International Journal of Electrical and Electronics Research (IJEER) Open Access | Rapid and quality publishing Review Article | Volume 9, Issue 3 | Pages 84-88 | e-ISSN: 2347-470X 84 Website: www.ijeer.forexjournal.co.in Solar Water Pumping Model Using Zeta Converter ░ ABSTRACT: A solar pumping model is proposed in this paper using a Brushless DC (BLDC) motor. Zeta converter is used as a DC-DC link between the voltage source inverter and the PV array. Zeta converter enables soft starting of the BLDC motor and the speed control is achieved by simple variation of DC link voltage, thereby eliminating the need for complex switching circuitry. Zeta converter belongs to the class of buck-boost converter hence offers a wide range of operating voltage. The proposed model is simple and cost-effective so it can be practically implemented with minimum cost. The proposed model is tested for its suitability in the MATLAB/Simulink environment. Keywords: Zeta converter, PV array, solar irrigation, MPPT. ░ 1. INTRODUCTION The consumption of electricity has increased exponentially in the past few decades. It has increased the pressure on non- renewable fossil reserves all around the world. The pollution level has increased to its peak. Electricity is an essential component for the growth and development of a nation. A country like India where the majority of the population depends on the agricultural sector usually faces the issue of frequent power cuts or power failure. Most of the power is being diverted to the industries and cities. The use of solar energy can prove to be a suitable and sustainable solution to this problem. Solar energy is the cleanest and most abundant green energy available around the world.[1] The initial installation cost is however high but in the long run, it becomes economical as it has zero running charges and minimum maintenance cost. Indian farmers can be benefitted from the implementation of solar irrigation structures. It would ensure a continuous supply of water for the crops and the elimination of electricity bills. The proposed PV solar irrigation system uses a centrifugal pump coupled to a BLDC motor fed by a DC-DC Zeta converter.[2] The rugged performance characteristics of the BLDC motor such as high efficiency, reliability, easy and smooth speed control, high torque to inertia ratio and negligible maintenance makes it a suitable choice for the pumping application.[3] Zeta converter serves several advantages over other DC-DC converters which makes it a suitable choice. The Zeta converter is a buck-boost converter hence offers a wide range of operating voltage for the application. This feature is exploited for the smooth starting of the BLDC motor. [4] This converter topology has an inductor at its output terminal which makes the output current smooth and ripple-free. It has minimum switches hence the switching losses are minimum and operates in the continuous conduction mode. Zeta converter unlike other buck-boost converters does not operate in the inverting mode i.e., the output voltage never changes its polarity. This reduces the need for additional circuitry and reduces the complexity of the circuit [5]. To ensure that the system operates at peak power MPPT technique using Perturb and Observe algorithm is used. ░ 2. SYSTEM CONFIGURATION AND OPERATION The proposed system broadly has the following major parts i.e., PV array, Zeta converter, Voltage Source Inverter, BLDC motor with an inbuilt encoder coupled with the centrifugal pump. The proposed prototype with major blocks is depicted in figure 1. Figure 1: Prototype of the solar pumping model. The PV array generates the electrical energy (which depends on the amount of irradiance and atmospheric temperature) is fed directly to the Zeta converter. This energy is then forwarded to VSI with minimum possible losses as the converter has only one switching part.[2] The voltage at the output remains fairly constant. To ensure that the maximum Solar Water Pumping Model Using Zeta Converter for Irrigation Application Vikash Kumar 1 and Amit Choudhary 2 1 Student, Department of Electrical Engineering, BIT Sindri, Dhanbad, India, kr.vikash104@gmail.com 2 Professor, Department of Electrical Engineering, BIT Sindri, Dhanbad, India, amit.ee@bitsindri.ac.in *Correspondence: Vikash Kumar; Email : kr.vikash104@gmail.com ARTICLE INFORMATION Author(s): Vikash Kumar and Amit Choudhary Received: Nov 17, 2021; Accepted: Jan 02, 2022; Published: Jan 30, 2022; e-ISSN: 2347-470X; Paper Id: IJEER-090309; Citation: doi.org/10.37391/IJEER.090309 Webpage-link: https://ijeer.forexjournal.co.in/archive/volume-9/ijeer-090309.html