CN104570848A - Method and device for controlling load state and power through transmitting control information by using silicon controlled rectifier - Google Patents
Method and device for controlling load state and power through transmitting control information by using silicon controlled rectifier Download PDFInfo
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- CN104570848A CN104570848A CN201410750637.2A CN201410750637A CN104570848A CN 104570848 A CN104570848 A CN 104570848A CN 201410750637 A CN201410750637 A CN 201410750637A CN 104570848 A CN104570848 A CN 104570848A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/66—Regulating electric power
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Abstract
The invention discloses a method and device for controlling a load state and a power through transmitting control information by using a silicon controlled rectifier. The method is characterized in that in a power supplying loop of an alternating current power supply, a conduction angle is slightly changed by using a silicon controlled rectifier regulating device, in a case where transmission energy changes slightly, control information is transmitted by using a change of the conduction angle, so that the output state and the power of the load are changed by one or more receiving control devices in the power supplying loop, wherein the change range of the power of the load is much larger than the change of the power supplying energy caused by the change of the conduction angle of the silicon controlled rectifier. The method has the advantages that the conduction angle is slightly changed, so that the output state of the load can be greatly controlled, the change range of the conduction angle is small, the energy transmission does not basically change, the generated interference is small, the compensation is easy and effective, the original circuit wiring is compatible, the power of the load is regulated through information transmitted by the silicon controlled rectifier, and the state (for example, positive rotation and negative rotation of a motor, and the like) of the load can be controlled to be wedded to the resistive load, so that the application range is enlarged.
Description
Technical field
The present invention relates to the method and apparatus that a kind of controllable silicon transmitting control information realizes control load state and power, be widely used in the power adjustments of all kinds of load.
Background technology
Controllable silicon controls the transmission of energy usually in ac power supply situation as power adjustments device, along with the change of conduction angle, while change transmitting energy, its humorous wave interference produced is also in continuous change, these needs effectively compensate, to alleviate thus to the infringement that electrical network brings.But along with the change interference of conduction angle also changes at the same time, in a more wide in range variation range, effective compensation is very difficult.Due to silicon controlled characteristic, this application is generally used in the device of purely resistive load, and capacitive, inductive load are difficult to application.We common to incandescent lamp light modulation, well heater temperature adjustment be exactly such application.Obviously directly control to be applied on range of application and interference compensation for the controllable silicon of electric flux to encounter problem.
Along with the development of electronic technology, the electronics such as frequency converter, electronic dimming ballast just can change the output state of equipment when not changing and supplying electric flux, the such as electronic dimming ballast of 0 ~ 10 volt, by applying the voltage of 0 ~ 10 volt to control end, just can change the brightness of lamp, although supply electric flux to be constant all the time in this process, the actual power consumption of lamp changes along with the conversion of brightness, without the electrical network interference problem that above-mentioned SCR control mode produces.But also occurred new problem, this new control model needs extra increase by one group of operation circuit, during unlike original control power supply energy mode, controllable silicon regulator is serially connected in load circuit, and circuit connects simply.For new building, the facility built, operation circuit and energy supply connection together can be set up during wiring, existing constructions just can only have been transformed in rewiring.New way is had to solve this problem? our the soluble problem of patent of invention that will apply for that Here it is.
Summary of the invention
The present invention aims to provide the method and apparatus that a kind of controllable silicon transmitting control information realizes control load state and power, changes output state and the power of load, and do not need additionally to increase by one group of operation circuit when substantially not changing and supplying electric flux.
Technical scheme of the present invention is: the device of a kind of method of SCR control load condition and power, it is characterized in that, comprise and be connected on thyristor regulating regulating device in ac power supply circuit and receiving control device, this receiving control device is that one or more is in parallel, and the output terminal of each receiving control device connects load; This receiving control device follows the change of thyristor regulating regulating device to adjust bearing power.
