CN203399383U - Three-phase load control circuit capable of boosting voltage - Google Patents
Three-phase load control circuit capable of boosting voltage Download PDFInfo
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- CN203399383U CN203399383U CN201320498464.0U CN201320498464U CN203399383U CN 203399383 U CN203399383 U CN 203399383U CN 201320498464 U CN201320498464 U CN 201320498464U CN 203399383 U CN203399383 U CN 203399383U
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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Abstract
The utility model provides a three-phase load control circuit capable of boosting voltage, which comprises a control circuit and a voltage regulating circuit, wherein the control circuit comprises a PLC (programmable logic controller), an angle connection relay and a plurality of voltage regulating relays, the voltage regulating circuit comprises loads and a three-phase autotransformer, two ends of a secondary coil of the three-phase autotransformer are connected to a three-phase input end and a neutral line input end respectively, a plurality of taps of the secondary coil are connected to neutral end of the load in series through the plurality of voltage regulating relays, and three contacts of the angle connection relay are connected between each two loads respectively. The three-phase load control circuit provided by the utility model solves the defect that a traditional energy-saving controller only can reduce voltage but not boost the voltage. The three-phase load control circuit can reduce voltage at two ends of the load when the network voltage is normal so as to achieve the purpose of energy saving, and can boost the voltage at two ends of the load when the network voltage is low so as to realize normal lighting of a high intensity discharge lamp.
Description
Technical field
The utility model relates to lighting control technique field, refers in particular to a kind of threephase load control circuit that can boost.
Background technology
Along with the development of city illumination and Landscape Lighting, power consumption problem is more and more subject to the attention of country and government.Many cities and area are because facing the problem of power shortage, often street lamp is adopted and carrys out saves energy every the control mode that small cup is turned off the light or turn off the light midnight, although but can reach like this object of energy-saving and emission-reduction, tend to cause road lighting uneven, easily cause the generation of traffic accident.
At present, the illumination of road, tunnel and view all adopts high-voltage gas discharging light (High intensity Discharge conventionally, be abbreviated as HID), by the arc discharge in fluorescent tube, then produce very strong light in conjunction with the inert gas of filling in fluorescent tube or metallic vapour.Existing conventional high-voltage gas discharging light has high-pressure sodium lamp, high-pressure mercury lamp, xenon lamp, metal halide lamp etc.
After high-voltage gas discharging light access voltage, between electric arc tube two end electrodes, produce electric arc, because being heated material in pipe, the high temperature action of electric arc flashes to steam, the electricity of cathode emission is in anode motion process, clash into discharging substance and have atom, make it obtain power generation ionization and excite, then by excitation state, be returned to stable state.In order to guarantee the normal starter of high-voltage gas discharging light, need high-voltage gas discharging light two ends maintain at rated voltage state and maintain a period of time.Be subject to the operation principle restriction of high-voltage gas discharging light, when electrical network is lower, what just may cause high-voltage gas discharging light cannot normal ignition.Therefore adopt traditional energy saver, output end voltage is all equal to or less than input terminal voltage.
The Energy Saving Control of high-voltage gas discharging light adopts regulation voltage device and electronic ballast conventionally: regulation voltage device adopts autotransformer conventionally, utilize the voltage tap of relay or contactless switching device regulating load end, to reach the regulatory function of the both end voltage of light fixture; Electronic ballast can be realized the intellectuality of light is controlled by various automatic control very simply, can meet the requirement controlled of illumination, also can save a large amount of electric power, but electronic ballast price is high and stability is not enough, therefore less employing in actual applications.
Within open day, be that the patent of invention file that on 09 14th, 2011, publication number are CN102186299A discloses a kind of lighting saving device, relate to street lamp control technology field, being provided with the sky being connected with power supply opens, the other end that sky is opened is connected on the input of autotransformer and the input of bypass contactor, and the gear output of autotransformer and the output of bypass contactor are connected respectively a thermal relay.This invention has utilized relay and autotransformer, but only can reach step-down, and can not realize Based Intelligent Control.
Summary of the invention
Can only step-down energy-conservation and cannot normal ignition high-voltage gas discharging light when line voltage is lower or can not guarantee the problem of the normal lumen of high-voltage gas discharging light in order to solve existing streetlight control circuit, the utility model proposes a kind of threephase load control circuit that can boost, not only can when line voltage is normal, by reducing high-voltage gas discharging light both end voltage, reach energy-conservation object, also high-voltage gas discharging light both end voltage can raise when line voltage is lower, the normal lumen that starts high-voltage gas discharging light or increase high-voltage gas discharging light, also be applicable to other loads.
