CN104039050B - A kind of HVDC LED lamp and solar illuminating system - Google Patents
A kind of HVDC LED lamp and solar illuminating system Download PDFInfo
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- CN104039050B CN104039050B CN201410268299.9A CN201410268299A CN104039050B CN 104039050 B CN104039050 B CN 104039050B CN 201410268299 A CN201410268299 A CN 201410268299A CN 104039050 B CN104039050 B CN 104039050B
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- 238000005286 illumination Methods 0.000 description 20
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- 238000006243 chemical reaction Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 3
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- BYACHAOCSIPLCM-UHFFFAOYSA-N 2-[2-[bis(2-hydroxyethyl)amino]ethyl-(2-hydroxyethyl)amino]ethanol Chemical compound OCCN(CCO)CCN(CCO)CCO BYACHAOCSIPLCM-UHFFFAOYSA-N 0.000 description 1
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Abstract
The present invention relates to lighting engineering, a kind of HVDC LED lamp and solar illuminating system are disclosed.In the present invention, high direct voltage solar cell, solar control unit MPPT, utility grid, AC DC power module and HVDC LED lamp are included；Wherein, HVDC LED lamp includes DC constant-current driven chip and at least one LED lamp bead；DC constant-current driven chip is connected with LED lamp bead；High direct voltage solar cell is through the DC port with MPPT and after connecing successively with AC DC power module, HVDC LED lamp and connects；The AC port of AC DC power module is connected with utility grid.Because DC constant-current driven chip service life is long so that the life-span of HVDC LED lamp is extended；Meanwhile, the ac high-voltage electric signal of civil power is converted to high direct voltage electric signal by AC DC power module, it is to avoid the problem of low-voltage, high-current line loss and power attenuation, improves energy utilization rate.
Description
Technical field
The present invention relates to lighting engineering, more particularly to a kind of HVDC LED lamp and illuminator.
Background technology
At present, solar lighting mode has two kinds：Solar energy off-network independent illumination mode (such as solar street light) and the sun
Can synchronization AC powered lighting mode.
For solar energy off-network independent illumination, as shown in Figure 1, it is necessary to configure battery, especially similar street lamp is scattered to be shone
Bright mode, the management of battery and maintenance difficulties are big.Also, general illumination is used under non-illuminated conditions, and illumination time period is main
By storage battery power supply.Due to accumulator cell charging and discharging short life, after battery malfunction, there is the system failure and battery secondary pollution
Problem.Meanwhile, night illumination exactly city low power consumption, using solar energy off-network independent illumination mode, exacerbates urban electricity supply
Peak valley contradiction, lack popularity value.
For the illumination of solar grid-connected Alternating Current Power Supply, as shown in Fig. 2 solar DC need to pass through DC (Direct
Current, direct current)-AC (Alternating Current, alternating current) inverter is converted into exchange, then in LED lamp
AC-DC drivers be converted into direct current and powered to LED.In the manner, there are 2 times solar powered power conversions, system
Efficiency is reduced, and energy-saving effect is had a greatly reduced quality.Meanwhile, the AC-DC drivers in LED lamp inevitably use electrochemical capacitor,
Life-span is general not over 2 years, it is impossible to real to embody advantage of the LED life-spans higher than 5 years itself.Especially for some special lightings
Occasion：High pendant lamp of street lamp, Tunnel Lamp, large space etc., are compared with traditional lighting, and maintenance cost is not reduced significantly.
However, using the solar grid-connected Alternating Current Power Supply of high-voltage LED, as shown in Figure 3, although can cancel in LED lamp
AC-DC drivers, but rectifier must be included, to rectification.Although solar powered only exist power conversion of DC-AC,
System effectiveness is high, and the life-span reaches or the life-span close to LED in itself, but which has ac stroboflash, in some special lightings
Close using being restricted (such as road lighting), illumination is lower than direct current supply by 15%.Moreover, alternating current and LED lamp non-isolated, are deposited
In serious potential safety hazard.