Described thyristor regulating regulating device comprises controllable silicon KS1, bidirectional triode thyristor trigger tube KS2, resistance in series R1, variable resistor R2, parallel resistance R3 and electric capacity C, and controllable silicon in serial connection is in ac power supply circuit; It is in parallel with controllable silicon KS1 after resistance in series R1, variable resistor R2 and electric capacity C connect mutually; Control end and the bidirectional triode thyristor trigger tube KS2 and parallel resistance R3 of controllable silicon KS1 connect and are connected with the contact between variable resistor R2 and electric capacity C afterwards.
Described variable resistor is replaced by the increase button of mutually connecting and minimizing button, is increasing button and is reducing the increase resistance accordingly in parallel of difference on button and minimizing resistance.
Described receiving control device is made up of conduction angle state detection unit and bearing power control module, and the output terminal of conduction angle state detection unit is connected with the input end of bearing power control module; Be loaded with different conduction angle to the input end of this conduction angle state detection unit but the less control information waveform of variation range through described thyristor regulating regulating device, export conducting or cut-off control information after treatment; The size of the conducting of bearing power control module model-following control information or the real-time regulating load power of change of cut-off.
Described receiving control device is made up of conduction angle state detection unit and intelligent load control module, the modulation intelligence of conduction angle transmission is given intelligent load control module by conduction angle state detection unit, intelligent load control module is resolved and is performed these control informations, the various change of control load.
Advantage of the present invention is: change conduction angle by a small margin, just can significantly control load output state, conduction angle variation range is little, and Energy Transfer variation range is little, and the interference of generation is little, compensation is easy and effective, compatible original wiring, through the information that controllable silicon transmits, not only regulates the power of load, the state (rotating etc. as motor) of control load can also not stick to resistive load, expand range of application.Be with the difference of traditional SCR control device: in the present invention, the control object of controllable silicon to alternating current is not to change transmitting energy, direct control load power, but when substantially not changing transmitting energy, for control information transmission, after receiving these control informations by special receiving control device, the state of control load and power.
Accompanying drawing explanation
Fig. 1 is the overall circuit block diagram of apparatus of the present invention;
Fig. 2 is the circuit diagram of the first control silicon regulating device (one of simulation application mode) of the present invention;
Fig. 3 is the circuit diagram that a kind of receiving control device of the present invention obtains control information part;
Fig. 4 is the principle of work oscillogram of the receiving control device shown in Fig. 3;
Fig. 5 is the circuit diagram of the second control silicon regulating device (simulation application mode two) of the present invention;
Fig. 6 is the circuit diagram of the third control silicon regulating device (digital modulator) of the present invention.
Embodiment
The core content of method of the present invention is, in ac power supply loop, utilize thyristor regulating regulating device change conduction angle by a small margin, when transmitting energy is substantially constant, carry out transmitting control information with the change of conduction angle, make the one or more receiving control devices in same supply line change output state.Such as: pilot angle can be chosen within the scope of 0 ~ 20 °, corresponding conduction angle is 180 ° ~ 160 °, and corresponding closing time is 0 ~ 2.2 millisecond, and corresponding energy variation only has 0 ~ 3%.Change conduction angle by a small margin, conduction angle variation range is little, Energy Transfer is substantially constant, the interference produced is little, compensation is easy and effective, compatible original wiring, the various states of all right control load except carrying out the power of load controlling, do not stick to resistive load, expand range of application.Be illustrated respectively below:
One, control information transfer mode:
Two kinds of basic application modes of controllable silicon transmitting control information: simulation application and digital application.
1, simulation application mode 1: thyristor regulating regulating device is consistent with traditional device, just setting range little (if pilot angle is 0 ~ 20 ° of scope).In the adjustable range that this is little, receiving trap controls output and reaches full changes in amplitude.The action of silicon controlled rectifier regulation conduction angle rests on certain position, exports and just rests on relevant position, and export and follow input change, for electric flux all the time by SCR control, but variable quantity is very little.
