CN110323788A - A kind of control method and system of inertia generator - Google Patents
A kind of control method and system of inertia generator Download PDFInfo
- Publication number
- CN110323788A CN110323788A CN201810292905.9A CN201810292905A CN110323788A CN 110323788 A CN110323788 A CN 110323788A CN 201810292905 A CN201810292905 A CN 201810292905A CN 110323788 A CN110323788 A CN 110323788A
- Authority
- CN
- China
- Prior art keywords
- power
- frequency
- control
- power grid
- active power
- 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
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005259 measurement Methods 0.000 claims abstract description 13
- 230000009466 transformation Effects 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 2
- 230000004044 response Effects 0.000 abstract description 4
- 238000004590 computer program Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- H02J3/48—Controlling the sharing of the in-phase component
Abstract
The present invention provides the control methods and system of a kind of inertia generator, comprising: closure starting control switch measures the information of voltage and current information of power grid, and calculate practical active power；The frequency of power grid is calculated according to the information of voltage of the measurement；Whether exceed threshold value according to the frequency of the power grid, determines and refer to active power；Based on the reference active power and practical active power, the real power control to current source type inverter circuit is realized.Technical solution provided by the invention plays the quick control ability of power electronics, when mains frequency reduces, situation can be deviateed according to mains frequency and generate different degrees of quick active support, improve the response speed of primary frequency modulation, enable mains frequency stable in allowed band as early as possible, the stability of raising system improves power quality.
Description
Technical field
The present invention relates to the regulation technology fields of network re-active power, and in particular to a kind of control method of inertia generator
And system.
Background technique
The variation of power system frequency brings very serious influence to user, power plant and electric system itself, especially
When underfrequency, or even whole system can be made to disintegrate, cause large-area power-cuts.Therefore it must try to be maintained at system frequency
In the range of regulation, this requires carry out the adjustment and control of frequency.Conventional rack frequency modulation responds slower, the frequency of receiving end power grid
Lack quickly and effectively active support.In terms of fast frequency response, power grid proposes urgent need to active adjusting.
Summary of the invention
The deficiency for lacking quickly and effectively active support for the frequency of receiving end power grid in the prior art, the invention proposes
A kind of control method and system of inertia generator can control inertia generator and issue specific active power, in response to system
Frequency change rate, slows down mains frequency pace of change, simulates the Inertia Characteristics of generator to a certain extent, existing to solve
The above problem existing for technology.
A kind of control method of inertia generator, comprising:
Closure starting control switch, measures the information of voltage and current information of power grid, and calculate practical active power；
The frequency of power grid is calculated according to the information of voltage of the measurement；
Whether exceed threshold value according to the frequency of the power grid, determines and refer to active power；
Based on the reference active power and practical active power, the real power control to current source type inverter circuit is realized.
Further, whether the frequency according to the power grid exceeds threshold value, determines and refers to active power, comprising:
Threshold value, if the frequency of the power grid is 0 with reference to active power in threshold range；
If the frequency of the power grid exceeds threshold range, determines refer to active power as the following formula:
Pref=f (f-fbase)*PN, f < fminOr f > fmax
Wherein, PrefThe reference active power issued for inertia generator；F is the frequency of power grid；fminAnd fmaxIt is respectively electric
The minimum value and maximum value of net frequency；F (x) is the coefficient greater than 0 less than 1；fbaseFor a reference value of mains frequency；PNFor inertia
The rated capacity of generation.
Further, the frequency of the power grid is calculated as follows:
Wherein, f is the frequency of power grid；For the phase difference of network voltage；Δ t is that the phase difference corresponding time occurs.
Further, described based on the reference active power and practical active power, it realizes to current source type inversion electricity
The real power control on road, comprising:
PI control is carried out with reference to the difference of active power and practical active power by described, is obtained with reference to constant current；
The output electric current of three-phase inverter is subjected to Park Transformation and obtains watt current；
The difference with reference to constant current and the watt current is subjected to PI control, obtains modulated signal；
By carrying out pulse width modulation control to the modulated signal, the active power of inertia generator is determined.
A kind of control system of inertia generator, comprising: current source type inverter circuit, starting control switch and power control
Circuit；
The starting control switch, for connecting current source type inverter circuit and power grid；
The power control circuit, for when starting control switch closure, measuring the information of voltage and electric current letter of power grid
Breath, and calculate practical active power；The frequency of power grid is calculated according to the information of voltage of the measurement；Frequency based on the power grid
With practical active power, realizes and real power control is carried out to current source type inverter circuit；
Whether the current source type inverter circuit exceeds threshold value for the frequency according to power grid, determines and refer to active power.