Meanwhile, solar illuminating system can also use off-network independent illumination and mains hybrid mode, as shown in Figure 4.City
Electricity is depressurized to solar voltage by AC-DC, is attempted by solar DC bus and is powered to LED, but which has low pressure
High current is powered the line problem of pressure drop caused, if solar panels are concatenated into high direct voltage, as shown in figure 5, then LED lamp is still
Need to possess DC-DC decompression driving power supplies, then be asked there are still the loss in efficiency of 2 power conversions and with the life-span of electrochemical capacitor
Topic.
The content of the invention
It is an object of the invention to provide a kind of HVDC LED lamp and solar illuminating system so that HVDC
The LED lamp life-span is extended；Meanwhile, when solar cell and civil power are grid-connected, it is to avoid civil power is low when being powered for illuminator
The problem of pressing high current line loss and power loss, improves the utilization rate of the energy.
In order to solve the above technical problems, the invention provides a kind of solar illuminating system, comprising：High direct voltage solar energy
Battery, solar control unit MPPT, utility grid, AC-DC power supply module and HVDC LED lamp；
Wherein, the HVDC LED lamp comprising DC-to-dc constant-current driven chip (Integrated Circuit,
Abbreviation IC) and at least one LED lamp bead；The DC-to-dc constant-current driven chip is connected with the LED lamp bead；
The high direct voltage solar cell through with the MPPT and after connecing successively with the AC-DC power supply module
DC port, the HVDC LED lamp simultaneously connect；The AC port of the AC-DC power supply module and civil power electricity
Net is connected.
Present invention also offers a kind of HVDC LED lamp, comprising：DC-to-dc constant-current driven chip and at least one
Individual LED lamp bead；
The DC-to-dc constant-current driven chip is connected with the LED lamp bead.
Embodiment of the present invention in terms of existing technologies, high direct voltage solar cell and civil power it is grid-connected when, be
Stable high direct voltage electric signal is exported under MPPT control using high direct voltage solar cell, HVDC is directly driven
LED lamp illumination；Or, the ac signal of utility grid output is converted to direct current telecommunications by AC-DC power supply module
Number, directly drive HVDC LED lamp illumination；Wherein, HVDC LED lamp includes DC-to-dc constant-current driven chip
With at least one LED lamp bead.Specifically, high direct voltage solar cell through with MPPT and after connecing successively with AC-DC electricity
The DC port of source module, HVDC LED lamp simultaneously connect；The AC port of AC-DC power supply module and utility grid phase
Even；DC-to-dc constant-current driven chip is connected with LED lamp bead.HVDC LED lamp can be permanent by built-in DC-to-dc
Driving chip is flowed directly using the driving LED lamp bead illumination of high direct voltage electric signal, because DC-to-dc constant-current driven chip is used
Long lifespan so that advantage of the life-span of LED lamp bead higher than 5 years is played, and then the life-span of HVDC LED lamp is obtained
To extend.Moreover, when solar cell and grid-connected civil power, the exchange for being exported utility grid due to AC-DC power supply module
High-voltage signal is converted into high direct voltage electric signal, directly drives HVDC LED lamp illumination, not only avoids city
Electricity for illuminator when powering the problem of low-voltage, high-current line loss, moreover, reducing the number of times of power conversion, it is to avoid power damage
The problem of mistake, improve the utilization ratio of the energy.
In addition, also including two-way combining inverter；
Wherein, the two-way combining inverter includes intelligent switch；
The exchange end of the two-way combining inverter is connected through the intelligent switch with the utility grid, DC terminal and institute
State high direct voltage solar cell and connect.
Intelligent switch is closed when solar energy is unnecessary, so, and two-way combining inverter can be by high direct voltage solar-electricity
The high direct voltage electric signal of pond output is converted to ac high-voltage electric signal, and exports to utility grid, uses, makes for AC load
The utilization rate of solar energy must be improved.
