Adaptive d-Axis Current Control of RSyM for Photovoltaic Water Pumping Incorporating Cross Saturation

In this article, an adaptive d -axis current control of a reluctance synchronous motor (RSyM) drive for a photovoltaic (PV) water pumping system has been presented, which incorporates impacts of the cross saturation in realtime to compensate the errors in the speed estimation. The response of the RS...

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Bibliographic Details
Published in:IEEE transactions on industrial informatics Vol. 16; no. 10; pp. 6487 - 6498
Main Authors: Varshney, Anshul, Sharma, Utkarsh, Singh, Bhim
Format: Journal Article
Language:English
Published: Piscataway IEEE 01.10.2020
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Activation
Adaptive algorithms
Adaptive control
Centrifugal pumps
Control algorithms
Control theory
Controllers
Copper loss
Cross magnetization
Cross-magnetic saturation
DC motors
Directional control
Electric converters
field-oriented control algorithm and water pumping
Incremental conductance
Inductance
Induction motors
Insulated gate bipolar transistors
maximum power point tracking (MPPT)
Maximum power tracking
Optimization
photovoltaic (PV) array
Photovoltaic cells
Position sensing
position sensorless
Power factor
Pumping
Real time
Reluctance motors
reluctance synchronous motor (RSyM) drive
Saturation
Semiconductor devices
Solar energy conversion
Stators
Synchronous motors
Torque
Voltage control
ISSN:1551-3203, 1941-0050
Online Access:Get full text
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Summary:In this article, an adaptive d -axis current control of a reluctance synchronous motor (RSyM) drive for a photovoltaic (PV) water pumping system has been presented, which incorporates impacts of the cross saturation in realtime to compensate the errors in the speed estimation. The response of the RSyM drive is optimized by adaptive d -axis current estimation. A real-time assessment of the d -axis inductance is carried out to include the cross magnetization into consideration for improving the efficiency of the motor. The d -axis current is varied for minimum value to provide the maximum output torque. Here, a two-stage solar energy conversion system is used to drive the centrifugal pump coupled to an RSyM drive. A boost converter is used to optimize the PV power using an incremental conductance based maximum power point tracking technique. The boost converter supplies power to a dc-ac, an insulated gate bipolar transistor based inverter through a capacitor connected across the dc link. The control of RSyM is implemented using the adaptive i d -based vector control algorithm. An adaptive d -axis current is fed to the controller corresponding to the available solar irradiation, which aids in the maximization of drive efficiency and the minimization of stator copper losses. Moreover, this control improves the motor input terminal power factor. A speed/position sensorless control technique is utilized to reduce the complexity and to enhance the reliability of a water pumping system. The suitability of an implemented controller is verified through the experimental results taken on a 3.7 kW RSyM-driven PV energized water pumping system.
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ISSN:1551-3203
1941-0050
DOI:10.1109/TII.2020.2964905