JP6326424B2 - Led光源におけるフリッカを低減するための回路及び方法 - Google Patents
Led光源におけるフリッカを低減するための回路及び方法 Download PDFInfo
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- JP6326424B2 JP6326424B2 JP2015541831A JP2015541831A JP6326424B2 JP 6326424 B2 JP6326424 B2 JP 6326424B2 JP 2015541831 A JP2015541831 A JP 2015541831A JP 2015541831 A JP2015541831 A JP 2015541831A JP 6326424 B2 JP6326424 B2 JP 6326424B2
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- 238000000034 method Methods 0.000 title claims description 21
- 230000002238 attenuated effect Effects 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 230000009466 transformation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
- H05B45/14—Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/222—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles for deploying structures between a stowed and deployed state
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/42—Arrangements or adaptations of power supply systems
- B64G1/44—Arrangements or adaptations of power supply systems using radiation, e.g. deployable solar arrays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/66—Arrangements or adaptations of apparatus or instruments, not otherwise provided for
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/08—Means for collapsing antennas or parts thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
- H01Q1/288—Satellite antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
- H01Q15/16—Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal
- H01Q15/161—Collapsible reflectors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S30/00—Structural details of PV modules other than those related to light conversion
- H02S30/20—Collapsible or foldable PV modules
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Description
Claims (16)
- LEDドライバであって、
正弦波入力電流を受信する入力であって、前記入力電流が、第1の導通角を有する第1のサイクルと第2の導通角を有する第2のサイクルとを有する、前記入力と、
前記入力に接続され、整流された出力を有する整流器と、
前記整流された出力に結合される判定回路であって、前記第1のサイクルの振幅が前記第2のサイクルの振幅の所定の値内となるかどうかを示す出力を有する、前記判定回路と、
前記判定回路の出力に結合され、前記第1のサイクルを調節するための量を示す出力を有する平衡化回路と、
前記整流された出力に結合される入力と、前記平衡化回路の出力に結合される入力とを有するコンバータであって、前記第1のサイクルの振幅が前記第2のサイクルの振幅の前記所定の値内にないときに前記第1のサイクルの振幅が前記第2のサイクルの振幅に実質的に等しくなるように調節する、前記コンバータと、
を含む、LEDドライバ。 - 請求項1に記載のLEDドライバであって、
前記コンバータがDC・DCコンバータである、LEDドライバ。 - 請求項1に記載のLEDドライバであって、
前記第1のサイクルがDC成分を有し、前記コンバータが前記第1のサイクルの前記DC成分を調節する、LEDドライバ。 - 請求項1に記載のLEDドライバであって、
前記コンバータと前記平衡化回路と前記判定回路とが単一の回路に統合される、LEDドライバ。 - 請求項1に記載のLEDドライバであって、
前記判定回路が、前記第1のサイクルの振幅が前記第2のサイクルの振幅より低いか否かを判定し、前記2つの振幅のうちの一層大きい方の振幅を備えたサイクルを一層低い方の振幅まで調節する、LEDドライバ。 - 請求項1に記載のLEDドライバであって、
各第1のサイクルがピークを有し、各第2のサイクルがピークを有し、前記第1のサイクルの振幅と前記第2のサイクルの振幅とが前記ピークに基づく、LEDドライバ。 - 請求項1に記載のLEDドライバであって、
各第1のサイクルが谷を有し、各第2のサイクルが谷を有し、前記第1のサイクルの振幅と前記第2のサイクルの振幅とが前記谷に基づく、LEDドライバ。 - 請求項1に記載のLEDドライバであって、
前記LEDドライバが電球内に位置する、LEDドライバ。 - LEDを駆動するために電流波形を生成するプロセスであって、