In addition, the AC-DC power supply module includes at least two AC-DC converters；
The AC-DC converter simultaneously successively and connects.
Wherein, the voltage of the AC-DC converter is less than the voltage of the high direct voltage solar cell.
Because the voltage of AC-DC converter is less than the voltage of high direct voltage solar cell, it is ensured that in solar charging
High direct voltage solar cell is preferentially powered to HVDC LED lamp when sufficient.
In addition, the HVDC LED lamp also includes rectifier；
The rectifier is connected with the DC-to-dc constant-current driven chip.
Because rectifier is for anti-reverse, HVDC LED lamp can be avoided to be damaged in reversal connection, protection is played
Effect.
In addition, the HVDC LED lamp includes a LED lamp bead；
The LED lamp bead is high-voltage LED lamp bead.
Because high-voltage LED lamp bead is existing ripe device, it is ensured that the feasibility of embodiment of the present invention.
In addition, the HVDC LED lamp includes more than one LED lamp bead；
The LED lamp bead is low-voltage LED lamp bead, and the low-voltage LED lamp bead is sequentially connected in series.
More than one lower voltage LED lamp bead string is connected into high-voltage LED group string, is illuminated under the driving of high direct voltage electric signal,
It ensure that the diversity of embodiment of the present invention.
In addition, also including battery；
The battery is through the MPPT and the high direct voltage solar cell and connects.When solar energy is not enough, electric power storage
Pond can provide standby emergency lighting.
In addition, the MPPT is additionally operable to battery Charge Management.
When high direct voltage solar cell charges to battery, MPPT also carries out Charge Management to battery, carries
High recharge efficiency.
Brief description of the drawings
Fig. 1 is according to solar energy off-network independent lighting system schematic diagram of the prior art；
Fig. 2 is according to solar grid-connected Alternating Current Power Supply illuminator schematic diagram of the prior art；
Fig. 3 is according to the solar grid-connected Alternating Current Power Supply illuminator schematic diagram of high-voltage LED of the prior art；
Fig. 4 is according to mains hybrid solar energy low pressure direct current powered lighting system schematic diagram of the prior art；
Fig. 5 is according to mains hybrid solar-powered high-pressure direct current powered lighting system schematic diagram of the prior art；
Fig. 6 is the schematic diagram of the solar illuminating system according to first embodiment of the invention；
Fig. 7 is the schematic diagram of the solar illuminating system according to third embodiment of the invention；
Fig. 8 is the schematic diagram of the solar illuminating system according to four embodiment of the invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with each reality of the accompanying drawing to the present invention
The mode of applying is explained in detail.However, it will be understood by those skilled in the art that in each embodiment of the invention,
In order that reader more fully understands the application and proposes many ins and outs.But, even if without these ins and outs and base
Many variations and modification in following embodiment, can also realize each claim of the application technical side claimed
Case.
The first embodiment of the present invention is related to a kind of solar illuminating system, it is specific as shown in fig. 6, comprising：Direct current is high
Press solar cell, solar control unit MPPT, utility grid, AC-DC power supply module and HVDC LED lamp.
Wherein, HVDC LED lamp includes DC-to-dc constant-current driven chip and at least one LED lamp bead；Direct current-
Direct current constant-current driven chip is connected with LED lamp bead.In the present embodiment, HVDC LED lamp includes a LED lamp bead,
The LED lamp bead is high-voltage LED lamp bead.Because high-voltage LED lamp bead is existing ripe device, it is ensured that embodiment of the present invention
Feasibility.
As shown in fig. 6, high direct voltage solar cell is through straight with AC-DC power supply module successively with MPPT and after connecing
Flow port, HVDC LED lamp simultaneously connect；The AC port of AC-DC power supply module is connected with utility grid.Wherein, directly
Stream High-Voltage Solar Array is in series by solar panel (Photovoltaic, abbreviation PV), and forms corresponding high pressure.
