CN101710705A - Five-level active power filter control system based on DSP - Google Patents
Five-level active power filter control system based on DSP Download PDFInfo
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- CN101710705A CN101710705A CN200910228953A CN200910228953A CN101710705A CN 101710705 A CN101710705 A CN 101710705A CN 200910228953 A CN200910228953 A CN 200910228953A CN 200910228953 A CN200910228953 A CN 200910228953A CN 101710705 A CN101710705 A CN 101710705A
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- 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
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- 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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Abstract
The invention discloses a five-level active power filter control system based on DSP, which is composed of a control panel, a central data processing circuit, a photoelectric conversion circuit, a fiber optical communication system, a driving circuit, a five-level power circuit and a current sampling circuit. The invention improves control speed and the precision and solves the problem of complex traditional fixed-point DSP programming so as to ensure that the whole control system has favourable adjustment performance and reliability; in addition, the invention improves signal debility and poor antijamming capability caused by the traditional analog signal transmission mode, improves system volume and offset voltage and improves the harmonic characteristic of the output voltage; the triggering chip of a drive pulse has strong driving capability, convenient control, overvoltage and overcurrent protection functions and wide market application prospect.
Description
(1) technical field:
The invention belongs to electric power system five-level active power filter (Active PowerFilter, APF) control technology field, be a kind of based on new digital signal processor (digitalsignal processor, five-level active power filter control system DSP).
(2) background technology:
Active Power Filter-APF is a kind of power electronics bucking-out system, is connected between power supply and the important load, has good dynamic property and harmonic characterisitic.Active Power Filter-APF can be regarded a controlled current source as, its basic functional principle is that the contained humorous reactive current that involves in the system is detected, and produce offset current with 180 ° of its equal and opposite in directions, phase difference, inject transmission line, the counteracting humorous reactive current that involves wherein.Five-level active power filter is made of five level converter systems, filter inductance and sample circuit and control system usually, its control system many by fixed point type DSP as the control core, one of whole system, secondary side control signal and feedback signal adopt the mode of analog signal transmission more, and there are shortcomings such as hardware circuit complexity, debug difficulties, poor anti jamming capability and programming complexity in control system.Because it is very high that high-power circuit requires trigger impulse, traditional control system all is difficult to satisfy the requirement of modern power circuit on control precision still is control rate.Along with the fast development of digital Control Technology and power industry require more and more highlyer to the quality of power supply, the requirement of control system is also improved constantly, traditional control system has been difficult to satisfy the requirement of modern industry to control performance.
(3) summary of the invention
The object of the present invention is to provide a kind of five-level active power filter control system based on DSP, it is in conjunction with high performance digital signal processor DSP and CPLD (Complex Programmable Logic Device, CPLD), and the Fiber Optical Communication System that adopts the advanced person, can overcome the shortcoming of above-mentioned traditional control system preferably, be a kind ofly programme conveniently, speed is fast, antijamming capability is strong, precision is high control system.
Detailed technology scheme of the present invention: a kind of five-level active power filter control system based on DSP is characterized in that it is made up of control panel, central data treatment circuit, photoelectric switching circuit, Fiber Optical Communication System and drive circuit, five level power circuit and current sampling circuit.Wherein, said central data treatment circuit comprises two circuit units of DSP and CPLD; Said control panel is two-way the connection with DSP; Be two-way the connection between said DSP circuit unit and the CPLD circuit unit; The output of said CPLD circuit unit is connected with the input of photoelectric switching circuit; The output of said photoelectric switching circuit is connected with the input of Fiber Optical Communication System and drive circuit; The output of said Fiber Optical Communication System and drive circuit is connected with the input of five level power circuit; The output of said five level power circuit is connected with the input of electric power system; The input of said current sampling circuit is connected with the output of electric power system, and its output is connected with the input of DSP circuit unit.
Above-mentioned said central data treatment circuit by power-supply system, crystal oscillating circuit, DSP circuit unit, open into/leave control circuit, man-machine interface-control panel, netting twine and CPLD extended chip to form; Wherein, said power-supply system is the power-supply system that power supply is provided for each module of central data treatment circuit; The output of said crystal oscillating circuit is connected with the output pin of DSP circuit unit; Said open into/leave control circuit to constitute by sister's circuit of central data treatment circuit, and be two-way with the central data treatment circuit and be connected; Man-machine interface-control panel is two-way according to netting twine with the DSP circuit unit and is connected; Said CPLD extended chip is two-way with the DSP circuit unit and is connected.
Above-mentioned said DSP is TMS320F28335 floating type DSP.
