CN106558977A - Three-phase three-wire system inverter and its output current control method and control system - Google Patents
Three-phase three-wire system inverter and its output current control method and control system Download PDFInfo
- Publication number
- CN106558977A CN106558977A CN201710030018.XA CN201710030018A CN106558977A CN 106558977 A CN106558977 A CN 106558977A CN 201710030018 A CN201710030018 A CN 201710030018A CN 106558977 A CN106558977 A CN 106558977A
- Authority
- CN
- China
- Prior art keywords
- phase
- wire system
- inverter output
- component
- output 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
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0038—Circuits or arrangements for suppressing, e.g. by masking incorrect turn-on or turn-off signals, e.g. due to current spikes in current mode control
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
This application discloses three-phase three-wire system inverter and its output current control method and control system, the control method includes：Sampling respectively obtains DC component and AC compounent in three-phase three-wire system inverter output current；Common mode differential mode separation is carried out to the DC component, difference mode signal is extracted；Using the actuator process difference mode signal；Difference mode signal after process is added in the AC compounent, collectively as the value of feedback of electric current loop；Wherein, the electric current loop for by three-phase three-wire system inverter output current control in set-point, it is achieved thereby that suppress three-phase three-wire system inverter output current in DC component purpose.
Description
Technical field
The present invention relates to electric and electronic technical field, more particularly, it relates to three-phase three-wire system inverter and its output electricity
Method of flow control and control system.
Background technology
In theory, three-phase three-wire system inverter output current is sinusoidal ac, but in practical application, by busbar voltage
The factor such as imbalance, circuit parameter deviation, sampling deviation, switching tube parameter differences affects, and causes the phase three-wire three for actually obtaining
Inevitably there is DC component in inverter output current processed.If not taking effective measure to suppress three-phase three-wire system
DC component in inverter output current, is likely to result in access transformator Point Drifting, the problems such as cause transformator saturation.
The content of the invention
In view of this, the invention provides three-phase three-wire system inverter and its output current control method and control system,
To realize suppressing the purpose of the DC component in three-phase three-wire system inverter output current.
A kind of three-phase three-wire system inverter output current control method, including：
Sampling respectively obtains DC component and AC compounent in three-phase three-wire system inverter output current；
Common mode differential mode separation is carried out to the DC component, difference mode signal is extracted；
Using the actuator process difference mode signal；
Difference mode signal after process is added in the AC compounent, collectively as the value of feedback of electric current loop；
Wherein, the electric current loop for by three-phase three-wire system inverter output current control in set-point.
Another three-phase three-wire system inverter output current control method, including：
Sampling respectively obtains DC component and AC compounent in three-phase three-wire system inverter output current；
Common mode differential mode separation is carried out to the DC component, difference mode signal is extracted；
Using the actuator process difference mode signal；
Using the AC compounent as the value of feedback of electric current loop, and the difference mode signal after process is added to the electric current loop
On the modulating wave of output；
Wherein, the electric current loop for by three-phase three-wire system inverter output current control in set-point.
Wherein, it is described that common mode differential mode separation is carried out to the DC component, difference mode signal is extracted, including：
According to the DC component, the common-mode signal of three-phase three-wire system inverter output is calculated；
According to the DC component and the common mode component, the differential mode letter of three-phase three-wire system inverter output is calculated
Number.
Wherein, the utilization actuator processes the difference mode signal, including：Using the pi regulator process differential mode letter
Number.
A kind of three-phase three-wire system inverter output current control system, including：
Sample circuit, obtains DC component in three-phase three-wire system inverter output current for sampling respectively and exchanges point
Amount；
Processor, for the sampling circuit samples to DC component carry out common mode differential mode separation, extract differential mode
Signal；Using the actuator process difference mode signal；Difference mode signal after process is added to into what the sampling circuit samples were arrived
In AC compounent, collectively as the value of feedback of electric current loop；
Wherein, the electric current loop for by three-phase three-wire system inverter output current control in set-point.
Another three-phase three-wire system inverter output current control system, including：
Sample circuit, obtains DC component in three-phase three-wire system inverter output current for sampling respectively and exchanges point
Amount；
Processor, for the sampling circuit samples to DC component carry out common mode differential mode separation, extract differential mode
Signal；Using the actuator process difference mode signal；The AC compounent that the sampling circuit samples are arrived is used as the anti-of electric current loop
Feedback, and the difference mode signal after process is added on the modulating wave of the electric current loop output；
Wherein, the electric current loop for by three-phase three-wire system inverter output current control in set-point.
