JP2012248822A - Three-electrode long arc xenon discharge tube solar simulator and lighting method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar simulator that is capable of achieving lighting for a long time and has a long-life light source.SOLUTION: The solar simulator, which provides flash pseudo sunshine at a high output for a long time, using a combined circuit of a plurality of capacitors and power switching elements, achieves long service life and cost reduction by utilizing an advantage of a three-electrode discharge tube and a stable lighting system.

Description

  The present invention relates to a three-electrode long arc xenon discharge tube solar simulator and a lighting method thereof for irradiating, for example, a solar cell module with pseudo-sunlight.

  When measuring the characteristics of the solar cell module, the IV characteristic curve is measured by the pseudo sunlight irradiated from the solar simulator. Since a solar cell module has a large area, a high-output light source is required. Therefore, the IV characteristic curve is measured by irradiating the solar cell module with flash light.

  A long arc xenon discharge tube is used as a light source of a solar simulator that generates flash light. Solar cells have various structures, and some of them require a long time, for example, 100 ms or more, for measuring output characteristics. A long lighting time brings about deterioration of the long arc xenon discharge tube and a reduction in the service life thereof, and not only the running cost but also a reduction in operating rate due to an increase in adjustment time. For this reason, there is a demand for a solar simulator that can be lit for a long time and has a long-life light source.

JP 2008-300632 A

  Patent Document 1 discloses a solar simulator technology that realizes flash pseudo sunlight for a long time with a large output by using a circuit in which a plurality of capacitors and a power switching element are combined.

  However, in this apparatus, when the flash light is lit for a long time, a current flows through the long arc xenon discharge tube for a long time, so that there is a problem that the electrode is rapidly deteriorated and the life of the long arc xenon discharge tube is shortened.

  Since the light emission amount per unit length of the long arc xenon discharge tube depends on the plasma amount, the tube diameter and the tube length may be increased to increase the light emission amount. When the tube diameter is increased, the internal absorption of the plasma increases and the light emission rate decreases, so that the optimum tube diameter is inevitably determined. The tube length and the light quantity are highly correlated, and the extension of the tube length is effective for increasing the light emission amount, and various proposals have been made. However, the longer the tube length, the higher the applied voltage and the higher the power supply voltage, making the power supply expensive. Therefore, a discharge tube having an optimum tube diameter and capable of using an inexpensive power source is demanded.

  In order to solve the above-mentioned problems, in the present invention, one first electrode having a first polarity arranged at the central portion, and second and third electrodes having a second polarity arranged at both ends, respectively. A three-electrode long arc xenon discharge tube having a power source for generating lighting power to be supplied to the three-electrode long arc xenon discharge tube, first and second terminals of the power source, a first electrode, Connected to the third electrode, respectively, to turn on the three-electrode long arc xenon discharge tube, the lighting power from the power source to the first electrode and the second electrode and between the first electrode and the third electrode A three-electrode long arc xenon discharge tube lighting device for controlling supply and a three-electrode long arc xenon discharge tube lighting device connected to the first electrode and the second electrode by applying a trigger pulse voltage to the three-electrode long arc xenon discharge tube lighting device. The first electrode and the first electrode A three-electrode long arc xenon discharge tube lighting device is connected between the first terminal and the second terminal of the power source, the trigger electrode for starting each arc discharge between the three electrodes. A first resistor connected between the capacitor, the second terminal and the second electrode having the second polarity to balance the lighting power to the second electrode, and a second terminal A second resistor connected between the third electrode having the second polarity and balancing the lighting power to the third electrode; a first terminal having a first polarity and a first polarity; And a current controller for controlling the lighting power supplied to the first electrode based on the amount of light detected by the sensor, and the first and second resistors are discharged by discharge from the capacitor. Lighting power is supplied to each of the second and third electrodes via the three electrodes. Characterized by lighting the ring arc xenon discharge tube.

  Alternatively, in the present invention, the above-mentioned three-electrode long arc xenon discharge tube, power source, three-electrode long arc xenon discharge tube lighting device, and trigger electrode are provided. A capacitor connected between the first terminal and the second terminal, an input side connected to the second terminal, and an output side connected to the second electrode and the third electrode having the second polarity; A switch for selectively switching the connection between the second terminal and the second electrode or the third electrode, and discharging from the capacitor to the second electrode or the third electrode selected by the switch The lighting electric power is supplied by, and the three-electrode long arc xenon discharge tube is lit.

