JP2005135882A - Discharge lamp lighting device - Google Patents

Discharge lamp lighting device Download PDF

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Publication number
JP2005135882A
JP2005135882A JP2003408157A JP2003408157A JP2005135882A JP 2005135882 A JP2005135882 A JP 2005135882A JP 2003408157 A JP2003408157 A JP 2003408157A JP 2003408157 A JP2003408157 A JP 2003408157A JP 2005135882 A JP2005135882 A JP 2005135882A
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chopper
circuit
voltage
discharge lamp
inductor
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JP2003408157A
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Japanese (ja)
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Seiji Sakuma
清二 佐久間
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Hitachi Lighting Ltd
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Hitachi Lighting Ltd
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Priority to JP2003408157A priority Critical patent/JP2005135882A/en
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    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Abstract

<P>PROBLEM TO BE SOLVED: To provide a discharge lamp lighting device, of which efficiency is enhanced by supplying part of power directly from an inductor 20 for a chopper at a chopper circuit 100 to a discharge lamp 91. <P>SOLUTION: The discharge lamp lighting device comprises a chopper circuit 100 operating by receiving a voltage of rectified power source 10 obtained by rectifying the voltage of an alternating current power source 11, an inverter circuit 200 converting the voltage of a smoothing capacitor 50 at an end part of the chopper circuit 100 into a high-frequency voltage, and a lighting circuit 300 receiving high-frequency power from the inverter circuit 200. The chopper circuit 100 includes the inductor 20 for the chopper and a chopper switching element 30, intermittently connecting the inductor 20 for the chopper with the rectified power source 10. The lighting circuit 300 includes the discharge lamp 91 and an impedance 92 for ballast, serially connected to the discharge tube. An auxiliary winding 22 wound on the inductor 20 for the chopper is provided. The voltage of the auxiliary winding 22 is impressed on the discharge lamp 91 via an impedance 29 for the auxiliary ballast. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、交流電源電圧を整流した整流電源電圧を受けて動作するチョッパ回路を備え、前記チョッパ回路末端の平滑用コンデンサ電圧を高周波電圧に変換するインバータ回路を備え、前記インバータ回路から高周波電力をうける点灯回路を備えた放電灯点灯装置に関するものである。  The present invention includes a chopper circuit that operates by receiving a rectified power supply voltage obtained by rectifying an AC power supply voltage, an inverter circuit that converts a smoothing capacitor voltage at a terminal of the chopper circuit into a high-frequency voltage, and generates high-frequency power from the inverter circuit. The present invention relates to a discharge lamp lighting device provided with a lighting circuit.

前記放電灯点灯装置について補足する。前記チョッパ回路はチョッパ用インダクタと該チョッパ用インダクタを前記整流電源へ断続的に接続するチョッパ用スイッチング素子を含む。また、前記点灯回路は放電灯とそれに直列の主バラスト用インピーダンスを含む。
以上のような放電灯点灯装置は周知であり、かかる構成を示す多数の特許関係公報あるいは製品事例が存在する。It supplements about the said discharge lamp lighting device. The chopper circuit includes a chopper inductor and a chopper switching element that intermittently connects the chopper inductor to the rectified power source. The lighting circuit includes a discharge lamp and a main ballast impedance in series therewith.
The discharge lamp lighting device as described above is well known, and there are many patent publications or product examples showing such a configuration.

前記放電灯に対しては、チョッパ回路並びにインバータ回路を介して給電される。このため、効率が良くない。
本発明の目的は、チョッパ回路におけるチョッパ用インダクタの箇所から、放電灯へ直に一部の電力を供給し、それによって効率を高めることを目的とする。Power is supplied to the discharge lamp via a chopper circuit and an inverter circuit. For this reason, efficiency is not good.
An object of the present invention is to supply a part of power directly from a location of a chopper inductor in a chopper circuit to a discharge lamp, thereby improving efficiency.

