district and synthesize and administer device | |
| CN105119314B (en) | A kind of dynamic switching method that control is balanced for power unit direct voltage | |
| CN104795836B (en) | A kind of single-phase photovoltaic grid-connected generating detecting system and its non-linear current control method | |
| Saha et al. | Modelling and control of STATCOM to ensure stable power system operation | |
| CN106877333B (en) | PWM rectifier with active compensation capability and control method thereof | |
| Bisht et al. | Enhancement of power transfer capacity and transmission efficiency using SSSC | |
| CN104377711A (en) | Dynamic reactive power compensation method | |
| CN111711201B (en) | Coordination control method and device for reactive power compensation device of direct current transmission system | |
| CN114336660A (en) | UPQC direct current prediction control method based on power angle | |
| CN110350814A (en) | A kind of vector control method controlling each DC port power in three-phase multi-port current transformer | |
| Osaloni et al. | Power Loss Analysis with Dispersed Generation in Multifunction Power Conditioner Design to Improve Power Quality | |
| Ghatak et al. | Comparative Analysis of Control Systems of Distribution Static Synchronous Compensator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211229 Address after: 710000 room 104-3, Block E, HUanpu science and Technology Industrial Park, Tiangu 8th Road, Yuhua street, high tech Zone, Xi'an, Shaanxi Province Patentee after: Xi'an Xinpai New Energy Vehicle Power Control Research Institute Co.,Ltd. Address before: 710048 No. 5 Jinhua South Road, Shaanxi, Xi'an Patentee before: XI'AN University OF TECHNOLOGY |
|
| TR01 | Transfer of patent right |