Solar Power Injection Lock Power Synthetic Metal Halide Lamp

Abstract

The invention relates to the technical field of electric light source illumination and specifically discloses a solar power supply injection phase-locking power synthesis metal halide lamp. The metal halide lamp comprises a metal halide lamp tube, a solar power supply, a reference crystal oscillator, an oscillation driving chip, a push-pull amplifier, a push-pull oscillator, an addition coupler, a lamp tube trigger circuit, a frequency modulation signal generator and a lamp tube abnormal current detector. The oscillation driving chip is connected with the push-pull amplifier. Power synthesis is carried out on an output power transformer T1 and a push-pull oscillator output power transformer T3 through the addition coupler, and the synthesized power further undergoes voltage boost and is then fed into the lamp tube trigger circuit for turning the metal halide lamp tube on. Signals of the reference crystal oscillator are injected into the oscillation driving chip through a frequency divider for phase locking. After the power synthesis of the push-pull amplifier output power transformer T1 and the push-pull oscillator output power transformer T3, a cross-coupling injection-locking frequency pulls the push-pull oscillator to realize coherent synchronous phase locking, and thus large-power illumination is achieved, and luminance declination caused by power unbalance resulted from oscillation frequency change since temperature rise of a device is too high is avoided. The metal halide lamp is suitable for illumination occasions of the metal halide lamp powered by the solar power supply in a low-voltage and heavy-current manner.

Description

technical field [0001] The invention relates to the technical field of electric light source lighting, in particular to a solar power supply injection lock power synthesis metal halide lamp. Background technique [0002] Electronic ballasts in the prior art usually use LC or RC oscillators as the electric light source for metal halide lamps. The oscillation frequency generated is poorly stable due to temperature changes, which affects power instability and light intensity drops. Although the structure is simple and the cost is low. However, if the power supply voltage is low, the device current must be increased to obtain high-power lighting, resulting in a sharp increase in the power consumption of the oscillating power tube and an excessively high temperature rise, resulting in a change in the oscillation frequency. As a result, the power amplitude of the light will be unbalanced as the frequency changes. At the same time, when the large current passes through the coil, th...

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Problems solved by technology

[0002] Electronic ballasts in the prior art usually use LC or RC oscillators as the electric light source of metal halide lamps, and the oscillation frequency generated is poorly stabilized by temperature changes, which affects power instability and reduces light intensity. Although the structure is simple and the cost is low

However, if the power supply voltage is low, the current of the device must be increased to obtain high-power lighting, resulting in a sharp increase in the power consumption of the oscillating power tube and an excessive temperature rise, resulting in a change in the oscillating frequency. As a result, the power amplitude of the light will be unbalanced as the frequency changes.

At the same time, when the large current passes through the coil, the temperature rises and the magnetic permeability decreases, and the magnetic saturation inductance becomes smaller and the impedance tends to zero. The working time of the lamp is proportional to the temperature rise, and the temperature rise accelerates the aging of the device. Burning out components shortens service life

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