CN102933000A

CN102933000A - Controller for intelligent power grid variable frequency energy-saving street lamp

Info

Publication number: CN102933000A
Application number: CN201210462176XA
Authority: CN
Inventors: 孙一夫; 郭晓桦
Original assignee: ZHANGJIAGANG XINDONGPO GLASS COTTON PRODUCTS FACTORY
Current assignee: ZHANGJIAGANG XINDONGPO GLASS COTTON PRODUCTS FACTORY
Priority date: 2012-11-16
Filing date: 2012-11-16
Publication date: 2013-02-13

Abstract

The invention discloses a controller for an intelligent power grid variable frequency energy-saving street lamp, which comprises an EMI (Electro Magnetic Interference) filtering module, a bridge rectifier, a boost active power factor correction module, a sampling circuit, a pulse generator and driving circuit, a DC/AC (Direct Current/Alternate Current) high frequency converter, an LC (Inductance-Capacitance) resonance circuit and a singlechip. The sampling circuit is used for respectively performing sampling on voltages at both ends of the energy-saving street lamp and a current which flows through the energy-saving street lamp, and transmitting a sampling result to the singlechip; the singlechip is used for controlling the pulse generator, and driving circuit to send a signal to the DC/AC high frequency converter; the DC/AC high frequency converter is used for converting a direct current into a high frequency alternate current under the drive of a high frequency pulse; and by the LC resonance circuit, an instantaneous high voltage is generated, the energy-saving street lamp is lightened and the singlechip regulates the energy-saving street lamp to work under a constant power in each time period according to the sizes of preset powers in different time periods. According to the controller, the energy-saving street lamp is controlled to work under the condition of high frequency, high power factor and constant power by the singlechip and can be intelligently dimmed, so that the energy-saving street lamp is beneficial to the energy saving and the environmental-friendliness.

Description

Intelligent grid energy-saving and frequency-variable street lamp controller

Technical field

The present invention relates to a kind of energy-conserving road lamp controller, relate in particular to a kind of intelligent grid energy-saving and frequency-variable street lamp controller.

Background technology

Along with the development of urbanization, the raising of living standards of the people, the electric energy of city illumination consumption is how much radixes to be increased, and for the call of respective country energy-saving and emission-reduction policy, the concept of intelligent grid more and more obtains everybody approval.Intelligent grid is exactly the intellectuality of electrical network, be also referred to as " electrical network 2.0 ", it is to be based upon on the basis of integrated, high-speed bidirectional communication network, the application of the sensing by the advanced person and measuring technique, advanced equipments technology, advanced control method and advanced DSS technology realizes the target of reliable, the safety, economy of electrical network, efficient, environmental friendliness and use safety.Energy-conserving road lamp as city illumination then is a significant element that forms intelligent grid, the energy-conservation of energy-saving and frequency-variable street lamp is mainly reflected on the controller, the control of using on the market now its overwhelming majority or traditional inductance type ballast, and inductance type ballast exists following shortcomings: 1. power factor is very low, add building-out capacitor, generally also can only reach about 0.85, this makes same power need larger supply electric current, have to increase the capacity of special change (street-lighting transformer), increase the diameter of service cable, cost is increased; 2. inductance type ballast is operated under the mains frequency, must use in a large number silicon steel sheet, and the material of making silicon steel sheet is scarce resource; 3. consumed power increases along with the increase of input voltage, shortens simultaneously the life-span of energy-conserving road lamp; 4. there is not defencive function, in the situation that fluorescent tube open circuit or short circuit easily damage ballast and annex thereof.

Summary of the invention

Technical problem to be solved by this invention is: a kind of intelligent grid energy-saving and frequency-variable street lamp controller is provided, but this controller is operated in high frequency, High Power Factor, permanent power work and intelligent dimming by the Single-chip Controlling energy-conserving road lamp, makes energy-conserving road lamp be conducive to energy-conservation and environmental protection.

