CN101373897B - Control method for double closed-loop cascade in synchronous revolution coordinates system - Google Patents
Control method for double closed-loop cascade in synchronous revolution coordinates system Download PDFInfo
- Publication number
- CN101373897B CN101373897B CN2007100451114A CN200710045111A CN101373897B CN 101373897 B CN101373897 B CN 101373897B CN 2007100451114 A CN2007100451114 A CN 2007100451114A CN 200710045111 A CN200710045111 A CN 200710045111A CN 101373897 B CN101373897 B CN 101373897B
- Authority
- CN
- China
- Prior art keywords
- voltage
- current
- instruction
- loop
- phase
- 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.)
- Active
Links
Images
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
- Y02E40/20—Active power filtering [APF]
Landscapes
- Control Of Eletrric Generators (AREA)
Abstract
The invention relates to a double closed-loop cascade control method based on synchronous rotating coordinates, which adopts a double closed-loop cascade control policy with an outer voltage loop and an inner current loop, transforms through a phase locking and rotational coordinates, and comprises the steps such as outer loop pressure regulation, network voltage feedforward, instruction extraction, inner loop current regulation, three-dimensional vector generator collection processing, etc. The double closed-loop cascade control method not only solves the harmonic problem which commonly exists in the comprehensive application of the power electronic technology very effectively, but also overcomes the problem that the utilization ratio is low when measuring the voltage by using a direct current in the existing three phase four wire type active power filter system, thereby creating the technical support for the lectotype range expansion of power devices and safety of all devices of the entire running network system at the same time.
Description
Technical field
The present invention relates to the solution of a kind of reactive power compensation and harmonic current, two closed loop cascade control method of outer voltage under particularly a kind of synchronous rotating frame and current inner loop belong to the active power filtering technical field.
Background technology
Development along with power electronic technology and industrial technology; Various power electronic equipments:, be widely used in fields such as electric power, metallurgy, mine, iron and steel, chemical industry like nonlinear loads such as convertor assembly, transformer, motor, generator speed change drive apparatus, arc furnace, welding equipments.The application of these power electronic technology and relevant devices has produced huge economic benefit on the one hand, the harmonic problem that thereupon produces on the other hand, and also severe contamination electrical network.A large amount of harmonic currents that produced by apparatus and circuit make the capacitor of power supply grid and system produce parallel resonance, and harmonic current is amplified, and cause capacitor overload or damage.In addition, harmonic current also can make the operating temperature of power transformer, cable, motor rise, and causes the parts loss to increase and quickens ageing of insulation, finally service life of equipment is shortened.Simultaneously, harmonic wave also can make control device such as range controller, computer integrated protection, numerical control device etc. produce malfunction or tripping, has a strong impact on the normal operation of whole electromechanical equipment.
Therefore, how reduce effectively in addition harmonic carcellation to the adverse effect of power supply network system and relevant power consumption equipment, guarantee that electric power networks and equipment safety operation have become power industry and user and urgently expected the problem that solves.
Active Power Filter-APF is to solve very effective and efficient manner of harmonic problem, and research is a lot of both at home and abroad in recent years.External existing matured product is used, yet domestic present many places are in conceptual phase.Existing active electric filter device generally adopts the control strategy under ABC three phase coordinate systems, is prone to adopt pure hardware to realize.Yet this kind mode generally adopts SPWM (sinusoidal triangular wave pwm), and the dc voltage utilance is low, and this has proposed high requirement to the power device type selecting.
Summary of the invention
The object of the invention: be intended to propose outer voltage and two closed loop cascade control method of current inner loop under a kind of synchronous rotating frame, can improve the dc voltage utilance, reduced the power device selection pressure, be beneficial to again simultaneously realize digital control.
Two closed loop cascade control method of outer voltage under this synchronous rotating frame and current inner loop; Adopt two closed loop tandem control strategies of outer voltage and current inner loop; Reach rotating coordinate transformation mutually by lock, outer shroud voltage-regulation, voltage feed-forward control, instruction fetch, interior circular current are regulated and the three-dimensional space vectors generator compiles all step compositions of processing.
Described lock reaches rotating coordinate transformation mutually; Be that three-phase current ifa, ifb, ifc and load current ila, ilb and the ilc that respectively electrical network three-phase voltage U sa, Usb, Usc, active electric filter device is exported is rotated coordinate transform, and also should the electrical network three-phase voltage be handled through lock mutually simultaneously; Obtain line voltage component Usd, Usq and Us0 under the dq0 coordinate system, obtain three-phase current component ifd, ifq, the if0 of active electric filter device output, obtain load current component ild, ilq, il0.