Wherein, processor carries out common mode differential mode separation to the DC component, extracts difference mode signal, specifically includes：
Processor is calculated the common-mode signal of three-phase three-wire system inverter output according to the DC component；According to institute
DC component and the common mode component are stated, the difference mode signal of three-phase three-wire system inverter output is calculated.
Wherein, the actuator is pi regulator.
A kind of three-phase three-wire system inverter, including：Any one three-phase three-wire system inverter output current as disclosed above
Control system.
It can be seen from above-mentioned technical scheme that, theoretically, by the three-phase three-wire system inverter for sampling output electricity
Be added to after the adjusted device process of stream DC component three-phase three-wire system inverter output current closed-loop control system (i.e. electric current loop)
Feedback or output on, can using electric current loop by three-phase three-wire system inverter output current control in set-point, so as to reach
The purpose of the DC component in suppression three-phase three-wire system inverter output current.But in practical application, due to the actuator
Integral element can introduce common-mode signal, so DC component of the present invention first to sampling carries out common mode differential mode separation, then
The DC component after common-mode signal will be rejected replaces the DC component for having sampled to be applied in such scheme, so avoids
The introducing of common-mode signal.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of three-phase three-wire system inverter output current control method flow chart disclosed in the embodiment of the present invention；
Fig. 2 is another three-phase three-wire system inverter output current control method flow chart disclosed in the embodiment of the present invention；
Fig. 3 is a kind of current loop control system principle diagram disclosed in the embodiment of the present invention；
Fig. 4 is another current loop control system principle diagram disclosed in the embodiment of the present invention；
Fig. 5 is the corresponding current loop control system principle diagrams of Fig. 1；
Fig. 6 is the corresponding current loop control system principle diagrams of Fig. 2；
Fig. 7 is that a kind of three-phase three-wire system inverter output current Control system architecture is illustrated disclosed in the embodiment of the present invention
Figure.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Referring to Fig. 1, the embodiment of the invention discloses a kind of three-phase three-wire system inverter output current control method, to realize
The purpose of the DC component in suppression three-phase three-wire system inverter output current, including：
Step S01：Sampling respectively obtains DC component and AC compounent in three-phase three-wire system inverter output current；
Step S02：Common mode differential mode separation is carried out to the DC component, difference mode signal is extracted；
Step S03：Using the actuator process difference mode signal；
Step S04：Difference mode signal after process is added in the AC compounent, collectively as the feedback of electric current loop
Value；Wherein, the electric current loop for by three-phase three-wire system inverter output current control in set-point.
Referring to Fig. 2, the embodiment of the invention discloses another three-phase three-wire system inverter output current control method, with reality
Now suppress three-phase three-wire system inverter output current in DC component purpose, including：
Step S01：Sampling respectively obtains DC component and AC compounent in three-phase three-wire system inverter output current；
Step S02：Common mode differential mode separation is carried out to the DC component, difference mode signal is extracted；
Step S03：Using the actuator process difference mode signal；
Step S04：Using the AC compounent as the value of feedback of electric current loop, and the difference mode signal after process is added to institute
State on the modulating wave of electric current loop output；Wherein, the electric current loop for by three-phase three-wire system inverter output current control giving
Definite value.
Below, the technical scheme shown in Fig. 1 and Fig. 2 is described in detail.
Three-phase three-wire system inverter output waveforms frequently with voltage x current Double-loop Control Strategy, wherein, electric current loop it is given
It is worth the output (or directly can also give) for Voltage loop, the value of feedback of electric current loop is the three-phase three-wire system inversion that sampling is obtained
Device output current, current loop controller change modulating wave according to the rightabout that value of feedback deviates set-point, and modulating wave Jing PWM send out
Raw device generates PWM ripples and goes to drive three-phase three-wire system inverter after processing.
Have following two to suppress the DC component in three-phase three-wire system inverter output current, scheme possible in theory
Kind.
