CN107645163A - A kind of new harmonic compensation method - Google Patents
A kind of new harmonic compensation method Download PDFInfo
- Publication number
- CN107645163A CN107645163A CN201610582420.4A CN201610582420A CN107645163A CN 107645163 A CN107645163 A CN 107645163A CN 201610582420 A CN201610582420 A CN 201610582420A CN 107645163 A CN107645163 A CN 107645163A
- Authority
- CN
- China
- Prior art keywords
- harmonic
- compensation method
- harmonic compensation
- voltage
- new
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
-
- 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
- Y02E40/40—Arrangements for reducing harmonics
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
- Power Conversion In General (AREA)
Abstract
The present invention discloses a kind of new harmonic compensation method, selective harmonic compensation method of this method based on voltage, using multiple complex coefficient filter to extract harmonic voltage, and the harmonic compensation amount detected is exported by the Generalized Integrator (SGI) under rest frame.Multiple complex coefficient filter can be accurately separated the fundamental wave harmony wave component of power network when power network is in state of disturbance, and accurate reference value is provided for control SAPF.Use the new harmonic compensation method of the present invention, operand can effectively be reduced, lift detection speed, latency issue is controlled well, the percent harmonic distortion in power network can be significantly decreased, selected each harmonic has also obtained good compensation simultaneously, has good practicality, and compensating APF control research has certain reference value.
Description
Technical field
The invention belongs to harmonic voltage to compensate field, more particularly to a kind of selective harmonic compensation method based on voltage.
Background technology
In recent years, as the continuous development of Power Electronic Technique, Active Power Filter-APF (APF) suppress harmonic wave as a kind of
Pollution, the efficient apparatus for improving the quality of power supply, it has also become the focus of people's research, in electric railway, power system, photovoltaic simultaneously
The field extensive applications such as net.
At present, the various device for power switching and other nonlinear loads used in power distribution network, turning for electric energy is facilitated
Change, but result in a large amount of harmonic current injection power networks, serious threat safe operation and the normal use of power network and electrical equipment.
The capacitor of corrected output factor also increases the generation of resonance phenomena in power electronic equipment simultaneously, is exaggerated by harmonic current
Caused harmonic voltage.Specified subharmonic current detection method under more synchronous rotating frames, although for each harmonic
Detection is very accurate, but due to carry out computing under multiple synchronous rotating frames, therefore cause operand excessive, detection
Response speed is slow.The grid-connected PHASE-LOCKED LOOP PLL TECHNIQUE eliminated based on particular harmonic, but computing is excessively complicated, and real-time is bad.Using humorous
Wavelength-division time detection combines single PI controllers and concentrates electric current loop, and adds phase compensation in detection to suppress detection
With influence of the intrinsic time delay of electric current loop to stability of control system, but unresolved electric current loop tracking is concentrated using single PI controllers
Existing static difference problem during each selection frequency harmonic component.
The content of the invention
The present invention is aiming above mentioned problem, there is provided a kind of new harmonic compensation method, this method are based on voltage
Selective harmonic compensation method, harmonic voltage is extracted using multiple complex coefficient filter, and by wide under rest frame
Adopted integrator (SGI) exports the harmonic compensation amount detected, can effectively reduce operand, lifts detection speed, very well
Ground controls latency issue.
The technical solution adopted by the present invention is a kind of new harmonic compensation method, including voltage lock phase, main circuit and drive
Dynamic, PWM, current follow-up control, harmonic current extraction, nonlinear load.
The voltage locks phase, and by being realized based on more repeat factor first-order bandpass filter state estimators, it is by making
An orthogonal binary system is formed with the Clarke transform under rest frame, it is possible to achieve the application of complex coefficient filter.
Described main circuit and driving, using three-phase fully-controlled bridge circuit, full-controlled device uses IGBT.It is basic using IGBT
Power switch component, form the accommodation function module of three-phase inverter.
Described PWM, effect are according to the mutual pass between the command signal of compensation electric current and actual compensation electric current
System, draw the pwm signal of the control each device break-make of main circuit.
Described current follow-up control, effect are that the finger of compensation electric current is drawn according to the compensation purpose of Active Power Filter-APF
Signal is made, that is, it is expected the compensating current signal as caused by Active Power Filter-APF.