Described voltage feed-forward control is handled and is meant that line voltage component Usd, Usq and Us0 to after rotation transformation, obtaining carry out feed-forward process, obtains corresponding voltage feed-forward control amount Usdf, Usqf and Us0f.
Described instruction fetch is meant extracting corresponding instruction current ildh, ilqh, il0h in the load current component that after rotation transformation, obtains.
Described outer shroud voltage-regulation; Be meant when electrical network three-phase voltage, device output three-phase current and load current are carried out Rotating Transition of Coordinate; With the outer shroud voltage regulator to direct voltage Udc-1 and direct voltage Udc-2's and compare with the given Udc-r of total voltage; Through the outer voltage adjuster, produce the d axle instruction current idcd of control DC side total voltage; To capacitor C
1The direct voltage Udc-1 and the capacitor C at two ends
2Voltage difference between the direct voltage Udc-2 at two ends and the given idc0 of balanced voltage compare, and produce 0 instruction current idc0 of control dc-voltage balance through the outer voltage adjuster.
Circular current is regulated in described, be meant with handles through voltage feed-forward control the voltage feed-forward control amount Usdf, Usqf and the Us0f that obtain, through three-phase current component ifd, ifq and the fi0 of the active electric filter device output of rotating coordinate transformation, through the instruction current ildh, ilqh and the il0h that obtain after the instruction fetch and through the outer shroud voltage regulator regulate handle the instruction current idcd, the idc0 that obtain carry out together in circular current regulate instruction ido, iqo and i0o under the processing acquisition dq0 coordinate system.
Finally compile instruction ido, iqo and i0o under the dq0 coordinate system, and drive the switching device in the whole system by it by the three-dimensional space vectors generator.
Two closed loops serial connection control methods according to voltage, outer shroud and current inner loop under this synchronous rotating frame of above technical scheme proposition; Can not only very solve ubiquitous harmonic problem in the power electronic technology integrated application effectively, and overcome the direct current that existing three-phase and four-line formula Active Power Filter-APF system exists and survey the low problem of voltage utilization; Thereby also be that technical support is created in the type selecting face expansion of power device and the safe operation of whole service network system all devices.
Description of drawings
Fig. 1 is the control strategy block diagram of this invention
Fig. 2 control strategy application circuit of the present invention
The interior circular current adjusting of 1-lock phase 2-rotating coordinate transformation 3-outer shroud voltage-regulation 4-instruction fetch 5-voltage feed-forward control 6-7-three-dimensional space vectors generator 8-electric current and voltage modulate circuit 9-carrier wave filter circuit 9-1C mode filter 10-digital signal processor 11-man-machine interface 12-drive circuit 13-inverter bridge 14-accumulator Usa, Usb, Usc are electrical network A phase, B phase, C phase voltage among the figure, and ifa, ifb, ifc are A phase, B phase, the C phase current of device output; Ila, ilb, ilc are load current; Usd, Usq, Us0 are the component of voltage on the d axle under the d-q-0 coordinate system, q axle and 0; Ifd, ifq, if0 are the load current component on the d axle under the d-q-0 coordinate system, q axle and 0; Udc-r is the DC side reference voltage, and Udc-1 is a dc voltage one, and Udc-2 is a dc voltage two.
Embodiment
Further set forth the present invention and provide embodiments of the invention below in conjunction with accompanying drawing 1.
Two closed loop serial connection control methods of the voltage under this synchronous rotating frame, outer shroud and current inner loop; Adopt two closed loop tandem control strategies of outer voltage and current inner loop; And reaching rotating coordinate transformation mutually through lock, outer shroud voltage-regulation, voltage feed-forward control, instruction fetch, interior circular current are regulated and the three-dimensional space vectors generator compiles step such as processing and forms.
(1) realization of outer shroud Voltage loop adjusting
To Udc-1 and Udc-2 voltage and compare with the given Udc-r of total voltage, through outer voltage adjuster 3, produce the control DC side always with reference to the d axle instruction current idcd of voltage; Difference and balanced voltage given 0 to Udc-1 and Udc-2 voltage compare, and produce 0 instruction current idc0 of control dc-voltage balance through the outer voltage adjuster.
(2) realization of interior circular current ring adjusting
Load current ila, ilb and ilc are through obtaining amount ild, ilq and the il0 under the dq0 coordinate system behind the rotating coordinate transformation 2.Ild, ilq and il0 obtain instruction current ildh, ilqh and il0h after instruction fetch 4.
Device output current ifa, ifb and ifc are through obtaining amount ifd, ifq and the if0 under the dq0 coordinate system behind the rotating coordinate transformation 2.
Line voltage Usa, Usb and Usc are through obtaining amount Usd, Usq and the Us0 under the dp0 coordinate system behind the rotating coordinate transformation 2, Usd, Usq and Us0 obtain voltage feed-forward control amount Usdf, Usqf and Us0f behind voltage feed-forward control 5.
