Performance investigation of simplified PWM MPPT approach for direct PV‐fed switched reluctance motor in water pumping system

Abstract

Variable speed drives (VSDs)‐based direct photovoltaic (PV) fed water pumping systems (WPS) are of increasing importance for the socio‐economic growth in remote areas. Due to the absence of windings and magnets on the rotor, switched reluctance motor (SRM) is emerging as a viable economic alternative in VSD systems. Thus, this study proposes and presents a simplified pulse width modulation‐based maximum power point tracking (MPPT) control for direct PV‐fed SRM‐WPS using modified lookup table (MLUT) approach. The proposed control technique offers lesser phase peak, near same phase rms, reduced torque ripple and noise, better efficiency and reduced DC‐link current ripple in contrast to single pulse mode technique. In addition, the proposed system does not require an intermediate converter and current sensors. Thus, results in reduced noise, reduced size and hence the cost of WPS. Further, it also provides a reduced memory size due to MLUT and an effective MPPT with the good dynamic response for a change in atmospheric conditions. The proposed system is modelled and simulated in MATLAB/Simulink environment and the prototype is built to validate experimentally using field programmable gate array controller. The performance analysis of the proposed system has been carried out and presented.

Low‐cost SRM drive system with reduced current sensors and position sensors

“…22.5°+ 7.5°k/(Δt 3 f c ) R ∈ [4,5] 30°+ 7.5°k/(Δt 4 f c ) R ∈ [5,6] 37.5°+ 7.5°k/(Δt 5 f c ) R ∈ [6,7] 45°+ 7.5°k/(Δt 6 f c ) R ∈ [7,8] 52.5°+ 7.5°k/(Δt 7 f c ) R ∈ [8,1] (22)…”

“…Switched reluctance machines (SRMs) are attracting more and more interest in some variable-speed drive applications relying on their inherent merits such as small starting current, simple structure, rare-earth-free feature and good fault tolerance [1][2][3][4]. Recently, great efforts have been devoted to develop strategies to improve the system performances of SRMs [5][6][7][8]. However, the cost of the drive system is a key factor restraining the use of SRMs.…”

Self‐regulated DC‐link control of synchronous reluctance motor‐driven solar water pumping system

“…Several MPPT algorithms have been developed and investigated by many researchers [3,4] with their advantages and disadvantages. Many publications have been reported in the area of solar-powered water pumping systems with AC and DC motors [5][6][7][8][9][10][11]. A DC motor-driven solar water pumping system is reported in [5].…”

A comprehensive electromagnetic simulation model for switched reluctance motor operating under multiphase excitation

“…Due to exclusive features of the SRM such as high reliability, simple and robustness structure, large torque/weight ratio, and appropriate operation over a wide range of speed, special attention has been paid to the SRM within the last three decades and it is used for different applications [1][2][3][4][5]. Most of electromagnetic models presented for the SRM are for one-phase excitation control mode while the multiphase operation is more applicable because of higher efficiency and lower torque ripple [6][7].…”