CN104105318B - Solar power supply double-push injection-locking power synthesis fluorescent lamp - Google Patents

Abstract

The invention relates to the technical field of electric light source illumination and specifically discloses a solar power supply double-push injection-locking power synthesis fluorescent lamp. Two self-sustained oscillation chips 4, 6 are together connected to a timing resistor R2 and a capacitor C4 for synchronous oscillation. A self-sustained oscillation chip 4, an output power transformer T1 of a push-pull amplifier A, a self-sustained oscillation chip 6, and an output power transformer T2 of a push-pull amplifier B are fed into an addition coupler for power synthesis. The synthesized power is fed into a lamp tube for turning the lamp tube on. Signals of a reference crystal oscillator are injected into RC oscillators of the two self-sustained oscillation chips 4, 6 through a frequency divider for phase locking. Excessive temperature rise of the device, changes of oscillation frequency, imbalanced power and dim light are avoided. The fluorescent lamp is suitably used in illumination occasions as a fluorescent lamp powered by a solar low-voltage heavy-current power supply.

Description

Sun-generated electric power is double to inject lock power combing fluorescent lamp

Technical field

The present invention relates to electric source lighting technical field, specifically a kind of sun-generated electric power is double to inject lock power combing fluorescence Lamp.

Background technology

Prior art generally uses LC or RC oscillator as fluorescent light, and the frequency of oscillation of generation is subject to temperature change stable Property difference impact the unstable light intensity of power decline, the fluorescent lamp operation that especially sun-generated electric power is powered low-voltage, high current although The electric ballast of orthogonal DC-AC inversion, features simple structure, low cost.Because supply voltage is low, high-power illumination to be obtained certainly will Increase device current, cause hunting power pipe power consumption sharp increase temperature rise too high lead to frequency of oscillation change, result can make light with frequency Rate change power magnitude is unbalance.Meanwhile, high current is passed through coil temperature rise high magnetic permeability and is declined, and saturation inductors amount diminishes resistance Anti- trend zero, light fixture working time and temperature rise direct ratio, temperature rise accelerates device aging, gently then under the unstable brightness of lamp luminescence Fall, heavy then burn out device reduction of service life.Two vibration inverter power superposition synthesis of Authorization Notice No. CN202068650U are dragged Dynamic fluorescent lamp, solves device power capacity limit.But it is desirable to power combing oscillating voltage phase place is consistent, overcome non-linear mutual Adjusting power is unbalanced.

Content of the invention

It is an object of the invention to provide sun-generated electric power low-voltage, high current are powered, high frequency stabilization Phase synchronization is vibrated in inversion A kind of sun-generated electric power double inject lock power combing fluorescent lamp.

The technology of the present invention solution is：Including sun-generated electric power, fluorescent tube, benchmark crystal oscillator, frequency divider, two self-vibrations Swing chip, recommend inverter A, recommend inverter B, be added coupler T₃, tube circuit, wherein, benchmark crystal oscillator is by quartz crystal Resonator, two phase inverters and resistance, electric capacity composition, first phase inverter input and output two ends bridging resistance biasing, and point Not and connect ground capacity, meanwhile, the quartz-crystal resonator of also bridging series connection trimmer, benchmark crystal oscillator output signal is through second Individual phase inverter accesses frequency divider, and self-oscillation chip includes RC oscillator, recommends inverse changing driving circuit, lamp failure protection controller SD, two self-oscillation chip RC oscillator connecting resistance R altogether₂, electric capacity C₄Synchronized oscillation, output is respectively through recommending inverse changing driving circuit Connect recommending inverter A, recommending inverter B by two high-power MOS FETs composition, self-oscillation chip and recommend inverse Become device A output power transformer T₁Inductance L₂With self-oscillation chip and recommend inverter B output power transformer T₂Inductance L₅By phase Plus coupler T₃Inductance L₆Power combing, inductance L₇Rise crimping tube circuit fluorescent tube starter, the divided device of benchmark crystal oscillation signal Two self-oscillation chip RC oscillator C of injection_TEnd locking phase, tube circuit lamp anomaly detection signal accesses two self-oscillation cores Piece lamp failure protect controller SD, sun-generated electric power connect based Quasi-crystals shake, frequency divider, self-oscillation chip and recommend inverter A, from Vibration chip and the power end recommending inverter B.

