The present work deals with the design of an efficient and inexpensive autonomous photovoltaic array-based water pumping system utilising a new configuration of a single-input balanced dual supply buck–boost DC–DC converter. A four-phase switched reluctance motor (SRM) drive is selected to pump the water effectively and to make the system reliable. The utilised DC–DC converter can provide two balanced outputs using a single solar power source. It offers continuous output supply with minimum ripple to the SRM pump. The new control logic is also discussed in this work to provide equal voltages for two capacitors of the split converter in both starting and steady-state conditions. An improved perturb and observer-based maximum power point tracking control is also utilised to enhance the solar output power at varying irradiance. Moreover, owing to the pulse-width modulation switching of a split converter, a reduction is achieved in the size of split DC-link capacitors. The MATLAB/Simulink-based simulation is done to validate the real-time implementation of a developed system. These obtained responses are again validated through test results obtained via the developed prototype.

中文翻译：

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高效的太阳能水泵，采用四相SRM驱动的单输入双输出DC-DC转换器

目前的工作涉及利用单输入平衡双电源降压-升压DC-DC转换器的新配置，设计一种高效且廉价的基于自主光伏阵列的水泵系统。选择了四相开关磁阻电动机（SRM）驱动器，以有效地抽水并使系统可靠。利用的DC-DC转换器可使用单个太阳能电源提供两个平衡输出。它为SRM泵提供了连续的输出电源，并且纹波最小。在这项工作中还讨论了新的控制逻辑，以在启动和稳态条件下为分流转换器的两个电容器提供相等的电压。改进的基于扰动和基于观察者的最大功率点跟踪控制也可用于在变化的辐照度下提高太阳能输出功率。此外，由于分离式转换器的脉冲宽度调制开关，可减小分离式直流母线电容器的尺寸。完成了基于MATLAB / Simulink的仿真，以验证开发系统的实时实施。通过开发的原型获得的测试结果再次验证了这些获得的响应。