When solar energy is abundant, high direct voltage solar cell is operated in maximum functional point under MPPT control, and defeated
Go out high direct voltage electric signal, directly drive HVDC LED lamp illumination.Due to straight built in HVDC LED lamp illumination
Stream-direct current constant-current driven chip service life is long so that advantage of the life-span of LED lamp bead higher than 5 years is played, and then is caused
The life-span of HVDC LED lamp is extended.
Meanwhile, solar cell is grid-connected with civil power, is HVDC LED lamp by utility grid when solar energy is not enough
Power supply.The ac high-voltage electric signal that utility grid is exported is converted to high direct voltage electric signal by AC-DC power supply module, directly
Drive HVDC LED lamp illumination.Wherein, AC-DC power supply module includes at least two AC-DC converters, and
All AC-DC converters successively and connect, to give HVDC LED lamp centrally connected power supply；Meanwhile, AC-DC converter
Voltage be less than the voltage of high direct voltage solar cell, to ensure that high direct voltage solar cell is preferential when solar energy is sufficient
Powered to HVDC LED lamp.Because the ac high-voltage electric signal that AC-DC power supply module exports utility grid is changed
Into high direct voltage electric signal, HVDC LED lamp illumination is directly driven, is not only avoided low when civil power is powered for illuminator
The problem of pressing high current line loss, moreover, reducing the number of times of power conversion, it is to avoid the problem of power loss, improves the energy
Utilization ratio.
Compared with prior art, HVDC LED lamp is directly utilized by built-in DC-to-dc constant-current driven chip
High direct voltage electric signal driving LED lamp bead illumination, because DC-to-dc constant-current driven chip service life is long so that LED lamp bead
Life-span played higher than the advantage of 5 years, and then make it that the life-span of HVDC LED lamp is extended.Moreover, solar energy
Battery is grid-connected with civil power, because the ac high-voltage electric signal that utility grid is exported is converted into direct current by AC-DC power supply module
High-voltage signal, directly drives HVDC LED lamp illumination, not only avoids low when civil power is powered for illuminator
The problem of pressing high current line loss, moreover, reducing the number of times of power conversion, it is to avoid the problem of power loss, improves the energy
Utilization ratio.
It is noted that each module involved in present embodiment is logic module, and in actual applications, one
Individual logic unit can be a part for a physical location or a physical location, can also be with multiple physics lists
The combination of member is realized.In addition, will not be with solving institute of the present invention in the innovative part in order to protrude the present invention, present embodiment
The technical problem relation of proposition less close unit is introduced, but this be not intended that in present embodiment be not present it is other single
Member.
Second embodiment of the invention is related to a kind of solar illuminating system.Second embodiment is big with first embodiment
Cause is identical, is in place of main difference：In the first embodiment of the present invention, HVDC LED lamp includes a high pressure
LED lamp bead, it is ensured that the feasibility of embodiment of the present invention；And in this second embodiment, HVDC LED lamp includes one
Individual above LED lamp bead；All LED lamp beads are low-voltage LED lamp bead, and all low-voltage LED lamp beads are sequentially connected in series into high-voltage LED group
String, it is ensured that the diversity of embodiment of the present invention.
Third embodiment of the present invention is related to a kind of solar illuminating system.Second embodiment is in first embodiment
On the basis of made further improvement, mainly the improvement is that：In second embodiment of the invention, HVDC LED
Tool also includes rectifier, specific as shown in Figure 7.Rectifier can avoid HVDC LED lamp in reversal connection for anti-reverse
It is damaged, plays a protective role.
As shown in fig. 7, in the present embodiment, rectifier uses full-bridge rectifier, it is therefore intended that anti-reverse.Due to rectification
Device can be with anti-reverse, it is to avoid HVDC LED lamp is damaged in reversal connection, is played a protective role.It is anti-using rectifier
Reversal connection is a kind of anti-reverse embodiment, it would however also be possible to employ the anti-reverse mode of other modes, the invention is not restricted to
This mode.
