CN101364117A

CN101364117A - Non-complementary chop controlling intelligent AC voltage-stabilizing and pressure regulating method and device

Info

Publication number: CN101364117A
Application number: CNA2008103047165A
Authority: CN
Inventors: 刘臻; 刘兴华
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-09-26
Filing date: 2008-09-26
Publication date: 2009-02-11
Anticipated expiration: 2028-09-26
Also published as: CN101364117B

Abstract

The invention discloses a non-complementary chopping-control intelligent AC voltage-stabilizing and voltage-regulating method and a device. The voltage signal and the current signal of a circuit are collected and processed by a signal collecting module (1) and then converted to a timing control signal by an input signal combining module (2); the timing control signal is input to a timing interlock module (4); and the signals of a PWM wave signal generating module (3) and the timing interlock module (4) are simultaneously input to a signal modulating module (6) to obtain a PWM impulse control signal which is modulated by the timing control signal. The method and the device adopt an embedded single-chip microcomputer as the core to control and complete the processes relating to the power signal collection, the PWM signal generation and regulation, the non-complementary chopping-control signal generation and the circuit protection. Compared with the prior art using the hardware technique or the computer control technique with regard to the PWM signal generation and regulation, the circuit structure is differentiated and improved essentially at the levels, and the control accuracy and the overall stability and reliability are greatly increased .

Description

Non-complementary chop controlling intelligent AC voltage-stabilizing, pressure regulation method and device

Technical field

The present invention relates to a kind of non-complementary chop controlling intelligent AC voltage-stabilizing, pressure regulation method and device, belong to non-complementary chop controlling formula AC voltage-stabilizing, voltage-regulating technique field.

Background technology

In the prior art, a large amount of voltage stabilizing, pressure regulators that use mostly are electromagnetic type or thyristor installation.There is electromagnetic shifting in the electromagnetic type device, and carbon brush dodges disconnected performance shortcomings of impacting, and the processing technology complexity, and the nonferrous materials consumption is big, shortcomings such as product heaviness; The major defect of thyristor installation then is destroyed output voltage waveforms complete, and produces a large amount of harmonic waves, causes electromagnetic pollution.For technology newer cut the control regulator, also have following problem, the pwm pulse hardware generation technique that is adopted falls behind relatively and is outmoded, the pulse-width controlled effect obviously is inferior to pwm pulse software generation technique.There is control signal sequential overlapping phenomenon, easily causes power supply short circuit.It is low that the spike pulse undesired signal is suppressed response speed, and the buffer circuit energy consumption is bigger.Relevant control circuit is integrated, the modular structure level is on the low side, and the intelligent degree of treatment of system control signal is not high, and circuit structure complexity, Electro Magnetic Compatibility are poor.

Summary of the invention

The objective of the invention is to: provide a kind of simple in structure, control is flexible, and the non-complementary chop controlling intelligent AC voltage-stabilizing of working stability, pressure regulation method and device are to overcome the deficiencies in the prior art.

Non-complementary chop controlling intelligent AC voltage-stabilizing of the present invention, pressure regulation method, alternating voltage with primary circuit, ac current signal is by the signal acquisition module collection, be processed into the input signal of computer Recognition, again this input signal is transformed into timing control signal by the input signal composite module, timing control signal is input to the sequential interlocking module, overlapping between the prevention timing control signal sequential to take place, the signal of the pwm pulse signal of PWM ripple signal generating module output and the output of sequential interlocking module is input to the signal modulation module simultaneously, thereby obtains being subjected to the pwm pulse control signal of timing control signal modulation by signal modulation module output signal.

Above-mentioned non-complementary chop controlling intelligent AC voltage-stabilizing, pressure regulation method, the output signal of signal modulation module and signal acquisition module is input to the signal composite module, input signal after the pwm pulse control signal that the signal composite module will be modulated and signal acquisition module are handled carry out synchronous compound back output complete cut the control composite signal, this is cut the control composite signal and is input to driver module.

