CN103117550A - Controller based on TMS320F2812 power distribution synchronous compensator - Google Patents
Controller based on TMS320F2812 power distribution synchronous compensator Download PDFInfo
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- CN103117550A CN103117550A CN2013100737808A CN201310073780A CN103117550A CN 103117550 A CN103117550 A CN 103117550A CN 2013100737808 A CN2013100737808 A CN 2013100737808A CN 201310073780 A CN201310073780 A CN 201310073780A CN 103117550 A CN103117550 A CN 103117550A
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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
- Y02E40/30—Reactive power compensation
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Abstract
The invention discloses a controller based on a TMS320F2812 power distribution synchronous compensator. The controller comprises a signal conditioning circuit, a protection circuit, a periphery device and a control main board, the signal conditioning circuit is connected to an analog to digital converter (ADC) module, the protection circuit and the periphery device are connected to the control main board, and the control main board is a control core TMS320F2812 digital signal processor (DSP) board. By means of the way, the controller is fast in calculation speed, high in accuracy, and capable of real-timely, accurately, continuously and rapidly compensating reactive power, effectively inhibiting voltage fluctuation of a system, and improving power qualities of a power distribution network to a large extent.
Description
Technical field
The present invention relates to a kind of controller, particularly relate to a kind of controller of the distribution synchronous compensator based on TMS320F2812.
Background technology
Controller is one of core component of distribution synchronous compensator (DSTATCOM) device, and it controls the various actions of DSTATCOM by the pulse that produces and control the driving switch device, complete the control task of DSTATCOM.Design good controller, selecting suitable control strategy is the deciding factor of DSTATCOM compensation effect quality.Because DSTATCOM controlling unit amount of calculation is large, flow process is complicated, required precision is high, traditional with single-chip microcomputer as the controller of control core due to the restriction that is subjected to hardware resource and speed, sampling precision is not high, and the sampled point of every cycle is few, can only select the little algorithm of amount of calculation, result has limited the precision of measuring, and can't realize the real-time dynamic passive compensation to electrical network.Given this plant situation, in order to solve problems of the prior art, our specialized designs a kind of DSTATCOM controller based on TMS320F2812, it has fast operation, precision advantages of higher, can be in real time, accurately, compensate idle rapidly continuously, effectively suppress the system voltage fluctuation, improved to a great extent the quality of power supply of power distribution network, wide market prospects are arranged.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of controller of the distribution synchronous compensator based on TMS320F2812, can satisfy the requirements such as the real-time of DSTATCOM, multi-functional and multi-objective coordinated control, Processing Algorithm complexity fully, have simultaneously that circuit is simple, real-time good, a perfect in shape and function, the characteristics such as reliability is high and antijamming capability is strong.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the controller that a kind of distribution synchronous compensator based on TMS320F2812 is provided, this controller based on the distribution synchronous compensator of TMS320F2812 comprises signal conditioning circuit, protective circuit, peripheral unit and control mainboard, described signal conditioning circuit is connected to the ADC module of controlling mainboard, described protective circuit, peripheral unit all are connected to the control mainboard, and described control mainboard is control core TMS320F2812 dsp board;
Preferably, described peripheral unit comprises drive circuit, synchronous signal generating circuit, LED display module and CAN communication module, described LED display module and CAN communication module are directly connected to the TMS320F2812 dsp board, described drive circuit is connected to the PWM module of TMS320F2812 dsp board, and described synchronous signal generating circuit is connected to TMS320F2812 dsp board CAP module;
Preferably, described signal conditioning circuit is provided with offset current input port, load current input port, direct voltage input port, bucking voltage input port and system voltage input port, and the system voltage input port is also connected to synchronous signal generating circuit;
Preferably, described protective circuit is provided with failure alarm signal delivery outlet, fault locking signal delivery outlet and overtemperature prote input port.
The invention has the beneficial effects as follows: the controller of a kind of distribution synchronous compensator based on TMS320F2812 of the present invention, its fast operation, precision are high, can be in real time, accurately, compensate idle rapidly continuously, effectively suppress the system voltage fluctuation, improved to a great extent the quality of power supply of power distribution network.
Description of drawings
Fig. 1 is the structural representation of the controller of a kind of distribution synchronous compensator based on TMS320F2812 of the present invention;
Fig. 2 is the functional flow diagram of the controller of a kind of distribution synchronous compensator based on TMS320F2812 of the present invention;
Fig. 3 is 3 of signal conditioning circuit figure of controller of a kind of distribution synchronous compensator based on TMS320F2812 of the present invention figure along separate routes.
Fig. 4 is the synchronous signal generating circuit figure of the controller of a kind of distribution synchronous compensator based on TMS320F2812 of the present invention;
Fig. 5 is the protective circuit figure of the controller of a kind of distribution synchronous compensator based on TMS320F2812 of the present invention.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, thereby so that the advantage of invention and feature can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made more explicit defining.