本発明においては、 交流電源電圧を整流した整流電源電圧を受けて動作するチョッパ回路を備える。前記チョッパ回路末端の平滑用コンデンサ電圧を高周波電圧に変換するインバータ回路を備える。前記インバータ回路から高周波電力をうける点灯回路を備える。
前記チョッパ回路はチョッパ用インダクタと該チョッパ用インダクタを前記整流電源へ断続的に接続するチョッパ用スイッチング素子を含む。また、前記点灯回路は放電灯とそれに直列の主バラスト用インピーダンスを含む。
本発明においては、前記チョッパ用インダクタの鉄心に巻かれた補助巻線を設け、前期補助巻線電圧を補助バラスト用インピーダンスを介して前記放電灯へ印加する。The present invention includes a chopper circuit that operates by receiving a rectified power supply voltage obtained by rectifying an AC power supply voltage. An inverter circuit for converting the smoothing capacitor voltage at the end of the chopper circuit into a high-frequency voltage; A lighting circuit that receives high-frequency power from the inverter circuit is provided.
The chopper circuit includes a chopper inductor and a chopper switching element that intermittently connects the chopper inductor to the rectified power source. The lighting circuit includes a discharge lamp and a main ballast impedance in series therewith.
In the present invention, an auxiliary winding wound around the iron core of the chopper inductor is provided, and the previous auxiliary winding voltage is applied to the discharge lamp via the auxiliary ballast impedance.

本発明によれば、チョッパ回路におけるチョッパ用インダクタの箇所から、放電灯へ直に一部の電力を供給するので、効率を高めることができる。  According to the present invention, since a part of electric power is supplied directly from the location of the chopper inductor in the chopper circuit to the discharge lamp, the efficiency can be improved.

図１および図２を用いて、本発明の実施形態について説明する。図示装置は、交流電源１１電圧を整流した整流電源１０電圧を受けて動作するチョッパ回路１００を備える。前記チョッパ回路１００末端の平滑用コンデンサ５０電圧を高周波電圧に変換するインバータ回路２００を備える。前記インバータ回路２００から高周波電力をうける点灯回路３００を備える。
前記チョッパ回路１００はチョッパ用インダクタ２０と該チョッパ用インダクタ２０を前記整流電源１０へ断続的に接続するチョッパ用スイッチング素子３０を含む。前記点灯回路３００は放電灯９１とそれに直列の主バラスト用インピーダンス９２を含む。
前記チョッパ用インダクタ２０の鉄心に巻かれた補助巻線２２を設ける。前期補助巻線２２電圧を補助バラスト用インピーダンス２９を介して前記放電灯９１へ印加する。図１図示上は補助巻線２２および鉄心は一対あるように見えるが、実際には同一のものである。An embodiment of the present invention will be described with reference to FIGS. 1 and 2. The illustrated apparatus includes a chopper circuit 100 that operates by receiving a rectified power supply 10 voltage obtained by rectifying an AC power supply 11 voltage. An inverter circuit 200 is provided for converting the voltage of the smoothing capacitor 50 at the end of the chopper circuit 100 into a high frequency voltage. A lighting circuit 300 that receives high-frequency power from the inverter circuit 200 is provided.
The chopper circuit 100 includes a chopper inductor 20 and a chopper switching element 30 that intermittently connects the chopper inductor 20 to the rectified power supply 10. The lighting circuit 300 includes a discharge lamp 91 and a main ballast impedance 92 in series therewith.
An auxiliary winding 22 wound around the iron core of the chopper inductor 20 is provided. The voltage of the first auxiliary winding 22 is applied to the discharge lamp 91 via the auxiliary ballast impedance 29. In FIG. 1, the auxiliary winding 22 and the iron core appear to have a pair, but they are actually the same.