2, simulation application mode 2: thyristor regulating regulating device and traditional device basically identical, except setting range is little, only being in course of adjustment has small adjustment to transmitting energy, after the state of expectation is adjusted in output, thyristor regulating regulating device returns to complete conducting state, and receiving trap self locks this state.Such as:
(1) pilot angle is that 0 ° (conduction angle 180 °) represents locking (maintenance) current state, the complete conducting of regulating device controllable silicon.The load output state of receiving control device remains unchanged.
(2) pilot angle is that 10 ° (conduction angle 170 °) represents that increase exports, and receiving control device progressively increases load according to certain step-length and exports.
(3) pilot angle is that 20 ° (conduction angle 160 °) represents that minimizing exports, and receiving control device gradually reduces load according to certain step-length and exports.
3, digital application mode: modulate as one--demodulation mode, with the different transmission of digital control informations of conduction angle, as: full conducting interval scale numeral 0, pilot angle 10 ° represents numeral 1, the one-way transmission 1bit data when AC power each zero passage, after data are transmitted, controllable silicon recovers fully conducting state.In fact thyristor regulating regulating device becomes digital controlled signal modulation transmitter, by intelligent load control module control (as single-chip microcomputer or by computer interfaceJi Suanjijiekou by conputer controlled), digital controlled signal adopts frame structure, the agreement of some kind can be followed, or be only simply divided into address code and control code, for controlling the one or more equipment in a supply line.
Thyristor operating angle of the present invention needs the scope of adjustment less, but the variation range of bearing power can be made very large, this is different from silicon controlled conventional use: regulate silicon controlled conduction angle, the energy being transferred to load by controllable silicon is changed, and changed power degree and the scope of its intensity of variation and scope and load are consistent; In the Alternating Current Power Supply environment of 50 hertz, SCR control angle (pilot angle+conduction angle=180 °) range of adjustment of this method can be chosen according to being particularly applicable within the scope of 0 ~ 60 °: this is because: the less change to energy of range of adjustment is less, the humorous wave interference less (referring to following table) produced, compensation is easy and effective, less to the infringement of electrical network; On the contrary, the larger change to energy of range of adjustment is just large, and the humorous wave interference of generation is just strong, the situation that the cost-effective fruit of compensation is little not as good as range of adjustment, also may have certain infringement to electrical network; But range of adjustment is too small can make reliability decrease because of being easily interfered again, therefore need to find out reliable minimal adjustment scope, as the pilot angle of application system according to the disturbed condition of actual application environment.
Energy variation corresponding to different pilot angles [complete cycle energy is 100%, and energy variation computing formula is: [the 1-cos(pilot angle number of degrees)]/2]:
| Pilot angle | 5° | 10° | 15° | 20° | 30° | 40° | 50° | 60° |
| Conduction angle | 175° | 170° | 165° | 160° | 150° | 140° | 130° | 120° |
| Energy variation | 0.2% | 0.8% | 1.7% | 3% | 6.7% | 11.7% | 17.9% | 25% |
Suppose that certain applied environment can work reliably in 0 ~ 20 ° of range of adjustment, this will determine that the pilot angle MAXIMUM SELECTION of this application system is 20 ° (lower same).Now corresponding conduction angle is 180 ° ~ 160 °, and corresponding closing time is 0 ~ 2.2 millisecond, and corresponding energy variation only has 0 ~ 3%.
Two, the physical circuit of said method is realized see Fig. 1-Fig. 6.
See Fig. 1, overall circuit block diagram of the present invention comprises and is connected on thyristor regulating regulating device in ac power supply circuit and at least one receiving control device, and this receiving control device can be that one or more is in parallel, and the output terminal of each receiving control device connects load; This receiving control device follows the change of thyristor regulating regulating device to adjust bearing power.
