CN101826735A - System capable of feeding LED load power energy back to commercial power network - Google Patents
System capable of feeding LED load power energy back to commercial power network Download PDFInfo
- Publication number
- CN101826735A CN101826735A CN 201010163743 CN201010163743A CN101826735A CN 101826735 A CN101826735 A CN 101826735A CN 201010163743 CN201010163743 CN 201010163743 CN 201010163743 A CN201010163743 A CN 201010163743A CN 101826735 A CN101826735 A CN 101826735A
- Authority
- CN
- China
- Prior art keywords
- led
- module
- microprocessor controls
- load characteristic
- network
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a system capable of feeding the LED load power energy back to the commercial power network, comprising an LED power supply. The LED power supply is connected with the commercial power network and a micro controller which is used for controlling a module for simulating the load characteristic DC/DC change; the module for simulating the load characteristic DC/DC change is controlled by the micro controller and is connected with a module for inverting a pulse-width modulation (PWM) active connected network; the module for inverting the PWM active connected network is controlled by the micro controller and is connected with the commercial power network; a voltage detection module is connected between the LED power supply and the module for simulating the load characteristic DC/DC change; and a commercial power network phase detection module is connected between the module for inverting the PWM active connected network and the commercial power network. The system is capable of simulating the LED load characteristic and efficiently feeding back the power energy loaded by the LED power supply to the commercial power network so as to save the power energy.
Description
Technical field
The present invention relates 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.
Summary of the invention
For overcoming deficiency of the prior art, the object of the present invention is 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 present invention 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 invention has the beneficial effects as follows: 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 present invention will be further described in detail below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is a system principle diagram of the present invention.
Fig. 2 is a LED load characteristic schematic diagram of the present invention.
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 |
|---|---|---|---|
| CN 201010163743 CN101826735A (en) | 2010-05-06 | 2010-05-06 | System capable of feeding LED load power energy back to commercial power network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010163743 CN101826735A (en) | 2010-05-06 | 2010-05-06 | System capable of feeding LED load power energy back to commercial power network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101826735A true CN101826735A (en) | 2010-09-08 |
Family
ID=42690505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010163743 Pending CN101826735A (en) | 2010-05-06 | 2010-05-06 | System capable of feeding LED load power energy back to commercial power network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101826735A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103118469A (en) * | 2013-02-19 | 2013-05-22 | 广州从兴电子开发有限公司 | Method and device for controlling LED streetlamp |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101359038A (en) * | 2007-08-02 | 2009-02-04 | 中茂电子(深圳)有限公司 | Electronic load device capable of simulating LED characteristic and simulation method thereof |
| US20090204239A1 (en) * | 2007-10-29 | 2009-08-13 | Netzel Sr Robert J | LED Light Controller System and Method |
| CN101702523A (en) * | 2009-11-20 | 2010-05-05 | 南京航空航天大学 | Distributed modular grid-connected power generation system and control method thereof |
| CN201726153U (en) * | 2010-05-06 | 2011-01-26 | 苏州元泰自动化科技有限公司 | System capable of feeding back LED load electric energy to grid |
-
2010
- 2010-05-06 CN CN 201010163743 patent/CN101826735A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101359038A (en) * | 2007-08-02 | 2009-02-04 | 中茂电子(深圳)有限公司 | Electronic load device capable of simulating LED characteristic and simulation method thereof |
| US20090204239A1 (en) * | 2007-10-29 | 2009-08-13 | Netzel Sr Robert J | LED Light Controller System and Method |
| CN101702523A (en) * | 2009-11-20 | 2010-05-05 | 南京航空航天大学 | Distributed modular grid-connected power generation system and control method thereof |
| CN201726153U (en) * | 2010-05-06 | 2011-01-26 | 苏州元泰自动化科技有限公司 | System capable of feeding back LED load electric energy to grid |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103118469A (en) * | 2013-02-19 | 2013-05-22 | 广州从兴电子开发有限公司 | Method and device for controlling LED streetlamp |
| CN103118469B (en) * | 2013-02-19 | 2016-05-25 | 广东南能汇智节能科技有限公司 | A kind of LED method for controlling street lamps and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102497711B (en) | LED drive circuit and comprise the Switching Power Supply of this drive circuit | |
| CN102832836B (en) | Cascade boost and inverting buck converter with independent control | |
| US9112430B2 (en) | Direct current to alternating current conversion utilizing intermediate phase modulation | |
| CN103490632B (en) | Step-up step-down type output voltage balancing circuit | |
| CN201422077Y (en) | Power supply | |
| CN102148566B (en) | Boost-type voltage balance converter | |
| CN101958527A (en) | Boost type LED constant flow source under-voltage protection circuit | |
| CN204030960U (en) | By means of the Boost DC electric energy output control circuit device that Partial Power controls | |
| CN204069441U (en) | LED illumination non-isolated drive circuit | |
| CN101752143A (en) | Energy saver for AC contactor | |
| CN205142009U (en) | Intelligence switch power control system | |
| CN202818657U (en) | Portable induction heater | |
| CN201726153U (en) | System capable of feeding back LED load electric energy to grid | |
| CN103596327A (en) | Non-isolated LED driving circuit | |
| CN101826735A (en) | System capable of feeding LED load power energy back to commercial power network | |
| Chern et al. | Single-stage flyback converter for LED driver with inductor voltage detection power factor correction | |
| CN201196746Y (en) | Heating temperature control device of device aging screening vehicle | |
| CN201726152U (en) | System capable of feeding battery loaded electric energy back to power grid | |
| CN201955456U (en) | Energy-saving aging system for LED (light-emitting diode) street lamp power supplies | |
| CN202514135U (en) | Alternating-current driving light emitting diode (LED) circuit | |
| CN202353862U (en) | Light source supply system | |
| CN202424525U (en) | Frequency converter | |
| CN202374029U (en) | Module power supply for uninterruptedly supplying power with super capacitor as storage | |
| Abd Rahim et al. | Design and implementation of a stand-alone microinverter with push-pull DC/DC power converter | |
| CN202218460U (en) | DC coupled buck-boost solar LED power source |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100908 |