Performance analysis of a solar‐powered water pumping using improved SIDO buck–boost converter

Abstract

This study proposes a low-cost solar-powered water pumping system (SPWPS) utilising a proposed single-input dualoutput (SIDO) buck-boost converter with an efficient control technique for the switched reluctance motor (SRM) drive. The newly designed buck-boost converter provides a continuous input and output current to the motor with a low ripple content. This converter is also capable to minimise the size of DC-link capacitor and to provide a balanced dual output voltage supply. Owing to the fundamental frequency switching of a split DC mid-point converter, there is a considerable reduction in the semiconductor losses and provides an opportunity to eliminate the sensors from the motor side. In addition, an improved perturb and observe (P&O) maximum power point tracking (MPPT) technique is also implemented in proposed system. The implemented MPPT algorithm has drift-free operation and an ability to control the pumping rate also at maximum PV power generation, which is usually difficult in standalone water pumping system. Test results are presented on an 875-Wp PV array fed a 1 hp pump to demonstrate sound agreement between the simulated and test results of proposed system.

High‐gain single‐switch single‐input dual‐output DC‐DC converter with reduced switching stress

“…The switching stress is less and yields higher efficiency compared with the reported paper. 10 When compared with earlier studies 7,19 with the proposed converter, especially, Dur an et al 7 can achieve the dual-outputs with a lesser number of diodes. However, previous studies 7,19 can produce more nominal voltage gain than the proposed SIDO, but it has higher current stress.…”

“…When compared with earlier studies 7,19 with the proposed converter, especially, Durán et al 7 can achieve the dual‐outputs with a lesser number of diodes. However, previous studies 7,19 can produce more nominal voltage gain than the proposed SIDO, but it has higher current stress. As a result, the efficiencies of converters Singh and Mishra 19 and dos Santos 16 are obtained only 85.9% and 90.2%, respectively.…”

“…Still, several diodes and capacitors are required, which leads to higher costs and higher switching stress. An improved SIDO converter is proposed in Singh and Mishra 19 to integrate the solar photovoltaic cells and SRM motor drive. This converter can also minimize the scale of the DC‐link condenser, and it offers a regulated twin output voltage‐supply.…”

Optimal Configuration Investigation for Photovoltaic Water Pumping System, Case Study: In a Desert Environment at Ghardaia, Algeria

“…Research and current status of various aspects of SPVWPS have been carried out by review papers [12][13][14][15]. Due to the great importance of the motor in the PV pumping chain to generate the appropriate electromechanical power conversion [16], recently, regarding the suitable type of engine, a large number of studies have been conducted such as brushless DC motor (BLDC) [17,18], permanent magnet (PM) motor [19][20][21], switched reluctance motor (SRM) [22] and the induction motor (IM) [23]. However, due to its significant characteristics such as high efficiency, high power density, quick acceleration capability and strong starting torque at low input power [24,25], the brushless permanent magnet motor is considered an appropriate matching for stand-alone PV pumping systems.…”

A Review of the Power Converter Interfaces for Switched Reluctance Machines

“…The Split DC topology, represented in Figure 9, uses two series connected capacitors replacing the DC link capacitor [49][50][51]. It has only two modes of operation, magnetization and demagnetization, using only n switches.…”