Further, the power control circuit includes:
Power measurement module, for measuring the information of voltage and current information of power grid when starting control switch closure, and
Calculate practical active power；
Phase-locked loop module, for calculating the frequency of power grid according to the information of voltage of the measurement；
Control module is realized for frequency and practical active power based on the power grid to current source type inverter circuit
Carry out real power control.
Further, the control module includes:
First PI control submodule, for carrying out PI control with reference to the difference of active power and practical active power for described
System is obtained with reference to constant current；
Transformation submodule obtains watt current for the output electric current of three-phase inverter to be carried out Park Transformation；
2nd PI control submodule, for the difference with reference to constant current and the watt current to be carried out PI control
System, obtains modulated signal；
Pulse width modulation control submodule is used for by carrying out pulse width modulation control to the modulated signal, really
Determine the active power of inertia generator generation.
Further, the phase-locked loop module is used for, and the frequency of the power grid is calculated as follows:
Wherein, f is the frequency of power grid；For the phase difference of network voltage；Δ t is that the phase difference corresponding time occurs.
Further, the current source type inverter circuit, is used for, and determines refer to active power as the following formula:
Wherein, PrefThe reference active power issued for inertia generator；F is the frequency of power grid；fminAnd fmaxIt is respectively electric
The minimum value and maximum value that net frequency allows；F (x) is the coefficient greater than 0 less than 1；fbaseFor a reference value of mains frequency；PNFor
The rated capacity that inertia occurs.
Compared with the latest prior art, technical solution provided by the invention has the advantages that
Technical solution provided by the invention, can be according to the realization pair of the frequency of power grid when mains frequency exceeds threshold range
The quick real power control of current source type inverter circuit.
Technical solution provided by the invention can generate different degrees of quick active support, improve the sound of primary frequency modulation
Speed is answered, enables mains frequency is stable as early as possible to improve the stability of system in allowed band, improves power quality.
Detailed description of the invention
Fig. 1 is flow chart of the present invention；
Fig. 2 is inertia generator architecture figure；
Fig. 3 is to start switch control logic figure；
Fig. 4 is active power controller structural block diagram；
Fig. 5 is the active curve graph of frequency-.
Specific embodiment
The present invention is described in further details with reference to the accompanying drawing.For purpose, the technical solution for making the embodiment of the present invention
Clearer with advantage, following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out
It clearly and completely describes, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
Its embodiment, shall fall within the protection scope of the present invention.
Embodiment 1,
The invention proposes a kind of control methods of inertia generator, as shown in Figure 1, including the following steps:
Step 1, closure starting control switch, measure the information of voltage and current information of power grid, and calculate practical wattful power
Rate；
Step 2, the frequency that power grid is calculated according to the information of voltage of the measurement；
The frequency of the power grid is calculated as follows:
Wherein, f is the frequency of power grid；For the phase difference of network voltage；Δ t is that the phase difference corresponding time occurs.
Whether step 3 exceeds threshold value according to the frequency of the power grid, determines and refers to active power；
The phase information that phaselocked loop (PLL, Phase Locked Loop) can obtain network voltage, can then obtain
The frequency information of power grid.Starting control switch decides whether to start inertia generator according to the frequency information of power grid, start switch
Control logic figure is as shown in Figure 3.
The mains frequency information monitored according to phaselocked loop, when variation range of the frequency of power grid in permission, starting
Control switch does not start inertia generator；When the frequency of power grid exceeds allowed band, inertia generator puts into operation immediately.This
When, frequency and inertia generator need active power to be offered to have specific functional relation, can be according to the appearance of inertia generator
Size is measured to set.It is expressed as follows with mathematic(al) representation:
Wherein, PrefThe reference active power issued for inertia generator；F is the frequency of power grid；fminAnd fmaxIt is respectively electric
The minimum value and maximum value that net frequency allows, determines according to actual conditions；F (x) is the coefficient greater than 0 less than 1, value Fig. 5
Middle frequency-active slope of a curve absolute value can decline side degree according to frequency in practical application, adjust slope absolute value
Size is indicated so not having to K with f (x)；fbaseFor a reference value of mains frequency；PNThe rated capacity occurred for inertia；
Wherein, PfFor the corresponding active power of mains frequency f；PfbaseFor a reference value f of mains frequencybaseIt is corresponding active
Power.