The 4th embodiment of the present invention is related to a kind of solar illuminating system.4th embodiment is in first embodiment
On the basis of made further improvement, mainly the improvement is that：In four embodiment of the invention, also comprising two-way grid-connected
Inverter, wherein, two-way combining inverter includes intelligent switch, specific as shown in Figure 8.Intelligent switch is closed when solar energy is unnecessary
Close, so, the high direct voltage electric signal that high direct voltage solar cell is exported is converted to ac high-voltage by two-way combining inverter
Electric signal, and export to utility grid, used for AC load so that improve the utilization rate of solar energy.
As shown in figure 8, the exchange end of two-way combining inverter is connected through intelligent switch with utility grid, DC terminal and direct current
High-Voltage Solar Array simultaneously connects.
In the present embodiment, intelligent switch is monitored in real time to high direct voltage solar cell, and in solar energy foot
To drive HVDC LED lamp illumination and close when having residue.After intelligent switch closure, high direct voltage solar cell will be many
Remaining energy is exported to utility grid through two-way combining inverter, so that AC load is used.Specifically, two-way parallel network reverse
The high direct voltage electric signal that high direct voltage solar cell is exported is converted to ac high-voltage electric signal by device, and is exported to civil power electricity
Net, is used for AC load so that improve the utilization rate of solar energy.Meanwhile, in this process, it only there occurs a power
Conversion, it is to avoid the problem of the energy utilization rate caused by power is changed is low.
The 5th embodiment of the present invention is related to a kind of solar illuminating system.5th embodiment is in first embodiment
On the basis of made further improvement, mainly the improvement is that：In the 5th embodiment, also comprising battery, meanwhile,
MPPT is additionally operable to battery Charge Management.When solar energy is not enough, battery can provide standby emergency lighting.
In the present embodiment, battery is through MPPT and high direct voltage solar cell and connects.
When high direct voltage solar cell charges to battery, MPPT also carries out Charge Management to battery, carries
High recharge efficiency.
The 6th embodiment of the present invention is related to a kind of HVDC LED lamp, comprising：DC-to-dc constant current drives core
Piece and at least one LED lamp bead.
Wherein, DC-to-dc constant-current driven chip is connected with LED lamp bead.In the present embodiment, HVDC LED
Tool includes a LED lamp bead, and the LED lamp bead is high-voltage LED lamp bead.Because high-voltage LED lamp bead is existing ripe device, it is ensured that
The feasibility of embodiment of the present invention.
Because DC-to-dc constant-current driven chip does not use electrochemical capacitor, and service life is long so that the longevity of LED lamp bead
Advantage of the life higher than 5 years is played, and then make it that the life-span of HVDC LED lamp is extended.
The 7th embodiment of the present invention is related to a kind of HVDC LED lamp.7th embodiment and the 6th embodiment party
Formula is roughly the same, is in place of main difference：In the 6th embodiment, HVDC LED lamp includes a LED lamp bead,
The LED lamp bead is high-voltage LED lamp bead；And in the 7th embodiment, HVDC LED lamp includes more than one LED lamp bead,
All LED lamp beads are low-voltage LED lamp bead, and all low-voltage LED lamp beads are sequentially connected in series into high-voltage LED group string, it is ensured that this hair
The diversity of bright embodiment.
The 8th embodiment of the present invention is related to a kind of HVDC LED lamp.8th embodiment is in the 6th embodiment party
Further improvement is made on the basis of formula, has mainly theed improvement is that：In the 8th embodiment, HVDC LED lamp is also
Comprising rectifier, rectifier is connected with DC-to-dc constant-current driven chip.Due to rectifier can with anti-reverse, this avoid
HVDC LED lamp is damaged in reversal connection, is played a protective role.
It will be understood by those skilled in the art that the respective embodiments described above are to realize the specific embodiment of the present invention,
And in actual applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.