For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of intelligent grid energy-saving and frequency-variable street lamp controller, comprise EMI filtration module, bridge rectifier, boost type active power factor correction module, sample circuit, pulse generator and drive circuit, DC/AC high-frequency converter, LC resonant circuit and single-chip microcomputer, EMI filtration module, bridge rectifier, boost type active power factor correction module, DC/AC high-frequency converter connect in turn, and the LC resonant circuit is connected with the energy-conserving road lamp series connection and with the DC/AC high-frequency converter; This sample circuit is sampled and sampled result is passed to single-chip microcomputer to the voltage at energy-conserving road lamp two ends and through the electric current of energy-conserving road lamp respectively, Single-chip Controlling pulse generator and drive circuit send light drive waveforms or the normal operation drive waveforms to the DC/AC high-frequency converter, the direct current of the 400V that this DC/AC high-frequency converter will boost through the boost type active power factor correction module under the driving of high-frequency impulse becomes the alternating current of high frequency, when starting, by the LC resonant circuit, produce instantaneous high pressure, energy-conserving road lamp is lighted, then under the effect of the choking-winding of LC resonant circuit, the current limit that passes through energy-conserving road lamp in allowed limits, make the lamp normal operation, single-chip microcomputer is according to the data of sample circuit Real-time Collection, according to default watt level of different periods adjust energy-conserving road lamp in the permanent power work of day part.

As a kind of preferred scheme, described controller also comprises protective circuit, and above-mentioned sample circuit is delivered to single-chip microcomputer to the data of sampling, and whether single-chip microcomputer judges energy-conserving road lamp in normal operation, and by the protective circuit protection controller.

After having adopted technique scheme, effect of the present invention is: this controller adopts modularized design, uses Single-chip Controlling, thereby has reduced the complexity of products-hardware, has dwindled volume, and Systems balanth and reliability are provided simultaneously; Because the flexibility of software change need not changed under the prerequisite of hardware, makes product can adapt to different clients' various requirement; Because the persevering power of product and dimming function can be controlled flexibly energy-conserving road lamp and move under different period different capacities, energy-saving effect is remarkable.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is the structural representation of the embodiment of the invention;

In the accompanying drawing: the 1.EMI filtration module; 2. bridge rectifier; 3. boost type active power factor correction module; 4.DC/AC high-frequency converter; 5.LC resonant circuit; 6. sample circuit and protective circuit; 7. single-chip microcomputer; 8. pulse generator and drive circuit.

Embodiment

The present invention is described in further detail below by specific embodiment.

As shown in Figure 1, a kind of intelligent grid energy-saving and frequency-variable street lamp controller, comprise EMI filtration module 1, bridge rectifier 2, boost type active power factor correction module 3, sample circuit, pulse generator and drive circuit 8, DC/AC high-frequency converter 4, LC resonant circuit 5 and single-chip microcomputer 7, EMI filtration module 1, bridge rectifier 2, boost type active power factor correction module 3, DC/AC high-frequency converter 4 connect in turn, and LC resonant circuit 5 is connected with the energy-conserving road lamp series connection and with DC/AC high-frequency converter 4; This sample circuit is sampled and sampled result is passed to single-chip microcomputer 7 to the voltage at energy-conserving road lamp two ends and through the electric current of energy-conserving road lamp respectively, single-chip microcomputer 7 clamp-pulse generators and drive circuit 8 send light drive waveforms or the normal operation drive waveforms to the DC/AC high-frequency converter, the direct current of the 400V that this DC/AC high-frequency converter will boost through boost type active power factor correction module 3 under the driving of high-frequency impulse becomes the alternating current of high frequency, when starting, by LC resonant circuit 5, produce instantaneous high pressure, energy-conserving road lamp is lighted, then under the effect of the choking-winding of LC resonant circuit 5, the current limit that passes through energy-conserving road lamp in allowed limits, make the lamp normal operation, single-chip microcomputer 7 is according to the data of sample circuit Real-time Collection, according to default watt level of different periods adjust energy-conserving road lamp in the permanent power work of day part.Described controller also comprises protective circuit, and above-mentioned sample circuit is delivered to single-chip microcomputer 7 to the data of sampling, and single-chip microcomputer 7 judges that energy-conserving road lamp whether in normal operation, determines whether taking safeguard measure according to the result who judges.

EMI filtration module 1 is used for preventing that the high order harmonic component of electrical network from entering product, prevents that the high order harmonic component of product itself from returning electrical network, and pollutes electrical network, makes product meet national safety standard, satisfies corresponding laws and regulations.

Bridge rectifier 2 modules are for the Rectified alternating current that civil power 220V is become about 310V.

Boost type active power factor correction module 3(APFC), is used for the power factor of improving product complete machine, power factor is reached more than 0.98, reduce the power supply burden of electrical network.

Sample circuit and protective circuit 6 for the operating state of sampling energy-conserving road lamp, are delivered to single-chip microcomputer 7 to the data of sampling, and single-chip microcomputer 7 judges that energy-conserving road lamp whether in normal operation, determines whether taking safeguard measure according to the result who judges; If normal operation then according to sampled data, is adjusted the operating frequency of product, and then control the constant of power output, realize permanent power and the intelligent dimming function of product.