Step 4 is based on the reference active power and practical active power, realizes to the active of current source type inverter circuit
Control；
First by the voltage and current of voltage and current sensor detection power grid, practical active power is then calculated.
Active power controller structure chart, as shown in Figure 4.Actually measured network re-active power with refer to active-power PrefIt is compared,
And PI control is carried out to error, the output of pi regulator gives i as the reference of current inner loop controllerdref；Three-phase inverter
The electric current i of outputa, ib, icWatt current i is obtained by Park Transformationd, then with reference watt current idrefMake difference and carries out PI closed loop
It adjusts, the modulated signal of generation gives pulse width modulation control submodule (PWM, pulse-width modulation).Most
Inertia generator can produce specific support active power afterwards, accelerates frequency modulation response speed, improves the stability of power grid
With raising power quality.
Embodiment 2,
Based on the same inventive concept, the present invention provides a kind of control systems of inertia generator, as shown in Figure 2, comprising:
Current source type inverter circuit, starting control switch and power control circuit；
The starting control switch, for connecting current source type inverter circuit and power grid；
The power control circuit, for when starting control switch closure, measuring the information of voltage and electric current letter of power grid
Breath, and calculate practical active power；The frequency of power grid is calculated according to the information of voltage of the measurement；Frequency based on the power grid
With practical active power, realizes and real power control is carried out to current source type inverter circuit；
Whether the current source type inverter circuit exceeds threshold value for the frequency according to power grid, determines and refer to active power.
The power control circuit includes:
Power measurement module, for measuring the information of voltage and current information of power grid when starting control switch closure, and
Calculate practical active power；
Phase-locked loop module, for calculating the frequency of power grid according to the information of voltage of the measurement；
Control module is realized for frequency and practical active power based on the power grid to current source type inverter circuit
Carry out real power control.
The control module includes:
First PI control submodule, for carrying out PI control with reference to the difference of active power and practical active power for described
System is obtained with reference to constant current；
Transformation submodule obtains watt current for the output electric current of three-phase inverter to be carried out Park Transformation；
2nd PI control submodule, for the difference with reference to constant current and the watt current to be carried out PI control
System, obtains modulated signal；
Pulse width modulation control submodule is used for by carrying out pulse width modulation control to the modulated signal, really
Determine the active power of inertia generator generation.
The phase-locked loop module is used for, and the frequency of the power grid is calculated as follows:
Wherein, f is the frequency of power grid；For the phase difference of network voltage；Δ t is that the phase difference corresponding time occurs.
The current source type inverter circuit, is used for, and determines refer to active power as the following formula:
Wherein, PrefThe reference active power issued for inertia generator；F is the frequency of power grid；fminAnd fmaxIt is respectively electric
The minimum value and maximum value that net frequency allows；F (x) is the coefficient greater than 0 less than 1；fbaseFor a reference value of mains frequency；PNFor
The rated capacity that inertia occurs.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, to the greatest extent
Invention is explained in detail referring to above-described embodiment for pipe, it should be understood by those ordinary skilled in the art that: still
It can be with modifications or equivalent substitutions are made to specific embodiments of the invention, and without departing from any of spirit and scope of the invention
Modification or equivalent replacement, are intended to be within the scope of the claims of the invention.
Claims (9)
1. a kind of control method of inertia generator characterized by comprising
Closure starting control switch, measures the information of voltage and current information of power grid, and calculate practical active power；
The frequency of power grid is calculated according to the information of voltage of the measurement；
Whether exceed threshold value according to the frequency of the power grid, determines and refer to active power；
Based on the reference active power and practical active power, the real power control to current source type inverter circuit is realized.
2. a kind of control method of inertia generator as described in claim 1, which is characterized in that described according to the power grid
Whether frequency exceeds threshold value, determines and refers to active power, comprising:
Threshold value, if the frequency of the power grid is 0 with reference to active power in threshold range；
If the frequency of the power grid exceeds threshold range, determines refer to active power as the following formula:
Pref=f (f-fbase)*PN, f < fminOr f > fmax
Wherein, PrefThe reference active power issued for inertia generator；F is the frequency of power grid；fminAnd fmaxRespectively power grid frequency
The minimum value and maximum value of rate；F (x) is the coefficient greater than 0 less than 1；fbaseFor a reference value of mains frequency；PNFor inertia generation
Rated capacity.
3. a kind of control method of inertia generator as claimed in claim 2, which is characterized in that the frequency of the power grid is pressed
Formula calculates:
Wherein, f is the frequency of power grid；For the phase difference of network voltage；Δ t is that the phase difference corresponding time occurs.