Wherein, tube circuit by fluorescent tube filament one end through resonant capacitance C₉, inductance L₈Access and be added coupler T₃Inductance L₇, and pass through lamp abnormal current mutual inductance magnet ring ground connection, fluorescent tube filament other end parallel connection starting capacitor C₁₀, Current Mutual Inductance magnet ring Inductance L₉Voltage is through diode VD₁Detection, electric capacity C₁₁, resistance R₁₀Filtering connects two self-oscillation chip lamp failure protection controllers SD；

Sun-generated electric power photovoltaic battery panel E₁Output series connection blocking diode VD₂, relay contact J-1 connect battery E₂ With the fluorescent lamp DW, battery E being connected to switch S₂Overvoltage controls sample resistance R₁₂、RP₁、R₁₃Base chip IC during access₅High level Triggering end TH, under-voltage control sample resistance R₁₄、RP₂、R₁₅Access low level triggering end TL, when base chip IC₅Output contact relay, Battery seals in quick acting fuse F, and takes over control reversal connection diode VD₃.

The present invention produces good effect：Solve sun-generated electric power low-voltage, high current and power double to push away inversion and vibrate high frequency stabilization Phase synchronization power combing, reaches single self-oscillation and recommends the high-power fluorescent lamp illumination that inverter is difficult to obtain, it is to avoid device Temperature rise high oscillation frequency changes power imbalances, and steady light increases the service life.

Brief description

Fig. 1 technical solution of the present invention theory diagram

Fig. 2 benchmark crystal oscillating circuit

Fig. 3 sun-generated electric power is double to inject lock power combing fluorescent lamp circuit

Fig. 4 solar-electricity source circuit

Specific embodiment

With reference to Fig. 1,2,3,4 (Fig. 3 by self-oscillation chip and as a example recommending inverter A, self-oscillation chip and recommend inverter B is identical with A), the specific embodiment of the invention and embodiment：Including sun-generated electric power 1, fluorescent tube 9, benchmark crystal oscillator 2, frequency dividing 3, two self-oscillation chips 4,6 of device, recommend inverter A5, recommend inverter B7, are added coupler T₃8th, tube circuit 10, its In, benchmark crystal oscillator 2 is by quartz-crystal resonator JT, two inverter ics₁、IC₂And resistance R₁, electric capacity C₀、C₁、C₂Composition, first Individual inverter ic₁Input and output two ends bridging resistance R₁Biasing, and respectively and connect ground capacity C₁、C₂, meanwhile, also bridging string Connection trimming capacitor C₀Quartz-crystal resonator JT, benchmark crystal oscillator 2 output signal is through second inverter ic₂Access frequency divider 3, Self-oscillation chip IC₄IR2157 includes RC oscillator, recommends inverse changing driving circuit, lamp failure protection controller SD, two self-vibrations Swing the RC oscillator connecting resistance R altogether of chip 4,6₂, electric capacity C₄Synchronized oscillation, output connects all through recommending inverse changing driving circuit respectively By two high-power MOS FET Q₁、Q₂The recommending inverter A5, recommend inverter B7 of composition, self-oscillation chip 4 and recommending Inverter A5 output power transformer T₁Inductance L₂With self-oscillation chip 6 and recommend inverter B7 output power transformer T₂Inductance L₅By addition coupler T₃8 inductance L₆Power combing, inductance L₇Rise crimping tube circuit 10 fluorescent tube 9 starter, benchmark crystal oscillator 2 The divided device of signal 3 divides ÷ N reference signal f₀Electric capacity C₃、C₄Partial pressure injects the RC oscillator C of two self-oscillation chips 4,6_TEnd Locking phase, tube circuit 10 lamp anomaly detection signal accesses two self-oscillation chips 4,6 lamp failure protection controller SD, the sun Power supply 1 can connect based Quasi-crystals and shake 2, frequency divider 3, self-oscillation chip 4 and recommend inverter A5, self-oscillation chip 6 and recommend inversion Device B7 power end+V.