  Further, according to the present invention, in the lighting method of the three-electrode long arc xenon discharge tube, between the first terminal and the second terminal of the power source that generates the lighting power supplied to the three-electrode long arc xenon discharge tube. A capacitor is connected, a first resistor for balancing lighting power to the second electrode is connected between the second terminal and the second electrode having the second polarity, and the second terminal And a third resistor having a second polarity, a second resistor for balancing the lighting power to the third electrode is connected between the first terminal and the first electrode having the first polarity. And a current controller for controlling the lighting power supplied to the first electrode based on the amount of light detected by the sensor, and through the first and second resistors by discharging from the capacitor. To supply lighting power to the second and third electrodes, respectively, Characterized by lighting the ring arc xenon discharge tube.

  Alternatively, in the lighting method of the present invention, a capacitor is connected between the first terminal and the second terminal of the power source that generates the lighting power supplied to the three-electrode long arc xenon discharge tube, and the second terminal A switch for selectively switching the connection between the first electrode and the second electrode having the second polarity or the third electrode, the input side being connected to the second terminal, and the second electrode and the third electrode being connected The output side is connected, lighting power is supplied by discharge from the capacitor to the second electrode or the third electrode cathode selected by the switch, and the three-electrode long arc xenon discharge tube is lit. .

  According to the present invention, a three-electrode long arc xenon discharge tube can be lit at a low voltage and the life of the three-electrode long arc xenon discharge tube can be extended by reducing the deterioration of the electrode, thereby improving reliability and reducing running costs. Can do. In addition, it is possible to reduce the cost of the power supply by lowering the voltage, and the cost of the entire apparatus can be reduced.

It is explanatory drawing which showed the schematic structure of the whole of the 3 electrode long arc xenon discharge tube solar simulator by Embodiment 1 of this invention. It is explanatory drawing which showed the structure of the 2 electrode long arc xenon discharge tube. It is explanatory drawing which showed the structure of the 3 electrode long arc xenon discharge tube. It is the longitudinal cross-sectional view which showed the external appearance of the same 3 electrode long arc xenon discharge tube. The circuit diagram which showed the structure of the 3 electrode long arc xenon discharge tube lighting device by a reference example. Explanatory drawing which shows the trigger thyristor used with the trigger circuit in the same 3 electrode long arc xenon discharge tube lighting device. It is the circuit diagram which showed the structure of the 3 electrode long arc xenon discharge tube lighting device by Embodiment 1 of this invention which inserted balance resistance. It is a graph which shows the current-voltage characteristic of the same 3 electrode long arc xenon discharge tube, the current-voltage characteristic of series resistance, and the current-voltage characteristic which added the series resistance to the discharge tube, respectively. It is the circuit diagram which showed the structure of the 3 electrode long arc xenon discharge tube lighting device by Embodiment 2 of this invention which provided the current controller. It is the circuit diagram which showed the structure of the 3 electrode long arc xenon discharge tube lighting device by Embodiment 3 of this invention which provided the auxiliary capacitor for starting. It is the circuit diagram which showed the structure of the 3 electrode long arc xenon discharge tube lighting device by Embodiment 4 of this invention which provided the switching device.

  Hereinafter, a three-electrode long arc xenon discharge tube solar simulator and a lighting method thereof according to an embodiment of the present invention will be described with reference to the drawings.

(Embodiment 1)
A schematic configuration of a three-electrode long arc xenon discharge tube solar simulator according to Embodiment 1 of the present invention is shown in FIG. 1 as a conceptual diagram.

  The three-electrode long arc xenon discharge tube solar simulator is used to irradiate the solar cell module with flash simulated sunlight and obtain an IV characteristic curve.

  The three-electrode long arc xenon discharge tube solar simulator includes a three-electrode long arc xenon discharge tube 10 provided in the lamp head 1, an air mass filter 2, a first baffle 4, and a second baffle 5.