Described harmonic current extraction, the extraction of harmonic current is carried out using Fast Fourier Transform (FFT) method (FFT).
Described nonlinear load is made up of three-phase diode rectifier bridge and its direct current side resistance.
The beneficial effects of the invention are as follows：The new harmonic compensation method of the present invention, it can effectively reduce operand, lifting detection
Speed, latency issue is controlled well, can significantly decrease the percent harmonic distortion in power network, while selected each harmonic
Also good compensation has been obtained, there is good practicality, compensating APF control research has certain reference value.
Brief 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 herein below.
Fig. 1 is schematic block circuit diagram of the present invention.
Embodiment
As illustrated, the new harmonic compensation method of the present invention, including voltage lock phase, main circuit and driving, PWM,
Current follow-up control, harmonic current extraction, nonlinear load.
The voltage locks phase, and by being realized based on more repeat factor first-order bandpass filter state estimators, it is by making
An orthogonal two-phase is formed with the Clarke transform under rest frameSystem, it is possible to achieve complex coefficient filter
Using.The main advantage of more repeat factor filtering is that filter signal will not be made to produce phase when each harmonic passes through bandpass filter
Move.The respective harmonic voltage of harmonic controller processing, while produce a reference current based on the frequency harmonic wave!When using whole
During body harmonic compensation, the reference current of wave filter is equal to the sum of all single harmonic component reference currents.
Described main circuit and driving, using three-phase fully-controlled bridge circuit, full-controlled device uses IGBT.It is basic using IGBT
Power switch component, form the accommodation function module of three-phase inverter.Switching frequency is 10 kHz, a current sample cycle
Interior (10 kHz, 100s) completion status observation and faults-tolerant control.
Described PWM, effect are according to the mutual pass between the command signal of compensation electric current and actual compensation electric current
System, draw the pwm signal of the control each device break-make of main circuit.
Described current follow-up control, effect are that the finger of compensation electric current is drawn according to the compensation purpose of Active Power Filter-APF
Signal is made, that is, it is expected the compensating current signal as caused by Active Power Filter-APF.
Described harmonic current extraction, the extraction of harmonic current is carried out using Fast Fourier Transform (FFT) method (FFT).
Described nonlinear load is made up of three-phase diode rectifier bridge and its direct current side resistance.Due to voltage and electric current not
Linear, in the input, running in load, the relation of voltage and current often changes, and harmonic wave is produced with this,
As harmonic source.
Above with respect to the present invention specific descriptions, without limitation, it will be understood by those within the art that, still
The present invention can be modified or equivalent substitution, to reach identical technique effect；As long as satisfaction uses needs, all in this hair
Within bright protection domain.
Claims (5)
- A kind of 1. new harmonic compensation method, it is characterised in that：Selective harmonic compensation method of this method based on voltage, use Multiple complex coefficient filter is exported to extract harmonic voltage by the Generalized Integrator (SGI) under rest frame The harmonic compensation amount detected.
- 2. new harmonic compensation method according to claim 1, it is characterised in that the voltage locks phase, by based on more Repeat factor first-order bandpass filter state estimator realizes that it forms one by using the Clarke transform under rest frame Individual orthogonal two-phaseSystem, it is possible to achieve the application of complex coefficient filter.
- 3. new harmonic compensation method according to claim 1, it is characterised in that described current follow-up control, effect It is the command signal that compensation electric current is drawn according to the compensation purpose of Active Power Filter-APF, that is, it is expected to be produced by Active Power Filter-APF Raw compensating current signal.
- 4. new harmonic compensation method according to claim 1, it is characterised in that described PWM, effect are roots According to the correlation between the command signal of compensation electric current and actual compensation electric current, the control each device break-make of main circuit is drawn Pwm signal.
