CN2896787Y

CN2896787Y - High-performance xenon lamp dc. power supply

Info

Publication number: CN2896787Y
Application number: CNU2006200239189U
Authority: CN
Inventors: 陈锡鹏; 陈允瑕
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-03-30
Filing date: 2006-03-30
Publication date: 2007-05-02
Anticipated expiration: 2016-03-30

Abstract

A DC power supply for high-performance xenon lamps, pertaining to the technical field of power supply, to provide highly efficient power to, strong anti-interference capabilities and easy adjustment of xenon lamps. Technical proposal: the DC power supply comprises a three-phase leakage transformer, a saturable reactor and a control circuit, wherein output end of the three-phase leakage transformer is connected with the saturable reactor; output of the saturable reactor is connected with a rectifier, and output of the rectifier is the power output end; the control circuit consists of three parts, sampling, comparison & amplification, and analog switch; a transformer coil is connected in the power output loop; a DC control winding is winded on shared core of the saturable reactor and the current is controlled by the control circuit. Through rational combination of leakage transformer techniques and adjustable reactor techniques, the utility model realizes the provision of highly efficient power to, strong anti-interference capabilities and easy adjustment of xenon lamps by making use of the advantages of leakage transformer techniques, namely strong anti-interference capabilities, small size and low wear and tear, as well as characteristics of adjustable reactor techniques, namely power-sustained adjustment.

Description

A kind of high-performance xenon lamp DC power supply

Technical field

The utility model relates to one-kind of xenon lamp power supply, belongs to the DC power supply technical field.

Background technology

Xenon lamp is the light that fills xenon in the fluorescent tube, claims high-intensity discharge lamp or gaseous discharge lamp again.Xenon lamp has that brightness is big, the life-span is long, consumed power is few, near advantages such as daylight sources, therefore obtain more and more widely application in various fields such as video equipment, Medical Devices, aviation and automotive lighting, industrial or agricultural and domestic lightings.

A typical xenon lamp power supply is made up of transformation of electrical energy unit (based on transformer), rectification unit and output regulon three parts, after it connects circuit, pass through transformer, should in several microseconds, boost to the high-voltage pulse more than 20,000 volts, be added between the metal electrode in the bulb, material (xenon, a spot of mercury vapor, the metal halide) ionization in electric arc that fills in the exciter bulb produces light.The major function of output regulon (or claim electronic control unit) is the operating current of restriction xenon lamp bulb, the ignition voltage more than 20,000 volts is provided and keeps the low-voltage (about 80 volts) of work to bulb.Because above-mentioned startup and the work characteristics of xenon lamp, when steady operation, can provide the characteristic of stabling current with regard to requiring high-performance xenon lamp DC power supply to have higher transient voltage can be provided when beginning to encourage, to adapt to this rapid variation and to require the lighting apparatus of the state that progressively tends towards stability.

Therefore because the xenon lamp application scenario more and more widely, power is also increasing, stability, reliability, the anti-interference of its power supply is had higher requirement, and requires again simultaneously to accomplish as far as possible that volume is little, economic utilization rate height, does not pollute.It is several that the xenon lamp constant-current supply of Cun Zaiing mainly contains Switching Power Supply, magnetic amplifier type rectifier power source and the tap formula rectifier power source etc. of adjusting a wage scale in the market.Wherein, the moulding of Switching Power Supply is little, in light weight, electrical property is good, but its cost of manufacture height, especially large power supply, and cost is higher, and the Switching Power Supply failure rate is higher, antisurge ability, maintenance cost height.

The magnetic amplifier type rectifier power source stable and reliable for performance, can be successively electricity adjust size of current, the output ripple coefficient is little, current stabilization safeguards and uses all easily that cost is also lower.But this kind power volume is big, Heavy Weight, hear rate height, efficient are low.

Tap is adjusted a wage scale, and the volume of formula rectifier power source is little, in light weight, hear rate power is little, pollution-free, stable and reliable for performance, and the antisurge ability is strong, and failure rate is little, is simple and easy to safeguard.The operation though the shortcoming of unmatched two kinds of voltages, electric current adjustment need be cut off the power supply, program is loaded down with trivial details.

In sum, various high-performance xenon lamp DC power supply in the market all have different shortcomings, design a kind of novel high-performance xenon lamp DC power supply for the advantage of performance xenon lamp, apply and be very important.

Summary of the invention

The purpose of this utility model provide a kind ofly have that power is big, efficient is high, antijamming capability is strong, be convenient to adjust, volume is little, price is low high-performance xenon lamp DC power supply.