The technical scheme that the utility model adopts is: a kind of threephase load control circuit that can boost, comprise control circuit and regulating circuit, described control circuit comprises PLC controller and several relays, relay comprises a corner connection relay and several Voltage regulating relay, each relay all comprises control coil and the first contact, the second contact and San contact, described PLC controller is provided with two power ends, several inputs and several outputs, two power ends of PLC controller connect respectively A phase incoming end and neutral line input, each output of PLC controller is connected to neutral line input by the control coil of corner connection relay Voltage regulating relay respectively, described regulating circuit comprises load and coupling transformer, described load comprises A phase load, B phase load and C phase load, described 3-phase autotransformer is provided with three secondary coils that contain several taps, be respectively the secondary coil Ta that holds mutually a and neutral line input that connects that connects A phase load, connect secondary coil Tb that connecing of B phase load hold b and neutral line input mutually and the secondary coil Tc that is connected connecing of C phase load and holds mutually c and neutral line input, the number of taps of each secondary coil is consistent with the quantity of Voltage regulating relay, the tap of secondary coil Ta is connected in series to respectively the neutral end a1 of A phase load by the first contact of each Voltage regulating relay, the tap of secondary coil Tb is connected in series to respectively the neutral end b1 of B phase load by the second contact of each Voltage regulating relay, the tap of secondary coil Tc is connected in series to respectively the neutral end c1 of C phase load by the San contact of each Voltage regulating relay, connecing of A phase load held between a and the neutral end c1 of C phase load mutually, the neutral end a1 of A phase load holds between b mutually with connecing of B phase load, the neutral end b1 of B phase load holds with connecing of C phase load the San Ge contact that is in series with respectively corner connection relay between c mutually.
The utility model has overcome traditional energy-saving controller for street lamp can only step-down and the shortcoming that can not boost, a kind of threephase load voltage control circuit that can boost is provided, when line voltage is normal, by the different taps of secondary coil secondary are linked into the voltage that load reduces load two ends, reach energy-conservation object, and when electrical network is lower, can improve load voltage, the normal operation of proof load.The utility model is mainly used in the occasion that voltage ripple of power network is larger, or the occasion higher to voltage request.
As preferably, the end mutually that connects of end, B phase load mutually that connects of A phase load holds with connecing of C phase load A phase incoming end, B phase incoming end and the C phase incoming end that is connected three-phase alternating current by control the master switch QF of three-phase break-make simultaneously mutually.Master switch QF can be used as the master switch of whole circuit, is responsible for being switched on or switched off the connection of load and electric power system.
As preferably, also comprise light sensation transducer, described light sensation transducer is electrically connected to one of them input of PLC controller.PLC controller can be according to the feedback information of the light sensation transducer receiving, and control load lamp produces different brightness or carries out switching manipulation.
As preferably, also comprise voltage sensor, described voltage sensor is electrically connected to one of them input of PLC controller.PLC controller can be according to the feedback information of the voltage sensor receiving, and control load lamp produces different brightness or carries out switching manipulation.
As preferably, also comprise driving transducer, described driving transducer is electrically connected to one of them input of PLC controller.PLC controller can be according to the feedback information of the driving transducer receiving, and control load lamp produces different brightness or carries out switching manipulation.
The beneficial effects of the utility model are: not only can be when line voltage is normal, by reducing high-voltage gas discharging light both end voltage, reach energy-conservation object, also can be when line voltage be lower, rising high-voltage gas discharging light both end voltage, normally starts high-voltage gas discharging light or increases the lumen of high-voltage gas discharging light.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of a kind of main circuit of the present utility model;
Fig. 2 is the circuit diagram of PLC controller part of the present utility model.