  The air mass filter 2, the first baffle 4, and the second baffle 5 are each installed perpendicular to the optical path irradiated from the light source to the solar cell module 6. The air mass filter 2 is for approximating the spectral irradiance distribution of the reference sunlight. Each of the first and second baffles 4 and 5 is a light shielding plate, and is used to determine an irradiation range, and shields light other than direct irradiation light, for example, light reflected on a wall surface. Further, a three-electrode long arc xenon discharge tube 10 is provided as a light source for the solar simulator.

  FIG. 2 shows the configuration of a two-electrode long arc xenon discharge tube. In this two-electrode long arc xenon discharge tube, when a voltage is applied between the anode 113 and the cathode 114 inside the discharge tube 112 and a trigger pulse voltage is applied to the trigger electrode 115, an arc is generated from the anode 113 to the cathode 114. Discharge occurs and lights up.

  FIG. 3 shows the configuration of the three-electrode long arc xenon discharge tube 10 used in the first to fourth embodiments. In the three-electrode long arc xenon discharge tube 10, a voltage is applied between the anode 13 and the cathodes 14 a and 14 b inside the discharge tube 11, and a high trigger pulse voltage is applied to the trigger electrode 15. The applied trigger pulse voltage is transmitted from the trigger electrode 15 through the tube wall of the discharge tube 12 into the tube, and the gas is ionized to generate a small discharge. As a result, an electronic avalanche phenomenon occurs and arc discharge occurs from the anode 13 to each of the two cathodes 14a and 14b, and the three-electrode arc xenon discharge tube 10 is turned on.

  The three-electrode long arc xenon discharge tube 10 has a configuration in which both lighting can be realized stably without causing one lighting. In normal use, both lamps need to be turned on so that a desired light amount can be obtained. However, as in the case of measurement of a small solar cell module or the like, when the necessary light quantity can be obtained by single lighting, single lighting may be performed.

  Here, the three-electrode long arc xenon discharge tube 10 needs the same arc length as the two-electrode long arc xenon discharge tube in order to obtain the same amount of light as the two-electrode long arc xenon discharge tube as shown in FIG. become. In the three-electrode long arc xenon discharge tube 10 shown in FIG. 4, the total length of the arc length from the anode 13 to the cathode 14a and the arc length from the anode 13 to the cathode 14b is the two-electrode long arc shown in FIG. If the arc length from the anode 113 to the cathode 114 of the arc xenon discharge tube is the same length, the same amount of light can be obtained. By shortening the length of one arc, the arc voltage at that portion is lowered and the power supply voltage can be lowered. As a result, the three-electrode long arc xenon discharge tube 10 can be lit using a low-voltage and inexpensive power source.

  Further, power consumption on one side of the three-electrode long arc xenon discharge tube 10, that is, power consumed by arc discharge from the anode 13 to the cathode 14 a, and power consumed by arc discharge from the anode 13 to the cathode 14 b are 2 respectively. Since the power consumption of arc discharge from the anode 13 to the cathode 14 of the electrode long arc xenon discharge tube is about half, the deterioration of each of the cathodes 14a and 14b is reduced. In general, since the deterioration of the cathodes 14a and 14b that are rapidly deteriorated can be suppressed, the life of the entire three-electrode long arc xenon discharge tube can be extended.

  In FIG. 4, the external appearance of this 3 electrode long arc xenon discharge tube 10 is shown as a longitudinal cross-sectional view. An anode 13 is provided at the center of the discharge tube 12, cathodes 14 a and 14 b are provided at both ends, a trigger electrode 15 is disposed outside, and the whole is covered with a glass globe 11.

  FIG. 5 shows a circuit configuration of a three-electrode long arc xenon discharge tube lighting device according to a reference example.

  This three-electrode long arc xenon discharge tube lighting device lights a three-electrode long arc xenon discharge tube 10 having a discharge tube 12, an anode 13, and cathodes 14a and 14b, and includes a power supply 71, a lighting power supply capacitor 31a, 31b, a trigger circuit including a trigger thyristor 21, a trigger capacitor 22, and a trigger transformer 23, diodes 41a and 41b, and resistors 51 and 52 are provided.