Ild, ilq, il0, ildh, ildqh, il0, Usdf, Usqf and Us0f obtain instruction ido, iqo and the i0o under the dq0 coordinate system after interior circular current regulates 6.Ido, iqo and i0o obtain final control signal behind three-dimensional space vectors generator 7, be used for the driving switch device.
(3) realization of voltage feed-forward control processing
Line voltage Usa, Usb and Usc are through obtaining amount Usd, Usq and the Us0 under the dq0 coordinate system behind the rotating coordinate transformation 2, Usd, Usq and Us0 obtain voltage feed-forward control amount Usdf, Usqf and Us0f behind voltage feed-forward control 5.
Voltage feed-forward control is handled to be actually and is carried out certain processing to the line voltage amount under the synchronous rotating frame, and what obtain two joins in the controlled quentity controlled variable, and this method promptly is called feedforward.
Accompanying drawing 2 is that the utility model controlling object system constitutes; Comprise rectification inverter circuit and control circuit; Rectification inverter circuit is made up of inverter bridge 13, accumulator 14, filter circuit 9; It is characterized in that: control circuit comprises voltage and current detection circuit 8, individual digit signal processor 10, man-machine interface 11 and drive circuit 12; Wherein, digital signal processor 10 links to each other with voltage and current detection circuit 8, man-machine interface 11 and drive circuit 12 respectively, high-power switch tube (S on drive circuit 12 and inverter bridge 13 arms
1S
2S
3S
4S
5S
6) link to each other.
Claims (1)
1. two closed loop cascade control method under the synchronous rotating frame; It is characterized in that: the two closed loop tandem control strategies that adopt outer voltage and current inner loop; Reach rotating coordinate transformation mutually by lock, outer shroud voltage-regulation, voltage feed-forward control, instruction fetch, interior circular current are regulated and the three-dimensional space vectors generator compiles all step compositions of processing;
Wherein, It is that three-phase current ifa, ifb, ifc and load current ila, ilb and the ilc that respectively electrical network three-phase voltage U sa, Usb, Usc, active electric filter device is exported is rotated coordinate transform that described lock reaches rotating coordinate transformation mutually, and also should the electrical network three-phase voltage be handled through lock mutually simultaneously; Obtain line voltage component Usd, Usq and Us0 under the dq0 coordinate system, three-phase current component ifd, ifq, the if0 of active electric filter device output, load current component ild, ilq, il0;
Described voltage feed-forward control is handled and is meant that line voltage component Usd, Usq and Us0 to after rotation transformation, obtaining carry out feed-forward process, obtains corresponding voltage feed-forward control amount Usdf, Usqf and Us0f;
Described instruction fetch is meant extracting corresponding instruction current ildh, ilqh, il0h in the load current component that after rotation transformation, obtains;
Described outer shroud voltage-regulation is meant when electrical network three-phase voltage, active electric filter device output three-phase current and load current are carried out Rotating Transition of Coordinate, with the outer shroud voltage regulator to the middle capacitor C of accumulator (14)
1Capacitor C in the direct voltage Udc-1 at two ends and the accumulator (14)
2The direct voltage at two ends be Udc-2's and compare with the given Udc-r of total voltage, through the outer shroud voltage regulator, produces the d axle instruction current idcd of control DC side total voltage; To capacitor C
1The direct voltage Udc-1 and the capacitor C at two ends
2Voltage difference between the direct voltage Udc-2 at two ends and balanced voltage is given compares produces 0 instruction current idc0 of control dc-voltage balance through the outer shroud voltage regulator; Circular current is regulated in described, be meant with handles through voltage feed-forward control the voltage feed-forward control amount Usdf, Usqf and the Us0f that obtain, through three-phase current component ifd, ifq and the if0 of the active electric filter device output of rotating coordinate transformation, through the instruction current ildh, ilqh and the il0h that obtain after the instruction fetch and through the outer shroud voltage regulator regulate handle the instruction current idcd, the idc0 that obtain carry out together in circular current regulate instruction ido, iqo and i0o under the processing acquisition dq0 coordinate system; Finally compile instruction ido, iqo and i0o under the dq0 coordinate system by the three-dimensional space vectors generator, and by the switching device in the three-dimensional space vectors generator driven whole system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100451114A CN101373897B (en) | 2007-08-21 | 2007-08-21 | Control method for double closed-loop cascade in synchronous revolution coordinates system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100451114A CN101373897B (en) | 2007-08-21 | 2007-08-21 | Control method for double closed-loop cascade in synchronous revolution coordinates system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101373897A CN101373897A (en) | 2009-02-25 |