Scheme 1：Sampling respectively obtains DC component and AC compounent in three-phase three-wire system inverter output current；By institute
State after the adjusted device of DC component (such as PI regulations) is processed and be added in the AC compounent, collectively as the electric current loop
Value of feedback.The corresponding current loop control system principle diagram of this programme is as shown in Figure 3.
Scheme 2：Sampling respectively obtains DC component and AC compounent in three-phase three-wire system inverter output current；By institute
AC compounent is stated as the feedback of electric current loop, and the institute that is added to after the DC component adjusted device (such as PI regulations) is processed
State on the modulating wave of electric current loop output.The corresponding current loop control system principle diagram of this programme is as shown in Figure 4.
Scheme 1 changes three-phase three-wire system inverter output current by the value of feedback of change electric current loop, and scheme 2 is by changing
The modulating wave of time-dependent current ring output is changing three-phase three-wire system inverter output current.For both schemes, due to electric current loop
Set-point be exactly the desired sinusoidal ac without DC component, so when electric current loop reaches stable state, that is,
Three-phase three-wire system inverter output current is controlled, in set-point, also just to have reached suppression three-phase three-wire system inverter output electricity
The purpose of the DC component in stream.But affected by factors such as the temperature drifts, drift sampled, the integral element of the actuator can be introduced
(DC component in three-phase three-wire system inverter output current is the cycle of three-phase three-wire system inverter output current to common-mode signal
Meansigma methodss, the main purpose of actuator are to realize the Stability and dependability of control, in preventing three-phase three-wire system invertor operation
The voltage of appearance, current fluctuation cause DC component control is unstable, fluctuation is larger etc..If being not added with actuator, in actual electric network
In operation, the control of the DC component in three-phase three-wire system inverter output current will be difficult to meet and require, so actuator is
Requisite link), the presence of common-mode signal can cause actuator saturation, while can produce not to leakage current, modulation degree etc.
Profit affects.
DC component in known three-phase three-wire system inverter output current, meet such as between common-mode signal, difference mode signal
Lower relation：
In formula, idc (comm) is common-mode signal；Idc_a, idc_b, idc_c are respectively three-phase three-wire system inverter A phases, B
DC component in phase, C phase output currents；Idc_a (diff), idc_b (diff), idc_c (diff) are respectively phase three-wire three
Inverter A phase, B phase, C phase difference mode signal processed.
Based on this, to avoid, while the DC component in three-phase three-wire system inverter output current is suppressed, introducing altogether
Mould signal, feasible solution is：DC component in the three-phase three-wire system inverter output current that collects is carried out altogether
Mould differential mode is separated, then eliminate the common-mode signal having been introduced into, by the difference mode signal isolated (equivalent to without common-mode signal
DC component) adjusted device replaces the DC component application in the three-phase three-wire system inverter output current for having collected after processing
To in above two scheme, so as to change three-phase three-wire system inverter by the value of feedback or modulating wave of change electric current loop
During output current, it becomes possible to while DC component in three-phase three-wire system inverter output current is suppressed, it is to avoid produce altogether
Mould signal.Fig. 1 is the solution that the embodiment of the present invention is proposed for such scheme 1, corresponding current loop control system original
Reason block diagram is as shown in Figure 5；The solution that Fig. 2 is the embodiment of the present invention to be proposed for scheme 2, corresponding current loop control system
Theory diagram is as shown in Figure 6.
Wherein, common mode differential mode separation is carried out to the DC component in three-phase three-wire system inverter output current, extracts difference
The method of mould signal, can be according to the DC component in three-phase three-wire system inverter output current, between common-mode signal, difference mode signal
The relation of satisfaction is obtained, and is specifically included：
First, according to the DC component in the three-phase three-wire system inverter output current for collecting, it is calculated three-phase three
The common-mode signal of line inverter output, corresponding computing formula is
Idc (comm)=(idc_a+idc_b+idc_c)/3
Then, according to the DC component and calculated common mode in the three-phase three-wire system inverter output current for collecting
Component, is calculated the difference mode signal of three-phase three-wire system inverter output, and corresponding computing formula is
Seen from the above description, theoretically, by the three-phase three-wire system inverter output current DC component for sampling
Adjusted device is added to after processing the feedback or defeated of three-phase three-wire system inverter output current closed-loop control system (i.e. electric current loop)
On going out, three-phase three-wire system inverter output current can be controlled, in set-point, to suppress three-phase three so as to reach using electric current loop
The purpose of the DC component in line inverter output current.But in practical application, due to the integral element of the actuator
Common-mode signal can be introduced, so DC component of the present invention first to sampling carries out common mode differential mode separation, common mode then will be rejected
DC component after signal replaces the DC component for having sampled to be applied in such scheme, so avoids common-mode signal
Introduce.