  Here, the trigger thyristor 21 included in the trigger circuit is configured by a thyristor as shown in FIG. 6, and a current flows from the anode to the cathode by flowing a current through the gate, and functions as a switching element. In the circuit of FIG. 5, when a pulse is applied to the gate of the trigger thyristor 21, a current flows from the anode to the cathode, the trigger capacitor 22 is discharged, and a high voltage trigger pulse boosted by the current flowing through the trigger transformer 23 is triggered. 15 is applied.

  The capacitor 31 a is charged through a path passing through the power source 71, the resistor 52, the capacitor 31 a, the diode 41 a, and the power source 71. Similarly, the capacitor 31b is charged through a path passing through the power source 71, the resistor 52, the capacitor 31b, the diode 41b, and the power source 71.

  The capacitors 31a and 31b are charged between the anode 13 and the cathode 14a of the three-electrode long arc xenon discharge tube 10 and between the anode 13 and the cathode 14b, whereby a power supply voltage is applied.

  In this state, when a trigger pulse is applied to the gate of the trigger thyristor 21 of the trigger circuit, a trigger pulse voltage is applied to the trigger electrode 15 between the anode 13 and the cathode 14a and between the anode 13 and the cathode 14b. Arc discharge starts and lights up. The lighting power is supplied by discharging the capacitors 31a and 31b.

  The current from the capacitor 31a flows in a path passing through the capacitor 31a, the anode 13, the discharge tube 12, the cathode 14a, and the capacitor 31a, and at the same time, the current from the capacitor 31b is the capacitor 31b, the anode 13, the discharge tube 12, the cathode 14b, and the capacitor 31b. It flows in the path that passes through.

  Thus, by providing separate capacitors 31a and 31b for each of the cathode 14a and the cathode 14b, arc discharge can be started and lit simultaneously at the two electrodes.

  FIG. 7 shows a circuit configuration of the three-electrode long arc xenon discharge tube lighting device according to the first embodiment.

  In the three-electrode long arc xenon discharge tube lighting device of the first embodiment, one capacitor 31 is provided, no diode is provided, and balance resistors 61a and 61b are added as compared with the above reference example.

  The capacitor 31 is charged through a path passing through the power source 71, the resistor 52, the capacitor 31, and the power source 71. The lighting power of the three-electrode long arc xenon discharge tube 10 is supplied by discharging the capacitor 31. The discharged current passes through the capacitor 31, the anode 13, the discharge tube 12, the cathode 14a, the balance resistor 61a, the capacitor 31, the path through the capacitor 31, the capacitor 31, the anode 13, the discharge tube 12, the cathode 14b, the balance resistor 61b, and the capacitor 31. It flows in 2 paths of the path which passes through.

  The graph of FIG. 8 shows the IV characteristics of the discharge tube and resistance in the three-electrode long arc xenon discharge tube lighting device according to the first embodiment. Since the negative resistance characteristic is such that the impedance decreases as the current increases, when two circuits are lit at the same time as in the three-electrode long arc xenon discharge tube 10, the impedance of the first lit decreases and the current decreases to the lower impedance. It flows and becomes one side lighting.

  However, a positive resistance characteristic can be obtained by adding resistance. Such a resistor is called a balance resistor, and balance resistors 61a and 61b are used in the above circuit. That is, by inserting the balance resistor 61a on the cathode 14a side and the balance resistor 61b on the cathode 14b side of the three-electrode long arc xenon discharge tube 10 in FIG. 7, a graph of the discharge tube + series resistance as shown in FIG. Thus, the circuit characteristics are positive resistance characteristics. As a result, current flows in both circuits, and the three-electrode long arc xenon discharge tube 10 is ignited by arc discharge in both. By using such balance resistors 61a and 61b, the single power supply 71 can be used, and the circuit configuration is simplified.

  The current flowing through the discharge tube 12 is determined by the resistance values of the balance resistors 61a and 61b, and the amount of emitted light is determined. For this reason, it is necessary to set each resistance value so that a desired light quantity can be obtained. When the resistance values of the balance resistors 61a and 61b are equal, the same power supply voltage can be applied between the anode 13 and the cathode 14a and between the anode 13 and the cathode 14b.

