CN102969897A - Digital large-power high-frequency inversion controller for direct-current power supply and method of controller - Google Patents
Digital large-power high-frequency inversion controller for direct-current power supply and method of controller Download PDFInfo
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- CN102969897A CN102969897A CN2011102628295A CN201110262829A CN102969897A CN 102969897 A CN102969897 A CN 102969897A CN 2011102628295 A CN2011102628295 A CN 2011102628295A CN 201110262829 A CN201110262829 A CN 201110262829A CN 102969897 A CN102969897 A CN 102969897A
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Abstract
The invention discloses a digital large-power high-frequency inversion controller for a direct-current power supply and a method of the controller. The controller comprises a current measurement circuit, a voltage measurement circuit, a power given circuit, an over-current protection circuit, an overheating protection circuit, a phase loss protection circuit, a keyboard circuit, a micro-processor, a displayer, a complex programmable logic device (CPLD), a first drive circuit, a second drive circuit, a third drive circuit, a fourth drive circuit, a fifth drive circuit, a sixth drive circuit, a digital/analog (D/A)conversion circuit, a switching signal output circuit and a power supply circuit. According to the digital large-power high-frequency inversion controller for the direct-current power supply and the method of the controller, an electronic design automation (EDA) technique is used to be combined with the micro-processer control and the CPLD, and the micro-processor is used to control the CPLD to produce square-wave signals with adjustable duty ratios and frequencies, so that the power supply output power changes according to requirements, and the output power level is controlled by the micro-processor control, accordingly, a low-voltage, large-current and direct-current power supply is obtained through rectification. Output energy of the power supply can supply heat for a mono-crystal furnace graphite heater, the temperature control accuracy is high, and strict temperature requirements of mono-crystals in growth stages can be met.
Description
Technical field
The present invention relates to a kind ofly can produce low-voltage and high-current, and output voltage or electric current all adjustable high-power high-frequency inversion rectifying device and method thereof, be to electroplate, oxidation, electrolysis, electrophoresis, smelt, the electrochemical treatments such as quartz heating and refinement monocrystalline silicon provide the DC power supply of efficient stable.
Background technology
Along with the develop rapidly of electron trade, more begin to strengthen demand to monocrystalline silicon mainly with electronic technology for the field that relies on.Therefore as the capital equipment that thermal source is provided in the single crystal growth process-high-power monocrystalline silicon DC heating power supply, also obtained using more widely, but also the real-time of monocrystalline silicon heating power supply, intelligent and reliability have been had higher requirement simultaneously.Traditional high-power monocrystalline silicon DC heating power supply mainly adopts transformer and controllable silicon step-down, and then by rectification acquisition low-voltage high-current power source, there are the problems such as efficient is low, power factor is low, output voltage ripple is large, less stable in traditional thyristor supply.The present invention proposes digital large power high-frequency inversion DC power control device and method adopts the EDA technology, in conjunction with little processing controls and CPLD, utilize little processing controls CPLD to produce duty ratio, the square-wave signal that frequency is adjustable is controlled IGBT, output power of power supply is changed as requested, the size of power output is controlled by little processing controls, and obtained the low-voltage and high-current DC power supply by rectification, improved energy conversion efficiency, and power supply has high power factor and higher efficient, the power source integral energy-saving effect is obvious, the energy of its output can directly be the graphite heater heat supply in the single crystal growing furnace, temperature-controlled precision is high, can satisfy monocrystalline in the strict demand of growth phase to temperature.
Summary of the invention
How technical problem to be solved by this invention utilizes the EDA technology, improves energy conversion efficiency, is the heat supply of single crystal growing furnace graphite heater.
