One of the most critical aspects of a small satellite is the electrical power system (EPS) since the electrical power is necessary for the satellite to operate correctly during its predefined lifetime. The electrical power system consists mainly of solar cells, batteries, voltage converters and protection circuits. The electrical power system is responsible of providing stable power to the rest of the satellite subsystems.In satellite electrical power systems, overcurrent protection is now becoming an important function handled by the power distribution module (PDM). This paper proposes a method to evaluate the suggested protection. With the proposed procedure we should be able to verify that every possible failure does not travel through the EPS and cause a fatal degradation of the electrical power system. This will allow a complete evaluation of functionality of the protection hardware.This paper discusses the design and implementation of the power distribution module (PDM) for the coming generation of small satellites for the Algerian Space Agency (ASAL). The design must provide a reliable protection for the subsystems from the overcurrent associated with a device failure.

中文翻译：

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采用过流保护的配电系统的设计与实现

小型卫星最关键的方面之一是电力系统 (EPS)，因为电力是卫星在其预定寿命期间正确运行所必需的。电力系统主要由太阳能电池、蓄电池、电压转换器和保护电路组成。电力系统负责为其余的卫星子系统提供稳定的电力。在卫星电力系统中，过流保护现在正成为配电模块（PDM）处理的一项重要功能。本文提出了一种评估建议保护的方法。通过建议的程序，我们应该能够验证每个可能的故障都不会通过 EPS 并导致电力系统的致命退化。这将允许对保护硬件的功能进行全面评估。本文讨论了阿尔及利亚航天局 (ASAL) 下一代小型卫星的配电模块 (PDM) 的设计和实施。设计必须为子系统提供可靠的保护，防止与设备故障相关的过电流。