  According to the first embodiment, the load of the cathode that is rapidly deteriorated is reduced by being distributed to the two electrodes, and the arc discharge distance is shortened, so that the arc discharge voltage is low and the long life of the three-electrode long arc xenon discharge tube is achieved. As a result, the reliability is improved and the running cost is reduced, and the cost of the power supply is reduced by the low voltage power supply, thereby reducing the cost of the entire apparatus. Furthermore, the circuit configuration can be simplified by configuring the lighting power supply capacitor with one capacitor. Furthermore, low voltage discharge is possible without using a high voltage capacitor, and current control can be easily performed.

(Embodiment 2)
FIG. 9 shows a circuit configuration of a three-electrode long arc xenon discharge tube lighting device according to the second embodiment.

  The three-electrode long arc xenon discharge tube lighting device according to the second embodiment corresponds to a circuit configuration according to the first embodiment in which a current controller 72 is added. The current controller 72 is connected in series with the resistor 52 along the path from the power source 71 to the anode 13 and controls the amount of light during lighting by controlling the current flowing through the discharge tube 12 during lighting. is there.

  According to the second embodiment, as in the first embodiment, the reliability is improved by extending the life of the three-electrode long arc xenon discharge tube and the running cost is reduced. Thus, the cost of the entire apparatus is reduced, and the lighting power can be controlled so that a desired light amount can be obtained by monitoring the light amount during lighting by the current controller 72. Furthermore, low voltage discharge is possible without using a high voltage capacitor, and current control can be easily performed.

(Embodiment 3)
FIG. 10 shows a circuit configuration of a three-electrode long arc xenon discharge tube lighting device according to the third embodiment.

  The third embodiment is characterized in that a starting auxiliary capacitor 32 is provided separately from the lighting power source 71.

  The starting auxiliary capacitor 32 is provided between the power source 71 and the cathodes 14 a and 14 b of the three-electrode long arc xenon discharge tube 10. The resistors 61a and 61b are provided as balance resistors.

  The starting auxiliary capacitor power source 74 provided in the power source 71 is a power source for charging the starting auxiliary capacitor 32. The voltage of the starting auxiliary capacitor 32 charged by the starting auxiliary capacitor power source 74 is applied to the three-electrode long arc xenon discharge tube 10.

  When a trigger pulse voltage is applied to the trigger electrode 15, arc discharge is started, high voltage power is supplied from the starting auxiliary capacitor 32, and the three-electrode long arc xenon discharge tube 10 is started.

  Thus, the starting auxiliary capacitor 32, the anode 13, the discharge tube 12, the cathode 14a, the path passing through the starting auxiliary capacitor 32, the starting auxiliary capacitor 32, the anode 13, the discharge tube 12, the cathode 14b, and the starting auxiliary capacitor. A current flows through each of the paths passing through 32. When the voltage of the starting auxiliary capacitor 32 becomes lower than the output voltage of the current controller 72, the lighting power output from the lighting power supply capacitor 31 and controlled by the current controller 72 is supplied.

  The supplied lighting power includes the current controller 72, the diode 41 e, the anode 13, the discharge tube 12, the cathode 14 a, the balance resistor 61 a, the path passing through the capacitor 31 from the capacitor 31, the current controller 72, the diode 41 e, and the anode 13. The three-electrode long arc xenon discharge tube 10 lights up through the discharge tube 12, the cathode 14b, the balance resistor 61b, and the path passing through the capacitor 31, respectively.

  The capacitor 32 is charged by a current flowing through the path of the starting auxiliary capacitor power source 74, the resistor 53, the starting auxiliary capacitor 32, and the power source 71.

  Since the three-electrode long arc xenon discharge tube 10 can supply the high voltage power necessary for starting by the starting auxiliary capacitor 32, it is possible to more reliably start the two electrodes simultaneously.

  According to the third embodiment, as in the first and second embodiments, the reliability is improved by extending the life of the three-electrode long arc xenon discharge tube and the running cost is reduced. The cost is reduced and the cost of the entire apparatus is reduced.

  Furthermore, according to the third embodiment, as described above, since the three-electrode long arc xenon discharge tube 10 can supply the high voltage power required at the start-up by the auxiliary capacitor 32 for start-up, more reliable two-electrode simultaneous Lighting is performed.