See also Fig. 1 to Fig. 5, the embodiment of the present invention comprises:
A kind of controller of the distribution synchronous compensator based on TMS320F2812, this controller based on the distribution synchronous compensator of TMS320F2812 comprises signal conditioning circuit 1, protective circuit 2, peripheral unit 3 and controls mainboard 4, described signal conditioning circuit 1 is connected to the ADC module of controlling mainboard 4, described protective circuit 2, peripheral unit 3 all are connected to controls mainboard 4, and described control mainboard 4 is control core TMS320F2812 dsp board;
Described peripheral unit 3 comprises drive circuit 31, synchronous signal generating circuit 32, LED display module 33 and CAN communication module 34, described LED display module 33 and CAN communication module 34 are directly connected to the TMS320F2812 dsp board, described drive circuit 31 is connected to the PWM module of TMS320F2812 dsp board, and described synchronous signal generating circuit 32 is connected to TMS320F2812 dsp board CAP module;
Described signal conditioning circuit 1 is provided with offset current input port 11, load current input port 12, direct voltage input port 13, bucking voltage input port 14 and system voltage input port 15, and system voltage input port 15 is also connected to synchronous signal generating circuit 32;
Described protective circuit 2 is provided with failure alarm signal delivery outlet 21, fault locking signal delivery outlet 22 and overtemperature prote input port 23.
When the present invention works, signal conditioning circuit is passed to the control mainboard after required voltage and current signal is processed, controlling on mainboard, control core TMS320F2812 DSP obtains corresponding reactive current value with required voltage and current signal through after the ip-iq detection method computing based on Instantaneous Power Theory, provide the compensating signal of requirement by control algolithm, compensating signal produces the SVPWM control signal by the inner PWM module of TMS320F2812 again and delivers to drive circuit, finally produces corresponding offset current by power electronic device and injects electrical network.Simultaneously TMS320F2812 DSP be responsible for that data show and with the task such as upper machine communication; when DSTATCOM operates under overvoltage, overcurrent, overtemperature or some other deviant circumstance; protective circuit can be exported a fault-signal; controller sends locking pulse and blocks IGBT; DSTATCOM is quit work, prevent danger.
As shown in Figure 2, abundant peripheral hardware resource is arranged on the TMS320F2812 sheet, mainly contain analog-to-digital conversion module (ADC), task manager module (EV), Serial Peripheral Interface (SPI) module (SPI), serial communication interface module (SCI), CAN controller module (eCAN) etc.Wherein, the ADC module of Embedded has following characteristics: 12 AD of built-in band sampling/retainer; 16 road analog input channels; Single channel ns change-over times 80; A plurality of trigger sources start AD.Task manager (EV) is divided into EVA and two modules of EVB, and each module comprises 2 general purpose timers, 3 comparing units, 3 capturing units and quadrate encode module.Wherein, this controller utilizes the ADC module of TMS320F2812 Embedded that the required voltage signals such as system voltage, direct voltage, bucking voltage, load current and offset current and current signal are gathered.Owing to having 13 analog inputs, therefore SEQ1 and SEQ2 cascade are got up to work, use 13 analog input channels wherein.The trigger source that the external signal that setting comes from pin ADCSOC is changed as A/D, and it is effective to be set to trailing edge, synchronous signal generating circuit is completed A phase system voltage
Filtering and Shape correction, and produce the rectangular pulse of system for tracking change in voltage by zero cross detection circuit, when A phase system voltage
During through the negative sense zero crossing, synchronous signal generating circuit produces a trailing edge, thereby triggers A/D conversion beginning.
As shown in Figure 3, when signal conditioning circuit is sampled to 13 required signal input quantity, select the transducer of three types, Alternative Voltage Converter with the alternating voltage of 0～5V as output signal, Hall current sensor with-100mA～+ alternating current of 100mA is as output signal, the Hall voltage transducer with the dc current signal of 0～60mA as output signal.The AD input reference signal of TMS320F2812 is 0～3V, requirement for the AD that satisfies TMS320F2812 inputs comprises that the alternating voltage modulate circuit as shown in Fig. 3 (a), is comprised of three parts, first is emitter follower, to improve the input impedance of circuit; Second portion is voltage offset circuits, and third part is the clamp amplitude limiter circuit, to guarantee that output voltage signal between 0～3V, satisfies the AD input reference signal of TMS320F2812.The alternating current modulate circuit is as shown in Fig. 3 (b), and different from the alternating voltage modulate circuit is, first is the accurate sampling resistor R9 that flows through after capacitor C 4 filtering, and current signal is transformed to voltage signal, and second portion is the inverter that is made of amplifier.Other parts and alternating voltage modulate circuit are basic identical.The d. c. voltage signal modulate circuit is as shown in Fig. 3 (c).