Pulse generator and drive circuit 8, single-chip microcomputer 7 is adjusted driving pulse according to sampled data, driving pulse offers the inverter circuit of DC/AC high-frequency converter 4 through isolation, amplification, power tube is operated under the high frequency, thereby make lamp luminous, because lamp is operated under the high frequency, improved about about 10% so luminous efficiency is compared with inductance type ballast, same because of high-frequency, volume and the weight of the choking-winding of LC resonant circuit 5 have also reduced greatly.

DC/AC high-frequency converter 4, under the driving of high-frequency impulse, the direct current of 400V is become the alternating current of high frequency, when starting, by the resonance of choke and resonant capacitance, produce instantaneous high pressure, energy-conserving road lamp is lighted, then under the effect of choking-winding, the current limit that passes through lamp in allowed limits, make the lamp normal operation.

Above-mentioned intelligent dimming refers to that single-chip microcomputer 7 establishes a timer module, the bright intensity of day part, the required energy-conserving road lamp of each highway section traffic information in pre-stored one day twenty four hours, come intelligent control energy-conserving road lamp in day part according to the permanent power light-emitting of predetermined performance number.Such as 6 o'clock to 11 o'clock evening, vehicle flowrate was large, energy-conserving road lamp 100% power work, and 11 to 2:00 AM, energy-conserving road lamp 80% power work, 2:00 AM is to point in mornings 6,50% power work, etc.

The booster type power factor correction module of having chance with can make the power factor of controller reach more than 0.98, thereby reduce the circuit nominal current, reaches the loss that reduces circuit and distribution transforming device active power, reaches energy-conservation purpose, also can reduce distribution transformer; The luminous efficiency of energy-conserving road lamp increases along with the increase of operating frequency, controller is owing to having adopted digital technology, be easy to make energy-conserving road lamp to be operated under the high frequency, consider according to cost-performance, make product work about 50KHz, under the same brightness, power consumption reduces 10%, owing to being operated under the high frequency, the volume of inductance also reduces 80% simultaneously; Because digital controller is sampled to the voltage and current of energy-conserving road lamp, namely power is sampled, and then the power of control lamp is in constant, perhaps can reduce as requested the power of energy-conserving road lamp, thereby overcome the uncontrollable critical defect of inductance type ballast power, inductance type ballast is when midnight, because line voltage raises, when voltage was elevated to 238V, the bulb actual power consumption of 250W can reach 350W, greatly wastes electric energy, the life-span of bulb also can shorten, and digital controller just can overcome this shortcoming fully, thereby realization is significantly energy-conservation, prolongs the life-span of energy-conserving road lamp.

Claims

1. intelligent grid energy-saving and frequency-variable street lamp controller, it is characterized in that: comprise EMI filtration module, bridge rectifier, boost type active power factor correction module, sample circuit, pulse generator and drive circuit, DC/AC high-frequency converter, LC resonant circuit and single-chip microcomputer, EMI filtration module, bridge rectifier, boost type active power factor correction module, DC/AC high-frequency converter connect in turn, and the LC resonant circuit is connected with the energy-conserving road lamp series connection and with the DC/AC high-frequency converter; This sample circuit is sampled and sampled result is passed to single-chip microcomputer to the voltage at energy-conserving road lamp two ends and through the electric current of energy-conserving road lamp respectively, Single-chip Controlling pulse generator and drive circuit send light drive waveforms or the normal operation drive waveforms to the DC/AC high-frequency converter, the direct current of the 400V that this DC/AC high-frequency converter will boost through the boost type active power factor correction module under the driving of high-frequency impulse becomes the alternating current of high frequency, when starting, by the LC resonant circuit, produce instantaneous high pressure, energy-conserving road lamp is lighted, then under the effect of the choking-winding of LC resonant circuit, the current limit that passes through energy-conserving road lamp in allowed limits, make the lamp normal operation, single-chip microcomputer is according to the data of sample circuit Real-time Collection, according to default watt level of different periods adjust energy-conserving road lamp in the permanent power work of day part.

2. intelligent grid energy-saving and frequency-variable street lamp controller as claimed in claim 1; it is characterized in that: described controller also comprises protective circuit; above-mentioned sample circuit is delivered to single-chip microcomputer to the data of sampling, and whether single-chip microcomputer judges energy-conserving road lamp in normal operation, and by the protective circuit protection controller.