  Furthermore, according to the third embodiment, low voltage discharge is possible without using a high voltage capacitor, and the current can be easily controlled.

(Embodiment 4)
FIG. 11 shows a circuit configuration of a three-electrode long arc xenon discharge tube lighting device according to the fourth embodiment.

  The fourth embodiment is characterized in that a three-electrode long arc xenon discharge tube lighting device has a function of switching the discharge electrode.

  A switch 73 is connected between the discharge-side electrode of the capacitor 31 and the cathode 14 a or 14 b of the three-electrode long arc xenon discharge tube 10. Only one side of the three-electrode long arc xenon discharge tube 10 can be turned on by selecting and switching one of the cathodes 14a and 14b as the cathode side for supplying lighting power by the switch 73.

  The lighting power supply capacitor 31 is charged by a current flowing through a path passing through the power source 71, the resistor 52, the capacitor 31, and the power source 71. Either one of the cathodes 14a or 14b is selected by the switch 73, and a lighting voltage is applied between the selected cathode 14a or 14b and the anode 13 by the charged capacitor 31.

  In this state, a trigger pulse is applied to the gate electrode of the trigger thyristor 21 of the trigger circuit and a trigger pulse voltage is applied to the trigger electrode 15, and arc discharge occurs between the selected cathode 14 a or 14 b and the anode 13. Lights up.

  In this way, only one of the cathodes 14a and 14b is discharged, and the other one is not discharged. Here, the switching of the cathodes 14a and 14b by the switch 73 may be performed alternately during lighting, or may be selectively performed based on the deterioration of the cathodes 14a and 14b.

  If the arc discharge is performed for a long time, the cathode is greatly deteriorated. Therefore, according to the fourth embodiment, the switching device 73 switches the cathode 14a or 14b during lighting to cause discharge, thereby reducing the deterioration of the cathodes 14a and 14b and reducing the deterioration of the three-electrode long arc xenon discharge tube 10. Life can be extended.

  For example, a trigger pulse voltage is applied to the trigger electrode 15 in a state in which the cathode 14 a is connected to the discharge side electrode of the capacitor 31 by the switch 73. After an arbitrary time has elapsed, the switch 73 cuts off the connection between the cathode 14a and the lighting device and connects the cathode 14b. Thereby, the arc discharge between the anode 13 and the cathode 14a moves between the anode 13 and the cathode 14b, and lighting continues. Such switching of the cathode during lighting may be performed only once or a plurality of times.

  The switching operation of the cathode in the switching device 73 is, for example, giving a pulse control signal output from the pulse controller 82 to the three-electrode long arc xenon discharge tube lighting device included in the lamp head 1 in the configuration shown in FIG. You may go on. Alternatively, it is possible to switch manually when the light is off.

  According to the fourth embodiment, by switching the two cathodes during lighting using a switch and causing discharge in one of them, the deterioration of the cathode is reduced and the three-electrode long arc xenon discharge tube 10 is lengthened. By extending the life, reliability is improved and running cost is reduced. Furthermore, low voltage discharge is possible without using a high voltage capacitor, and current control can be easily performed.

    The above embodiments are merely examples, and various modifications can be made within the technical scope of the present invention. For example, the present invention can also be applied when the polarity of the electrodes in the above embodiment is changed.

DESCRIPTION OF SYMBOLS 1 Lamp head 2 Air mass filter 4 1st baffle 5 2nd baffle 6 Solar cell module 10 3 electrode long arc xenon discharge tube 12 Discharge tube 13 Anode 14a, 14b Cathode 15 Trigger electrode 21 Trigger thyristor 22 Trigger capacitor 23 Trigger transformer 31, 31a , 31b Lighting power supply capacitor 32 Startup auxiliary capacitors 41a, 41b, 41e Diodes 51, 52, 53 Resistors 61a, 61b Balance resistor 71 Power source 72 Current controller 73 Switcher 74 Startup auxiliary capacitor power source

Claims (4)