Claims (9)
1. a kind of solar illuminating system, it is characterised in that include：High direct voltage solar cell, solar control unit
MPPT, utility grid, AC-DC power supply module and HVDC LED lamp；
Wherein, the HVDC LED lamp includes DC-to-dc constant-current driven chip and at least one LED lamp bead；It is described straight
Stream-direct current constant-current driven chip is connected with the LED lamp bead；
The high direct voltage solar cell is through the direct current with the MPPT and after connecing successively with the AC-DC power supply module
Port, the HVDC LED lamp simultaneously connect；The AC port of the AC-DC power supply module and the utility grid phase
Connect, and voltage of the voltage less than the high direct voltage solar cell of the AC-DC power supply module.
2. solar illuminating system according to claim 1, it is characterised in that also comprising two-way combining inverter；
Wherein, the two-way combining inverter includes intelligent switch；
The exchange end of the two-way combining inverter is connected through the intelligent switch with the utility grid, DC terminal with it is described straight
Stream High-Voltage Solar Array simultaneously connects.
3. solar illuminating system according to claim 1, it is characterised in that the HVDC LED lamp is also included
Rectifier；
The rectifier is connected with the DC-to-dc constant-current driven chip.
4. solar illuminating system according to claim 1, it is characterised in that the HVDC LED lamp includes one
Individual LED lamp bead；
The LED lamp bead is high-voltage LED lamp bead.
5. solar illuminating system according to claim 1, it is characterised in that the HVDC LED lamp includes one
Individual above LED lamp bead；
The LED lamp bead is low-voltage LED lamp bead, and the low-voltage LED lamp bead is sequentially connected in series.
6. solar illuminating system according to claim 1, it is characterised in that the AC-DC power supply module is included
At least two AC-DC converters；
The AC-DC converter successively and connects.
7. solar illuminating system according to claim 6, it is characterised in that the voltage of the AC-DC converter
Less than the voltage of the high direct voltage solar cell.
8. solar illuminating system according to claim 1, it is characterised in that also comprising battery；
The battery is through the MPPT and the high direct voltage solar cell and connects.
9. solar illuminating system according to claim 8, it is characterised in that the MPPT is additionally operable to battery charging valve
Reason.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410268299.9A CN104039050B (en) | 2013-12-17 | 2014-06-16 | A kind of HVDC LED lamp and solar illuminating system |
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| CN201310697635.7 | 2013-12-17 | ||
| CN201310697635 | 2013-12-17 | ||
| CN201410268299.9A CN104039050B (en) | 2013-12-17 | 2014-06-16 | A kind of HVDC LED lamp and solar illuminating system |
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| CN105262197A (en) * | 2015-11-06 | 2016-01-20 | 柴东澜 | Grid-connected power generation control system for solar street lamp |
| CN110048399A (en) * | 2019-04-29 | 2019-07-23 | 山东三晶照明科技有限公司 | A kind of lighting power supply system and method that tunnel photovoltaic power generation is complementary with direct current supply |
| CN210444538U (en) * | 2019-07-15 | 2020-05-01 | 苏州巨微新能源科技有限公司 | Novel LED power supply circuit capable of realizing no stroboscopic effect |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101262022A (en) * | 2008-04-21 | 2008-09-10 | 四川永祥多晶硅有限公司 | A photoelectrical and photo-thermal utilization system for crystal silicon solar battery component |
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| CN102752913B (en) * | 2012-02-07 | 2015-12-30 | 深圳市比格利电源科技有限公司 | LED drive power and LED illumination lamp |
| CN102635828A (en) * | 2012-03-23 | 2012-08-15 | 珠海市洁源电器有限公司 | Solar LED (light emitting diode) lamp |
| CN102913839B (en) * | 2012-11-02 | 2015-02-25 | 浙江省能源与核技术应用研究院 | Solar power supplied energy-saving illumination system |
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| CN101262022A (en) * | 2008-04-21 | 2008-09-10 | 四川永祥多晶硅有限公司 | A photoelectrical and photo-thermal utilization system for crystal silicon solar battery component |
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