Grid-connected solar photovoltaic-fed brushless DC motor drive for water pumping system using colliding body optimization technique

Abstract

Purpose This paper aims to present an improvement to the power quality of the grid by using a colliding body optimization (CBO) based proportional-integral (PI) compensated design for a grid-connected solar photovoltaic-fed brushless DC motor (BLDC)-driven water pumping system with a bidirectional power flow control. The system with bidirectional power flow allows driving the pump at full proportions uninterruptedly irrespective of the weather conditions and feeding a grid when water pumping is not required. Design/methodology/approach Here, power quality issue is taken care of by the optimal generation of the duty cycle of the voltage source converter. The duty cycle is optimally generated by optimal selection of the gains of the current controller (i.e. PI), with the CBO technique resulting in a nearly unity power factor as well as lower total harmonic distortion (THD) of input current. In the CBO technique, the gains of the PI controller are considered as agents and collide with each other to obtain the best value. The system is simulated using MATLAB/Simulink and validated in real time with OPAL RT simulator, OP5700. Findings It was found that the power quality of grid using the CBO technique has improved much better than the particle swarm optimization and Zeigler–Nichols approach. The bidirectional flow of control of VSC allowed for optimum resource utilization and full capacity of water pumping whatever may be weather conditions. Originality/value Improved power quality of grid by optimally generation of the duty cycle for the proposed system. A unit vector tamplate generation technique is used for bidirectional power transfer.

Grid-Connected Solar Water Pumps with Reduced Converter Topology for Cost-Effective Brilliance

“…Additionally, Mishra et al contribute an economical solar water pump design with grid and battery backup, ensuring continuous operation by addressing challenges associated with solar intermittency [27]. Furthermore, Kar et al propose a novel approach in Circuit World, employing colliding body optimization techniques in a grid-connected solar PV-fed brushless DC motor drive for water pumping [28]. These diverse advancements underscore the evolving landscape of solar PV applications in water pumping systems, encompassing efficiency improvements, continuous operation strategies, and innovative optimization techniques.…”

Optimized Control of a Hybrid Water Pumping System Integrated with Solar Photovoltaic and Battery Storage: Towards Sustainable and Green Water-Power Supply

“…If full water distribution is desired continuously due to these troublesome situations, external power support is required. In remote locations, a diesel generator is often used as a backup supply [3,4]. Recently however, it has been recommended that diesel generators should not be used, to maintain a pollution-free environment and reduce threats to energy security.…”

“…With increasing demands for electricity, power saving has become a serious problem. BLDC motors play a serious role in this issue as energy-efficient motors with high power density, high efficiency, high power factors, and a high torque/inertia ratio compared to asynchronous motors [4]. This motor has replaced the asynchronous motor in many applications, including water pumping.…”