A three-electrode long arc xenon discharge tube having a first electrode having one first polarity disposed in the central portion and second and third electrodes having second polarity respectively disposed at both ends; ,
A power source for generating lighting power to be supplied to the three-electrode long arc xenon discharge tube;
The first and second terminals of the power source, the first electrode, and the second and third electrodes are connected to the first and second terminals, respectively, and from the power source to turn on the three-electrode long arc xenon discharge tube. A three-electrode long arc xenon discharge tube lighting device for controlling the supply of lighting power between the first electrode and the second electrode, the first electrode and the third electrode;
Connected to the three-electrode long arc xenon discharge tube lighting device, a trigger pulse voltage is applied to the three-electrode long arc xenon discharge tube, and the first electrode, the second electrode, the first electrode, and the first electrode A trigger electrode for starting each arc discharge between the three electrodes,
The three-electrode long arc xenon discharge tube lighting device is:
A capacitor connected between a first terminal and a second terminal of the power source;
A first resistor connected between the second terminal and the second electrode, for balancing lighting power to the second electrode;
A second resistor connected between the second terminal and the third electrode for balancing lighting power to the third electrode;
A current controller that is connected between the first terminal and the first electrode and controls lighting power supplied to the first electrode based on a light amount detected by a sensor;
Have
The discharge power from the capacitor supplies lighting power to the second and third electrodes through the first and second resistors, respectively, thereby lighting the three-electrode long arc xenon discharge tube. Electrode long arc xenon discharge tube solar simulator. A three-electrode long arc xenon discharge tube having a first electrode having one first polarity disposed in the central portion and second and third electrodes having second polarity respectively disposed at both ends; ,
A power source for generating lighting power to be supplied to the three-electrode long arc xenon discharge tube;
The first and second terminals of the power source, the first electrode, and the second and third electrodes are connected to the first and second terminals, respectively, and from the power source to turn on the three-electrode long arc xenon discharge tube. A three-electrode long arc xenon discharge tube lighting device for controlling the supply of lighting power between the first electrode and the second electrode, the first electrode and the third electrode;
Connected to the three-electrode long arc xenon discharge tube lighting device, a trigger pulse voltage is applied to the three-electrode long arc xenon discharge tube, and the first electrode, the second electrode, the first electrode, and the first electrode A trigger electrode for starting each arc discharge between the three electrodes,
The three-electrode long arc xenon discharge tube lighting device is:
A capacitor connected between a first terminal and a second terminal of the power source;
The input side is connected to the second terminal, the output side is connected to the second electrode and the third electrode, and the second terminal is connected to the second electrode or the third electrode. A selector for selectively switching;
Have
The three-electrode long arc xenon discharge tube is lit by supplying lighting power to the second electrode or the third electrode selected by the switch by discharge from the capacitor. Long arc xenon discharge tube solar simulator. A three-electrode long arc xenon discharge tube having a first electrode having one first polarity disposed at a central portion and second and third electrodes having second polarities respectively disposed at both ends. In lighting method,
A capacitor is connected between a first terminal and a second terminal of a power source that generates lighting power to be supplied to the three-electrode long arc xenon discharge tube, and between the second terminal and the second electrode. A first resistor for balancing the lighting power to the second electrode, and the lighting power to the third electrode between the second terminal and the third electrode. A second resistor for balancing is connected, and the lighting power supplied to the first electrode is controlled between the first terminal and the first electrode based on the amount of light detected by the sensor. Connect the current controller to
The discharge power from the capacitor supplies lighting power to the second and third electrodes through the first and second resistors, respectively, and the three-electrode long arc xenon discharge tube is lit. A method for lighting an electrode long arc xenon discharge tube. A three-electrode long arc xenon discharge tube having a first electrode having one first polarity disposed at a central portion and second and third electrodes having second polarities respectively disposed at both ends. In lighting method,
A capacitor is connected between a first terminal and a second terminal of a power source that generates lighting power to be supplied to the three-electrode long arc xenon discharge tube, and the second terminal and the second electrode or the second terminal A switch for selectively switching the connection with the three electrodes, connecting the input side to the second terminal, connecting the output side to the second electrode and the third electrode,
A three-electrode long-arc xenon discharge tube is lit by supplying lighting power to the second electrode or the third electrode selected by the switch by discharging from the capacitor. Long arc xenon discharge tube lighting method.

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