IC₄Pin mark function：V_CCPower end, C_TMeet oscillator timing capacitor C₄, R_TMeet oscillator timing resistor R₂, H_ODrive Dynamic Q₁, L_ODrive Q₂, CS current detecting, the protection of SD lamp failure controls, and COM is grounded.

IC₅Pin mark function：V_CCPower end, TL low level triggers, and TH high level triggers, V_MRReset, Vc voltage controls, D_ISDischarge end, V₀Output end, GND is grounded.

Sun-generated electric power is by resistance R₁₁Step-down, electric capacity C₇Filtering, supplies self-oscillation chip IC₄Power supply V_CCProduce vibration, warp H_O、L_OInverter, high-power MOS tube Q are recommended in driving₁、Q₂Conducting, cut-off half cycle in turn, power output connects addition coupler and pushes away Draw the synthesis of inverter B power output.Two inverter power synthesis drag large-power lamp, and dilatation is reliable, but require two certainly Vibration chip oscillating voltage phase place is consistent, unbalanced to eliminate non-linear intermodulation power, obtains stable power output.For this reason, Introduce injection phase-locking and solve power combing Phase synchronization technology.

It is the integral multiple of tracking lock frequency of oscillation based on injection reference frequency, or frequency of oscillation is the integer of reference frequency Times, the high wen-frequency characteristics quartz resonator of reference signal frequency dividing injection apolegamy upper frequency is it is easy to lock tens of to hundreds of kilohertzs LC or RC oscillator.Frequency divider IC₃Binary system or decade counter frequency dividing.Benchmark crystal oscillator quartz resonator quality factor are high, frequently Rate be subject to temperature change minimum, highly stable can as locking reference signal.

Reference signal divided injection self-oscillation chip C_TEnd locking phase.Unimplanted reference signal self-oscillation chip RC shakes Swing device and produce free oscillation frequency, injection reference signal RC oscillating voltage and its Vector modulation, non-linear by self-oscillation chip Frequency conversion locking phase, oscillator signal only has the phase difference of a fixation with injection reference signal.Synchronization bandwidth is with injecting power just With RC oscillator loaded Q inverse ratio, because reference signal injects the input of RC oscillator, high gain, small-power locks ratio. Two self-oscillation chip RC oscillator connecting resistance R altogether₂, electric capacity C₄Synchronized oscillation, locking time is fast.

Without voltage-controlled tuning, phase discriminator, loop filter, circuit structure is simple, superior performance, fringe cost for injection phase-locking Low.Injection phase-locking there substantially is not difference with looped phase locking, and simply structure is different with the course of work, is suitable to power combing light fixture stable Frequency of oscillation Phase synchronization, stablizes power output and avoids the too high power imbalances of device temperature rise, increase the service life.It is added coupler T₃Inductance L₆Push away output power transformer T by double₁And T₂Inductance L₂, inductance L₅Anti-phase exciting current superposition, 180 ° of phase difference is low Subharmonic is cancelled out each other, and output current conversion doubles summation and delivers to lamp load, balance resistance R when two electric currents are equal₉Inactivity Loss.

Lamp abnormal current mutual inductance ring inductance L₉Induced potential diode VD₁Detection, electric capacity C₁₁, resistance R₁₀Filtering is through resistance R₇、R₈Access two self-oscillation chip lamp failures and protect controller, turn off RC oscillator, protect double push-pull inverter power pipe, exempt from It is damaged.Lamp exception high current resistance R₆Pressure drop is through resistance R₄, electric capacity C₈Opening chip CS end, and then protection pair pushes away inverter power Pipe.

Control that sun-generated electric power is under-voltage, base chip IC when battery tension is less than₅555 low level triggering end TL samplings 1/ 3V_CCWhen, when base chip set, relay J adhesive, contact J-1 connects battery and charges, when battery tension is sufficient, excessively voltage-controlled Voltage processed is higher than that high level triggering end HL samples 2/3V_CC, when base chip reset, relay releasing contact J-1, cut off solar-electricity Charge to battery overvoltage in pond.Illuminate consumption electrical energy accumulator voltage with light fixture DW and be reduced to set voltage, solar cell Recover to charge, make battery tension be maintained at illumination desirable value, switch S controls lamp illumination.

Blocking diode VD₂Unilateal conduction prevents battery to solar cell reverse charge, diode VD₃When battery is anti- Connect conducting short circuit, quickly blow fuse F protection battery.Electric capacity C₁₂、C₁₃Decoupling, resistance R₁₆, electric capacity C₁₄, Zener diode VD₄ For when base chip power, diode VD₅The backward voltage that suppression relay J coil adhesive, release produce.

Embodiment sun-generated electric power voltage 30V, operating current 2.2A, double power outputs that push away synthesize coupling 55W fluorescent lamp D, Inversion efficiency 83%, light is stable.

Claims (2)

1. a kind of sun-generated electric power is double injects lock power combing fluorescent lamp, and including sun-generated electric power, fluorescent tube, its feature exists In：Also include benchmark crystal oscillator, frequency divider, the self-oscillation chip of two models IR2157, recommend inverter A, recommend inverter B, addition coupler T₃, tube circuit, wherein, benchmark crystal oscillator is by quartz-crystal resonator, two phase inverters and resistance, capacitance group Become, first phase inverter input bridges resistance biasing with output two ends, and first phase inverter input is connected respectively with output two ends Electric capacity C₁、C₂One end electric capacity C₁、C₂The other end is grounded, and first phase inverter input also bridges, with output two ends, fine setting electricity of connecting The quartz-crystal resonator holding, benchmark crystal oscillator output signal accesses frequency divider through second phase inverter, and self-oscillation chip includes RC Oscillator, recommend inverse changing driving circuit, lamp failure protection controller SD, two self-oscillation chip RC oscillators connecting resistance R altogether₂、 Electric capacity C₄Synchronized oscillation, output connects by two high-power MOS FET compositions through recommending inverse changing driving circuit respectively Recommend inverter A, recommend inverter B, self-oscillation chip and recommend inverter A output power transformer T₁Inductance L₂With self-oscillation Chip and recommend inverter B output power transformer T₂Inductance L₅By addition coupler T₃Inductance L₆Power combing, inductance L₇Boosting Connect tube circuit fluorescent tube starter, the divided device of benchmark crystal oscillation signal injects two self-oscillation chip RC oscillator C_TEnd locking Phase place, tube circuit lamp anomaly detection signal accesses two self-oscillation chip lamp failures and protects controller SD, and sun-generated electric power is even Connect benchmark crystal oscillator, frequency divider, self-oscillation chip and recommend inverter A, self-oscillation chip and the power end recommending inverter B；

Tube circuit is by fluorescent tube filament one end through resonant capacitance C₉, inductance L₈Access and be added coupler T₃Inductance L₇, and pass through Lamp abnormal current mutual inductance ring inductance L₉Ground connection, fluorescent tube filament other end parallel connection starting capacitor C₁₀, lamp abnormal current mutual inductance Ring inductance L₉Voltage is through diode VD₁Detection, electric capacity C₁₁, resistance R₁₀Filtering connects two self-oscillation chip lamp failure protections and controls Device SD.

2. sun-generated electric power according to claim 1 double inject lock power combing fluorescent lamp it is characterised in that：Solar-electricity Source is by photovoltaic battery panel E₁Output series connection blocking diode VD₂, relay contact J-1 connect battery E₂Switch the glimmering of S with being connected to Light lamp DW, battery E₂Overvoltage controls sample resistance R₁₂、RP₁、R₁₃Base chip IC during access₅High level triggering end TH, under-voltage control Sample resistance R processed₁₄、RP₂、R₁₅Access low level triggering end TL, when base chip IC₅Output contact relay, battery seals in quickly Fuse F, and take over control reversal connection diode VD₃.