CN201726153U - System capable of feeding back LED load electric energy to grid - Google Patents
System capable of feeding back LED load electric energy to grid Download PDFInfo
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- CN201726153U CN201726153U CN2010201802651U CN201020180265U CN201726153U CN 201726153 U CN201726153 U CN 201726153U CN 2010201802651 U CN2010201802651 U CN 2010201802651U CN 201020180265 U CN201020180265 U CN 201020180265U CN 201726153 U CN201726153 U CN 201726153U
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- led
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- microprocessor controls
- led load
- electric energy
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Abstract
The utility model discloses a system capable of feeding back LED load electric energy to a grid. The system comprises an LED power supply which is connected with a mains supply network. The LED power supply is connected with a microcontroller-controlled LED load characteristics DC/DC change simulating module. The microcontroller-controlled LED load characteristics DC/DC change simulating module is connected with a microcontroller-controlled PWM modulation active grid connection inverting module. The microcontroller-controlled PWM modulation active grid connection inverting module is connected with the mains supply network. A voltage detection module is connected between the LED power supply and the microcontroller-controlled LED load characteristics DC/DC change simulating module. A mains supply network phase detection module is connected between the microcontroller-controlled PWM modulation active grid connection inverting module and the mains supply network. The system of the utility model can simulate LED load characteristics and can effectively feed back the electric energy loaded by the LED power supply to the mains supply network, and thereby the effect of energy saving is realized.
Description
Technical field
The utility model relate to a kind of can be with the system of the electric energy loaded feedback grid of LED.
Background technology
Must be in the production process of LED through test repeatedly, whole process need through fully loaded repeatedly test just can finish, during this time in test process, waste energy, increased production cost, various countries LED production industry for this reason is for energy recovery is utilized problem, and made various designs, but also there is not a cover successful design system till now.
The utility model content
For overcoming deficiency of the prior art, the purpose of this utility model be to provide a kind of can be with the system of the electric energy loaded feedback grid of LED, this system can simulate the LED load characteristic and will be thus draw the efficient feedback of electric energy of carrying to return electricity network from the LED power supply, from and can realize effect of saving energy.
For solving the problems of the technologies described above, realize above-mentioned technique effect, the utility model has adopted following technical scheme:
A kind of can be with the system of the electric energy loaded feedback grid of LED, comprise electricity network, comprise that also one connects the LED power supply of described electricity network, described LED power supply connects microprocessor controls simulation LED load characteristic DC/DC and changes module, described microcontroller simulation LED load characteristic DC/DC variation module connects a microprocessor controls PWM and modulates active parallel network reverse module, and described microprocessor controls PWM modulates active parallel network reverse module and connects described electricity network; Also be connected with a detecting voltage module between described LED power supply and the microprocessor controls simulation LED load characteristic DC/DC variation module, described microprocessor controls PWM modulates and also is connected with an electricity network detecting phase module between active parallel network reverse module and the electricity network.
Further, the direct current that described microprocessor controls simulation LED load characteristic DC/DC variation module is exported the LED power supply by microprocessor controls is transformed to the direct current of the required amplitude of parallel network reverse, and makes direct current waveform tracking microprocessor controls LED load characteristic.
Preferably, described microprocessor controls simulation LED load characteristic DC/DC changes module (3) when institute's making alive is lower than LED family of power and influence voltage V0, and the electric current that flows through LED can be ignored, and after voltage reached V0, load was rendered as linearity, can equivalence be to decide resistance mode.
Further, described detecting voltage module is sent into microcontroller with the voltage that detects by analog-to-digital conversion, is used to simulate the LED load characteristic.
Further, described microprocessor controls PWM modulates active parallel network reverse module (4) and passes through microprocessor controls, the direct current that prime DC/DC conversion is next, it is opposite with the utility grid voltage that detects to stagnate by PWM four-quadrant pulsewidth current transformer technology, transient current that ring control technology or frequency multiplication SPWM technology are transformed to current phase, and power factor is connected to the grid for-1 alternating current.
The beneficial effects of the utility model are: PWM control isolation boosting or non-isolation BOOST boost to the direct current quasi-position that can satisfy the required modulation ratio of back level inversion.Microcontroller to realize closed loop voltage negative feedback, will draw the efficient feedback of electric energy of carrying to return electricity network from the LED power supply according to the duty ratio driving power switch of target voltage and the difference control PWM ripple of actual measurement voltage thus, from and can realize effect of saving energy.
The utility model is described in more detail below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is a system principle diagram of the present utility model.
Fig. 2 is a LED load characteristic schematic diagram of the present utility model.
Number in the figure explanation: 1. electricity network, the 2.LED power supply, 3. microprocessor controls simulation LED load characteristic DC/DC changes module, and 4. microprocessor controls PWM modulates active parallel network reverse module, 5. detecting voltage module, 6. electricity network detecting phase module.
Embodiment
See also shown in Figure 1, a kind of can be with the system of the electric energy loaded feedback grid of LED, comprise electricity network 1, comprise that also one connects the LED power supply 2 of described electricity network 1, described LED power supply 2 connects microprocessor controls simulation LED load characteristic DC/DC and changes module 3, described microcontroller simulation LED load characteristic DC/DC changes module 3 connections one microprocessor controls PWM and modulates active parallel network reverse module 4, and described microprocessor controls PWM modulates active parallel network reverse module 4 and connects described electricity network 1; Also be connected with a detecting voltage module 5 between described LED power supply 2 and the microprocessor controls simulation LED load characteristic DC/DC variation module 3, described microprocessor controls PWM modulates and also is connected with an electricity network detecting phase module 6 between active parallel network reverse module 4 and the electricity network 1.