The technical scheme that addresses the above problem is:

A kind of high-performance xenon lamp DC power supply, it is made up of three-phase leakage transformer B1, saturable reactor DK, rectification circuit and control circuit, wherein, the input termination three-phase alternating-current supply of three-phase leakage transformer B1, output connects the corresponding windings of saturable reactor DK respectively, the output of saturable reactor DK connects rectifier, and rectifier is output as the output of DC power supply; Described saturable reactor DK is provided with DC control winding L 2, and DC control winding L 2 is on the shared iron core of saturable reactor DK, and winding two is terminated at the dc output end of rectification circuit ZL2, is provided with regulating resistor R2 in this direct current power supply loop.

Above-mentioned high-performance xenon lamp DC power supply, described three-phase leakage transformer B1 is made up of iron core and the primary and secondary coil of three-phase, its core structure is three horizontal four-column type structures, on the central cores tongue between per two posts, be wound with the primary and secondary coil of a phase, described primary and secondary coil parallel arranged is provided with magnetic shunt between primary and secondary coil.

Above-mentioned high-performance xenon lamp DC power supply, set up automatic control circuit, described automatic control circuit is made up of sampling part, comparison amplifier section, selector switch K1 and analog switch K2, described sampling part is current transformer D1, mutual inductor coil is connected in the DC power supply output loop, and the instrument transformer secondary coil connects the input of comparison amplifier section behind rectification circuit ZL1; Relatively amplifier section is made up of transport and placing device Y1, Y2, transport and placing device Y1 is connected into comparator circuit, transport and placing device Y2 is connected into amplifier circuit, both are electrically connected successively, are connected to potentiometer R1, the output termination analog switch K2 of transport and placing device Y2 at the forward end of transport and placing device Y1, analog switch K2 one end ground connection, the other end is connected on the fixed contact of selector switch K1, another fixed contact ground connection of selector switch K1, and its moving contact knee-joint is in the dc output end of rectification circuit ZL2.

Above-mentioned high-performance xenon lamp DC power supply, described saturable reactor DK is the three saturated Regulatable reactor that link.

Adopt the xenon lamp DC power supply of this structure, leakage transformer technology and saturated Regulatable reactor technology are organically combined, utilize the leakage transformer antijamming capability strong, volume is little, loss is low, free of contamination advantage, and the characteristics of can not power down adjusting in conjunction with saturated Regulatable reactor, utilize automatically and manual dual controlling organization the purpose of design of realize requiring that xenon lamp DC power supply power is big, efficient is high, antijamming capability is strong, being convenient to adjust.In addition, the utility model volume is little, price is low, durable, be convenient to promote.

Description of drawings

Fig. 1 is an electrical schematic diagram of the present utility model;

Fig. 2 is the structural representation of three-phase leakage transformer.

Each mark is as follows among the figure: iron core 1, primary coil 2, secondary coil 3, magnetic shunt 4, side column 5, iron tongue 6, three-phase leakage transformer B1, saturable reactor DK, transport and placing device Y1, Y2, potentiometer R1, regulating resistor R2, current transformer D1, DC control winding L 2, selector switch K1, analog switch K2, reactor L1, electrochemical capacitor C1, rectification circuit ZL1, rectification circuit ZL2.

Embodiment

Show among the figure that high-performance xenon lamp DC power supply is made up of three-phase leakage transformer B1, saturable reactor DK, control circuit.

It is little that three-phase leakage transformer B1 self has a strong volume of antijamming capability, loss is low, free of contamination advantage, simultaneously owing to have the leakage field characteristic, the shortcoming that volume is big and heating is high that is connected with saturated Regulatable reactor DK and can improves saturated Regulatable reactor DK, based on this kind advantage, this high-performance xenon lamp DC power supply can power do bigger, and can improve raw-material utilance, reduce waste.What Fig. 2 showed is a kind of three-phase and four-pole leakage transformer, and its iron core is three horizontal four-column type structures, and so-called three horizontal four posts are meant that transformer is made up of three horizontal iron cores and four perpendicular iron cores.When the iron core of this structure of assembling, can adopt multilayer E font lamination 1 staggered horizontal folded forming, each layer laterally is arranged in order by three E font laminations 1, and the direction of three E font laminations of another layer is opposite.When overlapping, two-layer mutually to the stagger width of a side column 5 of both sides, the overlapping alignment of bilevel centre two posts, window is used to place winding.

