Solar energy power source four-full-bridge injection locking power synthesis high pressure sodium lamp

Abstract

The invention relates to the technical field of electric light source lighting, in particular to a solar energy power source four-full-bridge injection locking power synthesis high pressure sodium lamp. Signals are fed into an adding coupler TB1 through a self-oscillation chip A and an output power transformer T1 of a full-bridge inverter A' and through a self-oscillation chip B and an output power transformer T2 of a full-bridge inverter B', signals are fed into an adding coupler TB2 through a self-oscillation chip C, an output power transformer T3 of a full-bridge inverter C', a self-oscillation chip D and an output power transformer T4 of a full-bridge inverter D', the signals of the adding coupler TB1 and the signals of the adding coupler TB2 are fed into an adding coupler TB3 to conduct power synthesis, the power synthesis is conducted, the signals are fed to a lamp tube trigger circuit and a lamp tube starter, signals of a benchmark crystal oscillator are injected into the four self-oscillation chips through a frequency divider so as to enable phase positions to be locked and power to be stably output, and lamplight descending caused by excessive temperature rising, oscillation frequency changes and power imbalance of a device is avoided. Sawtooth wave signals of a frequency-modulated signal generator are connected into the four self-oscillation chips to restrain lamp flickering in a frequency-modulation mode, and signals of a lamp tube abnormal current detector are connected with SD end protective power tubes of the four self-oscillation chips. The solar energy power source four-full-bridge injection locking power synthesis high pressure sodium lamp is suitable for lighting occasions with the solar energy power source high-power high pressure sodium lamps.

Description

technical field [0001] The invention relates to the technical field of electric light source lighting, in particular to a solar power source four-full bridge injection-lock power synthesis high pressure sodium lamp. Background technique [0002] Electronic ballasts in the prior art usually use LC or RC oscillators as the electric light source for high-pressure sodium lamps. The oscillation frequency generated is affected by poor temperature stability and the power is not stable enough, resulting in a decrease in light intensity. Although the structure is simple and the cost is low. In order to obtain high-power lighting, it is necessary to increase the current of the device, so that the power consumption of the oscillating power tube will increase sharply and the temperature will rise too high, 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...

AI Technical Summary

Problems solved by technology

Nonlinear intermodulation affects power imbalance due to lack of phase alignment of the oscillating voltage

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