For solving the problems of the technologies described above, the invention provides a kind of digital large power high-frequency inversion DC power control device and method thereof, comprise current measurement circuit, tension measuring circuit, power given circuit, current foldback circuit, overheating protection circuit, open-phase protection, keyboard circuit, microprocessor, demonstration, CPLD, the first drive circuit, the second drive circuit, the 3rd drive circuit, the moving circuit of 4 wheel driven, the 5th drive circuit, the 6th drive circuit, D/A change-over circuit, switching signal output circuit and power circuit; Current measurement circuit, tension measuring circuit and power given circuit are connected output and are connected with the A/D mouth of microprocessor respectively; Current foldback circuit, overheating protection circuit and open-phase protection are connected output and are connected with the I/O mouth of microprocessor respectively; The output of keyboard circuit is connected with the I/O mouth of microprocessor; Show that input is connected with the I/O mouth of microprocessor; The input of switching signal output circuit is connected with the I/O mouth of microprocessor; The CPLD input is connected with the I/O mouth of microprocessor; The first drive circuit (11), the second drive circuit, the 3rd drive circuit, the moving circuit of 4 wheel driven, the 5th drive circuit are connected with the output of CPLD respectively with the 6th drive circuit; The D/A change-over circuit is connected with the I/O mouth of microprocessor; The voltage output end of power circuit is connected with the power end of microprocessor.
The moving circuit of the first drive circuit, the second drive circuit, the 3rd drive circuit, 4 wheel driven, the 5th drive circuit and the 6th drive circuit are the H bridge circuit, and output is controlled respectively the IGBT in the main circuit separately.
Current collection circuit utilizes the total output current signal of Hall current sensor collection, and the output signal of current collection circuit 1 is 0-10VDC.
Tension measuring circuit utilizes the total output voltage of divider resistance collection at dc output end.
The object of the invention to solve the technical problems also adopts following technical scheme to realize.The method of a kind of digital large power high-frequency inversion DC power control device that proposes according to the present invention comprises and carries out following steps:
A, digital large power high-frequency inversion DC power control device at first carry out initialization to the program of microprocessor before single crystal growing furnace is heated;
B, live through the A step after, carry out Load-aware, when certain road during non-loaded or load short circuits, the output signal that should in time turn-off this road CPLD;
C, by microprocessor the control of permanent power is carried out in load; to single crystal growing furnace load heat; when if bearing power changes; duty by control CPLD output signal is regulation output power recently; control method adopts PID to regulate; microprocessor not only will be finished the collection of voltage, electric current and power signal, also will finish collection and the protection output control of overcurrent, the signal such as overheated.
CPLD exports 6 groups of independently frequency adjustable (7-12KHZ), the adjustable square-wave signals of duty ratio (0-45%) simultaneously.
By technique scheme, the present invention has positive effect: in (1) digital large power high-frequency inversion of the present invention DC power control device, CPLD is mainly used in controlling the generation of IGBT triggering signal, microprocessor is mainly finished voltage, the collection of the analog signal such as electric current and power, and finish simultaneously overcurrent, overheated collection and the output control that waits signal, CPLD can export 6 groups of independently frequencies adjustable (7-12KHZ), the adjustable square-wave signal of duty ratio (0-45%), 6 groups of signals are identical, and can control separately, be convenient to when the main circuit fault of a certain road, can in time turn-off this road signal.(2) digital large power high-frequency inversion DC power control device of the present invention, duty ratio is adjusted automatically according to given watt level, power given adopts 0-10VDC voltage, convert the 0-5V voltage signal to, power feedback signal adopts the 0-10VDC voltage signal, the power adjustment adopts PID to regulate, accurately the control load heating power.(3) digital large power high-frequency inversion DC power control device of the present invention owing to adopt full digital control, makes power stage control more simple, and reliability is high.
In sum, digital large power high-frequency inversion DC power control device and the method thereof of special construction of the present invention have the control precision height, control simple, reliable and the low advantage of cost.It has above-mentioned many advantages and practical value, and in like product, publish or use and really genus innovation there are no similar structural design, no matter it structurally or larger improvement all arranged on the function, have large improvement technically, and produced handy and practical effect, and more existing high-frequency inversion DC power control utensil has the multinomial effect of enhancement, thus more be suitable for practicality, and have the extensive value of industry, really be a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, below with preferred embodiment of the present invention and cooperate accompanying drawing to be described in detail as follows.
