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Current sensorless MPPT method with battery management for PV based single phase standalone system.

Naci Genc1,2, Hasan Uzmus3, Zhansaya Kalimbetova4

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|February 14, 2026
PubMed
Summary
This summary is machine-generated.

This study presents a novel current-sensorless maximum power point tracking (MPPT) method for standalone photovoltaic systems. The approach simplifies hardware and reduces costs by estimating current without direct measurement, enhancing off-grid solar energy efficiency.

Keywords:
Battery managementDC-DC converterMPPTPVSolar energy

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Area of Science:

  • Electrical Engineering
  • Renewable Energy Systems
  • Power Electronics

Background:

  • Photovoltaic (PV) systems require efficient Maximum Power Point Tracking (MPPT) for optimal energy yield, especially under variable solar irradiance.
  • Standalone single-phase PV systems need reliable power management and battery charging for off-grid applications.
  • Conventional MPPT methods often require current sensors, increasing hardware complexity and cost.

Purpose of the Study:

  • To introduce an improved, current-sensorless MPPT technique for single-phase standalone PV systems.
  • To integrate this MPPT with a battery charging unit for effective energy management in off-grid scenarios.
  • To simplify hardware design and reduce costs in PV power systems.

Main Methods:

  • Utilizing an interleaved hybrid DC-DC boost converter with high voltage gain.
  • Estimating PV array input current using only inductor voltage during the switch ON-state, eliminating the need for current sensors.
  • Implementing a battery charging unit with control structure regulating charging dynamics based on voltage and operating constraints.

Main Results:

  • Successful simulation validation using MATLAB/Simulink under dynamic irradiance profiles, showing accurate current estimation.
  • Experimental validation using a digital signal processor (DSP) demonstrating reliable real-time operation.
  • Demonstrated hardware simplification and cost reduction due to the sensorless approach.

Conclusions:

  • The proposed current-sensorless MPPT method is effective and practical for standalone PV systems.
  • The integrated battery charging unit ensures stable performance in isolated conditions.
  • This approach offers a cost-effective solution for off-grid solar energy applications.