- 5. new harmonic compensation method according to claim 1, it is characterised in that described main circuit and driving, use Three-phase fully-controlled bridge circuit, full-controlled device use IGBT, using IGBT as prime power switch element, form the special of three-phase inverter Use functional module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610582420.4A CN107645163A (en) | 2016-07-22 | 2016-07-22 | A kind of new harmonic compensation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610582420.4A CN107645163A (en) | 2016-07-22 | 2016-07-22 | A kind of new harmonic compensation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107645163A true CN107645163A (en) | 2018-01-30 |
Family
ID=61109895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610582420.4A Pending CN107645163A (en) | 2016-07-22 | 2016-07-22 | A kind of new harmonic compensation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107645163A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110572087A (en) * | 2019-09-04 | 2019-12-13 | 湖南匡楚科技有限公司 | motor device based on electric power harmonic state control |
| CN112072663A (en) * | 2020-09-10 | 2020-12-11 | 武汉大学 | Harmonic control method based on novel wavelet pulse width modulation and application |
| CN113746108A (en) * | 2021-08-12 | 2021-12-03 | 电子科技大学 | T-type three-level SAPF open circuit fault sequence model prediction fault-tolerant control method |
-
2016
- 2016-07-22 CN CN201610582420.4A patent/CN107645163A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110572087A (en) * | 2019-09-04 | 2019-12-13 | 湖南匡楚科技有限公司 | motor device based on electric power harmonic state control |
| CN112072663A (en) * | 2020-09-10 | 2020-12-11 | 武汉大学 | Harmonic control method based on novel wavelet pulse width modulation and application |
| CN112072663B (en) * | 2020-09-10 | 2022-03-11 | 武汉大学 | Harmonic control method based on wavelet pulse width modulation and application |
| CN113746108A (en) * | 2021-08-12 | 2021-12-03 | 电子科技大学 | T-type three-level SAPF open circuit fault sequence model prediction fault-tolerant control method |
| CN113746108B (en) * | 2021-08-12 | 2023-05-09 | 电子科技大学 | T-type three-level SAPF open circuit fault sequence model prediction fault tolerance control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Li et al. | Multiple-loop digital control method for a 400-Hz inverter system based on phase feedback | |
| CN103066607A (en) | STATCOM current tracking and compensation method | |
| CN110247434B (en) | Virtual synchronous motor self-inertia adjustment-based grid-connected control method and system | |
| CN103441502B (en) | Parallel single-phase H-bridge cascade type active electric power filter and method thereof | |
| CN107645163A (en) | A kind of new harmonic compensation method | |
| CN101577427B (en) | Detection control method of self-adapting tuning passive power filter | |
| CN102545265B (en) | Method for controlling grid-connected inverter with anti-load disturbance function | |
| CN106300350A (en) | A kind of Active Power Filter-APF using New type of current controller | |
| CN102761138A (en) | LCL type grid-connected inverter without resonance damping and integrated design method thereof | |
| CN105071390B (en) | Control method of H-bridge three-level active power filter and system | |
| 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 | |
| Jayakrishna et al. | Fuzzy logic control based three phase shunt active filter for voltage regulation and harmonic reduction | |
| Mekhilef et al. | Single-phase hybrid active power filter with adaptive notch filter for harmonic current estimation | |
| Sebasthirani et al. | PERFORMANCE ENHANCEMENT OF SHUNT ACTIVE POWER FILTER WITH FUZZY AND HYSTERESIS CONTROLLERS. | |
| CN104953615B (en) | Unified controller and control method of single-stage Z-source photovoltaic grid-connected inverter | |
| CN105977980A (en) | Active power filter command current extraction method with power factor being adjustable | |
| CN106253277B (en) | Instruction current computing circuit and Active Power Filter-APF based on Nonlinear Tracking Differentiator | |
| Karaman et al. | Performing reactive power compensation of three-phase induction motor by using parallel active power filter | |
| Swain et al. | A new grid synchronization scheme for a three phase PV system employing Kalman filtering | |
| CN107666151A (en) | A kind of combining inverter direct Power Control based on rest frame | |
| Chatterjee et al. | Performance improvement in selective harmonic compensation of Shunt Hybrid Active Filter | |
| Wang et al. | A harmonic detection strategy based on FBD power theory | |
| Kharad et al. | Modeling and Simulation of Unified Power Quality Conditioner (UPQC) | |
| CN105978378B (en) | A kind of circulation of inverter parallel connection detects and controls method | |
| CN103956776A (en) | Grid connection method for single-phase voltage-source-type inverter power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180130 |
|
| WD01 | Invention patent application deemed withdrawn after publication |