| CN101373897B true CN101373897B (en) | 2012-11-28 |
Family
ID=40447892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100451114A Active CN101373897B (en) | 2007-08-21 | 2007-08-21 | Control method for double closed-loop cascade in synchronous revolution coordinates system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101373897B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101546913A (en) * | 2009-04-21 | 2009-09-30 | 上海追日电气有限公司 | Multifunctional high-power electronic load and control method thereof |
| CN101963787B (en) * | 2009-07-22 | 2012-08-08 | 河南森源电气股份有限公司 | Dual feedback loop control method of power active filter |
| CN103757609B (en) * | 2014-01-29 | 2016-01-27 | 北京七星华创电子股份有限公司 | A kind of microenvironment pressure dispatching method based on serials control |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1758520A (en) * | 2005-10-31 | 2006-04-12 | 华中科技大学 | Inverter of instantaneous voltage PID analogue controlled |
| CN1913320A (en) * | 2006-07-24 | 2007-02-14 | 华中科技大学 | Digital controlled inverter and its control method |
-
2007
- 2007-08-21 CN CN2007100451114A patent/CN101373897B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1758520A (en) * | 2005-10-31 | 2006-04-12 | 华中科技大学 | Inverter of instantaneous voltage PID analogue controlled |
| CN1913320A (en) * | 2006-07-24 | 2007-02-14 | 华中科技大学 | Digital controlled inverter and its control method |
Non-Patent Citations (1)
| Title |
|---|
| 李勋等.基于双环控制的三相SVPWM逆变器研究.电力电子技术.2003,37(05), * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101373897A (en) | 2009-02-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102916437B (en) | The soft combination method of a kind of grid-connected converter | |
| CN102255529B (en) | Comprehensive control method for high-power efficient energy consuming high-frequency switching power supply | |
| CN104467022A (en) | Method for controlling photovoltaic grid-connected inverter | |
| CN202353232U (en) | High-voltage cascaded inverter power unit grid-connection feedback device | |
| CN102496950A (en) | Power unit grid-connected and feedback device for high-voltage concatenated frequency converter | |
| CN101373897B (en) | Control method for double closed-loop cascade in synchronous revolution coordinates system | |
| CN202085085U (en) | Large power efficient energy-consuming high frequency switch power supply | |
| Liu et al. | Dynamic circulating current suppression method for multiple hybrid power parallel grid-connected inverters with model reference adaptive system | |
| CN101546913A (en) | Multifunctional high-power electronic load and control method thereof | |
| CN104779632B (en) | Based on the energy storage system control method under different mode in micro-capacitance sensor | |
| CN202940630U (en) | High-power charging and discharging machine with reactive compensation function | |
| Jing et al. | A survey on control strategies of dynamic voltage restorer | |
| Olloqui et al. | Modulated model predictive rotor current control (M 2 PC) of a DFIG driven by an indirect matrix converter with fixed switching frequency | |
| Yu et al. | Internal model startup control for VSC-LCC based hybrid pseudo bipolar HVDC system | |
| CN207069918U (en) | Static Electro minor voltage-stabilized power supply | |
| CN102832682A (en) | High-power charging and discharging machine with reactive compensation function | |
| Dib et al. | Adaptive neuro-fuzzy inference system based DVR controller design | |
| Ahuja et al. | Coordinated fault ride through strategy for SCIG based WECS | |
| Trzynadlowski et al. | A tandem inverter for high-performance AC drives | |
| CN210807129U (en) | Rectifier and low-voltage inverter array power supply system | |
| CN103812211B (en) | A kind of seamless fast cutting system of intelligent grid and method based on becoming ginseng with net | |
| Kalyan et al. | Analysis and design of power electronic transformer based power quality improvement | |
| CN102709935B (en) | Distributed type photovoltaic micro electric network group net | |
| CN100388608C (en) | Method of controlling zero voltage difference of rectifier after break of uninterruptive power mean line | |
| Hu et al. | A voltage sag suppression method with short response time based on energy storage system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230227 Address after: 441000 No. 59, Guanyu Road, Tuanshan Town, Xiangyang High tech Development Zone, Hubei Province Patentee after: Hubei Chasri New Energy Technology Co.,Ltd. Address before: 200331 Building 9, Lane 88, Wuwei Road, Putuo District, Shanghai Patentee before: Shanghai Surpass Sun Electric Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 441000 No. 59, Guanyu Road, Tuanshan Town, Xiangyang High tech Development Zone, Hubei Province Patentee after: Borg Warner New Energy (Xiangyang) Co.,Ltd. Address before: 441000 No. 59, Guanyu Road, Tuanshan Town, Xiangyang High tech Development Zone, Hubei Province Patentee before: Hubei Chasri New Energy Technology Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |