CN108134390A - A kind of novel active power filter control method - Google Patents
A kind of novel active power filter control method Download PDFInfo
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- CN108134390A CN108134390A CN201611091796.1A CN201611091796A CN108134390A CN 108134390 A CN108134390 A CN 108134390A CN 201611091796 A CN201611091796 A CN 201611091796A CN 108134390 A CN108134390 A CN 108134390A
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- control
- fuzzy
- controller
- active power
- apf
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- 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
- H02J3/01—Arrangements for reducing harmonics or ripples
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/20—Active power filtering [APF]
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention discloses a kind of novel active power filter control method, including Fuzzy PI Controller, repetitive controller, Active Power Filter-APF main circuit, it is characterized in that fuzzy PI hybrid control is combined by this method with Repetitive controller, form Compound Control Strategy, make up the shortcomings that fuzzy PI hybrid control is insufficient to harmonic current control accuracy and Repetitive controller response speed is slow, harmonic current is controlled, achieves good compensation effect.Repetitive controller and fuzzy PI hybrid control are used in conjunction with, Repetitive controller can track harmonic signal well, reduce the static error of system, and PI type Fuzzy can thus make APF possess good static and dynamic property with quick response.When APF systems reach steady-state operation, current error very little, when nonlinear load is mutated, although error can increase suddenly, Fuzzy PI Controller to be adjusted be adjusted to it is minimum.It is a kind of comparatively ideal APF harmonic currents control method.
Description
Technical field
The invention belongs to resonance inhibit field more particularly to it is a kind of fuzzy PI hybrid control is combined with Repetitive controller it is novel
Control Method of Active Power Filter.
Background technology
There is a large amount of nonlinear loads in modern power network, network voltage can be caused to distort, and generate harmonic pollution, seriously
The stable operation of power grid and the Electrical Safety of user are endangered, harmonic pollution has become the huge barrier of power system development at present
Hinder.In the research of harmonic wave control, Active Power Filter-APF（Active Power Filter, APF）As inhibition mains by harmonics
One of most effective means, have become and know together in the industry, have broad application prospects.
Timely and effectively compensation harmonic electric current is the important link in APF research work.And harmonic current is a kind of high frequency
AC signal, it is difficult to accomplish rapidly and accurately tracing control.Many scholars have done a large amount of work to study the control of harmonic current
Problem processed.At present, the Compensating Current Control Method of APF mainly includes：Triangular carrier control, this method are easily achieved, switch frequency
Rate is fixed, fast response time but control parameter is difficult to determine, is also easy to produce overshoot；Hysteresis control response is fast, without carrier wave, without spy
Determine times harmonic, shortcoming is that stagnant loop bandwidth is not easy to set, and the switching frequency of power device is also not fixed；Track with zero error dynamic is rung
Should be fast, but compare systematic parameter dependence, poor anti jamming capability；PI controls are a kind of control methods being used widely,
It can realize that no steady-state error is adjusted for direct current signal, and to this high-frequency AC components of the harmonic current of APF, tracking effect
It is bad.Some scholars prove that PI control bandwidths are limited by theoretical research, emulation, serious in the attenuation of medium-high frequency section, delayed phase
It is also obvious that AC signal can not be tracked in full frequency band, direct current signal can only without phase shift be tracked, and other frequency ranges are all deposited
In phase offset problem, with the raising of current signal frequency, phase shift problem is further serious.Therefore, PI controls are difficult to harmonic wave
AC signal accomplishes zero steady-state error tracing control.
At present the development trend of APF compensating current controls strategy be using Compound Control Strategy, by different control methods into
Row combines, and learns from other's strong points to offset one's weaknesses, to reach better control effect.
Invention content
The present invention addresses the above problem, devises a kind of novel active power filter control method, and this method will
Fuzzy PI hybrid control is combined with Repetitive controller, is formed Compound Control Strategy, is made up fuzzy PI hybrid control to harmonic current precise control
The shortcomings that degree is insufficient and Repetitive controller response speed is slow, controls harmonic current, achieves good compensation effect.
The technical solution adopted by the present invention is a kind of novel active power filter control method, including fuzzy PI hybrid control
Device, repetitive controller, Active Power Filter-APF main circuit.The Fuzzy PI Controller is by fuzzy control and PI control phases
With reference to, the two advantage is had both, and can overcome the disadvantages that deficiency each other, it can be effectively to APF compensation electric current progress tracing controls.It is wherein fuzzy
Control is summarized according to rich experiences, and control strategy is stated with natural language, goes out control rule by real data induction and conclusion
Intelligent Control Strategy.
The repetitive controller is a kind of application of internal model principle, according to internal model principle, control system to obtain compared with
Good tracking performance and zero steady-state error, it is necessary to one and external input amount are implanted into inside closed-loop system（Including instructing with disturbing
It is dynamic）Consistent mathematical model.Repetitive controller based on internal model principle is to be implanted into a forcing function generator in APF electric current loops,
It can provide and give identical output quantity as controller output with harmonic current.
The Active Power Filter-APF main circuit is a kind of for dynamic harmonic wave, the novel electric power of compensating reactive power
Electronic device, it can carry out quick tracing compensation to the harmonic wave of different size and frequency.
The invention has the advantages that the novel active power filter control method, by Repetitive controller and PI type Fuzzy control
System is used in conjunction with, and Repetitive controller can track harmonic signal well, reduces the static error of system, and PI type Fuzzy can
With quick response, APF can thus be made to possess good static and dynamic property.When APF systems reach steady-state operation, electricity
Stream error very little, when nonlinear load is mutated, although error can increase suddenly, Fuzzy PI Controller is to being adjusted it
It is adjusted to minimum.It is a kind of comparatively ideal APF harmonic currents control method.
