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
  • H05B41/02—Details
  • H05B41/04—Starting switches
• • 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
  • H05B41/288—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 with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
• • 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
  • H05B41/288—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 with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
  • H05B41/2881—Load circuits; Control thereof
• • 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
  • H05B41/16—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies
  • H05B41/18—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having a starting switch
• • 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
  • H05B41/24—Circuit arrangements in which the lamp is fed by high frequency ac, or with separate oscillator frequency
• • 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

Definitions

• the invention relates to a method for igniting a high-pressure discharge lamp by means of an ignition device.
• the invention is based on a method for igniting a high-pressure discharge lamp by means of an ignition device with an ignition transformer according to the preamble of the main claim.
• the known ignition device has an ignition transformer, a starting capacitor and a spark gap as the ignition switch.
• the primary winding is maral ⁇ tet serially to the ignition capacitor and the spark gap.
• the secondary winding is connected in the current path of the high-pressure discharge lamp to be ignited.
• a charging voltage is applied in parallel to the ignition capacitor. If this exceeds the switching voltage of the spark gap, so this turns on and there is a short, high current ⁇ shock in the primary winding of the ignition transformer, which is up-converted and is applied via the secondary winding to the high-pressure discharge lamp. If the primary current falls below a certain value, the discharge arc in the spark gap goes out and this switches off again.
• the duty cycle is not optimal because the spark gap can not be actively switched off and conducts until the ignition current falls below a holding ⁇ threshold and the spark gap switches off. The Duty cycle is therefore significantly longer than the optimal Einsehaltdauer.
• the object is achieved according to the invention by a method for igniting a high-pressure discharge lamp by means of an ignition device having a starting capacitor, an ignition switch and an ignition transformer, characterized by the following steps taking place one behind the other:
• the fundamental frequency here is the fundamental frequency of the ignition switch current without higher-frequency vibrations. These high frequency oscillations can cause the current through the ignition switch to momentarily become zero before the fundamental of the ignition switch current becomes zero.
• the ignition switch is inventively actively ⁇ on and doing the duty cycle is so short ⁇ th held that the ignition switch is turned under power. With this measure, a higher ignition voltage can be achieved with greater repeatability.
• the ignition switch is opened at a switch-off time, which depends on the current voltage of the ignition capacitor. With this measure, a simpler control of the ignition switch is achieved.
• the switch-off time is in the voltage range of 60% of the positive charging voltage of
• Ignition capacitor up to 90% of the charging voltage of the Zündkon ⁇ capacitor which is achieved in the subsequent negative voltage maximum.
• the voltage generated when the switch opens can be higher than the voltage generated when the switch is closed.
• a meaningful area for the switch-off time points for a particular circuit arrangement can be during the development the circuit arrangement can be obtained by the following method:
• This method can also be carried out by the circuit arrangement during operation, if the ignition ⁇ voltage itself or a value correlating with the ignition voltage magnitude can be measured.
• the measurement of an absolute Zündnapssucc is not absolutely necessary, it is sufficient if the height of the ignition voltage can be measured relatively.
• the circuit arrangement preferably generates a plurality of ignition pulses by repeatedly closing and reopening the switch.
• the switch-off time point is particularly preferably varied within the meaningful switch-off range found above.
• the switch-off time is varied within the Ausschalt Symposium Editions until the high pressure discharge lamp has ignited, and this from ⁇ switching time is then stored to start during your next ⁇ th ignition phase with this switch-off.
• the circuit arrangement for igniting a high-pressure discharge lamp has an ignition transformer having a primary and a secondary winding, wherein the secondary winding is connected to the lamp to be ignited and the primary winding with an ignition switch, wherein the ignition switch is controllable to a through the primary winding of Ignition switch active current active, and the circuit arrangement executes the above method and the switch-off of the switch varies in a predetermined Be ⁇ rich.
• FIG. 1 shows a circuit arrangement with an ignition device which has a controlled switch which can carry out the method according to the invention
• Fig. 3 shows a first Zündpulsform invention
• Fig. 5 is a graph for the optimum
• FIG. 1 shows a circuit arrangement known per se for operating high-pressure discharge lamps which comprise a half-bridge lamp.
