WO2010124314A1 - Notlichtbetriebsgerät mit potentialgetrennten pfc-einheit - Google Patents
Notlichtbetriebsgerät mit potentialgetrennten pfc-einheit Download PDFInfo
- Publication number
- WO2010124314A1 WO2010124314A1 PCT/AT2010/000140 AT2010000140W WO2010124314A1 WO 2010124314 A1 WO2010124314 A1 WO 2010124314A1 AT 2010000140 W AT2010000140 W AT 2010000140W WO 2010124314 A1 WO2010124314 A1 WO 2010124314A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- converter
- operating device
- pfc
- emergency light
- light operating
- Prior art date
Links
Classifications
-
- 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
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
- H02M1/4258—Arrangements for improving power factor of AC input using a single converter stage both for correction of AC input power factor and generation of a regulated and galvanically isolated DC output voltage
-
- 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
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Definitions
- the invention relates to an emergency lighting operating device for a lamp, in particular a gas discharge lamp, according to the preamble of patent claim 1 and a method according to the preamble of patent claim 6.
- Such circuits are used to drive lamps to provide emergency lighting in the event of a power failure, and are therefore used in lighting systems to provide emergency lighting based on battery operation.
- a common state of the art for mains operated ballasts for gas discharge lamps consists of two stages with switching components. One stage converts the AC line voltage to a DC high voltage while the other converts this DC high voltage to an AC operating voltage to ignite and operate the lamp.
- the first stage uses the topology of a boost converter to produce the controlled DC high voltage and a PFC IC to control the boost converter.
- the second stage has the topology of a half-bridge, as an inverter, so that the lamp is operated at high frequency by means of a choke. In this arrangement, the lamp has no potential isolation to the mains supply and must therefore be isolated from the earth and other circuits. Every high voltage as interference voltage The network can also be transmitted in the output circuit, and perhaps even amplified by the circuit of the device.
- the circuit is controlled by a PWM integrated circuit (PFC-IC 3) which drives the switch Q1 for an approximately constant on time to ensure a good power factor for the supply, monitoring the bus voltage (+ dc).
- PFC-IC 3 PWM integrated circuit
- a second winding 6 at the inductor L1 may be used to supply the integrated circuit of the PFC-IC 3 and to monitor the current through the inductor L1 to control the switching of Q1.
- the additional circuits can not be connected directly to the ballast without further potential separation. This potential separation is burdened by any interference voltage from the network.
- the solution according to the invention relates to an emergency lighting operating device for a lamp, in particular a fluorescent lamp, wherein emergency lighting operating device has a potential-separated PFC as input stage and a DC-AC converter at the output.
- the emergency light operating device has a battery from which the lamp is operated in the event of a power failure.
- the gas discharge lamp is operated by the DC-AC converter both when mains voltage is applied and in the event of a power failure.
- the invention also relates to a method for starting and operating a gas discharge lamp via a DC-AC converter, wherein the DC-AC converter in the event of a power failure, the gas discharge lamp is powered by a battery, and wherein during the application of a mains voltage at the terminals for Mains voltage of the DC-AC converter is fed via a potential-separated PFC with the mains voltage and at the same time the battery is charged via the potential-separated PFC
- Fig. 1 shows a circuit according to the prior art
- Fig. 2 shows a detail of the circuit according to the invention
- Fig. 3 shows an embodiment of the circuit according to the invention
- an isolated PFC stage is used.
- An emergency lighting operating device 1 for a gas discharge lamp 5 is shown here.
- the emergency light operating device 1 has a potential-separated PFC as an input stage and a DC-AC converter 4 (ie an inverter) for operating the gas discharge lamp 5 at the output.
- the gas discharge lamp 5 is operated both by the mains voltage and in the event of a power failure by the DC-AC converter 4.
- the input stage is formed by a flyback converter (isolated flyback converter) with a transformer T1, which isolates the output opposite the input side, thus producing a potential separation.
- a flyback converter isolated flyback converter
- the emergency light operating device 1 has a battery, from which the lamp 5 is operated in the event of a power failure.
- the PFC IC 3 controls the bus voltage (+ dc) for the PFC through a secondary winding 7 of the transformer T1.
- the PFC operates in so-called off-line operation, i. the switch Q1 remains open at least until the transformer T1 is demagnetized.
- the demagnetization of the transformer T1 can also be monitored and detected via the secondary winding 7.
- the PFC IC 3 drives the transformer T1, and a secondary winding 7 supplies the integrated circuit of the PFC IC 3 (that is, a low-voltage supply for the PFC IC 3 itself is generated).
- the Secondary winding 7 continues to serve to detect and monitor the bus voltage (+ dc) at the output, depending on the winding ratio of winding 7 to output winding 8, a statement about the bus voltage (+ dc) can thus be made.
- the PFC IC 3 can monitor the bus voltage (+ dc) through a secondary winding of the potential-separated PFC transformer T1 and, depending on this monitoring, drive the switch Q1 of the isolated PFC.
- the PFC-IC 3 can also be integrated in an integrated circuit (for example an ASIC, DSP or microcontroller), which additionally also contain other functions such as power failure monitoring or communication with an external interface, for example according to the DALI standard.