Above-mentioned said Fiber Optical Communication System and drive circuit mainly comprise the photoelectric conversion unit of communication optical fiber, drive circuit and drive circuit side; The input of the photoelectric conversion unit of said drive circuit side receives the control impuls of being sent by the CPLD extended chip according to communication optical fiber, and its output is connected with the input of drive circuit; Said drive circuit is exported to five level power circuit with the driving pulse of output; Said communication optical fiber contains No. 24 drive circuit optical fiber and 6 tunnel feedback signal Transmission Fibers; Wherein No. 24 drive circuit optical fiber are to be used for 24 tunnel control impuls of CPLD extended chip output are exported to the communication optical fiber of drive circuit, and said 6 tunnel feedback signal Transmission Fibers are the Transmission Fibers that the operating state of drive circuit fed back to CPLD.
Above-mentioned said drive circuit sidelight electricity converting unit comprises that filter capacitor CO1, signal receive optical fiber head OP2521, pull-up resistor RD1, diode D2, discharge resistance R5, capacitor C 4, capacitor C 5, these schmitt trigger 40106 chips; Wherein, said filter capacitor CO1 connects the pin that signal receives optical fiber head OP2521; Said pull-up resistor RD1 is connected with the pin that signal receives optical fiber head OP2521; String receives between optical fiber head OP2521 and this schmitt trigger 40106 chips at signal after said diode D2 and the discharge resistance R5 parallel connection; Said capacitor C 4, capacitor C 5 are connected with these schmitt trigger 40106 pin of chip respectively.
Above-mentioned said drive circuit is made up of the drive circuit that comprises the 2SD315A chip for driving; Wherein the input of chip for driving receives the output signal of these schmitt trigger 40106 chips; The output of said chip for driving is connected with the input of five level power unit.
Above-mentioned said five level power circuit comprise: single-phase 8 the IGBT person in charge, filter inductance L that contain fly-wheel diode
fThe IGBT that 8 of said every phases contain fly-wheel diode is responsible for to be and is connected in series, and the one end is connected to the filter inductance end, and the other end connects together; Said every single-phase 8 IGBT are responsible for and filter inductance L
fConnect, and be connected in series in the electric power system.
Superiority of the present invention and technique effect are: 1, utilize high performance float-point type digital signal processing chip to realize the control of five-level active power filter, improve the speed and the precision of control to a great extent, improved traditional fixed point type dsp program complicated problems, made The whole control system have good adjusting function and reliability; 2, adopt the DSP+CPLD forming control system, hardware circuit is simple, the output trigger impulse is safe and reliable, precision of real time control is high, can be bigger the stability and the reliability of raising system; 3, adopt Fiber Optical Communication System, it is weak to have improved the signal that the traditional analog signal transmission form causes, the problem of poor anti jamming capability; 4, adopt the main circuit topological structure of five electrical level power module circuit, can improve power system capacity and bucking voltage, improve the harmonic characterisitic of output voltage as APF; 4, adopt the flip chip of 2SD315A chip for driving, have the defencive function that driving force is strong, control is convenient and have overvoltage, overcurrent as driving pulse; 5, has wide market application prospect.
(4) description of drawings:
Accompanying drawing 1 is the overall structure schematic diagram of the related a kind of five-level active power filter control system based on DSP of the present invention.
Accompanying drawing 2 is related a kind of based on the central data treatment circuit structural representation in the five-level active power filter control system of DSP for the present invention.
Accompanying drawing 3 is related a kind of based on optical-fibre communications circuit in the five-level active power filter control system of DSP and power driving circuit structural representation for the present invention.
Wherein, Fig. 3-A is the circuit structure diagram of the photoelectric conversion unit of drive circuit side; Fig. 3-B is the structured flowchart of drive circuit.
Accompanying drawing 4 is related a kind of based on the five-level active power filter circuit system in the five-level active power filter control system of DSP for the present invention.
(5) embodiment:
Embodiment: a kind of five-level active power filter control system (see figure 1) based on DSP, comprise the electric power system that contains current transformer, it is characterized in that it is made up of control panel, central data treatment circuit, photoelectric switching circuit, Fiber Optical Communication System and drive circuit, three level power circuit and voltage sampling circuit; Wherein, said central data treatment circuit comprises two circuit units of DSP and CPLD; Said control panel is two-way the connection with DSP; Be two-way the connection between said DSP circuit unit and the CPLD circuit unit; The output of said CPLD circuit unit is connected with the input of photoelectric switching circuit; The output of said photoelectric switching circuit is connected with the input of Fiber Optical Communication System and drive circuit; The output of said Fiber Optical Communication System and drive circuit is connected with the input of five level power circuit; The output of said five level power circuit is connected with the input of electric power system; The input of said current sampling circuit is connected with the output of electric power system, and its output is connected with the input of DSP circuit unit.