Description of drawings
Fig. 1 is the digital large power high-frequency inversion DC power control device theory diagram of embodiment 1.
Embodiment
As shown in Figure 1, digital large power high-frequency inversion DC power control device and the method thereof of present embodiment comprise current measurement circuit 1, tension measuring circuit 2, power given circuit 3, current foldback circuit 4, overheating protection circuit 5, open-phase protection 6, keyboard circuit 7, microprocessor 8, demonstration 9, CPLD10, the first drive circuit 11, the second drive circuit 12, the 3rd drive circuit 13, the moving circuit 14 of 4 wheel driven, the 5th drive circuit 15, the 6th drive circuit 16, D/A change-over circuit 17, switching signal output circuit 18 and power circuit 19; The output that current measurement circuit 1, tension measuring circuit 2 and power given circuit are connected is connected with the A/D mouth of microprocessor 8 respectively; The output that current foldback circuit 4, overheating protection circuit 5 are connected with open-phase protection is connected with the I/O mouth of microprocessor 8 respectively; The output of keyboard circuit 7 is connected with the I/O mouth of microprocessor 8; Show that 9 inputs are connected with the I/O mouth of microprocessor 8; The input of switching signal output circuit 18 is connected with the I/O mouth of microprocessor 8; The CPLD10 input is connected with the I/O mouth of microprocessor 8; The first drive circuit 11, the second drive circuit 12, the 3rd drive circuit 13, the moving circuit 14 of 4 wheel driven, the 5th drive circuit 15 are connected with the output of CPLD10 respectively with the 6th drive circuit 16; D/A change-over circuit 17 is connected with the I/O mouth of microprocessor 8; The voltage output end of power circuit 19 is connected with the power end of microprocessor 8.
The moving circuit 14 of the first drive circuit 11, the second drive circuit 12, the 3rd drive circuit 13,4 wheel driven, the 5th drive circuit 15 and the 6th drive circuit 16 are the H bridge circuit, and output is controlled respectively the IGBT in the main circuit separately.
Current collection circuit 1 utilizes the total output current signal of Hall current sensor collection, and the output signal of current collection circuit 1 is 0-10VDC.
Tension measuring circuit 2 utilizes the total output voltage of divider resistance collection at dc output end.
The object of the invention to solve the technical problems also adopts following technical scheme to realize.The method of a kind of digital large power high-frequency inversion DC power control device that proposes according to the present invention comprises and carries out following steps:
D, digital large power high-frequency inversion DC power control device at first carry out initialization to the program of microprocessor 8 before single crystal growing furnace is heated;
E, live through the A step after, carry out Load-aware, when certain road during non-loaded or load short circuits, the output signal that should in time turn-off this road CPLD10;
F, carry out the control of permanent power by 8 pairs of loads of microprocessor; to single crystal growing furnace load heat; when if bearing power changes; duty by control CPLD10 output signal is regulation output power recently; control method adopts PID to regulate; microprocessor 8 not only will be finished the collection of voltage, electric current and power signal, also will finish collection and the protection output control of overcurrent, the signal such as overheated.