Referring to Fig. 3, the embodiment of the invention discloses a kind of three-phase three-wire system inverter output current control system, to realize
The purpose of the DC component in suppression three-phase three-wire system inverter output current, including：
Sample circuit 100, obtains the DC component in three-phase three-wire system inverter output current and friendship for sampling respectively
Flow component；
Processor 200, the DC component for sampling to sample circuit 100 carry out common mode differential mode separation, extract difference
Mould signal；Using the actuator process difference mode signal；Difference mode signal after process is added to into what sample circuit 100 was sampled
In AC compounent, collectively as the value of feedback of electric current loop；
Wherein, the electric current loop for by three-phase three-wire system inverter output current control in set-point.
Additionally, the embodiment of the invention also discloses another three-phase three-wire system inverter output current control system, with reality
Now suppress three-phase three-wire system inverter output current in DC component purpose, including：
Sample circuit, obtains DC component in three-phase three-wire system inverter output current for sampling respectively and exchanges point
Amount；
Processor, for the sampling circuit samples to DC component carry out common mode differential mode separation, extract differential mode
Signal；Using the actuator process difference mode signal；The AC compounent that the sampling circuit samples are arrived is used as the anti-of electric current loop
Feedback, and the difference mode signal after process is added on the modulating wave of the electric current loop output；
Wherein, the electric current loop for by three-phase three-wire system inverter output current control in set-point.
Wherein, for any one disclosed above three-phase three-wire system inverter output current control system, processor
Common mode differential mode separation is carried out to the DC component, difference mode signal is extracted, is specifically included：Processor is according to the direct current point
Amount, is calculated the common-mode signal of three-phase three-wire system inverter output；According to the DC component and the common mode component, calculate
Obtain the difference mode signal of three-phase three-wire system inverter output.
Wherein, for any one disclosed above three-phase three-wire system inverter output current control system, the tune
Section device is pi regulator, but is not limited to.
Additionally, the embodiment of the invention also discloses a kind of three-phase three-wire system inverter, including it is as disclosed above any one
Three-phase three-wire system inverter output current control system.
In sum, theoretically, will be the three-phase three-wire system inverter output current DC component for sampling adjusted
In the feedback of the three-phase three-wire system inverter output current closed-loop control system (i.e. electric current loop) that is added to after device process or output, energy
Enough three-phase three-wire system inverter output current is controlled, in set-point, to suppress three-phase three-wire system inversion so as to reach using electric current loop
The purpose of the DC component in device output current.But in practical application, as the integral element of the actuator can be introduced altogether
Mould signal, so DC component of the present invention first to sampling carries out common mode differential mode separation, then will reject after common-mode signal
DC component replaces the DC component for having sampled to be applied in such scheme, so avoids the introducing of common-mode signal.
In this specification, each embodiment is described by the way of progressive, and what each embodiment was stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.For system disclosed in embodiment
For, as which corresponds to the method disclosed in Example, so description is fairly simple, related part is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in the case of the spirit or scope without departing from the embodiment of the present invention in other embodiments.Therefore,
The embodiment of the present invention is not intended to be limited to the embodiments shown herein, and be to fit to principles disclosed herein and
The consistent most wide scope of features of novelty.
Claims (9)
1. a kind of three-phase three-wire system inverter output current control method, it is characterised in that include：
Sampling respectively obtains DC component and AC compounent in three-phase three-wire system inverter output current；
Common mode differential mode separation is carried out to the DC component, difference mode signal is extracted；
Using the actuator process difference mode signal；
Difference mode signal after process is added in the AC compounent, collectively as the value of feedback of electric current loop；
Wherein, the electric current loop for by three-phase three-wire system inverter output current control in set-point.