Above-mentioned non-complementary chop controlling intelligent AC voltage-stabilizing, pressure regulation method, PWM ripple signal generating module adopt single-chip microcomputer to generate the adjustable PWM ripple signal of pulsewidth voluntarily.

Non-complementary chop controlling intelligent AC voltage-stabilizing, regulator, structure comprises signal acquisition module and PWM ripple signal generating module, signal acquisition module connects the signal combination module, the signal combination module connects the sequential interlocking module, and sequential interlocking module and PWM ripple signal generating module are connected respectively to the signal modulation module.

Above-mentioned non-complementary chop controlling intelligent AC voltage-stabilizing, regulator, the output signal of signal modulation module and signal acquisition module is input to the signal composite module, and the control composite signal of cutting of signal composite module output is input to driver module.

What is called is cut the control pressure regulation, promptly utilize fixed pulse modulation technology frequently that alternating voltage waveform is divided into its changes in amplitude rule wide spike train consistent with divided power supply first-harmonic, change dutycycle, the regulating impulse width just can reach and regulate the purpose that output voltage effectively has value.Its output voltage size also can be regulated continuously, and harmonic content is little, easily filtering.Compare with the existing control voltage-regulating technique of cutting, the single-chip microcomputer that the present invention adopts generates the pwm pulse mode, and no matter the dirigibility of the quality of signals that generates, adjustment process stability, control accuracy and control mode all is much better than (existing cut to control account for dominant position in the voltage regulator control circuit) hardware pwm signal occurring mode." the sequential interlock circuit " that the present invention adopts stopped the generation that electromagnetic interference (EMI) and power-supply fluctuation cause control signal " sequential is handed over more " phenomenon.Electromagnetic compatibility level and " robustness " of complete machine have been promoted.The non-complementary chop controlling voltage regulator control circuit that existing belt current detects adopts collection, phase identification and the relevant treatment of combinational logic circuit realization to power supply signal more, the present invention then adopts embedded scm, substitute and systematically finish comprehensively the foregoing circuit function, also simplified circuit simultaneously, strengthen circuit reliability, improved the time sequence precision of output signal greatly.The present invention takes place and adjustment from relevant power supply signal collection, pwm signal, forms and circuit protection until the non-complementary chop controlling signal, and be that core is controlled and finished all with embedding people formula single-chip microcomputer.It with adopt hardware mode fully, or only on pwm signal generation and adjustment mode, adopt computer-controlled technological means to compare, not only the circuit structure level has difference and the lifting on essence and the level, and control accuracy and complete machine stability, reliability also have comparatively significantly raising.

Description of drawings

Accompanying drawing 1 is a structural representation of the present invention;

Accompanying drawing 2 is the incomplementarity control timing figure of inductive load;

Accompanying drawing 3 is for cutting control regulating circuit structural representation.

Description of reference numerals: 1-signal acquisition module, 2-signal combination module, 3-PWM ripple signal generating module, 4-sequential interlocking module, 5-driver module, 6-signal modulation module, 7-signal composite module, 8-protection, on-off circuit, Lif-input end inductance, Cif-input end capacitor, Lof-output terminal inductance, Cof-output capacitor, R-resistance, L-inductance, V1, V2, VF1 and V _F-insulated gate bipolar triode, V _D1, V _D2, V _DF1And V _DF2-fast recovery diode.

Embodiment

The present invention is described in further detail below in conjunction with embodiment, but not as limitation of the present invention.

Embodiments of the invention: structure comprises signal acquisition module 1 and PWM ripple signal generating module 3, signal acquisition module 1 can adopt existing analogue amplifier, signal converter, and pulse shaping circuit, PWM ripple signal generating module 3 adopts single-chip microcomputer HT46R23, signal acquisition module 1 connects signal combination module 2, the signal input timing interlocking module 4 of signal combination module 2, to stop that the sequential overlapping phenomenon takes place between the multichannel timing control signal, the signal of PWM ripple signal generating module 3 and 4 outputs of sequential interlocking module is input signal modulation module 6 simultaneously, obtains being subjected to the pwm pulse control signal of timing control signal modulation.Signal combination module 2 adopts single-chip microcomputer HT48R30A-1.