Primary coil 2, secondary coil 3 on the central horizontal iron core 6 of center-to-center, are phases between per two posts respectively, and its primary and secondary coil is placed side by side, is inserted with magnetic shunt 4 between primary coil 2, secondary coil 3.The effect of magnetic shunt is to increase leakage inductance, to improve the antijamming capability of transformer, obtains stable output.The cross-sectional area of magnetic shunt 4 can be selected according to the designing requirement of transformer, and can regulate.

Saturable reactor DK is the three saturated Regulatable reactor that link, and it has three link controllable impedance LA, LB, LC, can regulate output voltage values, therefore can remove the adjusting tap among the three-phase leakage transformer B1, realizes that not power down regulates.

Control circuit is made up of sampling part, comparison amplifier section and analog switch K2.The current transformer D1 of sampling part is connected in the direct current output loop, and it is monitored in real time to output current signal, will deliver to the comparison amplifier section after the induced signal rectification.Induced signal is compared, is amplified by the transport and placing device Y1, the Y2 that compare amplifier section 3, controls analog switch K2 then.Forward end at transport and placing device Y1 is connected to potentiometer R1, regulates the resistance of R1 and can carry out the setting of output voltage.Analog switch K2 shown in the figure is a phototriode, certainly, also can adopt other device, as relay or electronic switch, or the like.DC control winding L 2 is exported a direct current magnetomotive force to saturable reactor DK on the shared iron core of saturable reactor DK, thereby changes the size of reactance.Selector switch K1 is used to carry out automatically and hand shift is selected, and b is manual, and manual is the simplest control circuit; A is an automatic transmission, can carry out automatic and manual comprehensive regulation when a shelves.

The regulating resistor R2 that is provided with in the direct current power supply loop is used to regulate the electric current of control winding L 2, except that adopting this mode, also can adopt other control methods.

Also be connected to the DC filtering circuit that reactor L1 and electrochemical capacitor C1 form at the output of saturable reactor DK, it makes the direct current of output more straight.

As we can see from the figure, this high-performance xenon lamp DC power supply organically combines leakage transformer technology and saturated Regulatable reactor technology.The three-phase leakage transformer is formed prime jointly with saturated Regulatable reactor and is exchanged out-put supply, and wherein, saturated Regulatable reactor realizes not power down adjustment as the actuator of controlling organization.The three phase rectifier mode is a three-phase bridge, and ripple coefficient is low, no excessive loss.Automatic control circuit is exported direct current and is monitored in real time, and manual control mechanism can be exported setting.

Claims

1. high-performance xenon lamp DC power supply, it is characterized in that, it is by three-phase leakage transformer B1, saturable reactor DK and control circuit are formed, wherein, the input termination three-phase alternating-current supply of three-phase leakage transformer B1, output connects the corresponding windings of saturable reactor DK respectively, the output of saturable reactor DK connects rectifier, rectifier is output as the output of DC power supply, described saturable reactor DK is provided with DC control winding L 2, DC control winding L 2 is on the shared iron core of saturable reactor DK, and winding two is terminated at the dc output end of rectification circuit ZL2, is provided with regulating resistor R2 in this direct current power supply loop.

2. high-performance xenon lamp DC power supply according to claim 1, it is characterized in that, described three-phase leakage transformer B1 is made up of iron core and the primary and secondary coil of three-phase, its core structure is three horizontal four-column type structures, on the central cores tongue between per two posts, be wound with the primary and secondary coil of a phase, described primary and secondary coil parallel arranged is provided with magnetic shunt between primary and secondary coil.

3. high-performance xenon lamp DC power supply according to claim 2, it is characterized in that, set up automatic control circuit, described automatic control circuit is made up of sampling part, comparison amplifier section, selector switch K1 and analog switch K2, described sampling part is current transformer D1, mutual inductor coil is connected in the DC power supply output loop, and the instrument transformer secondary coil connects the input of comparison amplifier section behind rectification circuit ZL1; Relatively amplifier section is made up of transport and placing device Y1, Y2, transport and placing device Y1 is connected into comparator circuit, transport and placing device Y2 is connected into amplifier circuit, both are electrically connected successively, are connected to potentiometer R1, the output termination analog switch K2 of transport and placing device Y2 at the forward end of transport and placing device Y1, analog switch K2 one end ground connection, the other end is connected on the fixed contact of selector switch K1, another fixed contact ground connection of selector switch K1, and its moving contact knee-joint is in the dc output end of rectification circuit ZL2.

4. high-performance xenon lamp DC power supply according to claim 3 is characterized in that, described saturable reactor DK is the three saturated Regulatable reactor that link.