説明を補足する。符号１０〜５０の部品は前記チョッパ回路１００に属する。符号６１〜８２の部品はインバータ回路２００に属する。符号９１〜９３の部品は点灯回路３００に属する。整流電源１０は整流用ダイオード１２〜１５を含む。チョッパ用インダクタ２０は鉄心とそれらに巻かれて主巻線２１および補助巻線２２を含む。主たる役割はチョッパ用インダクタ２０であるが、主巻線２１・補助巻線２２を含むトランスとしても機能する。チョッパ用スイッチング素子３０がオンのときにチョッパ用インダクタ２０に電磁エネルギを蓄積し、オフのときに該電磁エネルギを放出し逆阻止用ダイオード４０を介して平滑用コンデンサ５０を充電する。順直列一対のインバータ用スイッチング素子６１・６２およびその夫々に逆並列に接続されるフライホイールダイオード７１・７２および一対のアーム用コンデンサ８１・８２はハーフブリッジ形のインバータ回路２００を構成する。  Supplement the explanation. Components denoted by reference numerals 10 to 50 belong to the chopper circuit 100. Components denoted by reference numerals 61 to 82 belong to the inverter circuit 200. Components 91 to 93 belong to the lighting circuit 300. The rectifying power supply 10 includes rectifying diodes 12 to 15. The chopper inductor 20 includes an iron core and a main winding 21 and an auxiliary winding 22 wound around them. Although the main role is the chopper inductor 20, it also functions as a transformer including the main winding 21 and the auxiliary winding 22. When the chopper switching element 30 is on, electromagnetic energy is accumulated in the chopper inductor 20. When the chopper switching element 30 is off, the electromagnetic energy is discharged and the smoothing capacitor 50 is charged via the reverse blocking diode 40. A pair of forward-series inverter switching elements 61 and 62, flywheel diodes 71 and 72 and a pair of arm capacitors 81 and 82 connected in antiparallel to each of them constitute a half-bridge inverter circuit 200.

放電灯９１は蛍光ランプである。放電灯９１と直列に主バラストインピーダンス９２が接続される。これはインダクタである。放電灯９１の非電源側端子間に予熱用コンデンサ９３が接続される。これらは点灯回路３００の主たる構成要素である。
主巻線２１の電圧Ｖ２１は図２のような高周波電圧である。その負半波電圧Ｖ２１Ｎは整流電源１０電圧瞬時値の符号を反転させた値となる。その正半波電圧Ｖ２１Ｐは平滑用コンデンサ電圧５０から前記瞬時値を差し引いた値となる。整流電源１０電圧の瞬時値はその電圧位相θに応じて変化する。このため、主巻線電圧Ｖ２１は電圧位相θの関数となる。説明の便宜上、図示の正半波電圧Ｖ２１Ｐは逆阻止ダイオード４０がオン状態となる前提のものである。逆阻止ダイオード４０がオフとなる期間の正半波電圧Ｖ２１Ｐはそれより低い。主巻線電圧Ｖ２１について説明したが、補助巻線２２の電圧はそれに比例する。The discharge lamp 91 is a fluorescent lamp. A main ballast impedance 92 is connected in series with the discharge lamp 91. This is an inductor. A preheating capacitor 93 is connected between the non-power supply side terminals of the discharge lamp 91. These are the main components of the lighting circuit 300.
The voltage V21 of the main winding 21 is a high frequency voltage as shown in FIG. The negative half-wave voltage V21N is a value obtained by inverting the sign of the instantaneous value of the rectified power supply 10 voltage. The positive half-wave voltage V21P is a value obtained by subtracting the instantaneous value from the smoothing capacitor voltage 50. The instantaneous value of the rectified power supply 10 voltage changes according to the voltage phase θ. For this reason, the main winding voltage V21 is a function of the voltage phase θ. For convenience of explanation, the illustrated half-wave voltage V21P is a premise that the reverse blocking diode 40 is turned on. The positive half-wave voltage V21P when the reverse blocking diode 40 is off is lower than that. Although the main winding voltage V21 has been described, the voltage of the auxiliary winding 22 is proportional thereto.

