Design of solar‐powered agriculture pump using new configuration of dual‐output buck–boost converter

Abstract

This paper proposed a new structure of single switch dual output Zeta derived DC-to-DC converter for an efficient harvesting of photovoltaic (PV) power for a 4-phase switched reluctance motor (SRM) driven agriculture pump. The system is essentially developed to minimise both cost and complexity, while synchronously guaranteeing optimal operation of the PV array. The proposed converter is derived from a hybrid of a 'Zeta' and Landsman converters and so it contains all the benefits of both converters including balanced outputs. Due to an identical instantaneous duty cycle, the switching node is shared by both Zeta and Landsman converters. The proposed converter offers continuous power to drive, a low ripple in output current, and balanced dual output supply. The PV power optimisation and to deliver smooth start of SRM, are the two major objectives of proposed DC-to-DC converter. A new maximum power point tracking (MPPT) technique is also used in the system to optimise the performance of PV array. Moreover, the proposed MPPT control has an additional advantage of regulating the flow rate of water pumping by adjusting the duty cycle of DC-to-DC converter. The motor speed is smoothly regulated through the variable DC link voltage of a mid-point converter.

Development of grid‐interactive inverter utilising induction motor driven photovoltaic water pumping system

“…An induction motor is driven by VSI in variable frequency mode. In literature, PV2M operation is well explored as stand‐alone operation of SPVWPS [7, 13, 19, 20, 21].…”

Design and Analysis of a Water Pumping System with Photovoltaic Source and Switched Reluctance Motor

“…In addition, manufacturer's tolerances in cell characteristics, environmental stresses and shadow problems may lead to mismatches of each PV module caused significant losses. DC -DC converters in series are used to solve these problems [7]. Switching loss is one of the prominent problems of converters.…”

“…The analyses and design of the switch converter have already become the key points of the researches. There are two basic operation modes, which are classified as continuous conduction mode (CCM) and discontinuous conduction mode, on DC -DC converters [7].…”

A High Voltage Gain Multiport Zeta-Zeta Converter for Renewable Energy Systems

“…Zeta converter was designed to feed a four phase switched reluctance motor whose input is from a PV source. Zeta converter and Landsman converter were integrated to form a multiport converter with different control circuits in [36]. This zeta converter also called as dual sepic converter is derived from a buck boost dc-dc converter to obtain a high voltage gain [37].The converter proved to show greater efficiency, but the disadvantages are that it uses more number of passive elements and is isolated.…”