Above-mentioned said central data treatment circuit (see figure 2) by power-supply system, crystal oscillating circuit, TMS320F28335 floating type DSP circuit unit, open into/leave control circuit, man-machine interface-control panel, netting twine and CPLD extended chip to form; Wherein, said power-supply system is the power-supply system that power supply is provided for each module of central data treatment circuit; The output of said crystal oscillating circuit is connected with the output pin of DSP circuit unit; Said open into/leave control circuit to constitute by sister's circuit of central data treatment circuit, and be two-way with the central data treatment circuit and be connected; Man-machine interface-control panel is two-way according to netting twine with the DSP circuit unit and is connected; Said CPLD extended chip is two-way with the DSP circuit unit and is connected.
Above-mentioned said Fiber Optical Communication System and drive circuit (see figure 3) mainly comprise the photoelectric conversion unit of communication optical fiber, drive circuit and drive circuit side; The input of the photoelectric conversion unit of said drive circuit side receives the control impuls of being sent by the CPLD extended chip according to communication optical fiber, and its output is connected with the input of drive circuit; Said drive circuit is exported to five level power circuit with the driving pulse of output; Said communication optical fiber contains No. 24 drive circuit optical fiber and 6 tunnel feedback signal Transmission Fibers; Wherein No. 24 drive circuit optical fiber are to be used for 24 tunnel control impuls of CPLD extended chip output are exported to the communication optical fiber of drive circuit, and said 6 tunnel feedback signal Transmission Fibers are the Transmission Fibers that the operating state of drive circuit fed back to CPLD.
Above-mentioned said drive circuit sidelight electricity converting unit (is seen Fig. 3-A) comprise that filter capacitor CO1, signal receive optical fiber head OP2521, pull-up resistor RD1, diode D2, discharge resistance R5, capacitor C 4, capacitor C 5, these schmitt trigger 40106 chips; Wherein, said filter capacitor CO1 connects the pin that signal receives optical fiber head OP2521; Said pull-up resistor RD1 is connected with the pin that signal receives optical fiber head OP2521; String receives between optical fiber head OP2521 and this schmitt trigger 40106 chips at signal after said diode D2 and the discharge resistance R5 parallel connection; Said capacitor C 4, capacitor C 5 are connected with these schmitt trigger 40106 pin of chip respectively.
Above-mentioned said drive circuit (is seen Fig. 3-B) be made up of the drive circuit that comprises the 2SD315A chip for driving; Wherein the input of chip for driving receives the output signal of these schmitt trigger 40106 chips; The output of said chip for driving is connected with the input of five level power unit.
Above-mentioned said five level power circuit (see figure 4)s comprise: single-phase 8 the IGBT person in charge, filter inductance L that contain fly-wheel diode
fThe IGBT that 8 of said every phases contain fly-wheel diode is responsible for to be and is connected in series, and the one end is connected to the filter inductance end, and the other end connects together; Said every single-phase 8 IGBT are responsible for and filter inductance L
fConnect, and be connected in series in the electric power system.
Claims (7)
1. five-level active power filter control system based on DSP is characterized in that it is made up of control panel, central data treatment circuit, photoelectric switching circuit, Fiber Optical Communication System and drive circuit, five level power circuit and current sampling circuit.Wherein, said central data treatment circuit comprises two circuit units of DSP and CPLD; Said control panel is two-way the connection with DSP; Be two-way the connection between said DSP circuit unit and the CPLD circuit unit; The output of said CPLD circuit unit is connected with the input of photoelectric switching circuit; The output of said photoelectric switching circuit is connected with the input of Fiber Optical Communication System and drive circuit; The output of said Fiber Optical Communication System and drive circuit is connected with the input of five level power circuit; The output of said five level power circuit is connected with the input of electric power system; The input of said current sampling circuit is connected with the output of electric power system, and its output is connected with the input of DSP circuit unit.
2. according to said a kind of five-level active power filter control system in the claim 1 based on DSP, it is characterized in that said central data treatment circuit by power-supply system, crystal oscillating circuit, DSP circuit unit, open into/leave control circuit, man-machine interface-control panel, netting twine and CPLD extended chip to form; Wherein, said power-supply system is the power-supply system that power supply is provided for each module of central data treatment circuit; The output of said crystal oscillating circuit is connected with the output pin of DSP circuit unit; Said open into/leave control circuit to constitute by sister's circuit of central data treatment circuit, and be two-way with the central data treatment circuit and be connected; Man-machine interface-control panel is two-way according to netting twine with the DSP circuit unit and is connected; Said CPLD extended chip is two-way with the DSP circuit unit and is connected.
3. according to said a kind of five-level active power filter control system in the claim 1, it is characterized in that said DSP is TMS320F28335 floating type DSP based on DSP.