- Power factor correction circuit This ensures as sinusoidal power consumption from the supply network, ie via the network connections 2, safe.
- the isolated PFC can be switched off in the event of a power failure.
- the DC-AC converter can be powered by the battery.
- the output winding 8 provides in the blocking phase of the switch Q1 the bus voltage (+ dc) for the DC-AC converter 4 at the output by discharging during the blocking phase of the switch Q1 via the diode D1 in the capacitor C1.
- the bus voltage (+ dc) is smoothed by the capacitor C1.
- This output winding 8 is completely electrically isolated from the primary and the first secondary windings and thus also from the primary-side circuit. Thereby, the DC-AC converter 4 in the output and the lamp 5 are electrically isolated from the primary side of the circuit and can be grounded, if necessary, and would not let any mains voltage interference.
- the integrated circuit of the PFC 3 can monitor the bus voltage (+ dc) through a secondary winding 7 of the transformer T1 from the PFC 3.
- the secondary-side voltage at the output winding 8 can also be measured during the blocking phase of the switch Q1. As long as the diode D1 is conducting during the demagnetization of the transformer T1, the sum of the bus voltage (+ dc) and the forward voltage of the diode D1 is applied across the output winding 8. Knowing the forward voltage of the diode D1 and the winding ratio of the transformer T1 can therefore be concluded that the bus voltage (+ dc).
- the potential-separated PFC is operated in a so-called burst mode.
- the switch Q1 can be clocked in this burst mode only for individual power-up pulses or clocked for individual pulse packets, in particular to measure the bus voltage (+ dc). This can be the case, for example, if the PFC is actually switched off due to the failed mains voltage.
- the emergency light operating device can also operate the lamp 5 from a battery.
- the battery can be placed at the output of the Flyback PFC.
- the DC-AC converter 4 at the output may consist of a resonant half-bridge or a push-pull converter.
- the DC-AC converter 4 at the output can operate the gas discharge lamp 5 during mains operation by the energy from the PFC, and when there is a power failure, the DC-AC converter 4 is operated at the output from the battery. It could be arranged in parallel to the battery, an additional energy storage, for. B. a capacitor.
- the mains voltage at the terminals 2 can be monitored by a measurement on the secondary side of the isolated PFC. In particular, it can be recognized on the secondary side by the DC-AC converter 4 that no mains voltage is applied, whereupon the DC-AC converter 4 could feed the lamp from the battery and thus can ensure emergency lighting operation.
- the emergency light operating device has the advantage that all required measuring points can be arranged on the secondary side of the potential-separated PFC and they are thus isolated from the mains.
- the battery is charged by the isolated PFC during mains operation.
- the charge can be made by a direct connection to the bus voltage ( + dc) at the output or via a charging circuit, which is fed by the bus voltage (+ dc) at the output.
- the battery is arranged parallel to the capacitor C1.
- the DC-AC converter 4 can also be fed via an additional converter stage from the battery or / and from the bus voltage (+ dc).
- This additional converter stage can be formed for example by a boost converter circuit or an inverter circuit.
- the DC-AC converter 4 can also be monitored by a control circuit and its switch can be controlled by the control circuit.
- This control circuit may be an integrated circuit such as an ASIC or microcontroller. Since a potential-separated PFC is already connected upstream, now no potential-separated measurement on the lamp, for example of the lamp current, is more necessary. With a wide range of lamps and a choice of the number of battery cells, it is difficult to ensure both the required cathode heating and the correct lamp current. It is therefore preferred that a second controlled DC-AC converter be used to heat the cathodes.
- This may be another controlled push-pull converter, and this can also be controlled such that a high preheat temperature is reached at start, followed by a cathode heating at a lower heating for the operating phase, preferably to a fixed proportion of the total power in emergency mode.
- the second inverter for the heater
- This second controlled DC-AC converter for the cathode heating can also be fed by the bus voltage (+ dc).
- the circuit may include sensing elements to measure the battery current (eg, via a current sense resistor) or to measure the lamp current so as to control the duty cycle of the switches of the DC-AC converter 4 in response to the measured current. There may be an additional timer to set a higher current level by the DC-AC converter 4 for an initial period after the lamp start for a fast warm-up phase.
- the emergency lighting operating device 1 can also be designed so that communication via a control line is possible.
- the emergency lighting operating device may include an external interface via which, for example, the DALI standard (Digital Addressable Lighting Interface) can be used.
- DALI standard Digital Addressable Lighting Interface
- status information such as feedback on the battery status, a power failure or successful self- and battery tests can be sent out of the emergency lighting operating device 1 via the external interface, and control commands can also be received by a control center or an operating device.
- the external interface is referred to as such because it communicates with external Operating devices and control units allows. But it is located in the emergency light operating device 1.
- An internal interface may be provided in the emergency lighting operating device 1, via which the PFC-IC 3 and the control circuit of the DC-AC converter 4 can communicate.
- the PFC-IC 3 can perform a communication via the external interface via the control lines and evaluate received information and forward it via the internal interface to the control circuit of the DC-AC converter 4.
