ABSTRACT

The selection of passive components and the optimized design of control system are the challenging task for designing standalone solar water pumping system (SWPS). This article presents the complete procedure for optimum design and rapid hardware in loop implementation of SWPS. The presented SWPS consists of SPV source, high gain quadratic boost converter (QBC), voltage source inverter, and induction motor coupled to pump. Two design aspects, i.e., passive components design and control system design, are discussed in detail. In passive components, QBC inductor are designed to have continuous conduction operation even at lower sun radiation. In control system design, the procedure to get optimized control system parameter is presented, where first system transfer function is estimated using data-driven system identification procedure and then the optimum DC-bus voltage controller gains are derived by frequency response analysis. To verify system performances, the hardware in loop implementation of designed system is explained, where the control algorithm is implemented in generic ARM Cortex-M4 Microcontroller STM32F407VG with real time simulator OPAL-RT. The extensive experiments are conducted by considering variable sun radiation on SPV source. The test results verify the effective DC-bus voltage regulation and the adaptive speed control performance of SWPS under the variable sun radiation.

摘要

无源组件的选择和控制系统的优化设计是设计独立太阳能水泵系统（SWPS）的艰巨任务。本文介绍了SWPS的最佳设计和快速硬件循环实施的完整过程。提出的SWPS包括SPV源，高增益二次升压转换器（QBC），电压源逆变器和耦合到泵的感应电动机。详细讨论了两个设计方面，即无源组件设计和控制系统设计。在无源元件中，QBC电感器被设计为即使在较低的太阳辐射下也具有连续的传导操作。在控制系统设计中，提出了获得优化控制系统参数的步骤，其中首先使用数据驱动的系统识别程序估算系统传递函数，然后通过频率响应分析得出最佳的直流母线电压控制器增益。为了验证系统性能，解释了所设计系统的硬件在环实现方式，其中控制算法在带有实时模拟器OPAL-RT的通用ARM Cortex-M4微控制器STM32F407VG中实现。通过考虑SPV源上的可变太阳辐射来进行广泛的实验。测试结果证明了在可变太阳辐射下有效的直流母线电压调节和SWPS的自适应速度控制性能。其中的控制算法是在带有实时模拟器OPAL-RT的通用ARM Cortex-M4微控制器STM32F407VG中实现的。通过考虑SPV源上的可变太阳辐射来进行广泛的实验。测试结果证明了在可变太阳辐射下有效的直流母线电压调节和SWPS的自适应速度控制性能。其中的控制算法是在带有实时模拟器OPAL-RT的通用ARM Cortex-M4微控制器STM32F407VG中实现的。通过考虑SPV源上的可变太阳辐射来进行广泛的实验。测试结果证明了在可变太阳辐射下有效的直流母线电压调节和SWPS的自适应速度控制性能。