High-power laser constant current source circuit for space navigation

Abstract

The invention discloses a high-power laser constant-current source circuit for space navigation, which comprises a plurality of Superboost constant-current driving power supply modules, which are connected in parallel and a plurality of high-voltage storage battery packs, the input end of each Superboost constant-current driving power supply module being correspondingly connected to the two ends of one high-voltage storage battery pack in parallel; and a plurality of laser load power supply pump modules, wherein the output end of each Superboost constant current driving power supply module is correspondingly connected with one laser load power supply pump module, and each Superboost constant-current driving power supply module is used for driving the corresponding laser load power supply pump module in a constant-current manner. The driving power supply has the characteristics of high stability, high power, high efficiency and high power density, and meets the performance requirements of the laser load for space navigation on the driving power supply.

Description

technical field [0001] The invention relates to the field of power supply for space laser loads, in particular to a constant current source circuit for a high-power laser used in aerospace. Background technique [0002] With the continuous development of semiconductor laser technology, semiconductor lasers have entered the field of high current from the traditional small current field, and are widely used in laser radar, laser navigation, laser ranging and other fields. Most of the working methods of semiconductor lasers are excited by current injection. The load characteristics of the laser are diode characteristics. By applying forward current, the excited atoms are controlled to generate laser output. Therefore, the performance of the laser constant current drive power directly affects the performance of the laser, and the development of a stable and reliable constant current drive power is very important for the normal operation of the entire laser. [0003] In recent y...

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Problems solved by technology

The total power of the space laser load is 86.4KW, the on-orbit cycle works for 2mins, and the work cycle interval is 3~4h. The existing constant current power supply for aerospace has a power density of no more than 1000W / kg, so the weight of a single power supply for the laser load exceeds 100kg , the satellite platform cannot provide such a huge resource, and cannot guarantee the on-orbit implementation of the load distribution scheme

[0004] At present, most of the high-power constant current source circuits that have been disclosed are long-term stable load output. Due to the limitations of the space environment on the weight, volume, and operating conditions of the load drive power supply, the constant current source circuit for space laser loads needs to be further developed.

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