4. a kind of control method of inertia generator as described in claim 1, which is characterized in that described to be had based on the reference
Function power and practical active power realize the real power control to current source type inverter circuit, comprising:
PI control is carried out with reference to the difference of active power and practical active power by described, is obtained with reference to constant current；
The output electric current of three-phase inverter is subjected to Park Transformation and obtains watt current；
The difference with reference to constant current and the watt current is subjected to PI control, obtains modulated signal；
By carrying out pulse width modulation control to the modulated signal, the active power of inertia generator is determined.
5. a kind of control system of inertia generator characterized by comprising current source type inverter circuit, starting control switch
And power control circuit；
The starting control switch, for connecting current source type inverter circuit and power grid；
The power control circuit, for measuring the information of voltage and current information of power grid when starting control switch closure, and
Calculate practical active power；The frequency of power grid is calculated according to the information of voltage of the measurement；Frequency and reality based on the power grid
Border active power is realized and carries out real power control to current source type inverter circuit；
Whether the current source type inverter circuit exceeds threshold value for the frequency according to power grid, determines and refer to active power.
6. a kind of control system of inertia generator as claimed in claim 5, which is characterized in that the power control circuit packet
It includes:
Power measurement module, for measuring the information of voltage and current information of power grid, and calculate when starting control switch closure
Practical active power；
Phase-locked loop module, for calculating the frequency of power grid according to the information of voltage of the measurement；
Control module is realized and is carried out to current source type inverter circuit for frequency and practical active power based on the power grid
Real power control.
7. a kind of control system of inertia generator as claimed in claim 6, which is characterized in that the control module includes:
First PI control submodule is obtained for carrying out PI control with reference to the difference of active power and practical active power for described
To with reference to constant current；
Transformation submodule obtains watt current for the output electric current of three-phase inverter to be carried out Park Transformation；
2nd PI control submodule is obtained for the difference with reference to constant current and the watt current to be carried out PI control
To modulated signal；
Pulse width modulation control submodule, for determining used by carrying out pulse width modulation control to the modulated signal
Measure the active power that generator generates.
8. a kind of control system of inertia generator as claimed in claim 6, which is characterized in that the phase-locked loop module is used
In the frequency of the power grid is calculated as follows:
Wherein, f is the frequency of power grid；For the phase difference of network voltage；Δ t is that the phase difference corresponding time occurs.
9. a kind of inertia generator control system as claimed in claim 5, which is characterized in that the current source type inversion electricity
Road is used for, and determines refer to active power as the following formula:
Wherein, PrefThe reference active power issued for inertia generator；F is the frequency of power grid；fminAnd fmaxRespectively power grid frequency
The minimum value and maximum value that rate allows；F (x) is the coefficient greater than 0 less than 1；fbaseFor a reference value of mains frequency；PNFor inertia
The rated capacity of generation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810292905.9A CN110323788A (en) | 2018-03-30 | 2018-03-30 | A kind of control method and system of inertia generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810292905.9A CN110323788A (en) | 2018-03-30 | 2018-03-30 | A kind of control method and system of inertia generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110323788A true CN110323788A (en) | 2019-10-11 |
Family
ID=68112344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810292905.9A Pending CN110323788A (en) | 2018-03-30 | 2018-03-30 | A kind of control method and system of inertia generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110323788A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074967A (en) * | 2011-01-10 | 2011-05-25 | 清华大学 | Method for controlling energy storage type wind power station with synchronization property |
| CN102904282A (en) * | 2012-10-24 | 2013-01-30 | 合肥工业大学 | Micro-grid combination control method based on inverter in energy storage unit |
| CN103545810A (en) * | 2013-11-12 | 2014-01-29 | 国家电网公司 | Microgrid inverter sagging automatic control method based on small signal stability analysis |
| CN105162167A (en) * | 2015-09-30 | 2015-12-16 | 国网山东省电力公司电力科学研究院 | Adaptive-droop-control-based wind-photovoltaic-energy-storage micro-grid frequency modulation method |