• Bridge with the series-connected half-bridge switches S2 and S3, at the center of a series circuit of a lamp inductor L3, the secondary winding L2 of a Zünd ⁇ transformer TR and a high-pressure discharge lamp 5 is connected.
• the free end of the high-pressure discharge lamp 5 is connected to the connection point of a series connection of two coupling capacitors C 1 and C 2.
• the half-bridge is connected in parallel with the series connection of the coupling capacitors.
• the supply voltage U_B (425V in this exemplary embodiment) is applied to this parallel circuit.
• the anode of the freewheeling diode and a connection of the ignition capacitor C3 are connected to the reference ⁇ potential of the supply voltage U_B.
• a charging resistor Rl for charging the ignition capacitor C3 is connected between the other terminal of the ignition capacitor C3 and the Ver ⁇ supply potential of the supply voltage U_B .
• a charging resistor Rl for charging the ignition capacitor C3 is connected. On this resistance of the ignition capacitor C3 is charged until the voltage applied to it a plausible ⁇ agreed charging voltage exceeds U_C3. If this is the case, then the ignition switch Sl is turned on at the time t 1, ie conducting, as shown in Fig. 2.
• a circuit current begins to flow through the components C3, LI and S1 / D2, and the circular current is transformed by the ignition transformer TR secondary side into an ignition voltage Uz.
• the ignition switch is turned off again.
• the voltage at the ignition capacitor C3 shows channel 1.
• Channel 2 shows the voltage at the ignition switch Sl, channel 3, the current ii through the primary winding LI of the ignition transformer TR.
• Channel 4 finally shows the ignition voltage Uz ⁇ whose maximum at about 3kV is OFF ignition pulse here.
• FIG. 3 shows an ignition pulse shape generated by the method according to the invention and the courses of relevant quantities.
• the ignition voltage at switch-off ignition pulse here is 5, 2kV.
• the optimal switch-off time lies in the time range in which the ignition capacitor C3 at its first discharge the voltage range of + 60% of the charging voltage until reaching 90% of the charging voltage of the subsequent negative voltage maximum (-90%), which would be achieved without actively switching off the ignition switch (see FIG.
• the charging voltage is the voltage applied to the ignition switch before switching on the ignition switch.
• the maximum is reached during Zündpulsdorf Power off ⁇ th of the ignition switch. This is called a switch-off ignition pulse.
• the amount of ignition voltage is higher than the ignition voltage when switching on the switch, which is called igniting pulse.
• a total particularly effective ignition pulse is also achieved insbeson ⁇ particular that an equally high or higher Ausschaltzündpuls is generated, which follows in Zündspan ⁇ tion course directly to the Einschaltzündpuls.
• the turn-on ignition pulse is about 4 kV
• the turn-off spark, as written above is about 5, 2 kV.
• the optimum time for switching off depends on the lamp cable length as well as on the cable capacitance and inductance.
• the lamp cable length, Jardinkapazi ⁇ ty and inductance vary depending on the application.
• the duty cycle of Zündschal ⁇ ters during the ignition phase of the electronic ballast is varied in a time range so that the optimal duration is swept for any in the application confi ⁇ guration.
• This method is particularly particularly advantageous with a microcontroller feasible.
• This can vary during the ignition phase the switch-off in a reasonable Be ⁇ rich, in order to generate a firing pulse of optimum height in each case.
• the switch-off time which are stored generated the highest firing pulse in order to meet to ⁇ future ignition phases with this switch-off time , The procedure can be repeated as needed or at regular intervals.
• FIG. 4a shows an ignition pulse generated by the method according to the invention and the courses of relevant variables for a switch-on duration of the ignition switch which is at the upper limit of the switch-on duration according to the invention.
• the naming of the relevant variables is the same as in Fig. 3.
• the Einschaltzündpuls here is approximately 4 kV, the off ⁇ schaltzündpuls at about 3, 6 kV.
• FIG. 4b shows the situation with a switch-on duration of the ignition switch which lies at the lower limit of the switch-on duration according to the invention.
• the naming of the relevant variables is the same as in Fig. 3.
• the turn ⁇ ignition pulse here is approximately 4 kV, the Ausschaltzündpuls at about 3, 3 kV.
• FIG. 5 shows the curves of FIG. 2 with a graphical representation of the optimal AuschhaltZeit Vietnameses invention of the ignition switch Sl.
• the ignition switch is turned on at time tl.

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• Circuit Arrangements For Discharge Lamps (AREA)

Applications Claiming Priority (1)

Publications (1)

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ID=44624870

Family Applications (1)

Country Status (6)

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• 2010
  • 2010-09-22 CN CN201080069247.9A patent/CN103120026B/zh not_active Expired - Fee Related
  • 2010-09-22 KR KR1020137007187A patent/KR20130138215A/ko not_active Application Discontinuation
  • 2010-09-22 EP EP10763640A patent/EP2524580A2/de not_active Withdrawn
  • 2010-09-22 US US13/825,710 patent/US20140167635A1/en not_active Abandoned
  • 2010-09-22 JP JP2013528524A patent/JP2013537354A/ja not_active Ceased
  • 2010-09-22 WO PCT/EP2010/063954 patent/WO2012037973A2/de active Application Filing

Non-Patent Citations (1)

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