The digital large power high-frequency inversion DC power control device of the present invention that above-mentioned structure like this consists of and the technological innovation of method thereof all have many saving graces for technical staff of the same trade now, and the progressive that really possesses skills.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet be not to limit the present invention, any those skilled in the art, within not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (6)
1. digital large power high-frequency inversion DC power control device and method thereof, it is characterized in that, comprise current measurement circuit (1), tension measuring circuit (2), power given circuit (3), current foldback circuit (4), overheating protection circuit (5), open-phase protection (6), keyboard circuit (7), microprocessor (8), show (9), CPLD (10), the first drive circuit (11), the second drive circuit (12), the 3rd drive circuit (13), 4 wheel driven moves circuit (14), the 5th drive circuit (15), the 6th drive circuit (16), D/A change-over circuit (17), switching signal output circuit (18) and power circuit (19); Current measurement circuit (1), tension measuring circuit (2) are connected 3 with the power given circuit) output be connected with the A/D mouth of microprocessor (8) respectively; Current foldback circuit (4), overheating protection circuit (5) are connected 6 with open-phase protection) output be connected with the I/O mouth of microprocessor (8) respectively; The output of keyboard circuit (7) is connected with the I/O mouth of microprocessor (8); Show that (9) input is connected with the I/O mouth of microprocessor (8); The input of switching signal output circuit (18) is connected with the I/O mouth of microprocessor (8); CPLD (10) input is connected with the I/O mouth of microprocessor (8); The first drive circuit (11), the second drive circuit (12), the 3rd drive circuit (13), the moving circuit (14) of 4 wheel driven, the 5th drive circuit (15) are connected with the output of CPLD (10) respectively with the 6th drive circuit (16); D/A change-over circuit (17) is connected with the I/O mouth of microprocessor (8); The voltage output end of power circuit (19) is connected with the power end of microprocessor (8).
2. digital large power high-frequency inversion DC power control device as claimed in claim 1 and method thereof, it is characterized in that, the moving circuit (14) of the first drive circuit (11), the second drive circuit (12), the 3rd drive circuit (13), 4 wheel driven, the 5th drive circuit (15) and the 6th drive circuit (16) are the H bridge circuit, and output is controlled respectively the IGBT in the main circuit separately.
3. digital large power high-frequency inversion DC power control device as claimed in claim 1 and method thereof, it is characterized in that, current collection circuit (1) utilizes the total output current signal of Hall current sensor collection, and the output signal of current collection circuit (1) is 0-10VDC.
4. digital large power high-frequency inversion DC power control device as claimed in claim 1 and method thereof is characterized in that, tension measuring circuit (2) utilizes the total output voltage of divider resistance collection at dc output end.
5. the method for a digital large power high-frequency inversion DC power control device is characterized in that, comprises and carries out following steps:
A, controller at first carry out initialization to the program of microprocessor (8) before single crystal growing furnace is heated;
B, live through the A step after, carry out Load-aware, when certain road during non-loaded or load short circuits, the output signal that should in time turn-off this road CPLD (10);
C, by microprocessor (8) control of permanent power is carried out in load; to single crystal growing furnace load heat; when if bearing power changes; duty by control CPLD (10) output signal is regulation output power recently; control method adopts PID to regulate; microprocessor (8) not only will be finished the collection of voltage, electric current and power signal, also will finish collection and the protection output control of overcurrent, the signal such as overheated.
6. digital large power high-frequency inversion DC power control device as claimed in claim 1 and method thereof, it is characterized in that CPLD (10) exports 6 groups of independently frequency adjustable (7-12KHZ), duty ratio is adjustable (0-45%) square-wave signals simultaneously.
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| CN103412587A (en) * | 2013-08-12 | 2013-11-27 | 长沙思强自动化科技有限公司 | Device and method for graphite electric hot plate temperature control |
| CN104009532A (en) * | 2014-05-05 | 2014-08-27 | 吉林大学 | Fast charging and discharging power source device of nuclear magnetic resonance water detector |
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Cited By (3)
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| CN103412587A (en) * | 2013-08-12 | 2013-11-27 | 长沙思强自动化科技有限公司 | Device and method for graphite electric hot plate temperature control |
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| CN104009532B (en) * | 2014-05-05 | 2017-01-04 | 吉林大学 | The fast charging and discharging supply unit of nuclear magnetic resonance, NMR water detector |
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Application publication date: 20130313 |