Enhanced photovoltaic water pumping system employing Kalman filter‑based MPPT coupled with multilevel inverter‑driven DTC–IM

Rahul Kumar; M. Venkatesh Naik

Enhanced photovoltaic water pumping system employing Kalman filter‑based MPPT coupled with multilevel inverter‑driven DTC–IM

Rahul Kumar

M. Venkatesh Naik

Vol. 26, No. 1, pp. 201-213, Jan. 2026

10.1007/s43236-025-01061-x

Photovoltaic System

Perturb and Observe

Incremental conductance

Direct torque control

Induction motor

Centrifugal pump

Abstract

This work investigates an inexpensive, high-performance, battery-free solar water pumping system (SWPS) that uses a threephase induction motor (IM). The proposed control scheme for the photovoltaic water pumping system (PVWPS) incorporates two main controllers. The first control strategy is based on the Kalman filter algorithm (KF–MPPT). It is used to regulate the duty ratio of the boost converter and extract the maximum power. The second controller used for direct torque control (DTC). It uses a three-level inverter neutral point clamped (NPC) to regulate the output voltage and current of an IM. In addition, the torque and flux hysteresis regulators are increased by three to five, enhancing the performance of the proposed control without affecting the system efficiency. The performance of the proposed KF MPPT is compared with conventional variable step size (VSS) perturb and observe and incremental conductance MPPT under changes in environmental conditions. The model employing KF–maximum power point tracking (MPP) and the proposed DTC demonstrates superior tracking accuracy, faster response times, reductions in the torque and flux ripple, improvements in current quality, and increases in the amount of water pumped. The performance of the solar pump system modeled and designed using MATLAB/Simulink is analyzed with experimental validation.

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Cite this article

[IEEE Style]

R. Kumar and M. V. Naik, "Enhanced photovoltaic water pumping system employing Kalman filter‑based MPPT coupled with multilevel inverter‑driven DTC–IM," Journal of Power Electronics, vol. 26, no. 1, pp. 201-213, 2026. DOI: 10.1007/s43236-025-01061-x.

[ACM Style]

Rahul Kumar and M. Venkatesh Naik. 2026. Enhanced photovoltaic water pumping system employing Kalman filter‑based MPPT coupled with multilevel inverter‑driven DTC–IM. Journal of Power Electronics, 26, 1, (2026), 201-213. DOI: 10.1007/s43236-025-01061-x.