See Fig. 2, it is a kind of thyristor regulating regulating device implementing above-mentioned simulation application mode 1, this thyristor regulating regulating device is electric capacity phase shift thyristor gating circuit, comprise controllable silicon KG1 and trigger tube KG2, resistance in series R1, variable resistor R2, parallel resistance R3 and electric capacity C, controllable silicon KG1 is connected in ac power supply circuit; It is in parallel with the first controllable silicon KG1 after resistance in series R1, variable resistor R2 and electric capacity C connect mutually; Control end and the trigger tube KG2 and parallel resistance R3 of controllable silicon KG1 connect and are connected with the contact between variable resistor R2 and electric capacity C afterwards.
The circuit realizing conduction angle control is not limited to the electric capacity phase shift thyristor gating circuit shown in Fig. 2, adjusting knob (R2) makes thyristor operating angle change, and sends control information, compared with applying with traditional controllable silicon, conduction angle variation range is little, such as 180 ° ~ 160 °.Such range of adjustment makes the change only being had 3% by the energy of regulating device.
See Fig. 3, receiving control device described in the first is made up of conduction angle state detection unit and bearing power control module two parts, and the output terminal of conduction angle state detection unit is connected with the input end of bearing power control module. and realize the circuit that conduction angle detects and comprise the circuit be not limited to shown in Fig. 3.This conduction angle state detection unit is made up of bridge rectifier, zero passage detection and optocoupler output.
The waveform of control information (different conduction angle, but variation range is less) is loaded with, the A waveform namely in Fig. 4, the waveform B waveform after bridge rectifier, conduction angle (or cut-off) control information that optocoupler exports through thyristor regulating regulating device.Conducting and cut-off have correlativity, and the control information that can send as thyristor regulating regulating device is used.Bearing power control section (such as light modulator, frequency converter etc.) follows the size of the real-time regulating load power of change of conduction angle (or cut-off).Such as, regulate the adjusting knob of thyristor regulating regulating device, make in silicon controlled conduction angle certain value within the scope of 160 ~ 180 degree, bearing power control section adjusts bearing power accordingly.In the variation range of conduction angle, bearing power control section makes bearing power variation range meet actual loading demand for control.
See Fig. 5, being the another kind of thyristor regulating regulating device implementing simulation application mode 2, is a kind of electric capacity phase shift thyristor gating circuit.Variable resistor R2 in Fig. 2 is replaced by increase button N1 parallel with one another and minimizing button N2 by this circuit, is increasing button N1 and is reducing the increase accordingly in parallel resistance R8 of difference on button N2 and minimizing resistance R9.Increase, reduce and keep the circuit of the conduction angle of information control to be not limited to the circuit shown in Fig. 5 for realizing transmitting.
Trigger (once) " increase " button N1, pilot angle is that 10 ° (conduction angle 170 °) represents that increase exports.
Triggering (once) " minimizing " button control angle is that 20 ° (conduction angle 160 °) represents that minimizing exports.
Not according to timing button angle be 0 ° (conduction angle 180 °) represent keep current state.
Also the circuit shown in Fig. 3 (but being not limited to Fig. 3) can be adopted with the receiving control device that Fig. 5 is supporting.Bearing power control section, according to the actual demand of load, being determined step-length and the repetitive operation cycle of increase and minimizing, when receiving " maintenance " instruction, being kept current bearing power state.Except carrying out the adjustment of bearing power, also can control the state of load, such as, controlling the rotating of motor, making electrically driven curtain folding.
See Fig. 6, be the thyristor regulating regulating device of digital application mode, i.e. a kind of digital modulator.Modulate as one--demodulation mode, with the different transmission of digital control informations of conduction angle, as: full conducting interval scale numeral 0, pilot angle 10 ° represents numeral 1, the one-way transmission 1bit data when AC power each zero passage, after data are transmitted, controllable silicon recovers fully conducting state.The thyristor regulating regulating device realizing such function comprises the circuit be not limited to below shown in Fig. 6.Circuit realiration AC power zero passage detection (principle of work is identical with Fig. 3) on the left of intelligent control unit in Fig. 6, zero cross signal gives intelligent control unit (being transferred to control computer as single-chip microcomputer or by computer interfaceJi Suanjijiekou), according to working control demand, intelligent control unit U zero cross signal synchronous under through suitable time delay, export signal after current-limiting resistance R10 and photo-coupler G2 in triggering graph 6 right side controllable silicon KG, send 1bit digital controlled signal.Control information can adopt frame structure, can follow the agreement of some kind, or is only simply divided into address code and control code, for controlling the one or more equipment in a supply line.