4. according to said a kind of five-level active power filter control system in the claim 1, it is characterized in that said Fiber Optical Communication System and drive circuit mainly comprise the photoelectric conversion unit of communication optical fiber, drive circuit and drive circuit side based on DSP; The input of the photoelectric conversion unit of said drive circuit side receives the control impuls of being sent by the CPLD extended chip according to communication optical fiber, and its output is connected with the input of drive circuit; Said drive circuit is exported to five level power circuit with the driving pulse of output; Said communication optical fiber contains No. 24 drive circuit optical fiber and 6 tunnel feedback signal Transmission Fibers; Wherein No. 24 drive circuit optical fiber are to be used for 24 tunnel control impuls of CPLD extended chip output are exported to the communication optical fiber of drive circuit, and said 6 tunnel feedback signal Transmission Fibers are the Transmission Fibers that the operating state of drive circuit fed back to CPLD.
5. according to said a kind of five-level active power filter control system in the claim 1, it is characterized in that said drive circuit sidelight electricity converting unit comprises that filter capacitor CO1, signal receive optical fiber head OP2521, pull-up resistor RD1, diode D2, discharge resistance R5, capacitor C 4, capacitor C 5, these schmitt trigger 40106 chips based on DSP; Wherein, said filter capacitor CO1 connects the pin that signal receives optical fiber head OP2521; Said pull-up resistor RD1 is connected with the pin that signal receives optical fiber head OP2521; String receives between optical fiber head OP2521 and this schmitt trigger 40106 chips at signal after said diode D2 and the discharge resistance R5 parallel connection; Said capacitor C 4, capacitor C 5 are connected with these schmitt trigger 40106 pin of chip respectively.
6. according to said a kind of five-level active power filter control system in the claim 1, it is characterized in that said drive circuit is made up of the drive circuit that comprises the 2SD315A chip for driving based on DSP; Wherein the input of chip for driving receives the output signal of these schmitt trigger 40106 chips; The output of said chip for driving is connected with the input of five level power unit.
7. according to said a kind of five-level active power filter control system in the claim 1, it is characterized in that said five level power circuit comprise: single-phase 8 the IGBT person in charge, filter inductance L that contain fly-wheel diode based on DSP
fThe IGBT that 8 of said every phases contain fly-wheel diode is responsible for to be and is connected in series, and the one end is connected to the filter inductance end, and the other end connects together; Said every single-phase 8 IGBT are responsible for and filter inductance L
fConnect, and be connected in series in the electric power system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910228953A CN101710705A (en) | 2009-12-03 | 2009-12-03 | Five-level active power filter control system based on DSP |
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| CN200910228953A CN101710705A (en) | 2009-12-03 | 2009-12-03 | Five-level active power filter control system based on DSP |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801141A (en) * | 2012-07-26 | 2012-11-28 | 太原理工大学 | Parallel-connection settable hardware protection device for active power filter (APF) |
| CN102830268A (en) * | 2012-08-31 | 2012-12-19 | 天津理工大学 | DSP (Digital Signal Processor) and SAPF (Shunt Active Power Filter)-based real-time phase shift detection system and working method thereof |
| CN103427418A (en) * | 2013-08-16 | 2013-12-04 | 廊坊英博电气有限公司 | Slave controller based on active module in active hybrid filter device |
| CN108054756A (en) * | 2017-12-21 | 2018-05-18 | 国网江苏省电力公司泰州供电公司 | A kind of topological structure for distribution network planning |
-
2009
- 2009-12-03 CN CN200910228953A patent/CN101710705A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801141A (en) * | 2012-07-26 | 2012-11-28 | 太原理工大学 | Parallel-connection settable hardware protection device for active power filter (APF) |
| CN102830268A (en) * | 2012-08-31 | 2012-12-19 | 天津理工大学 | DSP (Digital Signal Processor) and SAPF (Shunt Active Power Filter)-based real-time phase shift detection system and working method thereof |
| CN102830268B (en) * | 2012-08-31 | 2015-08-05 | 天津理工大学 | The real-time phase shift detection system of a kind of SAPF based on DSP and method of work thereof |
| CN103427418A (en) * | 2013-08-16 | 2013-12-04 | 廊坊英博电气有限公司 | Slave controller based on active module in active hybrid filter device |
| CN103427418B (en) * | 2013-08-16 | 2015-07-08 | 廊坊英博电气有限公司 | Slave controller based on active module in active hybrid filter device |
| CN108054756A (en) * | 2017-12-21 | 2018-05-18 | 国网江苏省电力公司泰州供电公司 | A kind of topological structure for distribution network planning |
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Open date: 20100519 |