第1のサイクルと第2のサイクルとを有する正弦波波形を整流することであって、前記正弦波波形が前記第1のサイクルの間に第1の導通角で減衰されて前記第2のサイクルの間に第2の導通角で減衰され、前記整流することが、第1の振幅を有する第1のサイクルと第2の振幅を有する第2のサイクルとを有する整流された電流を提供する、前記整流することと、
前記整流された電流の第1のサイクルの第1の振幅と第2のサイクルの第2の振幅とが所定の値より大きい差を有するか否かを判定することと、
前記第1の振幅と前記第2の振幅との間の前記差が所定の値より大きいときに、前記第1の振幅と前記第2の振幅との一層大きい方の振幅が減衰されるべき量を判定することと、
前記第1の振幅と前記第2の振幅との一層大きい方の振幅を前記第1の振幅と前記第2の振幅との一層低い方の振幅に調節することによって、前記整流された電流を変換された電流波形に変換することと、
前記変換された電流波形で前記LEDを駆動することと、
を含む、プロセス。 - 請求項9に記載のプロセスであって、
前記第1の振幅が前記第2の振幅より大きく、前記調節することが、前記第1の振幅が前記第2の振幅にマッチするように前記第1のサイクルを減衰することを含む、プロセス。 - 請求項9に記載のプロセスであって、
前記第1の振幅が前記第2の振幅の所定の値内であることを判定することと、
前記第1の振幅が前記第2の振幅の所定の値の範囲内に維持することと、
を更に含む、プロセス。 - 請求項9に記載のプロセスであって、
前記第1のサイクルがDC成分を有し、前記変換することが、前記第1のサイクルの前記DC成分を変えることによって成される、プロセス。 - 請求項9に記載のプロセスであって、
前記変換することがDC・DCコンバータによって成される、プロセス。 - 請求項9に記載のプロセスであって、
前記第1の振幅が前記第2の振幅より小さく、前記変換することが、前記第1の振幅が前記第2の振幅にマッチするように前記第1のサイクルを増幅することを含む、プロセス。 - 請求項9に記載のプロセスであって、
各第1のサイクルがピークを有し、各第2のサイクルがピークを有し、前記第1のサイクルの振幅と前記第2のサイクルの振幅とが前記ピークに基づく、プロセス。 - 請求項9に記載のプロセスであって、
各第1のサイクルが谷(trough)を有し、各第2のサイクルが谷を有し、前記第1のサイクルの振幅と前記第2のサイクルの振幅とが前記谷に基づく、プロセス。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US13/667,964 US9084319B2 (en) | 2012-11-02 | 2012-11-02 | Circuits and methods for reducing flicker in an LED light source |
US13/667,964 | 2012-11-02 | ||
PCT/US2013/068288 WO2014071299A1 (en) | 2012-11-02 | 2013-11-04 | Circuits and methods for reducing flicker in an led light source |
Publications (2)
Publication Number | Publication Date |
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JP2016500913A JP2016500913A (ja) | 2016-01-14 |
JP6326424B2 true JP6326424B2 (ja) | 2018-05-16 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2015541831A Active JP6326424B2 (ja) | 2012-11-02 | 2013-11-04 | Led光源におけるフリッカを低減するための回路及び方法 |
Country Status (4)
Country | Link |
---|---|
US (3) | US9084319B2 (ja) |
JP (1) | JP6326424B2 (ja) |
CN (1) | CN104756605B (ja) |
WO (1) | WO2014071299A1 (ja) |
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-
2012
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2013
- 2013-11-04 WO PCT/US2013/068288 patent/WO2014071299A1/en active Application Filing
- 2013-11-04 JP JP2015541831A patent/JP6326424B2/ja active Active
- 2013-11-04 CN CN201380056358.XA patent/CN104756605B/zh active Active
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2015
- 2015-07-13 US US14/798,126 patent/US9832828B2/en active Active
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Also Published As
Publication number | Publication date |
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CN104756605A (zh) | 2015-07-01 |
US20160014863A1 (en) | 2016-01-14 |
CN104756605B (zh) | 2017-12-05 |
JP2016500913A (ja) | 2016-01-14 |
WO2014071299A1 (en) | 2014-05-08 |
US9084319B2 (en) | 2015-07-14 |
US20140125239A1 (en) | 2014-05-08 |
US9832828B2 (en) | 2017-11-28 |
US9944413B2 (en) | 2018-04-17 |
US20180044040A1 (en) | 2018-02-15 |
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