| CN105449725A (en) * | 2015-12-22 | 2016-03-30 | 新疆金风科技股份有限公司 | Direct-drive wind generating set frequency crossing method and device |
| CN105743133A (en) * | 2016-05-03 | 2016-07-06 | 电子科技大学 | Active power control method for wind power plant participated power grid frequency modulation |
| US20160197482A1 (en) * | 2009-09-15 | 2016-07-07 | The University Of Western Ontario | Utilization of distributed generator inverters as statcom |
| CN107453375A (en) * | 2017-07-06 | 2017-12-08 | 中国长江电力股份有限公司 | Primary frequency modulation electricity compensation Precise control method and device under giant water turbine generator set power mode |
-
2018
- 2018-03-30 CN CN201810292905.9A patent/CN110323788A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160197482A1 (en) * | 2009-09-15 | 2016-07-07 | The University Of Western Ontario | Utilization of distributed generator inverters as statcom |
| CN102074967A (en) * | 2011-01-10 | 2011-05-25 | 清华大学 | Method for controlling energy storage type wind power station with synchronization property |
| CN102904282A (en) * | 2012-10-24 | 2013-01-30 | 合肥工业大学 | Micro-grid combination control method based on inverter in energy storage unit |
| CN103545810A (en) * | 2013-11-12 | 2014-01-29 | 国家电网公司 | Microgrid inverter sagging automatic control method based on small signal stability analysis |
| CN105162167A (en) * | 2015-09-30 | 2015-12-16 | 国网山东省电力公司电力科学研究院 | Adaptive-droop-control-based wind-photovoltaic-energy-storage micro-grid frequency modulation method |
| CN105449725A (en) * | 2015-12-22 | 2016-03-30 | 新疆金风科技股份有限公司 | Direct-drive wind generating set frequency crossing method and device |
| CN105743133A (en) * | 2016-05-03 | 2016-07-06 | 电子科技大学 | Active power control method for wind power plant participated power grid frequency modulation |
| CN107453375A (en) * | 2017-07-06 | 2017-12-08 | 中国长江电力股份有限公司 | Primary frequency modulation electricity compensation Precise control method and device under giant water turbine generator set power mode |
Non-Patent Citations (1)
| Title |
|---|
| 谭兴国: "《微电网储能应用技术研究》", 30 September 2015 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5664889B1 (en) | Inertia control method of wind power generator based on time-varying droop | |
| US20070274114A1 (en) | Non-linear droop control system and method for isochronous frequency operation | |
| CN109038614A (en) | A kind of photovoltaic plant participates in the control method and system of system frequency modulation | |
| CN110212590B (en) | Virtual synchronous generator pre-synchronization control method and system based on phase angle difference disturbance | |
| CN108448607A (en) | A kind of micro-capacitance sensor battery energy storage system and off-network switching method and apparatus | |
| US8861239B2 (en) | Regulating output characteristics of static energy supply units | |
| CN107994825A (en) | A kind of oscillation suppression method, system, device and readable storage medium storing program for executing | |
| US20170373532A1 (en) | Uninterruptible power system, control apparatus of the same and method of controlling the same | |
| CN110323788A (en) | A kind of control method and system of inertia generator | |
| CN109669342A (en) | The convergence state detection method and device of converter control system, storage medium | |
| CN109936150A (en) | A kind of optimal control method, device and its controller of virtual inertia control | |
| US7218074B2 (en) | Method and system for limiting the current output by a speed controller operating according to a U/F control law | |
| CN115313525B (en) | Control method and device for variable speed phase modifier and computer storage medium | |
| Chen et al. | Voltage control impact on performance of virtual synchronous generator | |
| CN111987951A (en) | Aviation three-level variable frequency alternating current power generation system voltage stability control method based on self-adaptive PI (proportional integral) parameters | |
| Eldigair et al. | Sensorless DTSMC of a three‐level VSI fed PMSM drive | |
| CN108418257A (en) | Photovoltaic virtual synchronous machine light stores up control method for coordinating and device | |
| CN112557813B (en) | Method for judging voltage stability of power grid under simultaneous fault of multiple loops of direct current | |
| Zarei et al. | A robust direct current control of DFIG wind turbine with low current THD based predictive approach | |
| CN110649660B (en) | Inverter output voltage control method and device of virtual synchronous generator | |
| CN115902401B (en) | Phase detection method of power unit, related equipment and medium | |
| JP6503904B2 (en) | Islander operation detection device for distributed power supply | |
| Li et al. | A novel single phase synchronous reference frame phase-locked loop with a constant zero orthogonal component | |
| US7109674B2 (en) | Method and system for regulating the average electromagnetic torque of a rotating electrical machine, storage medium and data structure for carrying out the method | |
| KR101480881B1 (en) | An apparatus and a method for an uninterruptible power supply using a space vector pulse-width modulation AC/DC converter |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191011 |
|
| RJ01 | Rejection of invention patent application after publication |