In figure, U1-PLC controller, L1-A phase load, L2-B phase load, L3-C phase load, KM1-the first Voltage regulating relay, KM2-the second Voltage regulating relay, KM3-the 3rd Voltage regulating relay, KM4-the 4th Voltage regulating relay, KM5-star is succeeded electrical equipment, KM6-corner connection relay, A-A phase incoming end, B-B phase incoming end, C-C phase incoming end, N-neutral line input, connecing mutually of a-A phase load held, connecing mutually of b-B phase load held, and connecing mutually of c-C phase load held, the neutral end of a1-A phase load, the neutral end of b1-B phase load, the neutral end of c1-C phase load.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
A load control circuit based on autotransformer, comprises control circuit and regulating circuit.Control circuit comprises PLC controller U1 and 6 relays, as shown in Figure 2, relay comprises corner connection relay K M6 and five Voltage regulating relay---the first Voltage regulating relay KM1, the second Voltage regulating relay KM2, the 3rd Voltage regulating relay KM3, the 4th Voltage regulating relay KM4 and the 5th Voltage regulating relay KM5, each relay all has control coil and the first contact, the second contact and San contact.PLC controller U1 is provided with two power ends, 3 inputs and 6 outputs, two power ends of PLC controller U1 connect respectively A phase input and neutral line input N, 6 outputs of PLC controller are respectively by corner connection relay K M6, the first Voltage regulating relay KM1, the second Voltage regulating relay KM2, the 3rd Voltage regulating relay KM3, the control coil of the 4th Voltage regulating relay KM4 and the 5th Voltage regulating relay KM5 is connected to neutral line input N, 3 inputs connect respectively light sensation transducer, driving transducer and voltage sensor, PLC controller U1 can be according to the feedback information of each transducer receiving, control load lamp produces different brightness or carries out switching manipulation.
As shown in Figure 1, regulating circuit comprises load and coupling transformer, and load comprises A phase load L1, B phase load L2 and C phase load L3, and A phase load L1, B phase load L2 and C phase load L3 can be high-voltage gas discharging lights, also can be other lighting loads, can be also non-lighting load.The connecing of A phase load held between the neutral end c1 of a and C phase load mutually, the neutral end a1 of A phase load and B phase load connect hold mutually between b, the connecing to hold mutually and be in series with respectively corner connection relay K M6San Ge contact between c of the neutral end b1 of B phase load and C phase load.When corner connection relay K M6 contact KM6_1, KM6_2 and the equal closure of KM6_3, threephase load is with the form access electrical network of corner connection, the line voltage that the voltage at every phase load two ends is electrical network, now requires each holding contact off-state of the first Voltage regulating relay KM1, the second Voltage regulating relay KM2, the 3rd Voltage regulating relay KM3, the 4th Voltage regulating relay KM4 and the 5th Voltage regulating relay KM5.
3-phase autotransformer is provided with three secondary coils that contain five taps, be respectively secondary coil Ta, secondary coil Tb and secondary coil Tc, secondary coil Ta two ends connect respectively A phase input and neutral line input, four taps of Ta are respectively by the first contact KM1_1 of the first Voltage regulating relay KM1, the first contact KM2_1 of the second Voltage regulating relay KM2, the first contact KM3_1 of the 3rd Voltage regulating relay KM3, the first contact KM4_1 of the 4th Voltage regulating relay KM4, the first contact KM5_1 of the 5th Voltage regulating relay KM5 is connected to connecing of A phase load and holds mutually a, secondary coil Tb two ends connect respectively B phase input and neutral line input, four taps of Tb are respectively by the second contact KM1_2 of the first Voltage regulating relay KM1, the second contact KM2_2 of the second Voltage regulating relay KM2, the second contact KM3_2 of the 3rd Voltage regulating relay KM3, the second contact KM4_2 of the 4th Voltage regulating relay KM4, the second contact KM5_2 of the 5th Voltage regulating relay KM5 is connected to connecing of B phase load and holds mutually b, secondary coil Tc two ends connect respectively C phase input and neutral line input, four taps of Tc are respectively by the San contact KM1_3 of the first Voltage regulating relay KM1, the first contact KM2_3 of the second Voltage regulating relay KM2, the first contact KM3_3 of the 3rd Voltage regulating relay KM3, the first contact KM4_3 of the 4th Voltage regulating relay KM4, the San contact KM5_3 of the 5th Voltage regulating relay KM5 is connected to connecing of C phase load and holds mutually c.Each different tap has different secondary voltages, therefore by different tap access loads, and voltage that also just can control load two ends.These five groups of switches can only have one group of switch closed, and when having one group of switch closed, other switches will be in off-state.Therefore, in controller, facing to four groups of control switchs, realize blocking function,, when one group of switch is closed, other switches cannot be closed.
During use, when load is high-voltage gas discharging light, connected mode by transformation load or select different secondary coil taps, not only can be when line voltage be normal, by reducing high-voltage gas discharging light both end voltage, reach energy-conservation object, also can be when line voltage be lower, rising high-voltage gas discharging light both end voltage, normally starts high-voltage gas discharging light or increases the lumen of high-voltage gas discharging light.Equally, be also applicable to other loads.