After obtaining being subjected to the pwm pulse control signal of timing control signal modulation, with the power supply signal input signal composite module 7 after signal modulation module 6 and signal acquisition module 1 processing, carry out the power supply signal of pwm pulse control signal and collection compound synchronously, obtain the complete control composite signal of cutting, cut control composite signal input driver module 5, cut control circuit by 5 pairs of driver modules and regulate.Driver module 5 adopts existing driving circuit EXB841.

Also comprise protection, on-off circuit 8 in the circuit, protection, on-off circuit 8 are connected with driver module 5 with signal acquisition module 1, PWM ripple signal generating module 3 respectively.Protection, on-off circuit 8 adopt prior art.

Set forth principle of work of the present invention below in conjunction with accompanying drawing 2 and accompanying drawing 3.Accompanying drawing 2 is the incomplementarity control signal sequential chart of inductive load, U _GBe pwm pulse signal, U _GS1, U _GS2, U _GSF1And U _GSF2Be the signal of signal combination module 2 outputs, U _G1, U _G2, U _GF1And U _GF2Be the control signal of driver module 5 outputs, U ₁Be that supply voltage is insulated the grid double pole triode and cuts after the control, the waveform before unfiltered, U ₀Be the output waveform of non-complementary chop controlling pressure regulation primary circuit, accompanying drawing 3 is existing non-complementary chop controlling pressure regulation primary circuit structure principle chart, U _CBe supply voltage, input end inductance L and if input end capacitor Cif form the input end low-pass filter.Output terminal inductance L of and output capacitor Cof form the output terminal low-pass filter.Insulated gate bipolar triode V ₁, V ₂, V _F1And V _F2Gate pole be subjected to the control signal U of driver module 5 output _G1, U _G2, U _GF1And U _GF2Control, resistance R and inductance L series circuit are represented inductive load, the control signal U of driver module 5 outputs _G1, U _G2, U _GF1And U _GF2Control insulated gate bipolar triode V in the accompanying drawing 3 respectively ₁, V ₂, V _F1And V _F2Gate pole, the decision V ₁, V ₂, V _F1And V _F2On off state.During the positive half cycle electric current and voltage of supply voltage oppositely: V ₂VF ₁Positively biased is become in emission, so that the path of load current by power supply to be provided, makes V simultaneously ₁Zero-bias is become in emission, prevents the phenomenon of conducting simultaneously, and at V _F2Emitter junction adds cuts the control signal.V _F2Load current passes through V during conducting _F2It is zero that afterflow, load end are pressed, V _F2During shutoff, load current passes through V ₂Flow to power supply, output voltage equals load end and presses; Electric current and voltage in the same way during, V ₂, V _F1Emitter junction still keeps positively biased, V _F2Emission becomes zero partially, V ₁Emitter junction adds cuts control signal, V ₁Conducting be power supply to electric, V ₁V during shutoff _F1Form the load continuous current circuit.At the supply voltage negative half period, its principle of work is similar with positive half cycle.Present embodiment is example with the inductive load, and is resistive identical with the capacitive load control principle.

The alternating voltage of primary circuit, ac current signal by the input signal that signal acquisition module 1 is gathered, processing and amplifying becomes computer Recognition, are transformed into timing control signal U by input signal composite module 2 again _GS1, U _GS2, U _GSF1And U _GSF2, promptly according to voltage, the current phase of circuit, with insulated gate bipolar triode V ₁, V ₂, V _F1And V _F2The gate pole control signal in a power frequency period, be divided into 4 intervals, then with the signal of PWM ripple signal generating module 3 and sequential interlocking module 4 outputs input signal modulation module 6 simultaneously, obtain being subjected to the pwm pulse control signal of timing control signal modulation, with the output signal of signal modulation module 6 and the power supply signal input signal composite module 7 after signal acquisition module 1 processing, the power supply signal of pwm pulse control signal and collection is carried out compound synchronously, obtain the complete control composite signal of cutting, isolate obtaining U after amplifying again by driver module 5 _G1, U _G2, U _GF1And U _GF2, to cutting control regulating circuit I insulated gate bipolar triode V in the accompanying drawing 3 ₁, V ₂, V _F1And V _F2Gate pole control.Because adopt single-chip microcomputer as PWM ripple signal generating module 3, the dirigibility that generates quality of signals, adjustment process stability, control accuracy and control mode all is much better than existing hardware pwm signal occurring mode.The mode of single-chip microcomputer generation PWM ripple signal can be by prior art.