Description of the drawings
The present invention will be further described with reference to the accompanying drawings and detailed description.The scope of the present invention not only limits to
In the statement of the following contents.
Fig. 1 is schematic block circuit diagram of the present invention.
Specific embodiment
As shown in the figure, the novel active power filter control method of the present invention, including Fuzzy PI Controller, Repetitive controller
Device, Active Power Filter-APF main circuit.
The Fuzzy PI Controller is to be combined fuzzy control and PI controls, has both the two advantage, and can overcome the disadvantages that
This is insufficient, effectively can carry out tracing control to APF compensation electric currents.Wherein fuzzy control is summarized according to rich experiences, with certainly
Right language expression control strategy goes out the Intelligent Control Strategy of control rule by real data induction and conclusion.In the present invention, it is first
The theory of fuzzy mathematics is first applied, the experience and knowledge for summarizing personnel forms fuzzy rule, and in advance rule and other parameter
It saves.Later by compensation electric current and the error of harmonic current and the change rate of error, input Fuzzy PI Controller the inside, warp
Calculation process is crossed, obtains proportionality coefficient and integral coefficient at this time, on-line tuning is carried out to former PI parameters.
The repetitive controller is a kind of application of internal model principle, according to internal model principle, control system to obtain compared with
Good tracking performance and zero steady-state error, it is necessary to one and external input amount are implanted into inside closed-loop system（Including instructing with disturbing
It is dynamic）Consistent mathematical model.Repetitive controller based on internal model principle is to be implanted into a forcing function generator in APF electric current loops,
It can provide and give identical output quantity as controller output with harmonic current.Repetitive controller Cycle by Cycle tires out input quantity
It is exported after adding.When input quantity level off to zero when, controller still constantly exports controlled quentity controlled variable, performance period signal generator work(
Energy.
The Active Power Filter-APF main circuit is a kind of for dynamic harmonic wave, the novel electric power of compensating reactive power
Electronic device, it can carry out quick tracing compensation to the harmonic wave of different size and frequency.APF can be by sampling load current
And each harmonic and idle separation are carried out, size, frequency and the phase of simultaneously active output current, and quick response are controlled,
Phase induced current in load is offset, realizes dynamic tracing compensation, and can not only mend harmonic wave but also mend idle and uneven.
Above with respect to the present invention specific descriptions, without limitation, it will be understood by those of ordinary skill in the art that, still
It can modify to the present invention or equivalent replacement, to reach identical technique effect；As long as meet using needs, all in this hair
Within bright protection domain.
Claims (4)
1. a kind of novel active power filter control method, including Fuzzy PI Controller, repetitive controller, active power filtering
Device main circuit, it is characterised in that fuzzy PI hybrid control is combined by this method with Repetitive controller, is formed Compound Control Strategy, is made up mould
The shortcomings that PI controls are insufficient to harmonic current control accuracy and Repetitive controller response speed is slow is pasted, harmonic current is controlled
System, achieves good compensation effect.
2. novel active power filter control method according to claim 1, which is characterized in that the PI type Fuzzy
Controller is to be combined fuzzy control and PI controls, has both the two advantage, and can overcome the disadvantages that deficiency each other, can be effectively to APF
It compensates electric current and carries out tracing control, wherein fuzzy control is summarized according to rich experiences, is stated control strategy with natural language, is led to
Cross the Intelligent Control Strategy that real data induction and conclusion goes out control rule.
3. novel active power filter control method according to claim 1, which is characterized in that the repetition control
Device processed is a kind of application of internal model principle, and according to internal model principle, control system is to obtain preferable tracking performance and zero stable state
Error, it is necessary to one and external input amount are implanted into inside closed-loop system（Including instruction and disturbance）Consistent mathematical model,
Repetitive controller based on internal model principle is to be implanted into a forcing function generator in APF electric current loops, can provide and be given with harmonic current
Identical output quantity is exported as controller.
4. novel active power filter control method according to claim 1, which is characterized in that the active electrical
Force filter main circuit is a kind of for dynamic harmonic wave, the novel electric power electric device of compensating reactive power, it can be to difference
The harmonic wave of size and frequency carries out quick tracing compensation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611091796.1A CN108134390A (en) | 2016-12-01 | 2016-12-01 | A kind of novel active power filter control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611091796.1A CN108134390A (en) | 2016-12-01 | 2016-12-01 | A kind of novel active power filter control method |
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| Publication Number | Publication Date |
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| CN108134390A true CN108134390A (en) | 2018-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611091796.1A Pending CN108134390A (en) | 2016-12-01 | 2016-12-01 | A kind of novel active power filter control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111355365A (en) * | 2020-03-20 | 2020-06-30 | 广东工业大学 | Power factor correction AC-DC converter |
| CN112015085A (en) * | 2020-07-09 | 2020-12-01 | 淮阴工学院 | Uninterrupted power supply inversion system based on repeated fuzzy controller and design method thereof |
-
2016
- 2016-12-01 CN CN201611091796.1A patent/CN108134390A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111355365A (en) * | 2020-03-20 | 2020-06-30 | 广东工业大学 | Power factor correction AC-DC converter |
| CN112015085A (en) * | 2020-07-09 | 2020-12-01 | 淮阴工学院 | Uninterrupted power supply inversion system based on repeated fuzzy controller and design method thereof |
| CN112015085B (en) * | 2020-07-09 | 2022-03-29 | 淮阴工学院 | Uninterrupted power supply inversion system based on repeated fuzzy controller and design method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180608 |