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Development of a microprocessor-based charge controller for home solar system

机译：基于微处理器的家用太阳能系统充电控制器的开发

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The charge controllers currently in use in most solar home systems (SHS) in Africa require intensive manual battery monitoring and maintenance regimes for the user or field technicians. In addition, the most widely used charge controllers in the African set-up are analogue systems, which are very rigid in the adaptation for local conditions such as temperature compensation or seasonal irradiation variation. From the maintenance point of view, this presents some significant technical problems for the end-user, particularly our villagers in the rural and remote communities. Reliability and compatibility due to circuit complexity and use of non-available components have also meant repair and maintenance in the field has been a major problem. Costs involved in the hardware development of such charge controllers are quite large. In this work, we design a charge controller based on the microprocessor, which offers increased reliability, reduced cost, reduced complexity in the number of electronic components and increased monitoring and regulative functions. This controller is designed for simplicity by using a commonly applied domestic embedded systems microcontroller - the Motorola 6811 series. The advantage of using a microprocessor based system is that it is possible to alter the general parameters and specifications of the charge controller by simply altering the voltage parameters in the software via a user interface. For researchers and maintenance technicians the controller is designed for easy interface to a data logger or a portable computer to check for battery and panel performance history whilst away from the site.
机译：非洲大多数太阳能家用系统（SHS）当前使用的充电控制器需要用户或现场技术人员进行密集的手动电池监视和维护制度。此外，非洲系统中使用最广泛的充电控制器是模拟系统，在适应当地条件（例如温度补偿或季节性辐射变化）时非常僵化。从维护的角度来看，这给最终用户，特别是我们农村和偏远社区的村民，提出了一些重大的技术问题。由于电路复杂性和不可用组件的使用，可靠性和兼容性也意味着现场维修和保养一直是一个主要问题。这种充电控制器的硬件开发涉及的成本非常高。在这项工作中，我们设计了一种基于微处理器的充电控制器，该控制器可提高可靠性，降低成本，降低电子部件数量的复杂性并增加监视和调节功能。通过使用常用的家用嵌入式系统微控制器-Motorola 6811系列，此控制器的设计简化了。使用基于微处理器的系统的优点是可以通过简单地通过用户界面更改软件中的电压参数来更改充电控制器的一般参数和规格。对于研究人员和维护技术人员而言，该控制器设计为可轻松连接到数据记录仪或便携式计算机，以在不在现场的情况下检查电池和面板的性能历史记录。

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