Also the circuit shown in Fig. 3 (but being not limited to Fig. 3) can be adopted with the receiving control device that Fig. 5 is supporting.Receiving control device controls two parts by conduction angle state-detection and intelligent load and forms, the modulation intelligence of conduction angle transmission gives intelligent load control section (single-chip microcomputer or be transferred to computer by computer interfaceJi Suanjijiekou), intelligent load control section is resolved and is performed these control informations, the various change of control load.
Claims (5)
1. the device by the method for SCR control load condition and power, it is characterized in that, comprise and be connected on thyristor regulating regulating device in ac power supply circuit and receiving control device, this receiving control device is that one or more is in parallel, and the output terminal of each receiving control device connects load; This receiving control device follows the change of thyristor regulating regulating device to adjust bearing power.
2. the device of SCR control load condition according to claim 1 and power, it is characterized in that, described thyristor regulating regulating device comprises controllable silicon KS1, bidirectional triode thyristor trigger tube KS2, resistance in series R1, variable resistor R2, parallel resistance R3 and electric capacity C, and controllable silicon in serial connection is in ac power supply circuit; It is in parallel with controllable silicon KS1 after resistance in series R1, variable resistor R2 and electric capacity C connect mutually; Control end and the bidirectional triode thyristor trigger tube KS2 and parallel resistance R3 of controllable silicon KS1 connect and are connected with the contact between variable resistor R2 and electric capacity C afterwards.
3. the device of SCR control load condition according to claim 2 and power, it is characterized in that, described variable resistor is replaced by the increase button of mutually connecting and minimizing button, is increasing button and is reducing the increase resistance accordingly in parallel of difference on button and minimizing resistance.
4. the SCR control load condition according to Claims 2 or 3 and the device of power, it is characterized in that, described receiving control device is made up of conduction angle state detection unit and bearing power control module, and the output terminal of conduction angle state detection unit is connected with the input end of bearing power control module; Be loaded with different conduction angle to the input end of this conduction angle state detection unit but the less control information waveform of variation range through described thyristor regulating regulating device, export conducting or cut-off control information after treatment; The size of the conducting of bearing power control module model-following control information or the real-time regulating load power of change of cut-off.
5. the device of SCR control load condition according to claim 4 and power, it is characterized in that, described receiving control device is made up of conduction angle state detection unit and intelligent load control module, the modulation intelligence of conduction angle transmission is given intelligent load control module by conduction angle state detection unit, intelligent load control module is resolved and is performed these control informations, the various change of control load.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410750637.2A CN104570848A (en) | 2014-12-10 | 2014-12-10 | Method and device for controlling load state and power through transmitting control information by using silicon controlled rectifier |
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| CN201410750637.2A CN104570848A (en) | 2014-12-10 | 2014-12-10 | Method and device for controlling load state and power through transmitting control information by using silicon controlled rectifier |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882879A (en) * | 2015-05-12 | 2015-09-02 | 周帅 | Single-phase load control device and method |
| CN106332495A (en) * | 2016-10-28 | 2017-01-11 | 桂林大创科技有限公司 | DC power supply and control circuit thereof |
-
2014
- 2014-12-10 CN CN201410750637.2A patent/CN104570848A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882879A (en) * | 2015-05-12 | 2015-09-02 | 周帅 | Single-phase load control device and method |
| CN106332495A (en) * | 2016-10-28 | 2017-01-11 | 桂林大创科技有限公司 | DC power supply and control circuit thereof |
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Application publication date: 20150429 |