2. a kind of three-phase three-wire system inverter output current control method, it is characterised in that include：
Sampling respectively obtains DC component and AC compounent in three-phase three-wire system inverter output current；
Common mode differential mode separation is carried out to the DC component, difference mode signal is extracted；
Using the actuator process difference mode signal；
Using the AC compounent as the value of feedback of electric current loop, and the difference mode signal after process is added to electric current loop output
Modulating wave on；
Wherein, the electric current loop for by three-phase three-wire system inverter output current control in set-point.
3. three-phase three-wire system inverter output current control method according to claim 1 and 2, it is characterised in that described
Common mode differential mode separation is carried out to the DC component, difference mode signal is extracted, including：
According to the DC component, the common-mode signal of three-phase three-wire system inverter output is calculated；
According to the DC component and the common mode component, the difference mode signal of three-phase three-wire system inverter output is calculated.
4. three-phase three-wire system inverter output current control method according to claim 1 and 2, it is characterised in that described
The difference mode signal is processed using actuator, including：
Using the pi regulator process difference mode signal.
5. a kind of three-phase three-wire system inverter output current control system, it is characterised in that include：
Sample circuit, obtains DC component and AC compounent in three-phase three-wire system inverter output current for sampling respectively；
Processor, for the sampling circuit samples to DC component carry out common mode differential mode separation, extract difference mode signal；
Using the actuator process difference mode signal；Difference mode signal after process is added to the exchange point that the sampling circuit samples arrive
In amount, collectively as the value of feedback of electric current loop；
Wherein, the electric current loop for by three-phase three-wire system inverter output current control in set-point.
6. a kind of three-phase three-wire system inverter output current control system, it is characterised in that include：
Sample circuit, obtains DC component and AC compounent in three-phase three-wire system inverter output current for sampling respectively；
Processor, for the sampling circuit samples to DC component carry out common mode differential mode separation, extract difference mode signal；
Using the actuator process difference mode signal；Feedback of the AC compounent that the sampling circuit samples are arrived as electric current loop, and
Difference mode signal after process is added on the modulating wave of the electric current loop output；
Wherein, the electric current loop for by three-phase three-wire system inverter output current control in set-point.
7. the three-phase three-wire system inverter output current control system according to claim 5 or 6, it is characterised in that process
Device carries out common mode differential mode separation to the DC component, extracts difference mode signal, specifically includes：
Processor is calculated the common-mode signal of three-phase three-wire system inverter output according to the DC component；According to described straight
Flow component and the common mode component, are calculated the difference mode signal of three-phase three-wire system inverter output.
8. the three-phase three-wire system inverter output current control system according to claim 5 or 6, it is characterised in that described
Actuator is pi regulator.
9. a kind of three-phase three-wire system inverter, it is characterised in that include：Three-phase three as any one of claim 5-8
Line inverter output current control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710030018.XA CN106558977B (en) | 2017-01-16 | 2017-01-16 | Three-phase three-wire system inverter and its output current control method and control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710030018.XA CN106558977B (en) | 2017-01-16 | 2017-01-16 | Three-phase three-wire system inverter and its output current control method and control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106558977A true CN106558977A (en) | 2017-04-05 |
| CN106558977B CN106558977B (en) | 2018-09-28 |
Family
ID=58446292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710030018.XA Active CN106558977B (en) | 2017-01-16 | 2017-01-16 | Three-phase three-wire system inverter and its output current control method and control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106558977B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733214A (en) * | 2017-11-15 | 2018-02-23 | 珠海格力电器股份有限公司 | Improve the method and apparatus and Switching Power Supply of Switching Power Supply stability |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060092676A1 (en) * | 2004-11-03 | 2006-05-04 | Square D Company | Push-pull inverter with snubber energy recovery |