Electricity network 1 is showed the access electrical network that the LED power supply is powered, and can be single-phase or three-phase.LED power supply 2 refers to export LED working direct current electricity and gives LED module electronic equipment powered (as: LED street lamp, billboard power supply adaptor, LED TV Conveter etc.).
Described microprocessor controls simulation LED load characteristic DC/DC changes module 3, utilize PWM four-quadrant pulsewidth current transformer technology, transient current stagnates and encircles control technology, the direct current of LED power supply output is transformed to the direct current of the required amplitude of parallel network reverse by microprocessor controls, and make direct current waveform tracking microprocessor controls the LED load characteristic (when voltage during less than turning-on voltage electric current be zero, voltage greater than turning-on voltage after for deciding resistance mode), the detecting voltage function is sent into microcontroller with the voltage that detects by analog-to-digital conversion, so that simulation LED load characteristic.
The LED load characteristic as shown in Figure 2, when institute's making alive was lower than LED family of power and influence voltage V0, the electric current that flows through LED can be ignored, after voltage reached V0, load was rendered as linearity, can equivalence for deciding resistance mode.PWM control isolation boosting or non-isolation BOOST boost to the direct current quasi-position that can satisfy the required modulation ratio of back level inversion.Microcontroller feeds back to realize the closed loop voltage negative according to the duty ratio driving power switch of target voltage with the difference control PWM ripple of actual measurement voltage.
Microprocessor controls PWM modulates active parallel network reverse module 4, the direct current that comes by microprocessor controls, with prime DC/DC conversion, it is opposite with the utility grid voltage that detects to stagnate by PWM four-quadrant pulsewidth current transformer technology, transient current that ring control technology or frequency multiplication SPWM technology are transformed to current phase, and power factor is connected to the grid for-1 alternating current.
Claims (5)
1. an energy is with the system of the electric energy loaded feedback grid of LED, comprise electricity network (1), it is characterized in that: comprise that also one connects the LED power supply (2) of described electricity network (1), described LED power supply (2) connects microprocessor controls simulation LED load characteristic DC/DC and changes module (3), described microcontroller simulation LED load characteristic DC/DC changes module (3) connection one microprocessor controls PWM and modulates active parallel network reverse module (4), and described microprocessor controls PWM modulates active parallel network reverse module (4) and connects described electricity network (1); Also be connected with a detecting voltage module (5) between described LED power supply (2) and the microprocessor controls simulation LED load characteristic DC/DC variation module (3), described microprocessor controls PWM modulates and also is connected with an electricity network detecting phase module (6) between active parallel network reverse module (4) and the electricity network (1).
2. according to claim 1 can be with the system of the electric energy loaded feedback grid of LED, it is characterized in that: the direct current that described microprocessor controls simulation LED load characteristic DC/DC variation module (3) is exported LED power supply (2) by microprocessor controls is transformed to the direct current of the required amplitude of parallel network reverse, and makes direct current waveform tracking microprocessor controls LED load characteristic.
3. according to claim 2 can be with the system of the electric energy loaded feedback grid of LED, it is characterized in that: described microprocessor controls simulation LED load characteristic DC/DC changes module (3) when institute's making alive is lower than LED family of power and influence voltage V0, the electric current that flows through LED can be ignored, after voltage reaches V0, load is rendered as linearity, can equivalence be to decide resistance mode.
4. the according to claim 1 system of the electric energy loaded feedback grid of LED can being is characterized in that: described detecting voltage module (5) is sent into microcontroller with the voltage that detects by analog-to-digital conversion, is used to simulate the LED load characteristic.
5. according to claim 1 can be with the system of the electric energy loaded feedback grid of LED, it is characterized in that: described microprocessor controls PWM modulates active parallel network reverse module (4) and passes through microprocessor controls, the direct current that prime DC/DC conversion is next, it is opposite with the utility grid voltage that detects to stagnate by PWM four-quadrant pulsewidth current transformer technology, transient current that ring control technology or frequency multiplication SPWM technology are transformed to current phase, and power factor is connected to the grid for-1 alternating current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201802651U CN201726153U (en) | 2010-05-06 | 2010-05-06 | System capable of feeding back LED load electric energy to grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201802651U CN201726153U (en) | 2010-05-06 | 2010-05-06 | System capable of feeding back LED load electric energy to grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201726153U true CN201726153U (en) | 2011-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201802651U Expired - Fee Related CN201726153U (en) | 2010-05-06 | 2010-05-06 | System capable of feeding back LED load electric energy to grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201726153U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101826735A (en) * | 2010-05-06 | 2010-09-08 | 苏州元泰自动化科技有限公司 | System capable of feeding LED load power energy back to commercial power network |
-
2010
- 2010-05-06 CN CN2010201802651U patent/CN201726153U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101826735A (en) * | 2010-05-06 | 2010-09-08 | 苏州元泰自动化科技有限公司 | System capable of feeding LED load power energy back to commercial power network |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110126 Termination date: 20120506 |