本発明においては、補助巻線２２電圧を高周波電源として利用し、そこから補助バラスト用インピーダンス２９を介して放電灯９１に給電する。図示の補助バラスト用インピーダンス２９はキャパシタンスである。放電灯９１への給電はインバータ回路２００からの電力と補助巻線２２からの電力の合計となる。
チョッパ用インダクタ２０を介して供給される電力のかなりの部分はインバータ回路２００を介して放電灯９１へ供給される。その電力の残りの部分は補助巻線２２を介し、インバータ回路２００を介さずに放電灯９１へ供給される。前者はチョッパ用スイッチング素子３０を介しかつインバータ用スイッチング素子６１・６２を経由する二変換形経路である。後者はチョッパ用スイッチング素子３０のみを経由する一変換形経路である。本発明においては、チョッパ用インダクタ２０を介して供給される電力の一部を前記後者のごとく、インバータ回路２００を介さずに放電灯９１へ供給するので、損失が少なく、その分だけ効率が高まる。In the present invention, the auxiliary winding 22 voltage is used as a high-frequency power source, and power is supplied to the discharge lamp 91 from there through an auxiliary ballast impedance 29. The auxiliary ballast impedance 29 shown is a capacitance. The power supply to the discharge lamp 91 is the sum of the power from the inverter circuit 200 and the power from the auxiliary winding 22.
A substantial part of the power supplied via the chopper inductor 20 is supplied to the discharge lamp 91 via the inverter circuit 200. The remaining portion of the power is supplied to the discharge lamp 91 via the auxiliary winding 22 and not via the inverter circuit 200. The former is a two-conversion path through the chopper switching element 30 and the inverter switching elements 61 and 62. The latter is a single conversion type path that passes only through the chopper switching element 30. In the present invention, a part of the power supplied via the chopper inductor 20 is supplied to the discharge lamp 91 without passing through the inverter circuit 200 as in the latter case, so that the loss is small and the efficiency is increased accordingly. .

本発装置の回路図である。It is a circuit diagram of this generator. その動作説明用波形図である。It is a waveform diagram for explaining the operation.

符号の説明Explanation of symbols

１０：整流電源
１００：チョッパ回路
１１：交流電源
２０：チョッパ用インダクタ
２００：インバータ回路
２２：補助巻線
２９：補助バラスト用インピーダンス
３０：チョッパ用スイッチング素子
３００：点灯回路
５０：平滑用コンデンサ
９１：放電灯
９２：主バラスト用インピーダンス10: Rectified power supply 100: Chopper circuit 11: AC power supply 20: Inductor for chopper 200: Inverter circuit 22: Auxiliary winding 29: Impedance for auxiliary ballast 30: Switching element for chopper 300: Lighting circuit 50: Smoothing capacitor 91: Release Lamp 92: Impedance for main ballast

Claims (1)

交流電源（１１）電圧を整流した整流電源（１０）電圧を受けて動作するチョッパ回路（１００）を備え、前記チョッパ回路（１００）末端の平滑用コンデンサ（５０）電圧を高周波電圧に変換するインバータ回路（２００）を備え、前記インバータ回路（２００）から高周波電力をうける点灯回路（３００）を備え、
前記チョッパ回路（１００）はチョッパ用インダクタ（２０）と該チョッパ用インダクタ（２０）を前記整流電源（１０）へ断続的に接続するチョッパ用スイッチング素子（３０）を含み、前記点灯回路（３００）は放電灯（９１）とそれに直列の主バラスト用インピーダンス（９２）を含み、
前記チョッパ用インダクタ（２０）の鉄心に巻かれた補助巻線（２２）を設け、前記補助巻線（２２）電圧を補助バラスト用インピーダンス（２９）を介して前記放電灯（９１）へ印加することを特徴とする放電灯点灯装置。An inverter that includes a chopper circuit (100) that operates by receiving a rectified power supply (10) voltage obtained by rectifying an AC power supply (11) voltage, and converts the smoothing capacitor (50) voltage at the end of the chopper circuit (100) into a high-frequency voltage. A circuit (200), a lighting circuit (300) that receives high-frequency power from the inverter circuit (200),
The chopper circuit (100) includes a chopper inductor (20) and a chopper switching element (30) for intermittently connecting the chopper inductor (20) to the rectified power source (10), and the lighting circuit (300). Includes a discharge lamp (91) and a main ballast impedance (92) in series therewith,
An auxiliary winding (22) wound around the iron core of the chopper inductor (20) is provided, and the voltage of the auxiliary winding (22) is applied to the discharge lamp (91) via the auxiliary ballast impedance (29). A discharge lamp lighting device characterized by that.
JP2003408157A 2003-10-31 2003-10-31 Discharge lamp lighting device Pending JP2005135882A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003408157A JP2005135882A (en) 2003-10-31 2003-10-31 Discharge lamp lighting device

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Application Number Priority Date Filing Date Title
JP2003408157A JP2005135882A (en) 2003-10-31 2003-10-31 Discharge lamp lighting device

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JP2005135882A true JP2005135882A (en) 2005-05-26

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JP2003408157A Pending JP2005135882A (en) 2003-10-31 2003-10-31 Discharge lamp lighting device

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