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International Space Station power reinitialization

机译：国际空间站电力重新初始化

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The photovoltaic (PV) module on the International Space Station (ISS) has been operating since November 2000 and supporting electric power demands of the ISS and its crew of three. The PV module contains photovoltaic arrays that convert solar energy to electrical power, and an integrated equipment assembly (IEA) that houses electrical hardware and batteries for electric power regulation and storage. Each PV module contains two independent power channels for fault tolerance. Each power channel contains three batteries in parallel to meet its performance requirements and for fault tolerance. Each battery consists of 76 Nickel-Hydrogen (Ni-H/sub 2/) cells in series. These 76 cells are contained in two orbital replaceable units (ORU) connected in series. On-orbit data are monitored and trended to ensure that all hardware is operating normally. Review of on-orbit data showed that while five batteries are operating very well, one is showing signs of mismatched ORUs. The cell pressure in the two ORUs differs by an amount that exceeds the recommended range. The reason for this abnormal behavior may be that the two ORUs have a different use history. An assessment was performed and it was determined that capacity of this battery would be limited by the lower pressure ORU. Steps are being taken to reduce this pressure differential before battery capacity drops to the point of affecting its ability to meet performance requirements. As a first step, a battery reinitialization procedure was developed to reduce this pressure differential. The procedure was successfully carried out on-orbit and the pressure differential was reduced to the recommended range. This paper describes the battery performance and the consequences of mismatched ORUs that make a battery. The paper also describes the re-initialization procedure, how it was performed on-orbit, and battery performance after the re-initialization. On-orbit data monitoring and trending is an ongoing activity, and will continue as ISS assembly progresses.
机译：国际空间站（ISS）上的光伏（PV）模块自2000年11月以来一直在运营，并支持ISS及其船员的电力需求。 PV模块包含光伏阵列，可将太阳能转换为电力，以及集成的设备组件（IEA），该设备组件（IEA）容纳电动硬件和电力调节和储存的电池。每个PV模块包含两个独立的电源通道，用于容错。每个电源通道都包含三个并行电池，以满足其性能要求和容错。每个电池由串联的76个镍 - 氢（Ni-H / Sub 2 /）细胞组成。这些76个细胞包含在串联连接的两个轨道可更换单元（ORU）中。监视轨道数据并趋势以确保所有硬件正常运行。审查On-Orbit数据显示，虽然五个电池运行得很好，但一个是显示不匹配的orus的迹象。两种orus中的细胞压力与超过推荐范围的量不同。这种异常行为的原因可能是两个orus具有不同的使用历史。进行评估，确定该电池的容量将受到较低压力oru的限制。在电池容量下降到影响其满足性能要求的能力之前，正在采取步骤减少这种压差。作为第一步，开发了一种电池重新初始化程序以减少这种压差。该过程成功地进行了在轨道上进行，压差降低到推荐范围。本文介绍了电池的电池性能和不匹配的orus的后果。本文还介绍了重新初始化过程，如何在轨道上执行，以及重新初始化后的电池性能。在轨道数据监测和趋势是一个持续的活动，并将继续作为ISS大会进行的。

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