| CN101335491A (en) * | 2007-06-27 | 2008-12-31 | 通用电气公司 | Cross current control for power converter system |
| CN101567638A (en) * | 2009-01-14 | 2009-10-28 | 南京航空航天大学 | Active output direct-current component control inverter and control method thereof |
| CN102437760A (en) * | 2010-09-29 | 2012-05-02 | 通用电气公司 | DC-link voltage balancing system and method for multilevel converters |
| CN203337725U (en) * | 2013-06-25 | 2013-12-11 | 广东明阳龙源电力电子有限公司 | Sampling circuit for network side phase voltage in grid connected photovoltaic inverter system |
| WO2016149322A1 (en) * | 2015-03-16 | 2016-09-22 | Finsix Corporation | Midpoint control and gain scheduling for power converters |
-
2017
- 2017-01-16 CN CN201710030018.XA patent/CN106558977B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060092676A1 (en) * | 2004-11-03 | 2006-05-04 | Square D Company | Push-pull inverter with snubber energy recovery |
| CN101335491A (en) * | 2007-06-27 | 2008-12-31 | 通用电气公司 | Cross current control for power converter system |
| CN101567638A (en) * | 2009-01-14 | 2009-10-28 | 南京航空航天大学 | Active output direct-current component control inverter and control method thereof |
| CN102437760A (en) * | 2010-09-29 | 2012-05-02 | 通用电气公司 | DC-link voltage balancing system and method for multilevel converters |
| CN203337725U (en) * | 2013-06-25 | 2013-12-11 | 广东明阳龙源电力电子有限公司 | Sampling circuit for network side phase voltage in grid connected photovoltaic inverter system |
| WO2016149322A1 (en) * | 2015-03-16 | 2016-09-22 | Finsix Corporation | Midpoint control and gain scheduling for power converters |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733214A (en) * | 2017-11-15 | 2018-02-23 | 珠海格力电器股份有限公司 | Improve the method and apparatus and Switching Power Supply of Switching Power Supply stability |
| CN107733214B (en) * | 2017-11-15 | 2019-10-08 | 珠海格力电器股份有限公司 | Improve the method and apparatus and Switching Power Supply of Switching Power Supply stability |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106558977B (en) | 2018-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| da Silva et al. | A digital PLL scheme for three-phase system using modified synchronous reference frame | |
| Suul et al. | Voltage-sensor-less synchronization to unbalanced grids by frequency-adaptive virtual flux estimation | |
| CN105676742B (en) | The control method of switching undisturbed between a kind of high-voltage frequency converter power frequency and frequency conversion | |
| CN105896554B (en) | A kind of three-phase four-wire system SVG device output violent change method | |
| Yada et al. | A new topology and control strategy for extraction of reference current using single phase SOGI-PLL for three-phase four-wire Shunt Active Power Filter | |
| CN105044492A (en) | Low-voltage electrical complete switch equipment temperature rise test system | |
| CN110266008A (en) | Based on the improved more level active power filters of neutral-point-clamped type | |
| Salim et al. | Simplified control scheme of unified power quality conditioner based on three-phase three-level (NPC) inverter to mitigate current source harmonics and compensate all voltage disturbances | |
| CN106558977A (en) | Three-phase three-wire system inverter and its output current control method and control system | |
| CN108306527B (en) | A method of inhibit unidirectional three-phase star to connect controlled rectifier line current Zero-crossing Distortion | |
| Dey et al. | Real time implementation of 3-phase 4-wire shunt hybrid active power filter based on PI controller | |
| Siva et al. | Mitigation of harmonics by shunt active power filter using synchronous detection method | |
| CN102623996B (en) | Active power filter closed loop control method based on decoupling resonance regulator array | |
| CN103956738B (en) | A kind of battery energy storage system control method having APF and SVG function concurrently | |
| CN108476011A (en) | The control device and drive system of motor | |
| EP2955812B1 (en) | Power transmission network | |
| CN106936143B (en) | A kind of Research on Unified Power Quality Conditioner current on line side balance control method | |
| Ukande et al. | Generalise PQ theory with SPWM for single phase shunt active filter applications | |
| EP3172825A1 (en) | A voltage source converter | |
| US20230231466A1 (en) | Cascaded power electronic transformer and control method therefor | |
| CN108847671A (en) | Busbar voltage fluctuation suppressing method and system suitable for alternating current-direct current mixing micro-capacitance sensor | |
| Chittora et al. | Harmonic current extraction and compensation in three phase three wire system using notch filter | |
| CN105119499B (en) | A kind of current control system suitable for bifurcation structure Modular multilevel converter | |
| Prasad¹ et al. | Comparison of Control Algorithms for Shunt Active Filter for Harmonic Mitigation | |
| CN107222114B (en) | A kind of unified control method of rectifier and inverter |
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 |