4.8 Article

A New Analytical MPPT-Based Induction Motor Drive for Solar PV Water Pumping System With Battery Backup

Journal

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
Volume 69, Issue 6, Pages 5768-5781

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIE.2021.3091929

Keywords

Maximum power point trackers; Voltage control; DC motors; Estimation; Batteries; Steady-state; Space vector pulse width modulation; Analytical MPPT control (AMPPTC); induction motor drive (IMD); space vector pulsewidth modulation (SVPWM); water pumping

Funding

  1. JC Bose Fellowship, Khalifa University, UAE [RP03128]
  2. Advanced Power and Energy Center, Khalifa University, UAE [RCII006-2018]

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This article presents an analytical method for achieving maximum power point tracking (MPPT) in a solar photovoltaic (PV) array-based water pumping system using an induction motor drive (IMD). The method utilizes space vector pulsewidth modulation (SVPWM) to generate gating signals for a three-phase inverter. The proposed MPPT control scheme demonstrates fast dynamic performance and minimal overshoot in the water pumping system. It also provides robustness against variations in solar irradiance/parameters and ensures stability over a wide speed range of the IMD. The MPPT regulation is achieved by a boost converter, while the dc-link voltage regulation is assured by the three-phase inverter. The performance and robustness of the proposed MPPT control scheme are validated through laboratory experimentation.
In this article, an analytical method is presented to achieve maximum power point tracking (MPPT) for a solar photovoltaic (PV) array-based water pumping system comprising of an induction motor drive (IMD). The gating signals are generated using the space vector pulsewidth modulation (SVPWM) method for three-phase inverter. This analytical MPPT control (AMPPTC) scheme exhibits fast dynamic performance and minimum overshoot with the IMD-based water pumping system. Additionally, the AMPPTC scheme provides absolute steady-state robustness under variations in solar irradiance/parameters that improves the stability of the system under a wide speed range of IMD and makes the system insensitive toward parameter variations. The dc-link voltage regulation is assured by three-phase inverter, and MPPT regulation is achieved by the boost converter. This two-stage PV system, with MPPT controlled boost converter and SVPWM-based three-phase inverter operating the pump, is modeled and simulated in Simulink environment of MATLAB. The performance and robustness of the AMPPTC-based PV water pumping system are corroborated through the laboratory experimentation.

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