- the control circuit of the DC-AC converter 4 for example, return error messages via the internal interface.
- the internal interface is preferably designed to be isolated so that the requirements for potential separation in the emergency lighting operating device 1 are met.
- Gas discharge lamp 5 via a DC-AC converter 4 allows, the DC-AC converter 4 in the event of power failure, the gas discharge lamp 5 is fed from a battery, and wherein during the application of a mains voltage to the terminals 2 for the mains voltage of the DC-AC Transducer 4 is fed via a potential-separated PFC with the mains voltage and at the same time the battery is charged via the potential-separated PFC.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112010001814T DE112010001814A5 (de) | 2009-04-30 | 2010-04-30 | Notlichtbetriebsgerät mit potentialgetrennten pfc-einheit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATGM282/2009 | 2009-04-30 | ||
AT2822009 | 2009-04-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010124314A1 true WO2010124314A1 (de) | 2010-11-04 |
Family
ID=42562965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AT2010/000140 WO2010124314A1 (de) | 2009-04-30 | 2010-04-30 | Notlichtbetriebsgerät mit potentialgetrennten pfc-einheit |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE112010001814A5 (de) |
WO (1) | WO2010124314A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2654385B1 (de) | 2012-04-17 | 2017-11-08 | Helvar Oy Ab | Vorrichtung, Verfahren, Anordnung und Computerprogramm zum Steuern des Betriebs einer Netzteilschaltung |
AT16799U1 (de) * | 2015-04-14 | 2020-09-15 | Tridonic Gmbh & Co Kg | Vorschaltgerät mit Totem-Pole-Leistungsfaktorkorrektur (Totem-Pole-PFC) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002019778A2 (en) * | 2000-08-31 | 2002-03-07 | Koninklijke Philips Electronics N.V. | Gas-discharge lamp type recognition based on built-in lamp electrical properties |
EP1274286A1 (de) * | 2001-07-04 | 2003-01-08 | Teknoware Oy | Notbeleuchtungsgerät |
DE10259585A1 (de) * | 2001-12-19 | 2003-07-10 | Nicholas Buonocunto | Elektronisches Vorschaltsystem mit Notlbeleuchtungseigenschaften |
EP1507327A1 (de) * | 2003-08-13 | 2005-02-16 | Sander Elektronik AG | Notbeleuchtungseinheit mit integrierter Vorschaltanordnung |
US20070138967A1 (en) * | 2005-12-15 | 2007-06-21 | Timothy Chen | Dimming ballast and method |
DE102006030655A1 (de) * | 2006-04-21 | 2007-10-25 | Tridonicatco Gmbh & Co. Kg | Notlichtgerät zum Betreiben einer Lichtquelle, insbesondere einer LED |
DE202008008165U1 (de) * | 2008-06-18 | 2009-11-05 | Tridonicatco Gmbh & Co. Kg | Betriebsgerät für Gasentladungslampen oder andere Leuchtmittel mit Lampenstrommessung |
-
2010
- 2010-04-30 WO PCT/AT2010/000140 patent/WO2010124314A1/de active Application Filing
- 2010-04-30 DE DE112010001814T patent/DE112010001814A5/de not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002019778A2 (en) * | 2000-08-31 | 2002-03-07 | Koninklijke Philips Electronics N.V. | Gas-discharge lamp type recognition based on built-in lamp electrical properties |
EP1274286A1 (de) * | 2001-07-04 | 2003-01-08 | Teknoware Oy | Notbeleuchtungsgerät |
DE10259585A1 (de) * | 2001-12-19 | 2003-07-10 | Nicholas Buonocunto | Elektronisches Vorschaltsystem mit Notlbeleuchtungseigenschaften |
EP1507327A1 (de) * | 2003-08-13 | 2005-02-16 | Sander Elektronik AG | Notbeleuchtungseinheit mit integrierter Vorschaltanordnung |
US20070138967A1 (en) * | 2005-12-15 | 2007-06-21 | Timothy Chen | Dimming ballast and method |
DE102006030655A1 (de) * | 2006-04-21 | 2007-10-25 | Tridonicatco Gmbh & Co. Kg | Notlichtgerät zum Betreiben einer Lichtquelle, insbesondere einer LED |
DE202008008165U1 (de) * | 2008-06-18 | 2009-11-05 | Tridonicatco Gmbh & Co. Kg | Betriebsgerät für Gasentladungslampen oder andere Leuchtmittel mit Lampenstrommessung |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2654385B1 (de) | 2012-04-17 | 2017-11-08 | Helvar Oy Ab | Vorrichtung, Verfahren, Anordnung und Computerprogramm zum Steuern des Betriebs einer Netzteilschaltung |
AT16799U1 (de) * | 2015-04-14 | 2020-09-15 | Tridonic Gmbh & Co Kg | Vorschaltgerät mit Totem-Pole-Leistungsfaktorkorrektur (Totem-Pole-PFC) |
Also Published As
Publication number | Publication date |
---|---|
DE112010001814A5 (de) | 2012-05-31 |
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