As shown in Figure 4, synchronous signal generating circuit is comprised of 3 parts, and first has adopted the A phase system voltage signal of low-pass filter circuit to input
Carry out filtering, prevent synchronizing voltage
In be mingled with the interference signal of high frequency; Second portion is emitter follower, to improve the input impedance of circuit; Third part is high-speed comparator LM311, and the zero crossing that can complete synchronizing voltage by it detects.
As shown in Figure 5; protective circuit mainly contains overcurrent protection, overvoltage protection, overtemperature protection; electric current and voltage are monitored by Hall element; when overcurrent or overvoltage phenomenon occur when, block immediately IGBT and drive signal, close main circuit; adopt in addition temperature relay to detect the skin temperature of IGBT; when skin temperature surpasses 85 ℃, think generation overheating fault, locking pulse signal immediately.
The controller of a kind of distribution synchronous compensator based on TMS320F2812 of the present invention, can satisfy the requirements such as the real-time of DSTATCOM, multi-functional and multi-objective coordinated control, Processing Algorithm complexity fully, have simultaneously that circuit is simple, real-time good, a perfect in shape and function, the characteristics such as reliability is high and antijamming capability is strong; Its fast operation, precision are high, can be in real time, accurately, compensate idle rapidly continuously, effectively suppress the system voltage fluctuation, and improved to a great extent the quality of power supply of power distribution network.
The above is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present invention.
Claims (4)
1. controller based on the distribution synchronous compensator of TMS320F2812; it is characterized in that: this controller based on the distribution synchronous compensator of TMS320F2812 comprises signal conditioning circuit, protective circuit, peripheral unit and control mainboard; described signal conditioning circuit is connected to the ADC module of controlling mainboard; described protective circuit, peripheral unit all are connected to the control mainboard, and described control mainboard is control core TMS320F2812 dsp board.
2. the controller of a kind of distribution synchronous compensator based on TMS320F2812 according to claim 1, it is characterized in that: described peripheral unit comprises drive circuit, synchronous signal generating circuit, LED display module and CAN communication module, described LED display module and CAN communication module are directly connected to the TMS320F2812 dsp board, described drive circuit is connected to the PWM module of TMS320F2812 dsp board, and described synchronous signal generating circuit is connected to TMS320F2812 dsp board CAP module.
3. the controller of a kind of distribution synchronous compensator based on TMS320F2812 according to claim 1, it is characterized in that: described signal conditioning circuit is provided with offset current input port, load current input port, direct voltage input port, bucking voltage input port and system voltage input port, and the system voltage input port is also connected to synchronous signal generating circuit.
4. the controller of a kind of distribution synchronous compensator based on TMS320F2812 according to claim 1 is characterized in that: described protective circuit is provided with failure alarm signal delivery outlet, fault locking signal delivery outlet and overtemperature prote input port.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100737808A CN103117550A (en) | 2013-03-08 | 2013-03-08 | Controller based on TMS320F2812 power distribution synchronous compensator |
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| CN2013100737808A CN103117550A (en) | 2013-03-08 | 2013-03-08 | Controller based on TMS320F2812 power distribution synchronous compensator |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040052015A1 (en) * | 2000-11-30 | 2004-03-18 | Lennart Angquist | Device and a method for voltage control in an electric transmission network |
| CN103094914A (en) * | 2013-02-03 | 2013-05-08 | 苏州市职业大学 | Controller based on TMS320F2812 power distribution synchronous compensator |
| CN203151102U (en) * | 2013-02-03 | 2013-08-21 | 苏州市职业大学 | TMS320F2812-based controller of power distribution synchronous compensator |
| CN203205879U (en) * | 2013-03-08 | 2013-09-18 | 苏州市职业大学 | A distribution static synchronous compensator (DSTATCOM) controller based on a DSP TMS320F2812 |
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2013
- 2013-03-08 CN CN2013100737808A patent/CN103117550A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040052015A1 (en) * | 2000-11-30 | 2004-03-18 | Lennart Angquist | Device and a method for voltage control in an electric transmission network |
| CN103094914A (en) * | 2013-02-03 | 2013-05-08 | 苏州市职业大学 | Controller based on TMS320F2812 power distribution synchronous compensator |
| CN203151102U (en) * | 2013-02-03 | 2013-08-21 | 苏州市职业大学 | TMS320F2812-based controller of power distribution synchronous compensator |
| CN203205879U (en) * | 2013-03-08 | 2013-09-18 | 苏州市职业大学 | A distribution static synchronous compensator (DSTATCOM) controller based on a DSP TMS320F2812 |
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Application publication date: 20130522 |