Abstract This paper presents a water pumping system powered by solar photovoltaic (PV) panels employing a switched reluctance motor (SRM) drive and a three-level quadratic Boost (3LQB) DC-DC converter for a dual output. The DC-DC topology is characterized by quadratic voltage static gain, capability to ensure voltage balance in the output capacitors and reduced voltage stress across power switches and diodes. The three-level voltage of the DC-DC converter allows to connect an asymmetrical half-bridge (AHB) converter integrated into the SRM drive. The DC-DC converter also operates in continuous conduction mode (CCM) which, combined with a proposed maximum power point tracking (MPPT) algorithm, helps to optimize the power supplied by the PV panels. A laboratory prototype was also developed and installed in a workbench to verify its practical implementation considering all devices involved. The tests were performed considering different loads and solar irradiations to verify the system performance under different situations. The PV panels were simulated using a remotely controlled DC power source to impose the typical characteristic I-V curves of the PV panels according to solar irradiation and the water pump behavior was emulated in the laboratory using a controlled torque load coupled to the SRM drive. The experimental results indicate that the proposed solution allows to fully exploit the solar energy to provide as much as possible a continuous water flow in isolated pumping solutions. The operating limits of this solution should be determined by the minimum water flow rate required, necessary head (elevation) and net positive suction head (NPSH).

中文翻译：

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与用于抽水光伏供电系统的 SRM 驱动器相关联的三电平二次升压 DC-DC 转换器

摘要 本文介绍了一种由太阳能光伏 (PV) 面板供电的抽水系统，该系统采用开关磁阻电机 (SRM) 驱动器和用于双输出的三电平二次升压 (3LQB) DC-DC 转换器。DC-DC 拓扑的特点是二次电压静态增益、能够确保输出电容器中的电压平衡以及降低电源开关和二极管上的电压应力。DC-DC 转换器的三电平电压允许连接集成到 SRM 驱动器中的非对称半桥 (AHB) 转换器。DC-DC 转换器还在连续导通模式 (CCM) 下运行，该模式与建议的最大功率点跟踪 (MPPT) 算法相结合，有助于优化 PV 电池板提供的功率。还开发了一个实验室原型并将其安装在工作台上，以验证其考虑到所有设备的实际实施情况。测试是在考虑不同负载和太阳辐射的情况下进行的，以验证不同情况下的系统性能。使用远程控制的直流电源模拟 PV 电池板，根据太阳辐射施加 PV 电池板的典型特征 IV 曲线，并在实验室中使用耦合到 SRM 驱动器的受控扭矩负载模拟水泵行为。实验结果表明，所提出的解决方案允许充分利用太阳能，以在隔离泵解决方案中提供尽可能多的连续水流。此解决方案的操作限制应由所需的最小水流量确定，