Above embodiment is only explanation technological thought of the present utility model; can not limit protection range of the present utility model with this; every technological thought according to the utility model proposes, any change of doing on technical scheme basis, within all falling into protection range of the present utility model.
Claims (5)
1. the threephase load control circuit that can boost, it is characterized in that: comprise control circuit and regulating circuit, described control circuit comprises PLC controller and several relays, relay comprises a corner connection relay and several Voltage regulating relay, each relay all comprises control coil and the first contact, the second contact and San contact, described PLC controller is provided with two power ends, several inputs and several outputs, two power ends of PLC controller connect respectively A phase incoming end and neutral line input, each output of PLC controller is connected to neutral line input by the control coil of corner connection relay Voltage regulating relay respectively,
Described regulating circuit comprises load and coupling transformer, described load comprises A phase load, B phase load and C phase load, described 3-phase autotransformer is provided with three secondary coils that contain several taps, be respectively the secondary coil Ta that holds mutually a and neutral line input that connects that connects A phase load, connect secondary coil Tb that connecing of B phase load hold b and neutral line input mutually and the secondary coil Tc that is connected connecing of C phase load and holds mutually c and neutral line input, the number of taps of each secondary coil is consistent with the quantity of Voltage regulating relay, the tap of secondary coil Ta is connected in series to respectively the neutral end a1 of A phase load by the first contact of each Voltage regulating relay, the tap of secondary coil Tb is connected in series to respectively the neutral end b1 of B phase load by the second contact of each Voltage regulating relay, the tap of secondary coil Tc is connected in series to respectively the neutral end c1 of C phase load by the San contact of each Voltage regulating relay,
The connecing of A phase load held between the neutral end c1 of a and C phase load mutually, the neutral end a1 of A phase load and B phase load connect hold mutually between b, neutral end b1 and the connecing of C phase load of B phase load hold the San Ge contact that is in series with respectively corner connection relay between c mutually.
2. the threephase load control circuit that can boost according to claim 1, is characterized in that: the end mutually that connects of end, B phase load mutually that connects of described A phase load holds with connecing of C phase load A phase incoming end, B phase incoming end and the C phase incoming end that is connected three-phase alternating current by control the master switch QF of three-phase break-make simultaneously mutually.
3. the threephase load control circuit that can boost according to claim 1, is characterized in that: also comprise light sensation transducer, described light sensation transducer is electrically connected to one of them input of PLC controller.
4. the threephase load control circuit that can boost according to claim 1, is characterized in that: also comprise voltage sensor, described voltage sensor is electrically connected to one of them input of PLC controller.
5. the threephase load control circuit that can boost according to claim 1, is characterized in that: also comprise driving transducer, described driving transducer is electrically connected to one of them input of PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320498464.0U CN203399383U (en) | 2013-08-15 | 2013-08-15 | Three-phase load control circuit capable of boosting voltage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320498464.0U CN203399383U (en) | 2013-08-15 | 2013-08-15 | Three-phase load control circuit capable of boosting voltage |
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| CN203399383U true CN203399383U (en) | 2014-01-15 |
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| CN201320498464.0U Withdrawn - After Issue CN203399383U (en) | 2013-08-15 | 2013-08-15 | Three-phase load control circuit capable of boosting voltage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103476192A (en) * | 2013-08-15 | 2013-12-25 | 杭州碧创科技有限公司 | Three-phase load control circuit capable of boosting voltage |
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2013
- 2013-08-15 CN CN201320498464.0U patent/CN203399383U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103476192A (en) * | 2013-08-15 | 2013-12-25 | 杭州碧创科技有限公司 | Three-phase load control circuit capable of boosting voltage |
| CN103476192B (en) * | 2013-08-15 | 2015-04-15 | 杭州碧创科技有限公司 | Three-phase load control circuit capable of boosting voltage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NINGBO GREENTECH ENERGY SAVING TECHNOLOGY CO., LTD Free format text: FORMER OWNER: HANGZHOU GREENTECH INNOVATION CO., LTD. Effective date: 20141118 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 315800 HANGZHOU, ZHEJIANG PROVINCE TO: 315800 NINGBO, ZHEJIANG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20141118 Address after: 107 room 4, building 7, No. 315800, West Pioneer Road, Ningbo, Zhejiang Patentee after: Ningbo Greentech Energy-Saving Technology Co., Ltd. Address before: 315800 No. 60 stay Road, Xihu District, Zhejiang, Hangzhou Patentee before: Hangzhou Greentech Innovation Co., Ltd. |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20140115 Effective date of abandoning: 20150415 |
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| RGAV | Abandon patent right to avoid regrant |