LIGHTING DEVICE, LUMINAIRE, AND PROGRAM

To provide a lighting device, a luminaire, and a program that are capable of improving the control accuracy of a load current and suppressing distortion of an alternating current supplied from an external power supply source.SOLUTION: A lighting device 1 includes a power supply circuit 11, a current...

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Bibliographic Details
Main Authors HIMEDA MASATO, SEKI KEISUKE, DOI KATSUYUKI, ASANO HIROYUKI, KAMOI TAKESHI, YAMAMOTO MASASHI, YAMAHARA DAISUKE
Format Patent
LanguageEnglish
Japanese
Published 01.04.2021
Subjects
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS
CONTROL OR REGULATION THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
GENERATION
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Summary:To provide a lighting device, a luminaire, and a program that are capable of improving the control accuracy of a load current and suppressing distortion of an alternating current supplied from an external power supply source.SOLUTION: A lighting device 1 includes a power supply circuit 11, a current variable circuit 12, and a control circuit 13. The power supply circuit 11 outputs a DC output voltage Vo from a pair of output terminals P3 and P4. The current variable circuit 12 executes current feedback control for matching the value of a load current Io flowing through a light source 2 with a target value. The control circuit 13 executes voltage feedback control for adjusting the output voltage Vo. The control circuit 13 increases a voltage feedback gain in a transient period in which the load current Io changes due to a change of a dimming level indication so that the voltage feedback gain is larger than a voltage feedback gain in a steady period in which the dimming level indication does not change.SELECTED DRAWING: Figure 1 【課題】 負荷電流の制御精度を向上させ、かつ、外部電源から供給される交流電流の歪みを抑制することができる点灯装置、照明器具、及びプログラムを提供する。【解決手段】 点灯装置１は、電源回路１１と、電流可変回路１２と、制御回路１３と、を備える。電源回路１１は、一対の出力端子Ｐ３、Ｐ４から直流の出力電圧Ｖｏを出力する。電流可変回路１２は、光源２に流れる負荷電流Ｉｏの値を目標値に一致させる電流フィードバック制御を実行する。制御回路１３は、出力電圧Ｖｏを調整するための電圧フィードバック制御を実行する。制御回路１３は、調光レベルの指示が変わって負荷電流Ｉｏが変化している過渡期間における電圧フィードバックゲインを、調光レベルの指示が変わらない定常期間における電圧フィードバックゲインより大きくする。【選択図】図１
Bibliography:Application Number: JP20190173511