Because there are the factors such as detection error of electromagnetic interference (EMI) phenomenon and circuit self unavoidably in the working environment of control circuit, the timing control signal of signal combination module 2 outputs must carry out the sequential interlocking by 4 pairs of control signals of sequential interlocking module, and is overlapping to stop control signal generation sequential.Promptly pass through same half cycle two path control signal such as insulated gate bipolar triode V ₁And V _F2Control signal U _GS1, and U _GSF2Carry out the sequential locking processing, stop control signal sequential overlapping phenomenon to take place, avoid insulated gate bipolar triode V ₁And V _F2Conducting simultaneously is short-circuited.The reliability and stability of circuit have been improved.The sequential interlocking module 4 of present embodiment adopts logical circuit, with the one U in the two path control signal _GS1After the paraphase, again and U _GSF2Carry out and calculating, the U of Xiang Yuhou _GSF2Control signal just not can with U _GS1The overlapping phenomenon of sequential appears.The mode of sequential interlocking can also be that signal modulation module 6 connects sequential interlocking module 4, will be subjected to the pwm pulse control signal of timing control signal modulation to carry out the sequential interlocking.

Claims

[claim 1] a kind of non-complementary chop controlling intelligent AC voltage-stabilizing, pressure regulation method, it is characterized in that: with the alternating voltage of primary circuit, ac current signal is gathered by signal acquisition module (1), be processed into the input signal of computer Recognition, again this input signal is transformed into timing control signal by input signal composite module (2), timing control signal is input to sequential interlocking module (4), overlapping between the prevention timing control signal sequential to take place, the signal of the pwm pulse signal of PWM ripple signal generating module (3) output and sequential interlocking module (4) output is input to signal modulation module (6) simultaneously, thereby obtains being subjected to the pwm pulse control signal of timing control signal modulation by signal modulation module (6) output signal.
[claim 2] non-complementary chop controlling intelligent AC voltage-stabilizing according to claim 1, pressure regulation method, it is characterized in that: the output signal of signal modulation module (6) and signal acquisition module (1) is input to signal composite module (7), input signal after the pwm pulse control signal that signal composite module (7) will be modulated and signal acquisition module (1) are handled carry out synchronous compound back output complete cut the control composite signal, this is cut the control composite signal and is input to driver module (5).
[claim 3] non-complementary chop controlling intelligent AC voltage-stabilizing according to claim 1, pressure regulation method is characterized in that: PWM ripple signal generating module (3) adopts single-chip microcomputer to generate the adjustable PWM ripple signal of pulsewidth voluntarily.
[claim 4] a kind of non-complementary chop controlling intelligent AC voltage-stabilizing, regulator, it is characterized in that: structure comprises signal acquisition module (1) and PWM ripple signal generating module (3), signal acquisition module (1) connects signal combination module (2), signal combination module (2) connects sequential interlocking module (4), and sequential interlocking module (4) is connected respectively to signal modulation module (6) with PWM ripple signal generating module (3).
[claim 5] non-complementary chop controlling intelligent AC voltage-stabilizing according to claim 4, regulator, it is characterized in that: the output signal of signal modulation module (6) and signal acquisition module (1) is input to signal composite module (7), and the control composite signal of cutting of signal composite module (7) output is input to driver module (5).